api: Implement bucket notification. (#2271)

* Implement basic S3 notifications through queues

Supports multiple queues and three basic queue types:

1. NilQueue -- messages don't get sent anywhere
2. LogQueue -- messages get logged
3. AmqpQueue -- messages are sent to an AMQP queue

* api: Implement bucket notification.

Supports two different queue types

- AMQP
- ElasticSearch.

* Add support for redis

api-errors.go

@@ -105,6 +105,12 @@ const (
 	ErrBucketAlreadyOwnedByYou
 	// Add new error codes here.
 
+	// Bucket notification related errors.
+	ErrEventNotification
+	ErrARNNotification
+	ErrRegionNotification
+	ErrOverlappingFilterNotification
+
 	// S3 extended errors.
 	ErrContentSHA256Mismatch
 
@@ -411,6 +417,28 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		HTTPStatusCode: http.StatusConflict,
 	},
 
+	/// Bucket notification related errors.
+	ErrEventNotification: {
+		Code:           "InvalidArgument",
+		Description:    "A specified event is not supported for notifications.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrARNNotification: {
+		Code:           "InvalidArgument",
+		Description:    "A specified destination ARN does not exist or is not well-formed. Verify the destination ARN.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrRegionNotification: {
+		Code:           "InvalidArgument",
+		Description:    "A specified destination is in a different region than the bucket. You must use a destination that resides in the same region as the bucket.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+	ErrOverlappingFilterNotification: {
+		Code:           "InvalidArgument",
+		Description:    "An object key name filtering rule defined with overlapping prefixes, overlapping suffixes, or overlapping combinations of prefixes and suffixes for the same event types.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
+
 	/// S3 extensions.
 	ErrContentSHA256Mismatch: {
 		Code:           "XAmzContentSHA256Mismatch",

api-router.go

@@ -60,6 +60,8 @@ func registerAPIRouter(mux *router.Router, api objectAPIHandlers) {
 	bucket.Methods("GET").HandlerFunc(api.GetBucketLocationHandler).Queries("location", "")
 	// GetBucketPolicy
 	bucket.Methods("GET").HandlerFunc(api.GetBucketPolicyHandler).Queries("policy", "")
+	// GetBucketNotification
+	bucket.Methods("GET").HandlerFunc(api.GetBucketNotificationHandler).Queries("notification", "")
 	// ListMultipartUploads
 	bucket.Methods("GET").HandlerFunc(api.ListMultipartUploadsHandler).Queries("uploads", "")
 	// ListObjectsV2
@@ -68,6 +70,8 @@ func registerAPIRouter(mux *router.Router, api objectAPIHandlers) {
 	bucket.Methods("GET").HandlerFunc(api.ListObjectsV1Handler)
 	// PutBucketPolicy
 	bucket.Methods("PUT").HandlerFunc(api.PutBucketPolicyHandler).Queries("policy", "")
+	// PutBucketNotification
+	bucket.Methods("PUT").HandlerFunc(api.PutBucketNotificationHandler).Queries("notification", "")
 	// PutBucket
 	bucket.Methods("PUT").HandlerFunc(api.PutBucketHandler)
 	// HeadBucket

bucket-handlers.go

@@ -23,7 +23,6 @@ import (
 	"encoding/xml"
 	"io"
 	"io/ioutil"
-	"mime/multipart"
 	"net/http"
 	"net/url"
 	"strings"
@@ -319,9 +318,9 @@ func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Req
 	// requests which do not follow valid region requirements.
 	if s3Error := isValidLocationConstraint(r); s3Error != ErrNone {
 		writeErrorResponse(w, r, s3Error, r.URL.Path)
-		return
 	}
-	// Make bucket.
+
+	// Proceed to creating a bucket.
 	err := api.ObjectAPI.MakeBucket(bucket)
 	if err != nil {
 		errorIf(err, "Unable to create a bucket.")
@@ -333,32 +332,6 @@ func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Req
 	writeSuccessResponse(w, nil)
 }
 
-func extractHTTPFormValues(reader *multipart.Reader) (io.Reader, map[string]string, error) {
-	/// HTML Form values
-	formValues := make(map[string]string)
-	filePart := new(bytes.Buffer)
-	var err error
-	for err == nil {
-		var part *multipart.Part
-		part, err = reader.NextPart()
-		if part != nil {
-			if part.FileName() == "" {
-				var buffer []byte
-				buffer, err = ioutil.ReadAll(part)
-				if err != nil {
-					return nil, nil, err
-				}
-				formValues[http.CanonicalHeaderKey(part.FormName())] = string(buffer)
-			} else {
-				if _, err = io.Copy(filePart, part); err != nil {
-					return nil, nil, err
-				}
-			}
-		}
-	}
-	return filePart, formValues, nil
-}
-
 // PostPolicyBucketHandler - POST policy
 // ----------
 // This implementation of the POST operation handles object creation with a specified
@@ -415,6 +388,17 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	})
 	setCommonHeaders(w)
 	writeSuccessResponse(w, encodedSuccessResponse)
+
+	// Load notification config if any.
+	nConfig, err := api.loadNotificationConfig(bucket)
+	if err != nil {
+		errorIf(err, "Unable to load notification config for bucket: \"%s\"", bucket)
+		return
+	}
+
+	size := int64(0) // FIXME: support notify size.
+	// Notify event.
+	notifyObjectCreatedEvent(nConfig, ObjectCreatedPost, bucket, object, md5Sum, size)
 }
 
 // HeadBucketHandler - HEAD Bucket
@@ -464,6 +448,7 @@ func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
 
+	// Attempt to delete bucket.
 	if err := api.ObjectAPI.DeleteBucket(bucket); err != nil {
 		errorIf(err, "Unable to delete a bucket.")
 		writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)

bucket-notification-datatypes.go

@@ -0,0 +1,155 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import "encoding/xml"
+
+type filterRule struct {
+	Name  string `xml:"FilterRuleName"`
+	Value string
+}
+
+type keyFilter struct {
+	FilterRules []filterRule `xml:"FilterRule"`
+}
+
+type notificationConfigFilter struct {
+	Key keyFilter `xml:"S3Key"`
+}
+
+// Queue SQS configuration.
+type queueConfig struct {
+	Events   []string `xml:"Event"`
+	Filter   notificationConfigFilter
+	ID       string `xml:"Id"`
+	QueueArn string `xml:"Queue"`
+}
+
+// Topic SNS configuration, this is a compliance field
+// not used by minio yet.
+type topicConfig struct {
+	Events   []string `xml:"Event"`
+	Filter   notificationConfigFilter
+	ID       string `xml:"Id"`
+	TopicArn string `xml:"Topic"`
+}
+
+// Lambda function configuration, this is a compliance field
+// not used by minio yet.
+type lambdaFuncConfig struct {
+	Events            []string `xml:"Event"`
+	Filter            notificationConfigFilter
+	ID                string `xml:"Id"`
+	LambdaFunctionArn string `xml:"CloudFunction"`
+}
+
+// Notification configuration structure represents the XML format of
+// notification configuration of buckets.
+type notificationConfig struct {
+	XMLName              xml.Name           `xml:"NotificationConfiguration"`
+	QueueConfigurations  []queueConfig      `xml:"QueueConfiguration"`
+	TopicConfigurations  []topicConfig      `xml:"TopicConfiguration"`
+	LambdaConfigurations []lambdaFuncConfig `xml:"CloudFunctionConfiguration"`
+}
+
+// EventName is AWS S3 event type:
+// http://docs.aws.amazon.com/AmazonS3/latest/dev/NotificationHowTo.html
+type EventName int
+
+const (
+	// ObjectCreatedPut is s3:ObjectCreated:Put
+	ObjectCreatedPut EventName = iota
+	// ObjectCreatedPost is s3:ObjectCreated:POst
+	ObjectCreatedPost
+	// ObjectCreatedCopy is s3:ObjectCreated:Post
+	ObjectCreatedCopy
+	// ObjectCreatedCompleteMultipartUpload is s3:ObjectCreated:CompleteMultipartUpload
+	ObjectCreatedCompleteMultipartUpload
+	// ObjectRemovedDelete is s3:ObjectRemoved:Delete
+	ObjectRemovedDelete
+)
+
+// Stringer interface for event name.
+func (eventName EventName) String() string {
+	switch eventName {
+	case ObjectCreatedPut:
+		return "s3:ObjectCreated:Put"
+	case ObjectCreatedPost:
+		return "s3:ObjectCreated:Post"
+	case ObjectCreatedCopy:
+		return "s3:ObjectCreated:Copy"
+	case ObjectCreatedCompleteMultipartUpload:
+		return "s3:ObjectCreated:CompleteMultipartUpload"
+	case ObjectRemovedDelete:
+		return "s3:ObjectRemoved:Delete"
+	default:
+		return "s3:Unknown"
+	}
+}
+
+// Indentity represents the user id, this is a compliance field.
+type identity struct {
+	PrincipalID string `json:"principalId"`
+}
+
+func defaultIdentity() identity {
+	return identity{"minio"}
+}
+
+type s3BucketReference struct {
+	Name          string   `json:"name"`
+	OwnerIdentity identity `json:"ownerIdentity"`
+	ARN           string   `json:"arn"`
+}
+
+type s3ObjectReference struct {
+	Key       string `json:"key"`
+	Size      int64  `json:"size,omitempty"`
+	ETag      string `json:"eTag,omitempty"`
+	VersionID string `json:"versionId,omitempty"`
+	Sequencer string `json:"sequencer"`
+}
+
+type s3Reference struct {
+	SchemaVersion   string            `json:"s3SchemaVersion"`
+	ConfigurationID string            `json:"configurationId"`
+	Bucket          s3BucketReference `json:"bucket"`
+	Object          s3ObjectReference `json:"object"`
+}
+
+// NotificationEvent represents an Amazon an S3 bucket notification event.
+type NotificationEvent struct {
+	EventVersion      string            `json:"eventVersion"`
+	EventSource       string            `json:"eventSource"`
+	AwsRegion         string            `json:"awsRegion"`
+	EventTime         string            `json:"eventTime"`
+	EventName         string            `json:"eventName"`
+	UserIdentity      identity          `json:"userIdentity"`
+	RequestParameters map[string]string `json:"requestParameters"`
+	ResponseElements  map[string]string `json:"responseElements"`
+	S3                s3Reference       `json:"s3"`
+}
+
+// Represents the minio sqs type and inputs.
+type arnMinioSqs struct {
+	sqsType string
+}
+
+// Stringer for constructing AWS ARN compatible string.
+func (m arnMinioSqs) String() string {
+	return minioSqs + serverConfig.GetRegion() + ":" + m.sqsType
+}

bucket-notification-handlers.go

@@ -0,0 +1,211 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"bytes"
+	"encoding/xml"
+	"io"
+	"net/http"
+	"path"
+
+	"github.com/gorilla/mux"
+)
+
+const (
+	bucketConfigPrefix       = "buckets"
+	bucketNotificationConfig = "notification.xml"
+)
+
+// loads notifcation config if any for a given bucket, returns back structured notification config.
+func (api objectAPIHandlers) loadNotificationConfig(bucket string) (nConfig notificationConfig, err error) {
+	notificationConfigPath := path.Join(bucketConfigPrefix, bucket, bucketNotificationConfig)
+	var objInfo ObjectInfo
+	objInfo, err = api.ObjectAPI.GetObjectInfo(minioMetaBucket, notificationConfigPath)
+	if err != nil {
+		switch err.(type) {
+		case ObjectNotFound:
+			return notificationConfig{}, nil
+		}
+		return notificationConfig{}, err
+	}
+	var buffer bytes.Buffer
+	err = api.ObjectAPI.GetObject(minioMetaBucket, notificationConfigPath, 0, objInfo.Size, &buffer)
+	if err != nil {
+		switch err.(type) {
+		case ObjectNotFound:
+			return notificationConfig{}, nil
+		}
+		return notificationConfig{}, err
+	}
+
+	// Unmarshal notification bytes.
+	notificationConfigBytes := buffer.Bytes()
+	if err = xml.Unmarshal(notificationConfigBytes, &nConfig); err != nil {
+		return notificationConfig{}, err
+	} // Successfully marshalled notification configuration.
+
+	return nConfig, nil
+}
+
+// GetBucketNotificationHandler - This implementation of the GET
+// operation uses the notification subresource to return the
+// notification configuration of a bucket. If notifications are
+// not enabled on the bucket, the operation returns an empty
+// NotificationConfiguration element.
+func (api objectAPIHandlers) GetBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
+	// Validate request authorization.
+	if s3Error := checkAuth(r); s3Error != ErrNone {
+		writeErrorResponse(w, r, s3Error, r.URL.Path)
+		return
+	}
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+	notificationConfigPath := path.Join(bucketConfigPrefix, bucket, bucketNotificationConfig)
+	objInfo, err := api.ObjectAPI.GetObjectInfo(minioMetaBucket, notificationConfigPath)
+	if err != nil {
+		switch err.(type) {
+		case ObjectNotFound:
+			writeSuccessResponse(w, nil)
+			return
+		}
+		errorIf(err, "Unable to read notification configuration.", notificationConfigPath)
+		writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
+		return
+	}
+
+	// Indicates if any data was written to the http.ResponseWriter
+	dataWritten := false
+
+	// io.Writer type which keeps track if any data was written.
+	writer := funcToWriter(func(p []byte) (int, error) {
+		if !dataWritten {
+			// Set headers on the first write.
+			// Set standard object headers.
+			setObjectHeaders(w, objInfo, nil)
+
+			// Set any additional requested response headers.
+			setGetRespHeaders(w, r.URL.Query())
+
+			dataWritten = true
+		}
+		return w.Write(p)
+	})
+
+	// Reads the object at startOffset and writes to func writer..
+	err = api.ObjectAPI.GetObject(minioMetaBucket, notificationConfigPath, 0, objInfo.Size, writer)
+	if err != nil {
+		if !dataWritten {
+			switch err.(type) {
+			case ObjectNotFound:
+				writeSuccessResponse(w, nil)
+				return
+			}
+			// Error response only if no data has been written to client yet. i.e if
+			// partial data has already been written before an error
+			// occurred then no point in setting StatusCode and
+			// sending error XML.
+			apiErr := toAPIErrorCode(err)
+			writeErrorResponse(w, r, apiErr, r.URL.Path)
+		}
+		errorIf(err, "Unable to write to client.")
+		return
+	}
+	if !dataWritten {
+		// If ObjectAPI.GetObject did not return error and no data has
+		// been written it would mean that it is a 0-byte object.
+		// call wrter.Write(nil) to set appropriate headers.
+		writer.Write(nil)
+	}
+
+}
+
+// PutBucketNotificationHandler - Minio notification feature enables
+// you to receive notifications when certain events happen in your bucket.
+// Using this API, you can replace an existing notification configuration.
+// The configuration is an XML file that defines the event types that you
+// want Minio to publish and the destination where you want Minio to publish
+// an event notification when it detects an event of the specified type.
+// By default, your bucket has no event notifications configured. That is,
+// the notification configuration will be an empty NotificationConfiguration.
+func (api objectAPIHandlers) PutBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
+	// Validate request authorization.
+	if s3Error := checkAuth(r); s3Error != ErrNone {
+		writeErrorResponse(w, r, s3Error, r.URL.Path)
+		return
+	}
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+
+	_, err := api.ObjectAPI.GetBucketInfo(bucket)
+	if err != nil {
+		errorIf(err, "Unable to bucket info.")
+		writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
+		return
+	}
+
+	// If Content-Length is unknown or zero, deny the request. PutBucketNotification
+	// always needs a Content-Length if incoming request is not chunked.
+	if !contains(r.TransferEncoding, "chunked") {
+		if r.ContentLength == -1 {
+			writeErrorResponse(w, r, ErrMissingContentLength, r.URL.Path)
+			return
+		}
+	}
+
+	// Reads the incoming notification configuration.
+	var buffer bytes.Buffer
+	if r.ContentLength >= 0 {
+		_, err = io.CopyN(&buffer, r.Body, r.ContentLength)
+	} else {
+		_, err = io.Copy(&buffer, r.Body)
+	}
+	if err != nil {
+		errorIf(err, "Unable to read incoming body.")
+		writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
+		return
+	}
+
+	var notificationCfg notificationConfig
+	// Unmarshal notification bytes.
+	notificationConfigBytes := buffer.Bytes()
+	if err = xml.Unmarshal(notificationConfigBytes, &notificationCfg); err != nil {
+		errorIf(err, "Unable to parse notification configuration XML.")
+		writeErrorResponse(w, r, ErrMalformedXML, r.URL.Path)
+		return
+	} // Successfully marshalled notification configuration.
+
+	// Validate unmarshalled bucket notification configuration.
+	if s3Error := validateNotificationConfig(notificationCfg); s3Error != ErrNone {
+		writeErrorResponse(w, r, s3Error, r.URL.Path)
+		return
+	}
+
+	// Proceed to save notification configuration.
+	size := int64(len(notificationConfigBytes))
+	data := bytes.NewReader(notificationConfigBytes)
+	notificationConfigPath := path.Join(bucketConfigPrefix, bucket, bucketNotificationConfig)
+	_, err = api.ObjectAPI.PutObject(minioMetaBucket, notificationConfigPath, size, data, nil)
+	if err != nil {
+		errorIf(err, "Unable to write bucket notification configuration.", notificationConfigPath)
+		writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
+		return
+	}
+
+	// Success.
+	writeSuccessResponse(w, nil)
+}

bucket-notification-utils.go

@@ -0,0 +1,128 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import "strings"
+
+// List of valid event types.
+var suppportedEventTypes = map[string]struct{}{
+	// Object created event types.
+	"s3:ObjectCreated:*":                       {},
+	"s3:ObjectCreated:Put":                     {},
+	"s3:ObjectCreated:Post":                    {},
+	"s3:ObjectCreated:Copy":                    {},
+	"s3:ObjectCreated:CompleteMultipartUpload": {},
+	// Object removed event types.
+	"s3:ObjectRemoved:*":      {},
+	"s3:ObjectRemoved:Delete": {},
+}
+
+// checkEvent - checks if an event is supported.
+func checkEvent(event string) APIErrorCode {
+	_, ok := suppportedEventTypes[event]
+	if !ok {
+		return ErrEventNotification
+	}
+	return ErrNone
+}
+
+// checkEvents - checks given list of events if all of them are valid.
+// given if one of them is invalid, this function returns an error.
+func checkEvents(events []string) APIErrorCode {
+	for _, event := range events {
+		if s3Error := checkEvent(event); s3Error != ErrNone {
+			return s3Error
+		}
+	}
+	return ErrNone
+}
+
+// checkQueueArn - check if the queue arn is valid.
+func checkQueueArn(queueArn string) APIErrorCode {
+	if !strings.HasPrefix(queueArn, minioSqs) {
+		return ErrARNNotification
+	}
+	if !strings.HasPrefix(queueArn, minioSqs+serverConfig.GetRegion()+":") {
+		return ErrRegionNotification
+	}
+	return ErrNone
+}
+
+// Check - validates queue configuration and returns error if any.
+func checkQueueConfig(qConfig queueConfig) APIErrorCode {
+	// Check queue arn is valid.
+	if s3Error := checkQueueArn(qConfig.QueueArn); s3Error != ErrNone {
+		return s3Error
+	}
+
+	// Unmarshals QueueArn into structured object.
+	sqsArn := unmarshalSqsArn(qConfig.QueueArn)
+	// Validate if sqsArn requested any of the known supported queues.
+	if !isAMQPQueue(sqsArn) || !isElasticQueue(sqsArn) || !isRedisQueue(sqsArn) {
+		return ErrARNNotification
+	}
+
+	// Check if valid events are set in queue config.
+	if s3Error := checkEvents(qConfig.Events); s3Error != ErrNone {
+		return s3Error
+	}
+
+	// Success.
+	return ErrNone
+}
+
+// Validates all incoming queue configs, checkQueueConfig validates if the
+// input fields for each queues is not malformed and has valid configuration
+// information.  If validation fails bucket notifications are not enabled.
+func validateQueueConfigs(queueConfigs []queueConfig) APIErrorCode {
+	for _, qConfig := range queueConfigs {
+		if s3Error := checkQueueConfig(qConfig); s3Error != ErrNone {
+			return s3Error
+		}
+	}
+	// Success.
+	return ErrNone
+}
+
+// Validates all the bucket notification configuration for their validity,
+// if one of the config is malformed or has invalid data it is rejected.
+// Configuration is never applied partially.
+func validateNotificationConfig(nConfig notificationConfig) APIErrorCode {
+	if s3Error := validateQueueConfigs(nConfig.QueueConfigurations); s3Error != ErrNone {
+		return s3Error
+	}
+	// Add validation for other configurations.
+	return ErrNone
+}
+
+// Unmarshals input value of AWS ARN format into minioSqs object.
+// Returned value represents minio sqs types, currently supported are
+// - amqp
+// - elasticsearch
+func unmarshalSqsArn(queueArn string) (mSqs arnMinioSqs) {
+	sqsType := strings.TrimPrefix(queueArn, minioSqs+serverConfig.GetRegion()+":")
+	mSqs = arnMinioSqs{}
+	switch sqsType {
+	case queueTypeAMQP:
+		mSqs.sqsType = queueTypeAMQP
+	case queueTypeElastic:
+		mSqs.sqsType = queueTypeElastic
+	case queueTypeRedis:
+		mSqs.sqsType = queueTypeRedis
+	} // Add more cases here.
+	return mSqs
+}

config-migrate.go

@@ -32,6 +32,8 @@ func migrateConfig() {
 	migrateV2ToV3()
 	// Migrate version '3' to '4'.
 	migrateV3ToV4()
+	// Migrate version '4' to '5'.
+	migrateV4ToV5()
 }
 
 // Version '1' is not supported anymore and deprecated, safe to delete.
@@ -124,8 +126,8 @@ func migrateV3ToV4() {
 	}
 
 	// Save only the new fields, ignore the rest.
-	srvConfig := &serverConfigV4{}
+	srvConfig := &configV4{}
-	srvConfig.Version = globalMinioConfigVersion
+	srvConfig.Version = "4"
 	srvConfig.Credential = cv3.Credential
 	srvConfig.Region = cv3.Region
 	if srvConfig.Region == "" {
@@ -146,3 +148,49 @@ func migrateV3ToV4() {
 
 	console.Println("Migration from version ‘" + cv3.Version + "’ to ‘" + srvConfig.Version + "’ completed successfully.")
 }
+
+// Version '4' to '5' migrates config, removes previous fields related
+// to backend types and server address. This change further simplifies
+// the config for future additions.
+func migrateV4ToV5() {
+	cv4, err := loadConfigV4()
+	if err != nil && os.IsNotExist(err) {
+		return
+	}
+	fatalIf(err, "Unable to load config version ‘4’.")
+	if cv4.Version != "4" {
+		return
+	}
+
+	// Save only the new fields, ignore the rest.
+	srvConfig := &serverConfigV5{}
+	srvConfig.Version = globalMinioConfigVersion
+	srvConfig.Credential = cv4.Credential
+	srvConfig.Region = cv4.Region
+	if srvConfig.Region == "" {
+		// Region needs to be set for AWS Signature Version 4.
+		srvConfig.Region = "us-east-1"
+	}
+	srvConfig.Logger.Console = cv4.Logger.Console
+	srvConfig.Logger.File = cv4.Logger.File
+	srvConfig.Logger.Syslog = cv4.Logger.Syslog
+	srvConfig.Logger.AMQP = amqpLogger{
+		Enable: false,
+	}
+	srvConfig.Logger.ElasticSearch = elasticSearchLogger{
+		Enable: false,
+	}
+	srvConfig.Logger.Redis = redisLogger{
+		Enable: false,
+	}
+
+	qc, err := quick.New(srvConfig)
+	fatalIf(err, "Unable to initialize the quick config.")
+	configFile, err := getConfigFile()
+	fatalIf(err, "Unable to get config file.")
+
+	err = qc.Save(configFile)
+	fatalIf(err, "Failed to migrate config from ‘"+cv4.Version+"’ to ‘"+srvConfig.Version+"’ failed.")
+
+	console.Println("Migration from version ‘" + cv4.Version + "’ to ‘" + srvConfig.Version + "’ completed successfully.")
+}

config-old.go

@@ -145,3 +145,53 @@ func loadConfigV3() (*configV3, error) {
 	}
 	return c, nil
 }
+
+type loggerV4 struct {
+	Console struct {
+		Enable bool   `json:"enable"`
+		Level  string `json:"level"`
+	} `json:"console"`
+	File struct {
+		Enable   bool   `json:"enable"`
+		Filename string `json:"fileName"`
+		Level    string `json:"level"`
+	} `json:"file"`
+	Syslog struct {
+		Enable bool   `json:"enable"`
+		Addr   string `json:"address"`
+		Level  string `json:"level"`
+	} `json:"syslog"`
+}
+
+// configV4 server configuration version '4'.
+type configV4 struct {
+	Version string `json:"version"`
+
+	// S3 API configuration.
+	Credential credential `json:"credential"`
+	Region     string     `json:"region"`
+
+	// Additional error logging configuration.
+	Logger loggerV4 `json:"logger"`
+}
+
+// loadConfigV4 load config version '4'.
+func loadConfigV4() (*configV4, error) {
+	configFile, err := getConfigFile()
+	if err != nil {
+		return nil, err
+	}
+	if _, err = os.Stat(configFile); err != nil {
+		return nil, err
+	}
+	c := &configV4{}
+	c.Version = "4"
+	qc, err := quick.New(c)
+	if err != nil {
+		return nil, err
+	}
+	if err := qc.Load(configFile); err != nil {
+		return nil, err
+	}
+	return c, nil
+}

config-v5.go

@@ -23,8 +23,8 @@ import (
 	"github.com/minio/minio/pkg/quick"
 )
 
-// serverConfigV4 server configuration version '4'.
+// serverConfigV5 server configuration version '5'.
-type serverConfigV4 struct {
+type serverConfigV5 struct {
 	Version string `json:"version"`
 
 	// S3 API configuration.
@@ -41,7 +41,7 @@ type serverConfigV4 struct {
 // initConfig - initialize server config. config version (called only once).
 func initConfig() error {
 	if !isConfigFileExists() {
-		srvCfg := &serverConfigV4{}
+		srvCfg := &serverConfigV5{}
 		srvCfg.Version = globalMinioConfigVersion
 		srvCfg.Region = "us-east-1"
 		srvCfg.Credential = mustGenAccessKeys()
@@ -76,7 +76,7 @@ func initConfig() error {
 	if _, err = os.Stat(configFile); err != nil {
 		return err
 	}
-	srvCfg := &serverConfigV4{}
+	srvCfg := &serverConfigV5{}
 	srvCfg.Version = globalMinioConfigVersion
 	srvCfg.rwMutex = &sync.RWMutex{}
 	qc, err := quick.New(srvCfg)
@@ -90,14 +90,15 @@ func initConfig() error {
 	serverConfig = srvCfg
 	// Set the version properly after the unmarshalled json is loaded.
 	serverConfig.Version = globalMinioConfigVersion
+
 	return nil
 }
 
 // serverConfig server config.
-var serverConfig *serverConfigV4
+var serverConfig *serverConfigV5
 
 // GetVersion get current config version.
-func (s serverConfigV4) GetVersion() string {
+func (s serverConfigV5) GetVersion() string {
 	s.rwMutex.RLock()
 	defer s.rwMutex.RUnlock()
 	return s.Version
@@ -105,78 +106,117 @@ func (s serverConfigV4) GetVersion() string {
 
 /// Logger related.
 
+func (s *serverConfigV5) SetAMQPLogger(amqpl amqpLogger) {
+	s.rwMutex.Lock()
+	defer s.rwMutex.Unlock()
+	s.Logger.AMQP = amqpl
+}
+
+// GetAMQPLogger get current AMQP logger.
+func (s serverConfigV5) GetAMQPLogger() amqpLogger {
+	s.rwMutex.RLock()
+	defer s.rwMutex.RUnlock()
+	return s.Logger.AMQP
+}
+
+func (s *serverConfigV5) SetElasticSearchLogger(esLogger elasticSearchLogger) {
+	s.rwMutex.Lock()
+	defer s.rwMutex.Unlock()
+	s.Logger.ElasticSearch = esLogger
+}
+
+// GetElasticSearchLogger get current ElasicSearch logger.
+func (s serverConfigV5) GetElasticSearchLogger() elasticSearchLogger {
+	s.rwMutex.RLock()
+	defer s.rwMutex.RUnlock()
+	return s.Logger.ElasticSearch
+}
+
+func (s *serverConfigV5) SetRedisLogger(rLogger redisLogger) {
+	s.rwMutex.Lock()
+	defer s.rwMutex.Unlock()
+	s.Logger.Redis = rLogger
+}
+
+// GetRedisLogger get current Redis logger.
+func (s serverConfigV5) GetRedisLogger() redisLogger {
+	s.rwMutex.RLock()
+	defer s.rwMutex.RUnlock()
+	return s.Logger.Redis
+}
+
 // SetFileLogger set new file logger.
-func (s *serverConfigV4) SetFileLogger(flogger fileLogger) {
+func (s *serverConfigV5) SetFileLogger(flogger fileLogger) {
 	s.rwMutex.Lock()
 	defer s.rwMutex.Unlock()
 	s.Logger.File = flogger
 }
 
 // GetFileLogger get current file logger.
-func (s serverConfigV4) GetFileLogger() fileLogger {
+func (s serverConfigV5) GetFileLogger() fileLogger {
 	s.rwMutex.RLock()
 	defer s.rwMutex.RUnlock()
 	return s.Logger.File
 }
 
 // SetConsoleLogger set new console logger.
-func (s *serverConfigV4) SetConsoleLogger(clogger consoleLogger) {
+func (s *serverConfigV5) SetConsoleLogger(clogger consoleLogger) {
 	s.rwMutex.Lock()
 	defer s.rwMutex.Unlock()
 	s.Logger.Console = clogger
 }
 
 // GetConsoleLogger get current console logger.
-func (s serverConfigV4) GetConsoleLogger() consoleLogger {
+func (s serverConfigV5) GetConsoleLogger() consoleLogger {
 	s.rwMutex.RLock()
 	defer s.rwMutex.RUnlock()
 	return s.Logger.Console
 }
 
 // SetSyslogLogger set new syslog logger.
-func (s *serverConfigV4) SetSyslogLogger(slogger syslogLogger) {
+func (s *serverConfigV5) SetSyslogLogger(slogger syslogLogger) {
 	s.rwMutex.Lock()
 	defer s.rwMutex.Unlock()
 	s.Logger.Syslog = slogger
 }
 
 // GetSyslogLogger get current syslog logger.
-func (s *serverConfigV4) GetSyslogLogger() syslogLogger {
+func (s *serverConfigV5) GetSyslogLogger() syslogLogger {
 	s.rwMutex.RLock()
 	defer s.rwMutex.RUnlock()
 	return s.Logger.Syslog
 }
 
 // SetRegion set new region.
-func (s *serverConfigV4) SetRegion(region string) {
+func (s *serverConfigV5) SetRegion(region string) {
 	s.rwMutex.Lock()
 	defer s.rwMutex.Unlock()
 	s.Region = region
 }
 
 // GetRegion get current region.
-func (s serverConfigV4) GetRegion() string {
+func (s serverConfigV5) GetRegion() string {
 	s.rwMutex.RLock()
 	defer s.rwMutex.RUnlock()
 	return s.Region
 }
 
 // SetCredentials set new credentials.
-func (s *serverConfigV4) SetCredential(creds credential) {
+func (s *serverConfigV5) SetCredential(creds credential) {
 	s.rwMutex.Lock()
 	defer s.rwMutex.Unlock()
 	s.Credential = creds
 }
 
 // GetCredentials get current credentials.
-func (s serverConfigV4) GetCredential() credential {
+func (s serverConfigV5) GetCredential() credential {
 	s.rwMutex.RLock()
 	defer s.rwMutex.RUnlock()
 	return s.Credential
 }
 
 // Save config.
-func (s serverConfigV4) Save() error {
+func (s serverConfigV5) Save() error {
 	s.rwMutex.RLock()
 	defer s.rwMutex.RUnlock()
 

fs-v1.go

@@ -64,17 +64,29 @@ func loadFormatFS(storageDisk StorageAPI) (format formatConfigV1, err error) {
 
 // Should be called when process shuts down.
 func shutdownFS(storage StorageAPI) {
+	// List if there are any multipart entries.
 	_, err := storage.ListDir(minioMetaBucket, mpartMetaPrefix)
 	if err != errFileNotFound {
-		// Multipart directory is not empty hence do not remove .minio volume.
+		// Multipart directory is not empty hence do not remove '.minio.sys' volume.
 		os.Exit(0)
 	}
+	// List if there are any bucket configuration entries.
+	_, err = storage.ListDir(minioMetaBucket, bucketConfigPrefix)
+	if err != errFileNotFound {
+		// Bucket config directory is not empty hence do not remove '.minio.sys' volume.
+		os.Exit(0)
+	}
+	// Cleanup everything else.
 	prefix := ""
-	if err := cleanupDir(storage, minioMetaBucket, prefix); err != nil {
+	if err = cleanupDir(storage, minioMetaBucket, prefix); err != nil {
-		os.Exit(0)
+		errorIf(err, "Unable to cleanup minio meta bucket")
-		return
+		os.Exit(1)
 	}
-	storage.DeleteVol(minioMetaBucket)
+	if err = storage.DeleteVol(minioMetaBucket); err != nil {
+		errorIf(err, "Unable to delete minio meta bucket", minioMetaBucket)
+		os.Exit(1)
+	}
+	// Successful exit.
 	os.Exit(0)
 }
 
@@ -184,6 +196,10 @@ func (fs fsObjects) ListBuckets() ([]BucketInfo, error) {
 		if !IsValidBucketName(vol.Name) {
 			continue
 		}
+		// Ignore the volume special bucket.
+		if vol.Name == minioMetaBucket {
+			continue
+		}
 		bucketInfos = append(bucketInfos, BucketInfo{
 			Name:    vol.Name,
 			Created: vol.Created,

generic-handlers.go

@@ -275,7 +275,6 @@ var notimplementedBucketResourceNames = map[string]bool{
 	"cors":           true,
 	"lifecycle":      true,
 	"logging":        true,
-	"notification":   true,
 	"replication":    true,
 	"tagging":        true,
 	"versions":       true,

globals.go

@@ -28,7 +28,7 @@ const (
 
 // minio configuration related constants.
 const (
-	globalMinioConfigVersion = "4"
+	globalMinioConfigVersion = "5"
 	globalMinioConfigDir     = ".minio"
 	globalMinioCertsDir      = "certs"
 	globalMinioCertFile      = "public.crt"

handler-utils.go

@@ -17,7 +17,10 @@
 package main
 
 import (
+	"bytes"
 	"io"
+	"io/ioutil"
+	"mime/multipart"
 	"net/http"
 	"strings"
 )
@@ -95,3 +98,30 @@ func extractMetadataFromHeader(header http.Header) map[string]string {
 	// Return.
 	return metadata
 }
+
+func extractHTTPFormValues(reader *multipart.Reader) (io.Reader, map[string]string, error) {
+	/// HTML Form values
+	formValues := make(map[string]string)
+	filePart := new(bytes.Buffer)
+	var err error
+	for err == nil {
+		var part *multipart.Part
+		part, err = reader.NextPart()
+		if part != nil {
+			if part.FileName() == "" {
+				var buffer []byte
+				buffer, err = ioutil.ReadAll(part)
+				if err != nil {
+					return nil, nil, err
+				}
+				formValues[http.CanonicalHeaderKey(part.FormName())] = string(buffer)
+			} else {
+				if _, err = io.Copy(filePart, part); err != nil {
+					return nil, nil, err
+				}
+			}
+		}
+	}
+	return filePart, formValues, nil
+
+}

logger-amqp.go

@@ -0,0 +1,151 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"errors"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/streadway/amqp"
+)
+
+// amqpLogger - represents logrus compatible AMQP hook.
+// All fields represent AMQP configuration details.
+type amqpLogger struct {
+	Enable       bool   `json:"enable"`
+	Level        string `json:"level"`
+	URL          string `json:"url"`
+	Exchange     string `json:"exchange"`
+	RoutingKey   string `json:"routineKey"`
+	ExchangeType string `json:"exchangeType"`
+	Mandatory    bool   `json:"mandatory"`
+	Immediate    bool   `json:"immediate"`
+	Durable      bool   `json:"durable"`
+	Internal     bool   `json:"internal"`
+	NoWait       bool   `json:"noWait"`
+	AutoDeleted  bool   `json:"autoDeleted"`
+}
+
+type amqpConn struct {
+	params amqpLogger
+	*amqp.Connection
+}
+
+func dialAMQP(amqpL amqpLogger) (amqpConn, error) {
+	conn, err := amqp.Dial(amqpL.URL)
+	if err != nil {
+		return amqpConn{}, err
+	}
+	return amqpConn{Connection: conn, params: amqpL}, nil
+}
+
+var errLoggerNotEnabled = errors.New("logger type not enabled")
+
+func enableAMQPLogger() error {
+	amqpL := serverConfig.GetAMQPLogger()
+	if !amqpL.Enable {
+		return errLoggerNotEnabled
+	}
+
+	// Connect to amqp server.
+	amqpC, err := dialAMQP(amqpL)
+	if err != nil {
+		return err
+	}
+
+	lvl, err := logrus.ParseLevel(amqpL.Level)
+	fatalIf(err, "Unknown log level found in the config file.")
+
+	// Add a amqp hook.
+	log.Hooks.Add(amqpC)
+
+	// Set default JSON formatter.
+	log.Formatter = new(logrus.JSONFormatter)
+
+	// Set default log level to info.
+	log.Level = lvl
+
+	// Successfully enabled.
+	return nil
+}
+
+// Fire is called when an event should be sent to the message broker.
+func (q amqpConn) Fire(entry *logrus.Entry) error {
+	ch, err := q.Connection.Channel()
+	if err != nil {
+		// Any other error other than connection closed, return.
+		if err != amqp.ErrClosed {
+			return err
+		}
+		// Attempt to connect again.
+		var conn *amqp.Connection
+		conn, err = amqp.Dial(q.params.URL)
+		if err != nil {
+			return err
+		}
+		ch, err = conn.Channel()
+		if err != nil {
+			return err
+		}
+	}
+	defer ch.Close()
+
+	err = ch.ExchangeDeclare(
+		q.params.Exchange,
+		q.params.ExchangeType,
+		q.params.Durable,
+		q.params.AutoDeleted,
+		q.params.Internal,
+		q.params.NoWait,
+		nil,
+	)
+	if err != nil {
+		return err
+	}
+
+	body, err := entry.String()
+	if err != nil {
+		return err
+	}
+
+	err = ch.Publish(
+		q.params.Exchange,
+		q.params.RoutingKey,
+		q.params.Mandatory,
+		q.params.Immediate,
+		amqp.Publishing{
+			ContentType: "application/json",
+			Body:        []byte(body),
+		})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Levels is available logging levels.
+func (q amqpConn) Levels() []logrus.Level {
+	return []logrus.Level{
+		logrus.PanicLevel,
+		logrus.FatalLevel,
+		logrus.ErrorLevel,
+		logrus.WarnLevel,
+		logrus.InfoLevel,
+		logrus.DebugLevel,
+	}
+}

logger-elasticsearch.go

@@ -0,0 +1,116 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"errors"
+
+	"github.com/Sirupsen/logrus"
+	"gopkg.in/olivere/elastic.v3"
+)
+
+// elasticQueue is a elasticsearch event notification queue.
+type elasticSearchLogger struct {
+	Enable bool   `json:"enable"`
+	Level  string `json:"level"`
+	URL    string `json:"url"`
+	Index  string `json:"index"`
+}
+
+type elasticClient struct {
+	*elastic.Client
+	params elasticSearchLogger
+}
+
+// Connects to elastic search instance at URL.
+func dialElastic(url string) (*elastic.Client, error) {
+	client, err := elastic.NewClient(elastic.SetURL(url), elastic.SetSniff(false))
+	if err != nil {
+		return nil, err
+	}
+	return client, nil
+}
+
+// Enables elasticsearch logger.
+func enableElasticLogger() error {
+	esLogger := serverConfig.GetElasticSearchLogger()
+	if !esLogger.Enable {
+		return errLoggerNotEnabled
+	}
+	client, err := dialElastic(esLogger.URL)
+	if err != nil {
+		return err
+	}
+
+	// Use the IndexExists service to check if a specified index exists.
+	exists, err := client.IndexExists(esLogger.Index).Do()
+	if err != nil {
+		return err
+	}
+	// Index does not exist, attempt to create it.
+	if !exists {
+		var createIndex *elastic.IndicesCreateResult
+		createIndex, err = client.CreateIndex(esLogger.Index).Do()
+		if err != nil {
+			return err
+		}
+		if !createIndex.Acknowledged {
+			return errors.New("index not created")
+		}
+	}
+
+	elasticCl := elasticClient{
+		Client: client,
+		params: esLogger,
+	}
+
+	lvl, err := logrus.ParseLevel(esLogger.Level)
+	fatalIf(err, "Unknown log level found in the config file.")
+
+	// Add a elasticsearch hook.
+	log.Hooks.Add(elasticCl)
+
+	// Set default JSON formatter.
+	log.Formatter = new(logrus.JSONFormatter)
+
+	// Set default log level to info.
+	log.Level = lvl
+
+	return nil
+}
+
+// Fire is required to implement logrus hook
+func (q elasticClient) Fire(entry *logrus.Entry) error {
+	_, err := q.Client.Index().Index(q.params.Index).
+		Type("event").
+		BodyJson(entry.Data).
+		Do()
+
+	return err
+}
+
+// Required for logrus hook implementation
+func (q elasticClient) Levels() []logrus.Level {
+	return []logrus.Level{
+		logrus.PanicLevel,
+		logrus.FatalLevel,
+		logrus.ErrorLevel,
+		logrus.WarnLevel,
+		logrus.InfoLevel,
+		logrus.DebugLevel,
+	}
+}

logger-redis.go

@@ -0,0 +1,136 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"time"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/minio/redigo/redis"
+)
+
+// redisLogger to send logs to Redis server
+type redisLogger struct {
+	Enable   bool   `json:"enable"`
+	Level    string `json:"level"`
+	Addr     string `json:"address"`
+	Password string `json:"password"`
+	Key      string `json:"key"`
+}
+
+type redisConn struct {
+	*redis.Pool
+	params redisLogger
+}
+
+// Dial a new connection to redis instance at addr, optionally with a password if any.
+func dialRedis(addr, password string) (*redis.Pool, error) {
+	rPool := &redis.Pool{
+		MaxIdle:     3,
+		IdleTimeout: 240 * time.Second,
+		Dial: func() (redis.Conn, error) {
+			c, err := redis.Dial("tcp", addr)
+			if err != nil {
+				return nil, err
+			}
+			if password != "" {
+				if _, err := c.Do("AUTH", password); err != nil {
+					c.Close()
+					return nil, err
+				}
+			}
+			return c, err
+		},
+		TestOnBorrow: func(c redis.Conn, t time.Time) error {
+			_, err := c.Do("PING")
+			return err
+		},
+	}
+
+	// Test if connection with REDIS can be established.
+	rConn := rPool.Get()
+	defer rConn.Close()
+
+	// Check connection.
+	_, err := rConn.Do("PING")
+	if err != nil {
+		return nil, err
+	}
+
+	// Return pool.
+	return rPool, nil
+}
+
+func enableRedisLogger() error {
+	rLogger := serverConfig.GetRedisLogger()
+	if !rLogger.Enable {
+		return errLoggerNotEnabled
+	}
+
+	// Dial redis.
+	rPool, err := dialRedis(rLogger.Addr, rLogger.Password)
+	if err != nil {
+		return err
+	}
+
+	rrConn := redisConn{
+		Pool:   rPool,
+		params: rLogger,
+	}
+
+	lvl, err := logrus.ParseLevel(rLogger.Level)
+	fatalIf(err, "Unknown log level found in the config file.")
+
+	// Add a elasticsearch hook.
+	log.Hooks.Add(rrConn)
+
+	// Set default JSON formatter.
+	log.Formatter = new(logrus.JSONFormatter)
+
+	// Set default log level to info.
+	log.Level = lvl
+
+	return nil
+}
+
+func (r redisConn) Fire(entry *logrus.Entry) error {
+	rConn := r.Pool.Get()
+	defer rConn.Close()
+
+	data, err := entry.String()
+	if err != nil {
+		return err
+	}
+
+	_, err = rConn.Do("RPUSH", r.params.Key, data)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// Required for logrus hook implementation
+func (r redisConn) Levels() []logrus.Level {
+	return []logrus.Level{
+		logrus.PanicLevel,
+		logrus.FatalLevel,
+		logrus.ErrorLevel,
+		logrus.WarnLevel,
+		logrus.InfoLevel,
+		logrus.DebugLevel,
+	}
+}

logger.go

@@ -20,7 +20,6 @@ import (
 	"bufio"
 	"bytes"
 	"os"
-	"reflect"
 	"runtime"
 	"runtime/debug"
 	"strconv"
@@ -40,11 +39,16 @@ var log = logrus.New() // Default console logger.
 //   - console [default]
 //   - file
 //   - syslog
+//   - amqp
+//   - elasticsearch
 //
 type logger struct {
-	Console consoleLogger `json:"console"`
+	Console       consoleLogger       `json:"console"`
-	File    fileLogger    `json:"file"`
+	File          fileLogger          `json:"file"`
-	Syslog  syslogLogger  `json:"syslog"`
+	Syslog        syslogLogger        `json:"syslog"`
+	AMQP          amqpLogger          `json:"amqp"`
+	ElasticSearch elasticSearchLogger `json:"elasticsearch"`
+	Redis         redisLogger         `json:"redis"`
 	// Add new loggers here.
 }
 
@@ -91,11 +95,8 @@ func errorIf(err error, msg string, data ...interface{}) {
 	if err == nil {
 		return
 	}
-	sysInfo := sysInfo()
 	fields := logrus.Fields{
-		"cause":   err.Error(),
+		"cause": err.Error(),
-		"type":    reflect.TypeOf(err),
-		"sysInfo": sysInfo,
 	}
 	if globalTrace {
 		fields["stack"] = "\n" + stackInfo()
@@ -108,11 +109,8 @@ func fatalIf(err error, msg string, data ...interface{}) {
 	if err == nil {
 		return
 	}
-	sysInfo := sysInfo()
 	fields := logrus.Fields{
-		"cause":   err.Error(),
+		"cause": err.Error(),
-		"type":    reflect.TypeOf(err),
-		"sysInfo": sysInfo,
 	}
 	if globalTrace {
 		fields["stack"] = "\n" + stackInfo()

main.go

@@ -77,6 +77,10 @@ func enableLoggers() {
 	enableConsoleLogger()
 	enableFileLogger()
 
+	// Adding new bucket notification related loggers.
+	enableAMQPLogger()
+	enableElasticLogger()
+
 	// Add your logger here.
 }
 

object-handlers.go

@@ -157,6 +157,7 @@ func (api objectAPIHandlers) GetObjectHandler(w http.ResponseWriter, r *http.Req
 		}
 		return w.Write(p)
 	})
+
 	// Reads the object at startOffset and writes to mw.
 	if err := api.ObjectAPI.GetObject(bucket, object, startOffset, length, writer); err != nil {
 		errorIf(err, "Unable to write to client.")
@@ -353,6 +354,16 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
 	writeSuccessResponse(w, encodedSuccessResponse)
 	// Explicitly close the reader, to avoid fd leaks.
 	pipeReader.Close()
+
+	// Load notification config if any.
+	nConfig, err := api.loadNotificationConfig(bucket)
+	if err != nil {
+		errorIf(err, "Unable to load notification config for bucket: \"%s\"", bucket)
+		return
+	}
+
+	// Notify object created event.
+	notifyObjectCreatedEvent(nConfig, ObjectCreatedCopy, bucket, object, objInfo.MD5Sum, objInfo.Size)
 }
 
 // PutObjectHandler - PUT Object
@@ -422,6 +433,16 @@ func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Req
 		w.Header().Set("ETag", "\""+md5Sum+"\"")
 	}
 	writeSuccessResponse(w, nil)
+
+	// Load notification config if any.
+	nConfig, err := api.loadNotificationConfig(bucket)
+	if err != nil {
+		errorIf(err, "Unable to load notification config for bucket: \"%s\"", bucket)
+		return
+	}
+
+	// Notify object created event.
+	notifyObjectCreatedEvent(nConfig, ObjectCreatedPut, bucket, object, md5Sum, size)
 }
 
 /// Multipart objectAPIHandlers
@@ -645,7 +666,6 @@ func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWrite
 	uploadID, _, _, _ := getObjectResources(r.URL.Query())
 
 	var md5Sum string
-	var err error
 	switch getRequestAuthType(r) {
 	default:
 		// For all unknown auth types return error.
@@ -711,7 +731,6 @@ func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWrite
 	}(doneCh)
 
 	sendWhiteSpaceChars(w, doneCh)
-
 	if err != nil {
 		errorIf(err, "Unable to complete multipart upload.")
 		switch oErr := err.(type) {
@@ -735,9 +754,21 @@ func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWrite
 		writeErrorResponseNoHeader(w, r, ErrInternalError, r.URL.Path)
 		return
 	}
-	// write success response.
+
+	// Write success response.
 	w.Write(encodedSuccessResponse)
 	w.(http.Flusher).Flush()
+
+	// Load notification config if any.
+	nConfig, err := api.loadNotificationConfig(bucket)
+	if err != nil {
+		errorIf(err, "Unable to load notification config for bucket: \"%s\"", bucket)
+		return
+	}
+
+	// Notify object created event.
+	size := int64(0) // FIXME: support event size.
+	notifyObjectCreatedEvent(nConfig, ObjectCreatedCompleteMultipartUpload, bucket, object, md5Sum, size)
 }
 
 /// Delete objectAPIHandlers
@@ -768,6 +799,19 @@ func (api objectAPIHandlers) DeleteObjectHandler(w http.ResponseWriter, r *http.
 	/// http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectDELETE.html
 	/// Ignore delete object errors, since we are suppposed to reply
 	/// only 204.
-	api.ObjectAPI.DeleteObject(bucket, object)
+	if err := api.ObjectAPI.DeleteObject(bucket, object); err != nil {
+		writeSuccessNoContent(w)
+		return
+	}
 	writeSuccessNoContent(w)
+
+	// Load notification config if any.
+	nConfig, err := api.loadNotificationConfig(bucket)
+	if err != nil {
+		errorIf(err, "Unable to load notification config for bucket: \"%s\"", bucket)
+		return
+	}
+
+	// Notify object deleted event.
+	notifyObjectDeletedEvent(nConfig, bucket, object)
 }

object-utils.go

@@ -46,6 +46,10 @@ var isIPAddress = regexp.MustCompile(`^(\d+\.){3}\d+$`)
 // and periods, but must begin and end with a lowercase letter or a number.
 // See: http://docs.aws.amazon.com/AmazonS3/latest/dev/BucketRestrictions.html
 func IsValidBucketName(bucket string) bool {
+	// Special case when bucket is equal to 'metaBucket'.
+	if bucket == minioMetaBucket {
+		return true
+	}
 	if len(bucket) < 3 || len(bucket) > 63 {
 		return false
 	}

queues.go

@@ -0,0 +1,193 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"net/url"
+	"time"
+
+	"github.com/Sirupsen/logrus"
+)
+
+const (
+	minioSqs = "arn:minio:sqs:"
+	// Static string indicating queue type 'amqp'.
+	queueTypeAMQP = "1:amqp"
+	// Static string indicating queue type 'elasticsearch'.
+	queueTypeElastic = "1:elasticsearch"
+	// Static string indicating queue type 'redis'.
+	queueTypeRedis = "1:redis"
+)
+
+// Returns true if queueArn is for an AMQP queue.
+func isAMQPQueue(sqsArn arnMinioSqs) bool {
+	if sqsArn.sqsType == queueTypeAMQP {
+		amqpL := serverConfig.GetAMQPLogger()
+		if !amqpL.Enable {
+			return false
+		}
+		// Connect to amqp server to validate.
+		amqpC, err := dialAMQP(amqpL)
+		if err != nil {
+			errorIf(err, "Unable to connect to amqp service.", amqpL)
+			return false
+		}
+		defer amqpC.Close()
+	}
+	return true
+}
+
+// Returns true if queueArn is for an Redis queue.
+func isRedisQueue(sqsArn arnMinioSqs) bool {
+	if sqsArn.sqsType == queueTypeRedis {
+		rLogger := serverConfig.GetRedisLogger()
+		if !rLogger.Enable {
+			return false
+		}
+		// Connect to redis server to validate.
+		rPool, err := dialRedis(rLogger.Addr, rLogger.Password)
+		if err != nil {
+			errorIf(err, "Unable to connect to redis service.", rLogger)
+			return false
+		}
+		defer rPool.Close()
+	}
+	return true
+}
+
+// Returns true if queueArn is for an ElasticSearch queue.
+func isElasticQueue(sqsArn arnMinioSqs) bool {
+	if sqsArn.sqsType == queueTypeElastic {
+		esLogger := serverConfig.GetElasticSearchLogger()
+		if !esLogger.Enable {
+			return false
+		}
+		elasticC, err := dialElastic(esLogger.URL)
+		if err != nil {
+			errorIf(err, "Unable to connect to elasticsearch service.", esLogger.URL)
+			return false
+		}
+		defer elasticC.Stop()
+	}
+	return true
+}
+
+// Match function matches wild cards in 'pattern' for events.
+func eventMatch(eventType EventName, events []string) (ok bool) {
+	for _, event := range events {
+		ok = wildCardMatch(event, eventType.String())
+		if ok {
+			break
+		}
+	}
+	return ok
+}
+
+// NotifyObjectCreatedEvent - notifies a new 's3:ObjectCreated' event.
+// List of events reported through this function are
+//  - s3:ObjectCreated:Put
+//  - s3:ObjectCreated:Post
+//  - s3:ObjectCreated:Copy
+//  - s3:ObjectCreated:CompleteMultipartUpload
+func notifyObjectCreatedEvent(nConfig notificationConfig, eventType EventName, bucket string, object string, etag string, size int64) {
+	/// Construct a new object created event.
+	region := serverConfig.GetRegion()
+	tnow := time.Now().UTC()
+	sequencer := fmt.Sprintf("%X", tnow.UnixNano())
+	// Following blocks fills in all the necessary details of s3 event message structure.
+	// http://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html
+	events := []*NotificationEvent{
+		&NotificationEvent{
+			EventVersion:      "2.0",
+			EventSource:       "aws:s3",
+			AwsRegion:         region,
+			EventTime:         tnow.Format(iso8601Format),
+			EventName:         eventType.String(),
+			UserIdentity:      defaultIdentity(),
+			RequestParameters: map[string]string{},
+			ResponseElements:  map[string]string{},
+			S3: s3Reference{
+				SchemaVersion:   "1.0",
+				ConfigurationID: "Config",
+				Bucket: s3BucketReference{
+					Name:          bucket,
+					OwnerIdentity: defaultIdentity(),
+					ARN:           "arn:aws:s3:::" + bucket,
+				},
+				Object: s3ObjectReference{
+					Key:       url.QueryEscape(object),
+					ETag:      etag,
+					Size:      size,
+					Sequencer: sequencer,
+				},
+			},
+		},
+	}
+	// Notify to all the configured queues.
+	for _, qConfig := range nConfig.QueueConfigurations {
+		if eventMatch(eventType, qConfig.Events) {
+			log.WithFields(logrus.Fields{
+				"Records": events,
+			}).Info()
+		}
+	}
+}
+
+// NotifyObjectRemovedEvent - notifies a new 's3:ObjectRemoved' event.
+// List of events reported through this function are
+//  - s3:ObjectRemoved:Delete
+func notifyObjectDeletedEvent(nConfig notificationConfig, bucket string, object string) {
+	region := serverConfig.GetRegion()
+	tnow := time.Now().UTC()
+	sequencer := fmt.Sprintf("%X", tnow.UnixNano())
+	// Following blocks fills in all the necessary details of s3 event message structure.
+	// http://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html
+	events := []*NotificationEvent{
+		&NotificationEvent{
+			EventVersion:      "2.0",
+			EventSource:       "aws:s3",
+			AwsRegion:         region,
+			EventTime:         tnow.Format(iso8601Format),
+			EventName:         ObjectRemovedDelete.String(),
+			UserIdentity:      defaultIdentity(),
+			RequestParameters: map[string]string{},
+			ResponseElements:  map[string]string{},
+			S3: s3Reference{
+				SchemaVersion:   "1.0",
+				ConfigurationID: "Config",
+				Bucket: s3BucketReference{
+					Name:          bucket,
+					OwnerIdentity: defaultIdentity(),
+					ARN:           "arn:aws:s3:::" + bucket,
+				},
+				Object: s3ObjectReference{
+					Key:       url.QueryEscape(object),
+					Sequencer: sequencer,
+				},
+			},
+		},
+	}
+	// Notify to all the configured queues.
+	for _, qConfig := range nConfig.QueueConfigurations {
+		if eventMatch(ObjectRemovedDelete, qConfig.Events) {
+			log.WithFields(logrus.Fields{
+				"Records": events,
+			}).Info()
+		}
+	}
+}

server_test.go

@@ -758,6 +758,7 @@ func (s *TestSuiteCommon) TestPutObject(c *C) {
 	c.Assert(n, Equals, int64(len([]byte("hello world"))))
 	// asserted the contents of the fetched object with the expected result.
 	c.Assert(true, Equals, bytes.Equal(buffer2.Bytes(), []byte("hello world")))
+
 }
 
 // TestListBuckets - Make request for listing of all buckets.
@@ -2141,4 +2142,5 @@ func (s *TestSuiteCommon) TestObjectMultipart(c *C) {
 	c.Assert(err, IsNil)
 	// verify whether complete multipart was successfull.
 	c.Assert(response.StatusCode, Equals, http.StatusOK)
+
 }

vendor/github.com/facebookgo/clock/README.md

@@ -1,104 +0,0 @@
-clock [![Build Status](https://drone.io/github.com/benbjohnson/clock/status.png)](https://drone.io/github.com/benbjohnson/clock/latest) [![Coverage Status](https://coveralls.io/repos/benbjohnson/clock/badge.png?branch=master)](https://coveralls.io/r/benbjohnson/clock?branch=master) [![GoDoc](https://godoc.org/github.com/benbjohnson/clock?status.png)](https://godoc.org/github.com/benbjohnson/clock) ![Project status](http://img.shields.io/status/experimental.png?color=red)
-=====
-
-Clock is a small library for mocking time in Go. It provides an interface
-around the standard library's [`time`][time] package so that the application
-can use the realtime clock while tests can use the mock clock.
-
-[time]: http://golang.org/pkg/time/
-
-
-## Usage
-
-### Realtime Clock
-
-Your application can maintain a `Clock` variable that will allow realtime and
-mock clocks to be interchangable. For example, if you had an `Application` type:
-
-```go
-import "github.com/benbjohnson/clock"
-
-type Application struct {
-	Clock clock.Clock
-}
-```
-
-You could initialize it to use the realtime clock like this:
-
-```go
-var app Application
-app.Clock = clock.New()
-...
-```
-
-Then all timers and time-related functionality should be performed from the
-`Clock` variable.
-
-
-### Mocking time
-
-In your tests, you will want to use a `Mock` clock:
-
-```go
-import (
-	"testing"
-
-	"github.com/benbjohnson/clock"
-)
-
-func TestApplication_DoSomething(t *testing.T) {
-	mock := clock.NewMock()
-	app := Application{Clock: mock}
-	...
-}
-```
-
-Now that you've initialized your application to use the mock clock, you can
-adjust the time programmatically. The mock clock always starts from the Unix
-epoch (midnight, Jan 1, 1970 UTC).
-
-
-### Controlling time
-
-The mock clock provides the same functions that the standard library's `time`
-package provides. For example, to find the current time, you use the `Now()`
-function:
-
-```go
-mock := clock.NewMock()
-
-// Find the current time.
-mock.Now().UTC() // 1970-01-01 00:00:00 +0000 UTC
-
-// Move the clock forward.
-mock.Add(2 * time.Hour)
-
-// Check the time again. It's 2 hours later!
-mock.Now().UTC() // 1970-01-01 02:00:00 +0000 UTC
-```
-
-Timers and Tickers are also controlled by this same mock clock. They will only
-execute when the clock is moved forward:
-
-```
-mock := clock.NewMock()
-count := 0
-
-// Kick off a timer to increment every 1 mock second.
-go func() {
-    ticker := clock.Ticker(1 * time.Second)
-    for {
-        <-ticker.C
-        count++
-    }
-}()
-runtime.Gosched()
-
-// Move the clock forward 10 second.
-mock.Add(10 * time.Second)
-
-// This prints 10.
-fmt.Println(count)
-```
-
-

vendor/github.com/facebookgo/clock/clock.go

@@ -1,363 +0,0 @@
-package clock
-
-import (
-	"runtime"
-	"sort"
-	"sync"
-	"time"
-)
-
-// Clock represents an interface to the functions in the standard library time
-// package. Two implementations are available in the clock package. The first
-// is a real-time clock which simply wraps the time package's functions. The
-// second is a mock clock which will only make forward progress when
-// programmatically adjusted.
-type Clock interface {
-	After(d time.Duration) <-chan time.Time
-	AfterFunc(d time.Duration, f func()) *Timer
-	Now() time.Time
-	Sleep(d time.Duration)
-	Tick(d time.Duration) <-chan time.Time
-	Ticker(d time.Duration) *Ticker
-	Timer(d time.Duration) *Timer
-}
-
-// New returns an instance of a real-time clock.
-func New() Clock {
-	return &clock{}
-}
-
-// clock implements a real-time clock by simply wrapping the time package functions.
-type clock struct{}
-
-func (c *clock) After(d time.Duration) <-chan time.Time { return time.After(d) }
-
-func (c *clock) AfterFunc(d time.Duration, f func()) *Timer {
-	return &Timer{timer: time.AfterFunc(d, f)}
-}
-
-func (c *clock) Now() time.Time { return time.Now() }
-
-func (c *clock) Sleep(d time.Duration) { time.Sleep(d) }
-
-func (c *clock) Tick(d time.Duration) <-chan time.Time { return time.Tick(d) }
-
-func (c *clock) Ticker(d time.Duration) *Ticker {
-	t := time.NewTicker(d)
-	return &Ticker{C: t.C, ticker: t}
-}
-
-func (c *clock) Timer(d time.Duration) *Timer {
-	t := time.NewTimer(d)
-	return &Timer{C: t.C, timer: t}
-}
-
-// Mock represents a mock clock that only moves forward programmically.
-// It can be preferable to a real-time clock when testing time-based functionality.
-type Mock struct {
-	mu     sync.Mutex
-	now    time.Time   // current time
-	timers clockTimers // tickers & timers
-
-	calls      Calls
-	waiting    []waiting
-	callsMutex sync.Mutex
-}
-
-// NewMock returns an instance of a mock clock.
-// The current time of the mock clock on initialization is the Unix epoch.
-func NewMock() *Mock {
-	return &Mock{now: time.Unix(0, 0)}
-}
-
-// Add moves the current time of the mock clock forward by the duration.
-// This should only be called from a single goroutine at a time.
-func (m *Mock) Add(d time.Duration) {
-	// Calculate the final current time.
-	t := m.now.Add(d)
-
-	// Continue to execute timers until there are no more before the new time.
-	for {
-		if !m.runNextTimer(t) {
-			break
-		}
-	}
-
-	// Ensure that we end with the new time.
-	m.mu.Lock()
-	m.now = t
-	m.mu.Unlock()
-
-	// Give a small buffer to make sure the other goroutines get handled.
-	gosched()
-}
-
-// runNextTimer executes the next timer in chronological order and moves the
-// current time to the timer's next tick time. The next time is not executed if
-// it's next time if after the max time. Returns true if a timer is executed.
-func (m *Mock) runNextTimer(max time.Time) bool {
-	m.mu.Lock()
-
-	// Sort timers by time.
-	sort.Sort(m.timers)
-
-	// If we have no more timers then exit.
-	if len(m.timers) == 0 {
-		m.mu.Unlock()
-		return false
-	}
-
-	// Retrieve next timer. Exit if next tick is after new time.
-	t := m.timers[0]
-	if t.Next().After(max) {
-		m.mu.Unlock()
-		return false
-	}
-
-	// Move "now" forward and unlock clock.
-	m.now = t.Next()
-	m.mu.Unlock()
-
-	// Execute timer.
-	t.Tick(m.now)
-	return true
-}
-
-// After waits for the duration to elapse and then sends the current time on the returned channel.
-func (m *Mock) After(d time.Duration) <-chan time.Time {
-	defer m.inc(&m.calls.After)
-	return m.Timer(d).C
-}
-
-// AfterFunc waits for the duration to elapse and then executes a function.
-// A Timer is returned that can be stopped.
-func (m *Mock) AfterFunc(d time.Duration, f func()) *Timer {
-	defer m.inc(&m.calls.AfterFunc)
-	t := m.Timer(d)
-	t.C = nil
-	t.fn = f
-	return t
-}
-
-// Now returns the current wall time on the mock clock.
-func (m *Mock) Now() time.Time {
-	defer m.inc(&m.calls.Now)
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	return m.now
-}
-
-// Sleep pauses the goroutine for the given duration on the mock clock.
-// The clock must be moved forward in a separate goroutine.
-func (m *Mock) Sleep(d time.Duration) {
-	defer m.inc(&m.calls.Sleep)
-	<-m.After(d)
-}
-
-// Tick is a convenience function for Ticker().
-// It will return a ticker channel that cannot be stopped.
-func (m *Mock) Tick(d time.Duration) <-chan time.Time {
-	defer m.inc(&m.calls.Tick)
-	return m.Ticker(d).C
-}
-
-// Ticker creates a new instance of Ticker.
-func (m *Mock) Ticker(d time.Duration) *Ticker {
-	defer m.inc(&m.calls.Ticker)
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	ch := make(chan time.Time)
-	t := &Ticker{
-		C:    ch,
-		c:    ch,
-		mock: m,
-		d:    d,
-		next: m.now.Add(d),
-	}
-	m.timers = append(m.timers, (*internalTicker)(t))
-	return t
-}
-
-// Timer creates a new instance of Timer.
-func (m *Mock) Timer(d time.Duration) *Timer {
-	defer m.inc(&m.calls.Timer)
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	ch := make(chan time.Time)
-	t := &Timer{
-		C:    ch,
-		c:    ch,
-		mock: m,
-		next: m.now.Add(d),
-	}
-	m.timers = append(m.timers, (*internalTimer)(t))
-	return t
-}
-
-func (m *Mock) removeClockTimer(t clockTimer) {
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	for i, timer := range m.timers {
-		if timer == t {
-			copy(m.timers[i:], m.timers[i+1:])
-			m.timers[len(m.timers)-1] = nil
-			m.timers = m.timers[:len(m.timers)-1]
-			break
-		}
-	}
-	sort.Sort(m.timers)
-}
-
-func (m *Mock) inc(addr *uint32) {
-	m.callsMutex.Lock()
-	defer m.callsMutex.Unlock()
-	*addr++
-	var newWaiting []waiting
-	for _, w := range m.waiting {
-		if m.calls.atLeast(w.expected) {
-			close(w.done)
-			continue
-		}
-		newWaiting = append(newWaiting, w)
-	}
-	m.waiting = newWaiting
-}
-
-// Wait waits for at least the relevant calls before returning. The expected
-// Calls are always over the lifetime of the Mock. Values in the Calls struct
-// are used as the minimum number of calls, this allows you to wait for only
-// the calls you care about.
-func (m *Mock) Wait(s Calls) {
-	m.callsMutex.Lock()
-	if m.calls.atLeast(s) {
-		m.callsMutex.Unlock()
-		return
-	}
-	done := make(chan struct{})
-	m.waiting = append(m.waiting, waiting{expected: s, done: done})
-	m.callsMutex.Unlock()
-	<-done
-}
-
-// clockTimer represents an object with an associated start time.
-type clockTimer interface {
-	Next() time.Time
-	Tick(time.Time)
-}
-
-// clockTimers represents a list of sortable timers.
-type clockTimers []clockTimer
-
-func (a clockTimers) Len() int           { return len(a) }
-func (a clockTimers) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
-func (a clockTimers) Less(i, j int) bool { return a[i].Next().Before(a[j].Next()) }
-
-// Timer represents a single event.
-// The current time will be sent on C, unless the timer was created by AfterFunc.
-type Timer struct {
-	C     <-chan time.Time
-	c     chan time.Time
-	timer *time.Timer // realtime impl, if set
-	next  time.Time   // next tick time
-	mock  *Mock       // mock clock, if set
-	fn    func()      // AfterFunc function, if set
-}
-
-// Stop turns off the ticker.
-func (t *Timer) Stop() {
-	if t.timer != nil {
-		t.timer.Stop()
-	} else {
-		t.mock.removeClockTimer((*internalTimer)(t))
-	}
-}
-
-type internalTimer Timer
-
-func (t *internalTimer) Next() time.Time { return t.next }
-func (t *internalTimer) Tick(now time.Time) {
-	if t.fn != nil {
-		t.fn()
-	} else {
-		t.c <- now
-	}
-	t.mock.removeClockTimer((*internalTimer)(t))
-	gosched()
-}
-
-// Ticker holds a channel that receives "ticks" at regular intervals.
-type Ticker struct {
-	C      <-chan time.Time
-	c      chan time.Time
-	ticker *time.Ticker  // realtime impl, if set
-	next   time.Time     // next tick time
-	mock   *Mock         // mock clock, if set
-	d      time.Duration // time between ticks
-}
-
-// Stop turns off the ticker.
-func (t *Ticker) Stop() {
-	if t.ticker != nil {
-		t.ticker.Stop()
-	} else {
-		t.mock.removeClockTimer((*internalTicker)(t))
-	}
-}
-
-type internalTicker Ticker
-
-func (t *internalTicker) Next() time.Time { return t.next }
-func (t *internalTicker) Tick(now time.Time) {
-	select {
-	case t.c <- now:
-	case <-time.After(1 * time.Millisecond):
-	}
-	t.next = now.Add(t.d)
-	gosched()
-}
-
-// Sleep momentarily so that other goroutines can process.
-func gosched() { runtime.Gosched() }
-
-// Calls keeps track of the count of calls for each of the methods on the Clock
-// interface.
-type Calls struct {
-	After     uint32
-	AfterFunc uint32
-	Now       uint32
-	Sleep     uint32
-	Tick      uint32
-	Ticker    uint32
-	Timer     uint32
-}
-
-// atLeast returns true if at least the number of calls in o have been made.
-func (c Calls) atLeast(o Calls) bool {
-	if c.After < o.After {
-		return false
-	}
-	if c.AfterFunc < o.AfterFunc {
-		return false
-	}
-	if c.Now < o.Now {
-		return false
-	}
-	if c.Sleep < o.Sleep {
-		return false
-	}
-	if c.Tick < o.Tick {
-		return false
-	}
-	if c.Ticker < o.Ticker {
-		return false
-	}
-	if c.Timer < o.Timer {
-		return false
-	}
-	return true
-}
-
-type waiting struct {
-	expected Calls
-	done     chan struct{}
-}

vendor/github.com/minio/redigo/LICENSE

@@ -0,0 +1,175 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.

vendor/github.com/minio/redigo/redis/commandinfo.go

@@ -0,0 +1,54 @@
+// Copyright 2014 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import (
+	"strings"
+)
+
+const (
+	WatchState = 1 << iota
+	MultiState
+	SubscribeState
+	MonitorState
+)
+
+type CommandInfo struct {
+	Set, Clear int
+}
+
+var commandInfos = map[string]CommandInfo{
+	"WATCH":      {Set: WatchState},
+	"UNWATCH":    {Clear: WatchState},
+	"MULTI":      {Set: MultiState},
+	"EXEC":       {Clear: WatchState | MultiState},
+	"DISCARD":    {Clear: WatchState | MultiState},
+	"PSUBSCRIBE": {Set: SubscribeState},
+	"SUBSCRIBE":  {Set: SubscribeState},
+	"MONITOR":    {Set: MonitorState},
+}
+
+func init() {
+	for n, ci := range commandInfos {
+		commandInfos[strings.ToLower(n)] = ci
+	}
+}
+
+func LookupCommandInfo(commandName string) CommandInfo {
+	if ci, ok := commandInfos[commandName]; ok {
+		return ci
+	}
+	return commandInfos[strings.ToUpper(commandName)]
+}

vendor/github.com/minio/redigo/redis/conn.go

@@ -0,0 +1,570 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/url"
+	"regexp"
+	"strconv"
+	"sync"
+	"time"
+)
+
+// conn is the low-level implementation of Conn
+type conn struct {
+
+	// Shared
+	mu      sync.Mutex
+	pending int
+	err     error
+	conn    net.Conn
+
+	// Read
+	readTimeout time.Duration
+	br          *bufio.Reader
+
+	// Write
+	writeTimeout time.Duration
+	bw           *bufio.Writer
+
+	// Scratch space for formatting argument length.
+	// '*' or '$', length, "\r\n"
+	lenScratch [32]byte
+
+	// Scratch space for formatting integers and floats.
+	numScratch [40]byte
+}
+
+// DialTimeout acts like Dial but takes timeouts for establishing the
+// connection to the server, writing a command and reading a reply.
+//
+// Deprecated: Use Dial with options instead.
+func DialTimeout(network, address string, connectTimeout, readTimeout, writeTimeout time.Duration) (Conn, error) {
+	return Dial(network, address,
+		DialConnectTimeout(connectTimeout),
+		DialReadTimeout(readTimeout),
+		DialWriteTimeout(writeTimeout))
+}
+
+// DialOption specifies an option for dialing a Redis server.
+type DialOption struct {
+	f func(*dialOptions)
+}
+
+type dialOptions struct {
+	readTimeout  time.Duration
+	writeTimeout time.Duration
+	dial         func(network, addr string) (net.Conn, error)
+	db           int
+	password     string
+}
+
+// DialReadTimeout specifies the timeout for reading a single command reply.
+func DialReadTimeout(d time.Duration) DialOption {
+	return DialOption{func(do *dialOptions) {
+		do.readTimeout = d
+	}}
+}
+
+// DialWriteTimeout specifies the timeout for writing a single command.
+func DialWriteTimeout(d time.Duration) DialOption {
+	return DialOption{func(do *dialOptions) {
+		do.writeTimeout = d
+	}}
+}
+
+// DialConnectTimeout specifies the timeout for connecting to the Redis server.
+func DialConnectTimeout(d time.Duration) DialOption {
+	return DialOption{func(do *dialOptions) {
+		dialer := net.Dialer{Timeout: d}
+		do.dial = dialer.Dial
+	}}
+}
+
+// DialNetDial specifies a custom dial function for creating TCP
+// connections. If this option is left out, then net.Dial is
+// used. DialNetDial overrides DialConnectTimeout.
+func DialNetDial(dial func(network, addr string) (net.Conn, error)) DialOption {
+	return DialOption{func(do *dialOptions) {
+		do.dial = dial
+	}}
+}
+
+// DialDatabase specifies the database to select when dialing a connection.
+func DialDatabase(db int) DialOption {
+	return DialOption{func(do *dialOptions) {
+		do.db = db
+	}}
+}
+
+// DialPassword specifies the password to use when connecting to
+// the Redis server.
+func DialPassword(password string) DialOption {
+	return DialOption{func(do *dialOptions) {
+		do.password = password
+	}}
+}
+
+// Dial connects to the Redis server at the given network and
+// address using the specified options.
+func Dial(network, address string, options ...DialOption) (Conn, error) {
+	do := dialOptions{
+		dial: net.Dial,
+	}
+	for _, option := range options {
+		option.f(&do)
+	}
+
+	netConn, err := do.dial(network, address)
+	if err != nil {
+		return nil, err
+	}
+	c := &conn{
+		conn:         netConn,
+		bw:           bufio.NewWriter(netConn),
+		br:           bufio.NewReader(netConn),
+		readTimeout:  do.readTimeout,
+		writeTimeout: do.writeTimeout,
+	}
+
+	if do.password != "" {
+		if _, err := c.Do("AUTH", do.password); err != nil {
+			netConn.Close()
+			return nil, err
+		}
+	}
+
+	if do.db != 0 {
+		if _, err := c.Do("SELECT", do.db); err != nil {
+			netConn.Close()
+			return nil, err
+		}
+	}
+
+	return c, nil
+}
+
+var pathDBRegexp = regexp.MustCompile(`/(\d*)\z`)
+
+// DialURL connects to a Redis server at the given URL using the Redis
+// URI scheme. URLs should follow the draft IANA specification for the
+// scheme (https://www.iana.org/assignments/uri-schemes/prov/redis).
+func DialURL(rawurl string, options ...DialOption) (Conn, error) {
+	u, err := url.Parse(rawurl)
+	if err != nil {
+		return nil, err
+	}
+
+	if u.Scheme != "redis" {
+		return nil, fmt.Errorf("invalid redis URL scheme: %s", u.Scheme)
+	}
+
+	// As per the IANA draft spec, the host defaults to localhost and
+	// the port defaults to 6379.
+	host, port, err := net.SplitHostPort(u.Host)
+	if err != nil {
+		// assume port is missing
+		host = u.Host
+		port = "6379"
+	}
+	if host == "" {
+		host = "localhost"
+	}
+	address := net.JoinHostPort(host, port)
+
+	if u.User != nil {
+		password, isSet := u.User.Password()
+		if isSet {
+			options = append(options, DialPassword(password))
+		}
+	}
+
+	match := pathDBRegexp.FindStringSubmatch(u.Path)
+	if len(match) == 2 {
+		db := 0
+		if len(match[1]) > 0 {
+			db, err = strconv.Atoi(match[1])
+			if err != nil {
+				return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
+			}
+		}
+		if db != 0 {
+			options = append(options, DialDatabase(db))
+		}
+	} else if u.Path != "" {
+		return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
+	}
+
+	return Dial("tcp", address, options...)
+}
+
+// NewConn returns a new Redigo connection for the given net connection.
+func NewConn(netConn net.Conn, readTimeout, writeTimeout time.Duration) Conn {
+	return &conn{
+		conn:         netConn,
+		bw:           bufio.NewWriter(netConn),
+		br:           bufio.NewReader(netConn),
+		readTimeout:  readTimeout,
+		writeTimeout: writeTimeout,
+	}
+}
+
+func (c *conn) Close() error {
+	c.mu.Lock()
+	err := c.err
+	if c.err == nil {
+		c.err = errors.New("redigo: closed")
+		err = c.conn.Close()
+	}
+	c.mu.Unlock()
+	return err
+}
+
+func (c *conn) fatal(err error) error {
+	c.mu.Lock()
+	if c.err == nil {
+		c.err = err
+		// Close connection to force errors on subsequent calls and to unblock
+		// other reader or writer.
+		c.conn.Close()
+	}
+	c.mu.Unlock()
+	return err
+}
+
+func (c *conn) Err() error {
+	c.mu.Lock()
+	err := c.err
+	c.mu.Unlock()
+	return err
+}
+
+func (c *conn) writeLen(prefix byte, n int) error {
+	c.lenScratch[len(c.lenScratch)-1] = '\n'
+	c.lenScratch[len(c.lenScratch)-2] = '\r'
+	i := len(c.lenScratch) - 3
+	for {
+		c.lenScratch[i] = byte('0' + n%10)
+		i -= 1
+		n = n / 10
+		if n == 0 {
+			break
+		}
+	}
+	c.lenScratch[i] = prefix
+	_, err := c.bw.Write(c.lenScratch[i:])
+	return err
+}
+
+func (c *conn) writeString(s string) error {
+	c.writeLen('$', len(s))
+	c.bw.WriteString(s)
+	_, err := c.bw.WriteString("\r\n")
+	return err
+}
+
+func (c *conn) writeBytes(p []byte) error {
+	c.writeLen('$', len(p))
+	c.bw.Write(p)
+	_, err := c.bw.WriteString("\r\n")
+	return err
+}
+
+func (c *conn) writeInt64(n int64) error {
+	return c.writeBytes(strconv.AppendInt(c.numScratch[:0], n, 10))
+}
+
+func (c *conn) writeFloat64(n float64) error {
+	return c.writeBytes(strconv.AppendFloat(c.numScratch[:0], n, 'g', -1, 64))
+}
+
+func (c *conn) writeCommand(cmd string, args []interface{}) (err error) {
+	c.writeLen('*', 1+len(args))
+	err = c.writeString(cmd)
+	for _, arg := range args {
+		if err != nil {
+			break
+		}
+		switch arg := arg.(type) {
+		case string:
+			err = c.writeString(arg)
+		case []byte:
+			err = c.writeBytes(arg)
+		case int:
+			err = c.writeInt64(int64(arg))
+		case int64:
+			err = c.writeInt64(arg)
+		case float64:
+			err = c.writeFloat64(arg)
+		case bool:
+			if arg {
+				err = c.writeString("1")
+			} else {
+				err = c.writeString("0")
+			}
+		case nil:
+			err = c.writeString("")
+		default:
+			var buf bytes.Buffer
+			fmt.Fprint(&buf, arg)
+			err = c.writeBytes(buf.Bytes())
+		}
+	}
+	return err
+}
+
+type protocolError string
+
+func (pe protocolError) Error() string {
+	return fmt.Sprintf("redigo: %s (possible server error or unsupported concurrent read by application)", string(pe))
+}
+
+func (c *conn) readLine() ([]byte, error) {
+	p, err := c.br.ReadSlice('\n')
+	if err == bufio.ErrBufferFull {
+		return nil, protocolError("long response line")
+	}
+	if err != nil {
+		return nil, err
+	}
+	i := len(p) - 2
+	if i < 0 || p[i] != '\r' {
+		return nil, protocolError("bad response line terminator")
+	}
+	return p[:i], nil
+}
+
+// parseLen parses bulk string and array lengths.
+func parseLen(p []byte) (int, error) {
+	if len(p) == 0 {
+		return -1, protocolError("malformed length")
+	}
+
+	if p[0] == '-' && len(p) == 2 && p[1] == '1' {
+		// handle $-1 and $-1 null replies.
+		return -1, nil
+	}
+
+	var n int
+	for _, b := range p {
+		n *= 10
+		if b < '0' || b > '9' {
+			return -1, protocolError("illegal bytes in length")
+		}
+		n += int(b - '0')
+	}
+
+	return n, nil
+}
+
+// parseInt parses an integer reply.
+func parseInt(p []byte) (interface{}, error) {
+	if len(p) == 0 {
+		return 0, protocolError("malformed integer")
+	}
+
+	var negate bool
+	if p[0] == '-' {
+		negate = true
+		p = p[1:]
+		if len(p) == 0 {
+			return 0, protocolError("malformed integer")
+		}
+	}
+
+	var n int64
+	for _, b := range p {
+		n *= 10
+		if b < '0' || b > '9' {
+			return 0, protocolError("illegal bytes in length")
+		}
+		n += int64(b - '0')
+	}
+
+	if negate {
+		n = -n
+	}
+	return n, nil
+}
+
+var (
+	okReply   interface{} = "OK"
+	pongReply interface{} = "PONG"
+)
+
+func (c *conn) readReply() (interface{}, error) {
+	line, err := c.readLine()
+	if err != nil {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, protocolError("short response line")
+	}
+	switch line[0] {
+	case '+':
+		switch {
+		case len(line) == 3 && line[1] == 'O' && line[2] == 'K':
+			// Avoid allocation for frequent "+OK" response.
+			return okReply, nil
+		case len(line) == 5 && line[1] == 'P' && line[2] == 'O' && line[3] == 'N' && line[4] == 'G':
+			// Avoid allocation in PING command benchmarks :)
+			return pongReply, nil
+		default:
+			return string(line[1:]), nil
+		}
+	case '-':
+		return Error(string(line[1:])), nil
+	case ':':
+		return parseInt(line[1:])
+	case '$':
+		n, err := parseLen(line[1:])
+		if n < 0 || err != nil {
+			return nil, err
+		}
+		p := make([]byte, n)
+		_, err = io.ReadFull(c.br, p)
+		if err != nil {
+			return nil, err
+		}
+		if line, err := c.readLine(); err != nil {
+			return nil, err
+		} else if len(line) != 0 {
+			return nil, protocolError("bad bulk string format")
+		}
+		return p, nil
+	case '*':
+		n, err := parseLen(line[1:])
+		if n < 0 || err != nil {
+			return nil, err
+		}
+		r := make([]interface{}, n)
+		for i := range r {
+			r[i], err = c.readReply()
+			if err != nil {
+				return nil, err
+			}
+		}
+		return r, nil
+	}
+	return nil, protocolError("unexpected response line")
+}
+
+func (c *conn) Send(cmd string, args ...interface{}) error {
+	c.mu.Lock()
+	c.pending += 1
+	c.mu.Unlock()
+	if c.writeTimeout != 0 {
+		c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
+	}
+	if err := c.writeCommand(cmd, args); err != nil {
+		return c.fatal(err)
+	}
+	return nil
+}
+
+func (c *conn) Flush() error {
+	if c.writeTimeout != 0 {
+		c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
+	}
+	if err := c.bw.Flush(); err != nil {
+		return c.fatal(err)
+	}
+	return nil
+}
+
+func (c *conn) Receive() (reply interface{}, err error) {
+	if c.readTimeout != 0 {
+		c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
+	}
+	if reply, err = c.readReply(); err != nil {
+		return nil, c.fatal(err)
+	}
+	// When using pub/sub, the number of receives can be greater than the
+	// number of sends. To enable normal use of the connection after
+	// unsubscribing from all channels, we do not decrement pending to a
+	// negative value.
+	//
+	// The pending field is decremented after the reply is read to handle the
+	// case where Receive is called before Send.
+	c.mu.Lock()
+	if c.pending > 0 {
+		c.pending -= 1
+	}
+	c.mu.Unlock()
+	if err, ok := reply.(Error); ok {
+		return nil, err
+	}
+	return
+}
+
+func (c *conn) Do(cmd string, args ...interface{}) (interface{}, error) {
+	c.mu.Lock()
+	pending := c.pending
+	c.pending = 0
+	c.mu.Unlock()
+
+	if cmd == "" && pending == 0 {
+		return nil, nil
+	}
+
+	if c.writeTimeout != 0 {
+		c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
+	}
+
+	if cmd != "" {
+		if err := c.writeCommand(cmd, args); err != nil {
+			return nil, c.fatal(err)
+		}
+	}
+
+	if err := c.bw.Flush(); err != nil {
+		return nil, c.fatal(err)
+	}
+
+	if c.readTimeout != 0 {
+		c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
+	}
+
+	if cmd == "" {
+		reply := make([]interface{}, pending)
+		for i := range reply {
+			r, e := c.readReply()
+			if e != nil {
+				return nil, c.fatal(e)
+			}
+			reply[i] = r
+		}
+		return reply, nil
+	}
+
+	var err error
+	var reply interface{}
+	for i := 0; i <= pending; i++ {
+		var e error
+		if reply, e = c.readReply(); e != nil {
+			return nil, c.fatal(e)
+		}
+		if e, ok := reply.(Error); ok && err == nil {
+			err = e
+		}
+	}
+	return reply, err
+}

vendor/github.com/minio/redigo/redis/doc.go

@@ -0,0 +1,168 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+// Package redis is a client for the Redis database.
+//
+// The Redigo FAQ (https://github.com/minio/redigo/wiki/FAQ) contains more
+// documentation about this package.
+//
+// Connections
+//
+// The Conn interface is the primary interface for working with Redis.
+// Applications create connections by calling the Dial, DialWithTimeout or
+// NewConn functions. In the future, functions will be added for creating
+// sharded and other types of connections.
+//
+// The application must call the connection Close method when the application
+// is done with the connection.
+//
+// Executing Commands
+//
+// The Conn interface has a generic method for executing Redis commands:
+//
+//  Do(commandName string, args ...interface{}) (reply interface{}, err error)
+//
+// The Redis command reference (http://redis.io/commands) lists the available
+// commands. An example of using the Redis APPEND command is:
+//
+//  n, err := conn.Do("APPEND", "key", "value")
+//
+// The Do method converts command arguments to binary strings for transmission
+// to the server as follows:
+//
+//  Go Type                 Conversion
+//  []byte                  Sent as is
+//  string                  Sent as is
+//  int, int64              strconv.FormatInt(v)
+//  float64                 strconv.FormatFloat(v, 'g', -1, 64)
+//  bool                    true -> "1", false -> "0"
+//  nil                     ""
+//  all other types         fmt.Print(v)
+//
+// Redis command reply types are represented using the following Go types:
+//
+//  Redis type              Go type
+//  error                   redis.Error
+//  integer                 int64
+//  simple string           string
+//  bulk string             []byte or nil if value not present.
+//  array                   []interface{} or nil if value not present.
+//
+// Use type assertions or the reply helper functions to convert from
+// interface{} to the specific Go type for the command result.
+//
+// Pipelining
+//
+// Connections support pipelining using the Send, Flush and Receive methods.
+//
+//  Send(commandName string, args ...interface{}) error
+//  Flush() error
+//  Receive() (reply interface{}, err error)
+//
+// Send writes the command to the connection's output buffer. Flush flushes the
+// connection's output buffer to the server. Receive reads a single reply from
+// the server. The following example shows a simple pipeline.
+//
+//  c.Send("SET", "foo", "bar")
+//  c.Send("GET", "foo")
+//  c.Flush()
+//  c.Receive() // reply from SET
+//  v, err = c.Receive() // reply from GET
+//
+// The Do method combines the functionality of the Send, Flush and Receive
+// methods. The Do method starts by writing the command and flushing the output
+// buffer. Next, the Do method receives all pending replies including the reply
+// for the command just sent by Do. If any of the received replies is an error,
+// then Do returns the error. If there are no errors, then Do returns the last
+// reply. If the command argument to the Do method is "", then the Do method
+// will flush the output buffer and receive pending replies without sending a
+// command.
+//
+// Use the Send and Do methods to implement pipelined transactions.
+//
+//  c.Send("MULTI")
+//  c.Send("INCR", "foo")
+//  c.Send("INCR", "bar")
+//  r, err := c.Do("EXEC")
+//  fmt.Println(r) // prints [1, 1]
+//
+// Concurrency
+//
+// Connections support one concurrent caller to the Recieve method and one
+// concurrent caller to the Send and Flush methods. No other concurrency is
+// supported including concurrent calls to the Do method.
+//
+// For full concurrent access to Redis, use the thread-safe Pool to get, use
+// and release a connection from within a goroutine. Connections returned from
+// a Pool have the concurrency restrictions described in the previous
+// paragraph.
+//
+// Publish and Subscribe
+//
+// Use the Send, Flush and Receive methods to implement Pub/Sub subscribers.
+//
+//  c.Send("SUBSCRIBE", "example")
+//  c.Flush()
+//  for {
+//      reply, err := c.Receive()
+//      if err != nil {
+//          return err
+//      }
+//      // process pushed message
+//  }
+//
+// The PubSubConn type wraps a Conn with convenience methods for implementing
+// subscribers. The Subscribe, PSubscribe, Unsubscribe and PUnsubscribe methods
+// send and flush a subscription management command. The receive method
+// converts a pushed message to convenient types for use in a type switch.
+//
+//  psc := redis.PubSubConn{c}
+//  psc.Subscribe("example")
+//  for {
+//      switch v := psc.Receive().(type) {
+//      case redis.Message:
+//          fmt.Printf("%s: message: %s\n", v.Channel, v.Data)
+//      case redis.Subscription:
+//          fmt.Printf("%s: %s %d\n", v.Channel, v.Kind, v.Count)
+//      case error:
+//          return v
+//      }
+//  }
+//
+// Reply Helpers
+//
+// The Bool, Int, Bytes, String, Strings and Values functions convert a reply
+// to a value of a specific type. To allow convenient wrapping of calls to the
+// connection Do and Receive methods, the functions take a second argument of
+// type error.  If the error is non-nil, then the helper function returns the
+// error. If the error is nil, the function converts the reply to the specified
+// type:
+//
+//  exists, err := redis.Bool(c.Do("EXISTS", "foo"))
+//  if err != nil {
+//      // handle error return from c.Do or type conversion error.
+//  }
+//
+// The Scan function converts elements of a array reply to Go types:
+//
+//  var value1 int
+//  var value2 string
+//  reply, err := redis.Values(c.Do("MGET", "key1", "key2"))
+//  if err != nil {
+//      // handle error
+//  }
+//   if _, err := redis.Scan(reply, &value1, &value2); err != nil {
+//      // handle error
+//  }
+package redis // import "github.com/minio/redigo/redis"

vendor/github.com/minio/redigo/redis/log.go

@@ -0,0 +1,117 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+)
+
+// NewLoggingConn returns a logging wrapper around a connection.
+func NewLoggingConn(conn Conn, logger *log.Logger, prefix string) Conn {
+	if prefix != "" {
+		prefix = prefix + "."
+	}
+	return &loggingConn{conn, logger, prefix}
+}
+
+type loggingConn struct {
+	Conn
+	logger *log.Logger
+	prefix string
+}
+
+func (c *loggingConn) Close() error {
+	err := c.Conn.Close()
+	var buf bytes.Buffer
+	fmt.Fprintf(&buf, "%sClose() -> (%v)", c.prefix, err)
+	c.logger.Output(2, buf.String())
+	return err
+}
+
+func (c *loggingConn) printValue(buf *bytes.Buffer, v interface{}) {
+	const chop = 32
+	switch v := v.(type) {
+	case []byte:
+		if len(v) > chop {
+			fmt.Fprintf(buf, "%q...", v[:chop])
+		} else {
+			fmt.Fprintf(buf, "%q", v)
+		}
+	case string:
+		if len(v) > chop {
+			fmt.Fprintf(buf, "%q...", v[:chop])
+		} else {
+			fmt.Fprintf(buf, "%q", v)
+		}
+	case []interface{}:
+		if len(v) == 0 {
+			buf.WriteString("[]")
+		} else {
+			sep := "["
+			fin := "]"
+			if len(v) > chop {
+				v = v[:chop]
+				fin = "...]"
+			}
+			for _, vv := range v {
+				buf.WriteString(sep)
+				c.printValue(buf, vv)
+				sep = ", "
+			}
+			buf.WriteString(fin)
+		}
+	default:
+		fmt.Fprint(buf, v)
+	}
+}
+
+func (c *loggingConn) print(method, commandName string, args []interface{}, reply interface{}, err error) {
+	var buf bytes.Buffer
+	fmt.Fprintf(&buf, "%s%s(", c.prefix, method)
+	if method != "Receive" {
+		buf.WriteString(commandName)
+		for _, arg := range args {
+			buf.WriteString(", ")
+			c.printValue(&buf, arg)
+		}
+	}
+	buf.WriteString(") -> (")
+	if method != "Send" {
+		c.printValue(&buf, reply)
+		buf.WriteString(", ")
+	}
+	fmt.Fprintf(&buf, "%v)", err)
+	c.logger.Output(3, buf.String())
+}
+
+func (c *loggingConn) Do(commandName string, args ...interface{}) (interface{}, error) {
+	reply, err := c.Conn.Do(commandName, args...)
+	c.print("Do", commandName, args, reply, err)
+	return reply, err
+}
+
+func (c *loggingConn) Send(commandName string, args ...interface{}) error {
+	err := c.Conn.Send(commandName, args...)
+	c.print("Send", commandName, args, nil, err)
+	return err
+}
+
+func (c *loggingConn) Receive() (interface{}, error) {
+	reply, err := c.Conn.Receive()
+	c.print("Receive", "", nil, reply, err)
+	return reply, err
+}

vendor/github.com/minio/redigo/redis/pool.go

@@ -0,0 +1,391 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import (
+	"bytes"
+	"container/list"
+	"crypto/rand"
+	"crypto/sha1"
+	"errors"
+	"io"
+	"strconv"
+	"sync"
+	"time"
+)
+
+var nowFunc = time.Now // for testing
+
+// ErrPoolExhausted is returned from a pool connection method (Do, Send,
+// Receive, Flush, Err) when the maximum number of database connections in the
+// pool has been reached.
+var ErrPoolExhausted = errors.New("redigo: connection pool exhausted")
+
+var (
+	errPoolClosed = errors.New("redigo: connection pool closed")
+	errConnClosed = errors.New("redigo: connection closed")
+)
+
+// Pool maintains a pool of connections. The application calls the Get method
+// to get a connection from the pool and the connection's Close method to
+// return the connection's resources to the pool.
+//
+// The following example shows how to use a pool in a web application. The
+// application creates a pool at application startup and makes it available to
+// request handlers using a global variable.
+//
+//  func newPool(server, password string) *redis.Pool {
+//      return &redis.Pool{
+//          MaxIdle: 3,
+//          IdleTimeout: 240 * time.Second,
+//          Dial: func () (redis.Conn, error) {
+//              c, err := redis.Dial("tcp", server)
+//              if err != nil {
+//                  return nil, err
+//              }
+//              if _, err := c.Do("AUTH", password); err != nil {
+//                  c.Close()
+//                  return nil, err
+//              }
+//              return c, err
+//          },
+//          TestOnBorrow: func(c redis.Conn, t time.Time) error {
+//              _, err := c.Do("PING")
+//              return err
+//          },
+//      }
+//  }
+//
+//  var (
+//      pool *redis.Pool
+//      redisServer = flag.String("redisServer", ":6379", "")
+//      redisPassword = flag.String("redisPassword", "", "")
+//  )
+//
+//  func main() {
+//      flag.Parse()
+//      pool = newPool(*redisServer, *redisPassword)
+//      ...
+//  }
+//
+// A request handler gets a connection from the pool and closes the connection
+// when the handler is done:
+//
+//  func serveHome(w http.ResponseWriter, r *http.Request) {
+//      conn := pool.Get()
+//      defer conn.Close()
+//      ....
+//  }
+//
+type Pool struct {
+
+	// Dial is an application supplied function for creating and configuring a
+	// connection.
+	//
+	// The connection returned from Dial must not be in a special state
+	// (subscribed to pubsub channel, transaction started, ...).
+	Dial func() (Conn, error)
+
+	// TestOnBorrow is an optional application supplied function for checking
+	// the health of an idle connection before the connection is used again by
+	// the application. Argument t is the time that the connection was returned
+	// to the pool. If the function returns an error, then the connection is
+	// closed.
+	TestOnBorrow func(c Conn, t time.Time) error
+
+	// Maximum number of idle connections in the pool.
+	MaxIdle int
+
+	// Maximum number of connections allocated by the pool at a given time.
+	// When zero, there is no limit on the number of connections in the pool.
+	MaxActive int
+
+	// Close connections after remaining idle for this duration. If the value
+	// is zero, then idle connections are not closed. Applications should set
+	// the timeout to a value less than the server's timeout.
+	IdleTimeout time.Duration
+
+	// If Wait is true and the pool is at the MaxActive limit, then Get() waits
+	// for a connection to be returned to the pool before returning.
+	Wait bool
+
+	// mu protects fields defined below.
+	mu     sync.Mutex
+	cond   *sync.Cond
+	closed bool
+	active int
+
+	// Stack of idleConn with most recently used at the front.
+	idle list.List
+}
+
+type idleConn struct {
+	c Conn
+	t time.Time
+}
+
+// NewPool creates a new pool.
+//
+// Deprecated: Initialize the Pool directory as shown in the example.
+func NewPool(newFn func() (Conn, error), maxIdle int) *Pool {
+	return &Pool{Dial: newFn, MaxIdle: maxIdle}
+}
+
+// Get gets a connection. The application must close the returned connection.
+// This method always returns a valid connection so that applications can defer
+// error handling to the first use of the connection. If there is an error
+// getting an underlying connection, then the connection Err, Do, Send, Flush
+// and Receive methods return that error.
+func (p *Pool) Get() Conn {
+	c, err := p.get()
+	if err != nil {
+		return errorConnection{err}
+	}
+	return &pooledConnection{p: p, c: c}
+}
+
+// ActiveCount returns the number of active connections in the pool.
+func (p *Pool) ActiveCount() int {
+	p.mu.Lock()
+	active := p.active
+	p.mu.Unlock()
+	return active
+}
+
+// Close releases the resources used by the pool.
+func (p *Pool) Close() error {
+	p.mu.Lock()
+	idle := p.idle
+	p.idle.Init()
+	p.closed = true
+	p.active -= idle.Len()
+	if p.cond != nil {
+		p.cond.Broadcast()
+	}
+	p.mu.Unlock()
+	for e := idle.Front(); e != nil; e = e.Next() {
+		e.Value.(idleConn).c.Close()
+	}
+	return nil
+}
+
+// release decrements the active count and signals waiters. The caller must
+// hold p.mu during the call.
+func (p *Pool) release() {
+	p.active -= 1
+	if p.cond != nil {
+		p.cond.Signal()
+	}
+}
+
+// get prunes stale connections and returns a connection from the idle list or
+// creates a new connection.
+func (p *Pool) get() (Conn, error) {
+	p.mu.Lock()
+
+	// Prune stale connections.
+
+	if timeout := p.IdleTimeout; timeout > 0 {
+		for i, n := 0, p.idle.Len(); i < n; i++ {
+			e := p.idle.Back()
+			if e == nil {
+				break
+			}
+			ic := e.Value.(idleConn)
+			if ic.t.Add(timeout).After(nowFunc()) {
+				break
+			}
+			p.idle.Remove(e)
+			p.release()
+			p.mu.Unlock()
+			ic.c.Close()
+			p.mu.Lock()
+		}
+	}
+
+	for {
+
+		// Get idle connection.
+
+		for i, n := 0, p.idle.Len(); i < n; i++ {
+			e := p.idle.Front()
+			if e == nil {
+				break
+			}
+			ic := e.Value.(idleConn)
+			p.idle.Remove(e)
+			test := p.TestOnBorrow
+			p.mu.Unlock()
+			if test == nil || test(ic.c, ic.t) == nil {
+				return ic.c, nil
+			}
+			ic.c.Close()
+			p.mu.Lock()
+			p.release()
+		}
+
+		// Check for pool closed before dialing a new connection.
+
+		if p.closed {
+			p.mu.Unlock()
+			return nil, errors.New("redigo: get on closed pool")
+		}
+
+		// Dial new connection if under limit.
+
+		if p.MaxActive == 0 || p.active < p.MaxActive {
+			dial := p.Dial
+			p.active += 1
+			p.mu.Unlock()
+			c, err := dial()
+			if err != nil {
+				p.mu.Lock()
+				p.release()
+				p.mu.Unlock()
+				c = nil
+			}
+			return c, err
+		}
+
+		if !p.Wait {
+			p.mu.Unlock()
+			return nil, ErrPoolExhausted
+		}
+
+		if p.cond == nil {
+			p.cond = sync.NewCond(&p.mu)
+		}
+		p.cond.Wait()
+	}
+}
+
+func (p *Pool) put(c Conn, forceClose bool) error {
+	err := c.Err()
+	p.mu.Lock()
+	if !p.closed && err == nil && !forceClose {
+		p.idle.PushFront(idleConn{t: nowFunc(), c: c})
+		if p.idle.Len() > p.MaxIdle {
+			c = p.idle.Remove(p.idle.Back()).(idleConn).c
+		} else {
+			c = nil
+		}
+	}
+
+	if c == nil {
+		if p.cond != nil {
+			p.cond.Signal()
+		}
+		p.mu.Unlock()
+		return nil
+	}
+
+	p.release()
+	p.mu.Unlock()
+	return c.Close()
+}
+
+type pooledConnection struct {
+	p     *Pool
+	c     Conn
+	state int
+}
+
+var (
+	sentinel     []byte
+	sentinelOnce sync.Once
+)
+
+func initSentinel() {
+	p := make([]byte, 64)
+	if _, err := rand.Read(p); err == nil {
+		sentinel = p
+	} else {
+		h := sha1.New()
+		io.WriteString(h, "Oops, rand failed. Use time instead.")
+		io.WriteString(h, strconv.FormatInt(time.Now().UnixNano(), 10))
+		sentinel = h.Sum(nil)
+	}
+}
+
+func (pc *pooledConnection) Close() error {
+	c := pc.c
+	if _, ok := c.(errorConnection); ok {
+		return nil
+	}
+	pc.c = errorConnection{errConnClosed}
+
+	if pc.state&MultiState != 0 {
+		c.Send("DISCARD")
+		pc.state &^= (MultiState | WatchState)
+	} else if pc.state&WatchState != 0 {
+		c.Send("UNWATCH")
+		pc.state &^= WatchState
+	}
+	if pc.state&SubscribeState != 0 {
+		c.Send("UNSUBSCRIBE")
+		c.Send("PUNSUBSCRIBE")
+		// To detect the end of the message stream, ask the server to echo
+		// a sentinel value and read until we see that value.
+		sentinelOnce.Do(initSentinel)
+		c.Send("ECHO", sentinel)
+		c.Flush()
+		for {
+			p, err := c.Receive()
+			if err != nil {
+				break
+			}
+			if p, ok := p.([]byte); ok && bytes.Equal(p, sentinel) {
+				pc.state &^= SubscribeState
+				break
+			}
+		}
+	}
+	c.Do("")
+	pc.p.put(c, pc.state != 0)
+	return nil
+}
+
+func (pc *pooledConnection) Err() error {
+	return pc.c.Err()
+}
+
+func (pc *pooledConnection) Do(commandName string, args ...interface{}) (reply interface{}, err error) {
+	ci := LookupCommandInfo(commandName)
+	pc.state = (pc.state | ci.Set) &^ ci.Clear
+	return pc.c.Do(commandName, args...)
+}
+
+func (pc *pooledConnection) Send(commandName string, args ...interface{}) error {
+	ci := LookupCommandInfo(commandName)
+	pc.state = (pc.state | ci.Set) &^ ci.Clear
+	return pc.c.Send(commandName, args...)
+}
+
+func (pc *pooledConnection) Flush() error {
+	return pc.c.Flush()
+}
+
+func (pc *pooledConnection) Receive() (reply interface{}, err error) {
+	return pc.c.Receive()
+}
+
+type errorConnection struct{ err error }
+
+func (ec errorConnection) Do(string, ...interface{}) (interface{}, error) { return nil, ec.err }
+func (ec errorConnection) Send(string, ...interface{}) error              { return ec.err }
+func (ec errorConnection) Err() error                                     { return ec.err }
+func (ec errorConnection) Close() error                                   { return ec.err }
+func (ec errorConnection) Flush() error                                   { return ec.err }
+func (ec errorConnection) Receive() (interface{}, error)                  { return nil, ec.err }

vendor/github.com/minio/redigo/redis/pubsub.go

@@ -0,0 +1,144 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import "errors"
+
+// Subscription represents a subscribe or unsubscribe notification.
+type Subscription struct {
+
+	// Kind is "subscribe", "unsubscribe", "psubscribe" or "punsubscribe"
+	Kind string
+
+	// The channel that was changed.
+	Channel string
+
+	// The current number of subscriptions for connection.
+	Count int
+}
+
+// Message represents a message notification.
+type Message struct {
+
+	// The originating channel.
+	Channel string
+
+	// The message data.
+	Data []byte
+}
+
+// PMessage represents a pmessage notification.
+type PMessage struct {
+
+	// The matched pattern.
+	Pattern string
+
+	// The originating channel.
+	Channel string
+
+	// The message data.
+	Data []byte
+}
+
+// Pong represents a pubsub pong notification.
+type Pong struct {
+	Data string
+}
+
+// PubSubConn wraps a Conn with convenience methods for subscribers.
+type PubSubConn struct {
+	Conn Conn
+}
+
+// Close closes the connection.
+func (c PubSubConn) Close() error {
+	return c.Conn.Close()
+}
+
+// Subscribe subscribes the connection to the specified channels.
+func (c PubSubConn) Subscribe(channel ...interface{}) error {
+	c.Conn.Send("SUBSCRIBE", channel...)
+	return c.Conn.Flush()
+}
+
+// PSubscribe subscribes the connection to the given patterns.
+func (c PubSubConn) PSubscribe(channel ...interface{}) error {
+	c.Conn.Send("PSUBSCRIBE", channel...)
+	return c.Conn.Flush()
+}
+
+// Unsubscribe unsubscribes the connection from the given channels, or from all
+// of them if none is given.
+func (c PubSubConn) Unsubscribe(channel ...interface{}) error {
+	c.Conn.Send("UNSUBSCRIBE", channel...)
+	return c.Conn.Flush()
+}
+
+// PUnsubscribe unsubscribes the connection from the given patterns, or from all
+// of them if none is given.
+func (c PubSubConn) PUnsubscribe(channel ...interface{}) error {
+	c.Conn.Send("PUNSUBSCRIBE", channel...)
+	return c.Conn.Flush()
+}
+
+// Ping sends a PING to the server with the specified data.
+func (c PubSubConn) Ping(data string) error {
+	c.Conn.Send("PING", data)
+	return c.Conn.Flush()
+}
+
+// Receive returns a pushed message as a Subscription, Message, PMessage, Pong
+// or error. The return value is intended to be used directly in a type switch
+// as illustrated in the PubSubConn example.
+func (c PubSubConn) Receive() interface{} {
+	reply, err := Values(c.Conn.Receive())
+	if err != nil {
+		return err
+	}
+
+	var kind string
+	reply, err = Scan(reply, &kind)
+	if err != nil {
+		return err
+	}
+
+	switch kind {
+	case "message":
+		var m Message
+		if _, err := Scan(reply, &m.Channel, &m.Data); err != nil {
+			return err
+		}
+		return m
+	case "pmessage":
+		var pm PMessage
+		if _, err := Scan(reply, &pm.Pattern, &pm.Channel, &pm.Data); err != nil {
+			return err
+		}
+		return pm
+	case "subscribe", "psubscribe", "unsubscribe", "punsubscribe":
+		s := Subscription{Kind: kind}
+		if _, err := Scan(reply, &s.Channel, &s.Count); err != nil {
+			return err
+		}
+		return s
+	case "pong":
+		var p Pong
+		if _, err := Scan(reply, &p.Data); err != nil {
+			return err
+		}
+		return p
+	}
+	return errors.New("redigo: unknown pubsub notification")
+}

vendor/github.com/minio/redigo/redis/redis.go

@@ -0,0 +1,44 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+// Error represents an error returned in a command reply.
+type Error string
+
+func (err Error) Error() string { return string(err) }
+
+// Conn represents a connection to a Redis server.
+type Conn interface {
+	// Close closes the connection.
+	Close() error
+
+	// Err returns a non-nil value if the connection is broken. The returned
+	// value is either the first non-nil value returned from the underlying
+	// network connection or a protocol parsing error. Applications should
+	// close broken connections.
+	Err() error
+
+	// Do sends a command to the server and returns the received reply.
+	Do(commandName string, args ...interface{}) (reply interface{}, err error)
+
+	// Send writes the command to the client's output buffer.
+	Send(commandName string, args ...interface{}) error
+
+	// Flush flushes the output buffer to the Redis server.
+	Flush() error
+
+	// Receive receives a single reply from the Redis server
+	Receive() (reply interface{}, err error)
+}

vendor/github.com/minio/redigo/redis/reply.go

@@ -0,0 +1,393 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+)
+
+// ErrNil indicates that a reply value is nil.
+var ErrNil = errors.New("redigo: nil returned")
+
+// Int is a helper that converts a command reply to an integer. If err is not
+// equal to nil, then Int returns 0, err. Otherwise, Int converts the
+// reply to an int as follows:
+//
+//  Reply type    Result
+//  integer       int(reply), nil
+//  bulk string   parsed reply, nil
+//  nil           0, ErrNil
+//  other         0, error
+func Int(reply interface{}, err error) (int, error) {
+	if err != nil {
+		return 0, err
+	}
+	switch reply := reply.(type) {
+	case int64:
+		x := int(reply)
+		if int64(x) != reply {
+			return 0, strconv.ErrRange
+		}
+		return x, nil
+	case []byte:
+		n, err := strconv.ParseInt(string(reply), 10, 0)
+		return int(n), err
+	case nil:
+		return 0, ErrNil
+	case Error:
+		return 0, reply
+	}
+	return 0, fmt.Errorf("redigo: unexpected type for Int, got type %T", reply)
+}
+
+// Int64 is a helper that converts a command reply to 64 bit integer. If err is
+// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
+// reply to an int64 as follows:
+//
+//  Reply type    Result
+//  integer       reply, nil
+//  bulk string   parsed reply, nil
+//  nil           0, ErrNil
+//  other         0, error
+func Int64(reply interface{}, err error) (int64, error) {
+	if err != nil {
+		return 0, err
+	}
+	switch reply := reply.(type) {
+	case int64:
+		return reply, nil
+	case []byte:
+		n, err := strconv.ParseInt(string(reply), 10, 64)
+		return n, err
+	case nil:
+		return 0, ErrNil
+	case Error:
+		return 0, reply
+	}
+	return 0, fmt.Errorf("redigo: unexpected type for Int64, got type %T", reply)
+}
+
+var errNegativeInt = errors.New("redigo: unexpected value for Uint64")
+
+// Uint64 is a helper that converts a command reply to 64 bit integer. If err is
+// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
+// reply to an int64 as follows:
+//
+//  Reply type    Result
+//  integer       reply, nil
+//  bulk string   parsed reply, nil
+//  nil           0, ErrNil
+//  other         0, error
+func Uint64(reply interface{}, err error) (uint64, error) {
+	if err != nil {
+		return 0, err
+	}
+	switch reply := reply.(type) {
+	case int64:
+		if reply < 0 {
+			return 0, errNegativeInt
+		}
+		return uint64(reply), nil
+	case []byte:
+		n, err := strconv.ParseUint(string(reply), 10, 64)
+		return n, err
+	case nil:
+		return 0, ErrNil
+	case Error:
+		return 0, reply
+	}
+	return 0, fmt.Errorf("redigo: unexpected type for Uint64, got type %T", reply)
+}
+
+// Float64 is a helper that converts a command reply to 64 bit float. If err is
+// not equal to nil, then Float64 returns 0, err. Otherwise, Float64 converts
+// the reply to an int as follows:
+//
+//  Reply type    Result
+//  bulk string   parsed reply, nil
+//  nil           0, ErrNil
+//  other         0, error
+func Float64(reply interface{}, err error) (float64, error) {
+	if err != nil {
+		return 0, err
+	}
+	switch reply := reply.(type) {
+	case []byte:
+		n, err := strconv.ParseFloat(string(reply), 64)
+		return n, err
+	case nil:
+		return 0, ErrNil
+	case Error:
+		return 0, reply
+	}
+	return 0, fmt.Errorf("redigo: unexpected type for Float64, got type %T", reply)
+}
+
+// String is a helper that converts a command reply to a string. If err is not
+// equal to nil, then String returns "", err. Otherwise String converts the
+// reply to a string as follows:
+//
+//  Reply type      Result
+//  bulk string     string(reply), nil
+//  simple string   reply, nil
+//  nil             "",  ErrNil
+//  other           "",  error
+func String(reply interface{}, err error) (string, error) {
+	if err != nil {
+		return "", err
+	}
+	switch reply := reply.(type) {
+	case []byte:
+		return string(reply), nil
+	case string:
+		return reply, nil
+	case nil:
+		return "", ErrNil
+	case Error:
+		return "", reply
+	}
+	return "", fmt.Errorf("redigo: unexpected type for String, got type %T", reply)
+}
+
+// Bytes is a helper that converts a command reply to a slice of bytes. If err
+// is not equal to nil, then Bytes returns nil, err. Otherwise Bytes converts
+// the reply to a slice of bytes as follows:
+//
+//  Reply type      Result
+//  bulk string     reply, nil
+//  simple string   []byte(reply), nil
+//  nil             nil, ErrNil
+//  other           nil, error
+func Bytes(reply interface{}, err error) ([]byte, error) {
+	if err != nil {
+		return nil, err
+	}
+	switch reply := reply.(type) {
+	case []byte:
+		return reply, nil
+	case string:
+		return []byte(reply), nil
+	case nil:
+		return nil, ErrNil
+	case Error:
+		return nil, reply
+	}
+	return nil, fmt.Errorf("redigo: unexpected type for Bytes, got type %T", reply)
+}
+
+// Bool is a helper that converts a command reply to a boolean. If err is not
+// equal to nil, then Bool returns false, err. Otherwise Bool converts the
+// reply to boolean as follows:
+//
+//  Reply type      Result
+//  integer         value != 0, nil
+//  bulk string     strconv.ParseBool(reply)
+//  nil             false, ErrNil
+//  other           false, error
+func Bool(reply interface{}, err error) (bool, error) {
+	if err != nil {
+		return false, err
+	}
+	switch reply := reply.(type) {
+	case int64:
+		return reply != 0, nil
+	case []byte:
+		return strconv.ParseBool(string(reply))
+	case nil:
+		return false, ErrNil
+	case Error:
+		return false, reply
+	}
+	return false, fmt.Errorf("redigo: unexpected type for Bool, got type %T", reply)
+}
+
+// MultiBulk is a helper that converts an array command reply to a []interface{}.
+//
+// Deprecated: Use Values instead.
+func MultiBulk(reply interface{}, err error) ([]interface{}, error) { return Values(reply, err) }
+
+// Values is a helper that converts an array command reply to a []interface{}.
+// If err is not equal to nil, then Values returns nil, err. Otherwise, Values
+// converts the reply as follows:
+//
+//  Reply type      Result
+//  array           reply, nil
+//  nil             nil, ErrNil
+//  other           nil, error
+func Values(reply interface{}, err error) ([]interface{}, error) {
+	if err != nil {
+		return nil, err
+	}
+	switch reply := reply.(type) {
+	case []interface{}:
+		return reply, nil
+	case nil:
+		return nil, ErrNil
+	case Error:
+		return nil, reply
+	}
+	return nil, fmt.Errorf("redigo: unexpected type for Values, got type %T", reply)
+}
+
+// Strings is a helper that converts an array command reply to a []string. If
+// err is not equal to nil, then Strings returns nil, err. Nil array items are
+// converted to "" in the output slice. Strings returns an error if an array
+// item is not a bulk string or nil.
+func Strings(reply interface{}, err error) ([]string, error) {
+	if err != nil {
+		return nil, err
+	}
+	switch reply := reply.(type) {
+	case []interface{}:
+		result := make([]string, len(reply))
+		for i := range reply {
+			if reply[i] == nil {
+				continue
+			}
+			p, ok := reply[i].([]byte)
+			if !ok {
+				return nil, fmt.Errorf("redigo: unexpected element type for Strings, got type %T", reply[i])
+			}
+			result[i] = string(p)
+		}
+		return result, nil
+	case nil:
+		return nil, ErrNil
+	case Error:
+		return nil, reply
+	}
+	return nil, fmt.Errorf("redigo: unexpected type for Strings, got type %T", reply)
+}
+
+// ByteSlices is a helper that converts an array command reply to a [][]byte.
+// If err is not equal to nil, then ByteSlices returns nil, err. Nil array
+// items are stay nil. ByteSlices returns an error if an array item is not a
+// bulk string or nil.
+func ByteSlices(reply interface{}, err error) ([][]byte, error) {
+	if err != nil {
+		return nil, err
+	}
+	switch reply := reply.(type) {
+	case []interface{}:
+		result := make([][]byte, len(reply))
+		for i := range reply {
+			if reply[i] == nil {
+				continue
+			}
+			p, ok := reply[i].([]byte)
+			if !ok {
+				return nil, fmt.Errorf("redigo: unexpected element type for ByteSlices, got type %T", reply[i])
+			}
+			result[i] = p
+		}
+		return result, nil
+	case nil:
+		return nil, ErrNil
+	case Error:
+		return nil, reply
+	}
+	return nil, fmt.Errorf("redigo: unexpected type for ByteSlices, got type %T", reply)
+}
+
+// Ints is a helper that converts an array command reply to a []int. If
+// err is not equal to nil, then Ints returns nil, err.
+func Ints(reply interface{}, err error) ([]int, error) {
+	var ints []int
+	values, err := Values(reply, err)
+	if err != nil {
+		return ints, err
+	}
+	if err := ScanSlice(values, &ints); err != nil {
+		return ints, err
+	}
+	return ints, nil
+}
+
+// StringMap is a helper that converts an array of strings (alternating key, value)
+// into a map[string]string. The HGETALL and CONFIG GET commands return replies in this format.
+// Requires an even number of values in result.
+func StringMap(result interface{}, err error) (map[string]string, error) {
+	values, err := Values(result, err)
+	if err != nil {
+		return nil, err
+	}
+	if len(values)%2 != 0 {
+		return nil, errors.New("redigo: StringMap expects even number of values result")
+	}
+	m := make(map[string]string, len(values)/2)
+	for i := 0; i < len(values); i += 2 {
+		key, okKey := values[i].([]byte)
+		value, okValue := values[i+1].([]byte)
+		if !okKey || !okValue {
+			return nil, errors.New("redigo: ScanMap key not a bulk string value")
+		}
+		m[string(key)] = string(value)
+	}
+	return m, nil
+}
+
+// IntMap is a helper that converts an array of strings (alternating key, value)
+// into a map[string]int. The HGETALL commands return replies in this format.
+// Requires an even number of values in result.
+func IntMap(result interface{}, err error) (map[string]int, error) {
+	values, err := Values(result, err)
+	if err != nil {
+		return nil, err
+	}
+	if len(values)%2 != 0 {
+		return nil, errors.New("redigo: IntMap expects even number of values result")
+	}
+	m := make(map[string]int, len(values)/2)
+	for i := 0; i < len(values); i += 2 {
+		key, ok := values[i].([]byte)
+		if !ok {
+			return nil, errors.New("redigo: ScanMap key not a bulk string value")
+		}
+		value, err := Int(values[i+1], nil)
+		if err != nil {
+			return nil, err
+		}
+		m[string(key)] = value
+	}
+	return m, nil
+}
+
+// Int64Map is a helper that converts an array of strings (alternating key, value)
+// into a map[string]int64. The HGETALL commands return replies in this format.
+// Requires an even number of values in result.
+func Int64Map(result interface{}, err error) (map[string]int64, error) {
+	values, err := Values(result, err)
+	if err != nil {
+		return nil, err
+	}
+	if len(values)%2 != 0 {
+		return nil, errors.New("redigo: Int64Map expects even number of values result")
+	}
+	m := make(map[string]int64, len(values)/2)
+	for i := 0; i < len(values); i += 2 {
+		key, ok := values[i].([]byte)
+		if !ok {
+			return nil, errors.New("redigo: ScanMap key not a bulk string value")
+		}
+		value, err := Int64(values[i+1], nil)
+		if err != nil {
+			return nil, err
+		}
+		m[string(key)] = value
+	}
+	return m, nil
+}

vendor/github.com/minio/redigo/redis/scan.go

@@ -0,0 +1,555 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+func ensureLen(d reflect.Value, n int) {
+	if n > d.Cap() {
+		d.Set(reflect.MakeSlice(d.Type(), n, n))
+	} else {
+		d.SetLen(n)
+	}
+}
+
+func cannotConvert(d reflect.Value, s interface{}) error {
+	var sname string
+	switch s.(type) {
+	case string:
+		sname = "Redis simple string"
+	case Error:
+		sname = "Redis error"
+	case int64:
+		sname = "Redis integer"
+	case []byte:
+		sname = "Redis bulk string"
+	case []interface{}:
+		sname = "Redis array"
+	default:
+		sname = reflect.TypeOf(s).String()
+	}
+	return fmt.Errorf("cannot convert from %s to %s", sname, d.Type())
+}
+
+func convertAssignBulkString(d reflect.Value, s []byte) (err error) {
+	switch d.Type().Kind() {
+	case reflect.Float32, reflect.Float64:
+		var x float64
+		x, err = strconv.ParseFloat(string(s), d.Type().Bits())
+		d.SetFloat(x)
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		var x int64
+		x, err = strconv.ParseInt(string(s), 10, d.Type().Bits())
+		d.SetInt(x)
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		var x uint64
+		x, err = strconv.ParseUint(string(s), 10, d.Type().Bits())
+		d.SetUint(x)
+	case reflect.Bool:
+		var x bool
+		x, err = strconv.ParseBool(string(s))
+		d.SetBool(x)
+	case reflect.String:
+		d.SetString(string(s))
+	case reflect.Slice:
+		if d.Type().Elem().Kind() != reflect.Uint8 {
+			err = cannotConvert(d, s)
+		} else {
+			d.SetBytes(s)
+		}
+	default:
+		err = cannotConvert(d, s)
+	}
+	return
+}
+
+func convertAssignInt(d reflect.Value, s int64) (err error) {
+	switch d.Type().Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		d.SetInt(s)
+		if d.Int() != s {
+			err = strconv.ErrRange
+			d.SetInt(0)
+		}
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		if s < 0 {
+			err = strconv.ErrRange
+		} else {
+			x := uint64(s)
+			d.SetUint(x)
+			if d.Uint() != x {
+				err = strconv.ErrRange
+				d.SetUint(0)
+			}
+		}
+	case reflect.Bool:
+		d.SetBool(s != 0)
+	default:
+		err = cannotConvert(d, s)
+	}
+	return
+}
+
+func convertAssignValue(d reflect.Value, s interface{}) (err error) {
+	switch s := s.(type) {
+	case []byte:
+		err = convertAssignBulkString(d, s)
+	case int64:
+		err = convertAssignInt(d, s)
+	default:
+		err = cannotConvert(d, s)
+	}
+	return err
+}
+
+func convertAssignArray(d reflect.Value, s []interface{}) error {
+	if d.Type().Kind() != reflect.Slice {
+		return cannotConvert(d, s)
+	}
+	ensureLen(d, len(s))
+	for i := 0; i < len(s); i++ {
+		if err := convertAssignValue(d.Index(i), s[i]); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func convertAssign(d interface{}, s interface{}) (err error) {
+	// Handle the most common destination types using type switches and
+	// fall back to reflection for all other types.
+	switch s := s.(type) {
+	case nil:
+		// ingore
+	case []byte:
+		switch d := d.(type) {
+		case *string:
+			*d = string(s)
+		case *int:
+			*d, err = strconv.Atoi(string(s))
+		case *bool:
+			*d, err = strconv.ParseBool(string(s))
+		case *[]byte:
+			*d = s
+		case *interface{}:
+			*d = s
+		case nil:
+			// skip value
+		default:
+			if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
+				err = cannotConvert(d, s)
+			} else {
+				err = convertAssignBulkString(d.Elem(), s)
+			}
+		}
+	case int64:
+		switch d := d.(type) {
+		case *int:
+			x := int(s)
+			if int64(x) != s {
+				err = strconv.ErrRange
+				x = 0
+			}
+			*d = x
+		case *bool:
+			*d = s != 0
+		case *interface{}:
+			*d = s
+		case nil:
+			// skip value
+		default:
+			if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
+				err = cannotConvert(d, s)
+			} else {
+				err = convertAssignInt(d.Elem(), s)
+			}
+		}
+	case string:
+		switch d := d.(type) {
+		case *string:
+			*d = string(s)
+		default:
+			err = cannotConvert(reflect.ValueOf(d), s)
+		}
+	case []interface{}:
+		switch d := d.(type) {
+		case *[]interface{}:
+			*d = s
+		case *interface{}:
+			*d = s
+		case nil:
+			// skip value
+		default:
+			if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
+				err = cannotConvert(d, s)
+			} else {
+				err = convertAssignArray(d.Elem(), s)
+			}
+		}
+	case Error:
+		err = s
+	default:
+		err = cannotConvert(reflect.ValueOf(d), s)
+	}
+	return
+}
+
+// Scan copies from src to the values pointed at by dest.
+//
+// The values pointed at by dest must be an integer, float, boolean, string,
+// []byte, interface{} or slices of these types. Scan uses the standard strconv
+// package to convert bulk strings to numeric and boolean types.
+//
+// If a dest value is nil, then the corresponding src value is skipped.
+//
+// If a src element is nil, then the corresponding dest value is not modified.
+//
+// To enable easy use of Scan in a loop, Scan returns the slice of src
+// following the copied values.
+func Scan(src []interface{}, dest ...interface{}) ([]interface{}, error) {
+	if len(src) < len(dest) {
+		return nil, errors.New("redigo.Scan: array short")
+	}
+	var err error
+	for i, d := range dest {
+		err = convertAssign(d, src[i])
+		if err != nil {
+			err = fmt.Errorf("redigo.Scan: cannot assign to dest %d: %v", i, err)
+			break
+		}
+	}
+	return src[len(dest):], err
+}
+
+type fieldSpec struct {
+	name      string
+	index     []int
+	omitEmpty bool
+}
+
+type structSpec struct {
+	m map[string]*fieldSpec
+	l []*fieldSpec
+}
+
+func (ss *structSpec) fieldSpec(name []byte) *fieldSpec {
+	return ss.m[string(name)]
+}
+
+func compileStructSpec(t reflect.Type, depth map[string]int, index []int, ss *structSpec) {
+	for i := 0; i < t.NumField(); i++ {
+		f := t.Field(i)
+		switch {
+		case f.PkgPath != "" && !f.Anonymous:
+			// Ignore unexported fields.
+		case f.Anonymous:
+			// TODO: Handle pointers. Requires change to decoder and
+			// protection against infinite recursion.
+			if f.Type.Kind() == reflect.Struct {
+				compileStructSpec(f.Type, depth, append(index, i), ss)
+			}
+		default:
+			fs := &fieldSpec{name: f.Name}
+			tag := f.Tag.Get("redis")
+			p := strings.Split(tag, ",")
+			if len(p) > 0 {
+				if p[0] == "-" {
+					continue
+				}
+				if len(p[0]) > 0 {
+					fs.name = p[0]
+				}
+				for _, s := range p[1:] {
+					switch s {
+					case "omitempty":
+						fs.omitEmpty = true
+					default:
+						panic(fmt.Errorf("redigo: unknown field tag %s for type %s", s, t.Name()))
+					}
+				}
+			}
+			d, found := depth[fs.name]
+			if !found {
+				d = 1 << 30
+			}
+			switch {
+			case len(index) == d:
+				// At same depth, remove from result.
+				delete(ss.m, fs.name)
+				j := 0
+				for i := 0; i < len(ss.l); i++ {
+					if fs.name != ss.l[i].name {
+						ss.l[j] = ss.l[i]
+						j += 1
+					}
+				}
+				ss.l = ss.l[:j]
+			case len(index) < d:
+				fs.index = make([]int, len(index)+1)
+				copy(fs.index, index)
+				fs.index[len(index)] = i
+				depth[fs.name] = len(index)
+				ss.m[fs.name] = fs
+				ss.l = append(ss.l, fs)
+			}
+		}
+	}
+}
+
+var (
+	structSpecMutex  sync.RWMutex
+	structSpecCache  = make(map[reflect.Type]*structSpec)
+	defaultFieldSpec = &fieldSpec{}
+)
+
+func structSpecForType(t reflect.Type) *structSpec {
+
+	structSpecMutex.RLock()
+	ss, found := structSpecCache[t]
+	structSpecMutex.RUnlock()
+	if found {
+		return ss
+	}
+
+	structSpecMutex.Lock()
+	defer structSpecMutex.Unlock()
+	ss, found = structSpecCache[t]
+	if found {
+		return ss
+	}
+
+	ss = &structSpec{m: make(map[string]*fieldSpec)}
+	compileStructSpec(t, make(map[string]int), nil, ss)
+	structSpecCache[t] = ss
+	return ss
+}
+
+var errScanStructValue = errors.New("redigo.ScanStruct: value must be non-nil pointer to a struct")
+
+// ScanStruct scans alternating names and values from src to a struct. The
+// HGETALL and CONFIG GET commands return replies in this format.
+//
+// ScanStruct uses exported field names to match values in the response. Use
+// 'redis' field tag to override the name:
+//
+//      Field int `redis:"myName"`
+//
+// Fields with the tag redis:"-" are ignored.
+//
+// Integer, float, boolean, string and []byte fields are supported. Scan uses the
+// standard strconv package to convert bulk string values to numeric and
+// boolean types.
+//
+// If a src element is nil, then the corresponding field is not modified.
+func ScanStruct(src []interface{}, dest interface{}) error {
+	d := reflect.ValueOf(dest)
+	if d.Kind() != reflect.Ptr || d.IsNil() {
+		return errScanStructValue
+	}
+	d = d.Elem()
+	if d.Kind() != reflect.Struct {
+		return errScanStructValue
+	}
+	ss := structSpecForType(d.Type())
+
+	if len(src)%2 != 0 {
+		return errors.New("redigo.ScanStruct: number of values not a multiple of 2")
+	}
+
+	for i := 0; i < len(src); i += 2 {
+		s := src[i+1]
+		if s == nil {
+			continue
+		}
+		name, ok := src[i].([]byte)
+		if !ok {
+			return fmt.Errorf("redigo.ScanStruct: key %d not a bulk string value", i)
+		}
+		fs := ss.fieldSpec(name)
+		if fs == nil {
+			continue
+		}
+		if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
+			return fmt.Errorf("redigo.ScanStruct: cannot assign field %s: %v", fs.name, err)
+		}
+	}
+	return nil
+}
+
+var (
+	errScanSliceValue = errors.New("redigo.ScanSlice: dest must be non-nil pointer to a struct")
+)
+
+// ScanSlice scans src to the slice pointed to by dest. The elements the dest
+// slice must be integer, float, boolean, string, struct or pointer to struct
+// values.
+//
+// Struct fields must be integer, float, boolean or string values. All struct
+// fields are used unless a subset is specified using fieldNames.
+func ScanSlice(src []interface{}, dest interface{}, fieldNames ...string) error {
+	d := reflect.ValueOf(dest)
+	if d.Kind() != reflect.Ptr || d.IsNil() {
+		return errScanSliceValue
+	}
+	d = d.Elem()
+	if d.Kind() != reflect.Slice {
+		return errScanSliceValue
+	}
+
+	isPtr := false
+	t := d.Type().Elem()
+	if t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Struct {
+		isPtr = true
+		t = t.Elem()
+	}
+
+	if t.Kind() != reflect.Struct {
+		ensureLen(d, len(src))
+		for i, s := range src {
+			if s == nil {
+				continue
+			}
+			if err := convertAssignValue(d.Index(i), s); err != nil {
+				return fmt.Errorf("redigo.ScanSlice: cannot assign element %d: %v", i, err)
+			}
+		}
+		return nil
+	}
+
+	ss := structSpecForType(t)
+	fss := ss.l
+	if len(fieldNames) > 0 {
+		fss = make([]*fieldSpec, len(fieldNames))
+		for i, name := range fieldNames {
+			fss[i] = ss.m[name]
+			if fss[i] == nil {
+				return fmt.Errorf("redigo.ScanSlice: ScanSlice bad field name %s", name)
+			}
+		}
+	}
+
+	if len(fss) == 0 {
+		return errors.New("redigo.ScanSlice: no struct fields")
+	}
+
+	n := len(src) / len(fss)
+	if n*len(fss) != len(src) {
+		return errors.New("redigo.ScanSlice: length not a multiple of struct field count")
+	}
+
+	ensureLen(d, n)
+	for i := 0; i < n; i++ {
+		d := d.Index(i)
+		if isPtr {
+			if d.IsNil() {
+				d.Set(reflect.New(t))
+			}
+			d = d.Elem()
+		}
+		for j, fs := range fss {
+			s := src[i*len(fss)+j]
+			if s == nil {
+				continue
+			}
+			if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
+				return fmt.Errorf("redigo.ScanSlice: cannot assign element %d to field %s: %v", i*len(fss)+j, fs.name, err)
+			}
+		}
+	}
+	return nil
+}
+
+// Args is a helper for constructing command arguments from structured values.
+type Args []interface{}
+
+// Add returns the result of appending value to args.
+func (args Args) Add(value ...interface{}) Args {
+	return append(args, value...)
+}
+
+// AddFlat returns the result of appending the flattened value of v to args.
+//
+// Maps are flattened by appending the alternating keys and map values to args.
+//
+// Slices are flattened by appending the slice elements to args.
+//
+// Structs are flattened by appending the alternating names and values of
+// exported fields to args. If v is a nil struct pointer, then nothing is
+// appended. The 'redis' field tag overrides struct field names. See ScanStruct
+// for more information on the use of the 'redis' field tag.
+//
+// Other types are appended to args as is.
+func (args Args) AddFlat(v interface{}) Args {
+	rv := reflect.ValueOf(v)
+	switch rv.Kind() {
+	case reflect.Struct:
+		args = flattenStruct(args, rv)
+	case reflect.Slice:
+		for i := 0; i < rv.Len(); i++ {
+			args = append(args, rv.Index(i).Interface())
+		}
+	case reflect.Map:
+		for _, k := range rv.MapKeys() {
+			args = append(args, k.Interface(), rv.MapIndex(k).Interface())
+		}
+	case reflect.Ptr:
+		if rv.Type().Elem().Kind() == reflect.Struct {
+			if !rv.IsNil() {
+				args = flattenStruct(args, rv.Elem())
+			}
+		} else {
+			args = append(args, v)
+		}
+	default:
+		args = append(args, v)
+	}
+	return args
+}
+
+func flattenStruct(args Args, v reflect.Value) Args {
+	ss := structSpecForType(v.Type())
+	for _, fs := range ss.l {
+		fv := v.FieldByIndex(fs.index)
+		if fs.omitEmpty {
+			var empty = false
+			switch fv.Kind() {
+			case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
+				empty = fv.Len() == 0
+			case reflect.Bool:
+				empty = !fv.Bool()
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				empty = fv.Int() == 0
+			case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+				empty = fv.Uint() == 0
+			case reflect.Float32, reflect.Float64:
+				empty = fv.Float() == 0
+			case reflect.Interface, reflect.Ptr:
+				empty = fv.IsNil()
+			}
+			if empty {
+				continue
+			}
+		}
+		args = append(args, fs.name, fv.Interface())
+	}
+	return args
+}

vendor/github.com/minio/redigo/redis/script.go

@@ -0,0 +1,86 @@
+// Copyright 2012 Gary Burd
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package redis
+
+import (
+	"crypto/sha1"
+	"encoding/hex"
+	"io"
+	"strings"
+)
+
+// Script encapsulates the source, hash and key count for a Lua script. See
+// http://redis.io/commands/eval for information on scripts in Redis.
+type Script struct {
+	keyCount int
+	src      string
+	hash     string
+}
+
+// NewScript returns a new script object. If keyCount is greater than or equal
+// to zero, then the count is automatically inserted in the EVAL command
+// argument list. If keyCount is less than zero, then the application supplies
+// the count as the first value in the keysAndArgs argument to the Do, Send and
+// SendHash methods.
+func NewScript(keyCount int, src string) *Script {
+	h := sha1.New()
+	io.WriteString(h, src)
+	return &Script{keyCount, src, hex.EncodeToString(h.Sum(nil))}
+}
+
+func (s *Script) args(spec string, keysAndArgs []interface{}) []interface{} {
+	var args []interface{}
+	if s.keyCount < 0 {
+		args = make([]interface{}, 1+len(keysAndArgs))
+		args[0] = spec
+		copy(args[1:], keysAndArgs)
+	} else {
+		args = make([]interface{}, 2+len(keysAndArgs))
+		args[0] = spec
+		args[1] = s.keyCount
+		copy(args[2:], keysAndArgs)
+	}
+	return args
+}
+
+// Do evaluates the script. Under the covers, Do optimistically evaluates the
+// script using the EVALSHA command. If the command fails because the script is
+// not loaded, then Do evaluates the script using the EVAL command (thus
+// causing the script to load).
+func (s *Script) Do(c Conn, keysAndArgs ...interface{}) (interface{}, error) {
+	v, err := c.Do("EVALSHA", s.args(s.hash, keysAndArgs)...)
+	if e, ok := err.(Error); ok && strings.HasPrefix(string(e), "NOSCRIPT ") {
+		v, err = c.Do("EVAL", s.args(s.src, keysAndArgs)...)
+	}
+	return v, err
+}
+
+// SendHash evaluates the script without waiting for the reply. The script is
+// evaluated with the EVALSHA command. The application must ensure that the
+// script is loaded by a previous call to Send, Do or Load methods.
+func (s *Script) SendHash(c Conn, keysAndArgs ...interface{}) error {
+	return c.Send("EVALSHA", s.args(s.hash, keysAndArgs)...)
+}
+
+// Send evaluates the script without waiting for the reply.
+func (s *Script) Send(c Conn, keysAndArgs ...interface{}) error {
+	return c.Send("EVAL", s.args(s.src, keysAndArgs)...)
+}
+
+// Load loads the script without evaluating it.
+func (s *Script) Load(c Conn) error {
+	_, err := c.Do("SCRIPT", "LOAD", s.src)
+	return err
+}

vendor/github.com/streadway/amqp/LICENSE

@@ -0,0 +1,23 @@
+Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this
+list of conditions and the following disclaimer.
+
+Redistributions in binary form must reproduce the above copyright notice, this
+list of conditions and the following disclaimer in the documentation and/or
+other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/streadway/amqp/README.md

@@ -0,0 +1,81 @@
+# AMQP
+
+AMQP 0.9.1 client with RabbitMQ extensions in Go.
+
+# Status
+
+*Beta*
+
+[![Build Status](https://secure.travis-ci.org/streadway/amqp.png)](http://travis-ci.org/streadway/amqp)
+
+API changes unlikely and will be discussed on [Github
+issues](https://github.com/streadway/amqp/issues) along with any bugs or
+enhancements.
+
+# Goals
+
+Provide a functional interface that closely represents the AMQP 0.9.1 model
+targeted to RabbitMQ as a server.  This includes the minimum necessary to
+interact the semantics of the protocol.
+
+# Non-goals
+
+Things not intended to be supported.
+
+  * Auto reconnect and re-synchronization of client and server topologies.
+    * Reconnection would require understanding the error paths when the
+      topology cannot be declared on reconnect.  This would require a new set
+      of types and code paths that are best suited at the call-site of this
+      package.  AMQP has a dynamic topology that needs all peers to agree. If
+      this doesn't happen, the behavior is undefined.  Instead of producing a
+      possible interface with undefined behavior, this package is designed to
+      be simple for the caller to implement the necessary connection-time
+      topology declaration so that reconnection is trivial and encapsulated in
+      the caller's application code.
+  * AMQP Protocol negotiation for forward or backward compatibility.
+    * 0.9.1 is stable and widely deployed.  Versions 0.10 and 1.0 are divergent
+      specifications that change the semantics and wire format of the protocol.
+      We will accept patches for other protocol support but have no plans for
+      implementation ourselves.
+  * Anything other than PLAIN and EXTERNAL authentication mechanisms.
+    * Keeping the mechanisms interface modular makes it possible to extend
+      outside of this package.  If other mechanisms prove to be popular, then
+      we would accept patches to include them in this pacakge.
+
+# Usage
+
+See the 'examples' subdirectory for simple producers and consumers executables.
+If you have a use-case in mind which isn't well-represented by the examples,
+please file an issue.
+
+# Documentation
+
+Use [Godoc documentation](http://godoc.org/github.com/streadway/amqp) for
+reference and usage.
+
+[RabbitMQ tutorials in
+Go](https://github.com/rabbitmq/rabbitmq-tutorials/tree/master/go) are also
+available.
+
+# Contributing
+
+Pull requests are very much welcomed.  Create your pull request on a non-master
+branch, make sure a test or example is included that covers your change and
+your commits represent coherent changes that include a reason for the change.
+
+To run the integration tests, make sure you have RabbitMQ running on any host,
+export the environment variable `AMQP_URL=amqp://host/` and run `go test -tags
+integration`.  TravisCI will also run the integration tests.
+
+Thanks to the [community of contributors](https://github.com/streadway/amqp/graphs/contributors).
+
+# External packages
+
+  * Google App Engine Dialer support: [https://github.com/soundtrackyourbrand/gaeamqp](https://github.com/soundtrackyourbrand/gaeamqp)
+  * RabbitMQ examples in Go: [https://github.com/rabbitmq/rabbitmq-tutorials/tree/master/go](https://github.com/rabbitmq/rabbitmq-tutorials/tree/master/go)
+
+# License
+
+BSD 2 clause - see LICENSE for more details.
+
+

vendor/github.com/streadway/amqp/allocator.go

@@ -0,0 +1,106 @@
+package amqp
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+)
+
+const (
+	free      = 0
+	allocated = 1
+)
+
+// allocator maintains a bitset of allocated numbers.
+type allocator struct {
+	pool *big.Int
+	last int
+	low  int
+	high int
+}
+
+// NewAllocator reserves and frees integers out of a range between low and
+// high.
+//
+// O(N) worst case space used, where N is maximum allocated, divided by
+// sizeof(big.Word)
+func newAllocator(low, high int) *allocator {
+	return &allocator{
+		pool: big.NewInt(0),
+		last: low,
+		low:  low,
+		high: high,
+	}
+}
+
+// String returns a string describing the contents of the allocator like
+// "allocator[low..high] reserved..until"
+//
+// O(N) where N is high-low
+func (a allocator) String() string {
+	b := &bytes.Buffer{}
+	fmt.Fprintf(b, "allocator[%d..%d]", a.low, a.high)
+
+	for low := a.low; low <= a.high; low++ {
+		high := low
+		for a.reserved(high) && high <= a.high {
+			high++
+		}
+
+		if high > low+1 {
+			fmt.Fprintf(b, " %d..%d", low, high-1)
+		} else if high > low {
+			fmt.Fprintf(b, " %d", high-1)
+		}
+
+		low = high
+	}
+	return b.String()
+}
+
+// Next reserves and returns the next available number out of the range between
+// low and high.  If no number is available, false is returned.
+//
+// O(N) worst case runtime where N is allocated, but usually O(1) due to a
+// rolling index into the oldest allocation.
+func (a *allocator) next() (int, bool) {
+	wrapped := a.last
+
+	// Find trailing bit
+	for ; a.last <= a.high; a.last++ {
+		if a.reserve(a.last) {
+			return a.last, true
+		}
+	}
+
+	// Find preceeding free'd pool
+	a.last = a.low
+
+	for ; a.last < wrapped; a.last++ {
+		if a.reserve(a.last) {
+			return a.last, true
+		}
+	}
+
+	return 0, false
+}
+
+// reserve claims the bit if it is not already claimed, returning true if
+// succesfully claimed.
+func (a *allocator) reserve(n int) bool {
+	if a.reserved(n) {
+		return false
+	}
+	a.pool.SetBit(a.pool, n-a.low, allocated)
+	return true
+}
+
+// reserved returns true if the integer has been allocated
+func (a *allocator) reserved(n int) bool {
+	return a.pool.Bit(n-a.low) == allocated
+}
+
+// release frees the use of the number for another allocation
+func (a *allocator) release(n int) {
+	a.pool.SetBit(a.pool, n-a.low, free)
+}

vendor/github.com/streadway/amqp/auth.go

@@ -0,0 +1,44 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"fmt"
+)
+
+// Authentication interface provides a means for different SASL authentication
+// mechanisms to be used during connection tuning.
+type Authentication interface {
+	Mechanism() string
+	Response() string
+}
+
+// PlainAuth is a similar to Basic Auth in HTTP.
+type PlainAuth struct {
+	Username string
+	Password string
+}
+
+func (me *PlainAuth) Mechanism() string {
+	return "PLAIN"
+}
+
+func (me *PlainAuth) Response() string {
+	return fmt.Sprintf("\000%s\000%s", me.Username, me.Password)
+}
+
+// Finds the first mechanism preferred by the client that the server supports.
+func pickSASLMechanism(client []Authentication, serverMechanisms []string) (auth Authentication, ok bool) {
+	for _, auth = range client {
+		for _, mech := range serverMechanisms {
+			if auth.Mechanism() == mech {
+				return auth, true
+			}
+		}
+	}
+
+	return
+}

vendor/github.com/streadway/amqp/certs.sh

@@ -0,0 +1,159 @@
+#!/bin/sh
+#
+# Creates the CA, server and client certs to be used by tls_test.go
+# http://www.rabbitmq.com/ssl.html
+#
+# Copy stdout into the const section of tls_test.go or use for RabbitMQ
+#
+root=$PWD/certs
+
+if [ -f $root/ca/serial ]; then
+  echo >&2 "Previous installation found"
+  echo >&2 "Remove $root/ca and rerun to overwrite"
+  exit 1
+fi
+
+mkdir -p $root/ca/private
+mkdir -p $root/ca/certs
+mkdir -p $root/server
+mkdir -p $root/client
+
+cd $root/ca
+
+chmod 700 private
+touch index.txt
+echo 'unique_subject = no' > index.txt.attr
+echo '01' > serial
+echo >openssl.cnf '
+[ ca ]
+default_ca = testca
+
+[ testca ]
+dir = .
+certificate = $dir/cacert.pem
+database = $dir/index.txt
+new_certs_dir = $dir/certs
+private_key = $dir/private/cakey.pem
+serial = $dir/serial
+
+default_crl_days = 7
+default_days = 3650
+default_md = sha1
+
+policy = testca_policy
+x509_extensions = certificate_extensions
+
+[ testca_policy ]
+commonName = supplied
+stateOrProvinceName = optional
+countryName = optional
+emailAddress = optional
+organizationName = optional
+organizationalUnitName = optional
+
+[ certificate_extensions ]
+basicConstraints = CA:false
+
+[ req ]
+default_bits = 2048
+default_keyfile = ./private/cakey.pem
+default_md = sha1
+prompt = yes
+distinguished_name = root_ca_distinguished_name
+x509_extensions = root_ca_extensions
+
+[ root_ca_distinguished_name ]
+commonName = hostname
+
+[ root_ca_extensions ]
+basicConstraints = CA:true
+keyUsage = keyCertSign, cRLSign
+
+[ client_ca_extensions ]
+basicConstraints = CA:false
+keyUsage = digitalSignature
+extendedKeyUsage = 1.3.6.1.5.5.7.3.2
+
+[ server_ca_extensions ]
+basicConstraints = CA:false
+keyUsage = keyEncipherment
+extendedKeyUsage = 1.3.6.1.5.5.7.3.1
+subjectAltName = @alt_names
+
+[ alt_names ]
+IP.1 = 127.0.0.1
+'
+
+openssl req \
+  -x509 \
+  -nodes \
+  -config openssl.cnf \
+  -newkey rsa:2048 \
+  -days 3650 \
+  -subj "/CN=MyTestCA/" \
+  -out cacert.pem \
+  -outform PEM
+
+openssl x509 \
+  -in cacert.pem \
+  -out cacert.cer \
+  -outform DER
+
+openssl genrsa -out $root/server/key.pem 2048
+openssl genrsa -out $root/client/key.pem 2048
+
+openssl req \
+  -new \
+  -nodes \
+  -config openssl.cnf \
+  -subj "/CN=127.0.0.1/O=server/" \
+  -key $root/server/key.pem \
+  -out $root/server/req.pem \
+  -outform PEM
+
+openssl req \
+  -new \
+  -nodes \
+  -config openssl.cnf \
+  -subj "/CN=127.0.0.1/O=client/" \
+  -key $root/client/key.pem \
+  -out $root/client/req.pem \
+  -outform PEM
+
+openssl ca \
+  -config openssl.cnf \
+  -in $root/server/req.pem \
+  -out $root/server/cert.pem \
+  -notext \
+  -batch \
+  -extensions server_ca_extensions
+
+openssl ca \
+  -config openssl.cnf \
+  -in $root/client/req.pem \
+  -out $root/client/cert.pem \
+  -notext \
+  -batch \
+  -extensions client_ca_extensions
+
+cat <<-END
+const caCert = \`
+`cat $root/ca/cacert.pem`
+\`
+
+const serverCert = \`
+`cat $root/server/cert.pem`
+\`
+
+const serverKey = \`
+`cat $root/server/key.pem`
+\`
+
+const clientCert = \`
+`cat $root/client/cert.pem`
+\`
+
+const clientKey = \`
+`cat $root/client/key.pem`
+\`
+END

vendor/github.com/streadway/amqp/confirms.go

@@ -0,0 +1,93 @@
+package amqp
+
+import "sync"
+
+// confirms resequences and notifies one or multiple publisher confirmation listeners
+type confirms struct {
+	m         sync.Mutex
+	listeners []chan Confirmation
+	sequencer map[uint64]Confirmation
+	published uint64
+	expecting uint64
+}
+
+// newConfirms allocates a confirms
+func newConfirms() *confirms {
+	return &confirms{
+		sequencer: map[uint64]Confirmation{},
+		published: 0,
+		expecting: 1,
+	}
+}
+
+func (c *confirms) Listen(l chan Confirmation) {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	c.listeners = append(c.listeners, l)
+}
+
+// publish increments the publishing counter
+func (c *confirms) Publish() uint64 {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	c.published++
+	return c.published
+}
+
+// confirm confirms one publishing, increments the expecting delivery tag, and
+// removes bookkeeping for that delivery tag.
+func (c *confirms) confirm(confirmation Confirmation) {
+	delete(c.sequencer, c.expecting)
+	c.expecting++
+	for _, l := range c.listeners {
+		l <- confirmation
+	}
+}
+
+// resequence confirms any out of order delivered confirmations
+func (c *confirms) resequence() {
+	for c.expecting <= c.published {
+		sequenced, found := c.sequencer[c.expecting]
+		if !found {
+			return
+		}
+		c.confirm(sequenced)
+	}
+}
+
+// one confirms one publishing and all following in the publishing sequence
+func (c *confirms) One(confirmed Confirmation) {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	if c.expecting == confirmed.DeliveryTag {
+		c.confirm(confirmed)
+	} else {
+		c.sequencer[confirmed.DeliveryTag] = confirmed
+	}
+	c.resequence()
+}
+
+// multiple confirms all publishings up until the delivery tag
+func (c *confirms) Multiple(confirmed Confirmation) {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	for c.expecting <= confirmed.DeliveryTag {
+		c.confirm(Confirmation{c.expecting, confirmed.Ack})
+	}
+}
+
+// Close closes all listeners, discarding any out of sequence confirmations
+func (c *confirms) Close() error {
+	c.m.Lock()
+	defer c.m.Unlock()
+
+	for _, l := range c.listeners {
+		close(l)
+	}
+	c.listeners = nil
+	return nil
+}

vendor/github.com/streadway/amqp/connection.go

@@ -0,0 +1,769 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"bufio"
+	"crypto/tls"
+	"io"
+	"net"
+	"reflect"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	maxChannelMax = (2 << 15) - 1
+
+	defaultHeartbeat         = 10 * time.Second
+	defaultConnectionTimeout = 30 * time.Second
+	defaultProduct           = "https://github.com/streadway/amqp"
+	defaultVersion           = "β"
+	defaultChannelMax        = maxChannelMax
+)
+
+// Config is used in DialConfig and Open to specify the desired tuning
+// parameters used during a connection open handshake.  The negotiated tuning
+// will be stored in the returned connection's Config field.
+type Config struct {
+	// The SASL mechanisms to try in the client request, and the successful
+	// mechanism used on the Connection object.
+	// If SASL is nil, PlainAuth from the URL is used.
+	SASL []Authentication
+
+	// Vhost specifies the namespace of permissions, exchanges, queues and
+	// bindings on the server.  Dial sets this to the path parsed from the URL.
+	Vhost string
+
+	ChannelMax int           // 0 max channels means 2^16 - 1
+	FrameSize  int           // 0 max bytes means unlimited
+	Heartbeat  time.Duration // less than 1s uses the server's interval
+
+	// TLSClientConfig specifies the client configuration of the TLS connection
+	// when establishing a tls transport.
+	// If the URL uses an amqps scheme, then an empty tls.Config with the
+	// ServerName from the URL is used.
+	TLSClientConfig *tls.Config
+
+	// Properties is table of properties that the client advertises to the server.
+	// This is an optional setting - if the application does not set this,
+	// the underlying library will use a generic set of client properties.
+	Properties Table
+
+	// Dial returns a net.Conn prepared for a TLS handshake with TSLClientConfig,
+	// then an AMQP connection handshake.
+	// If Dial is nil, net.DialTimeout with a 30s connection and 30s read
+	// deadline is used.
+	Dial func(network, addr string) (net.Conn, error)
+}
+
+// Connection manages the serialization and deserialization of frames from IO
+// and dispatches the frames to the appropriate channel.  All RPC methods and
+// asyncronous Publishing, Delivery, Ack, Nack and Return messages are
+// multiplexed on this channel.  There must always be active receivers for
+// every asynchronous message on this connection.
+type Connection struct {
+	destructor sync.Once  // shutdown once
+	sendM      sync.Mutex // conn writer mutex
+	m          sync.Mutex // struct field mutex
+
+	conn io.ReadWriteCloser
+
+	rpc       chan message
+	writer    *writer
+	sends     chan time.Time     // timestamps of each frame sent
+	deadlines chan readDeadliner // heartbeater updates read deadlines
+
+	allocator *allocator // id generator valid after openTune
+	channels  map[uint16]*Channel
+
+	noNotify bool // true when we will never notify again
+	closes   []chan *Error
+	blocks   []chan Blocking
+
+	errors chan *Error
+
+	Config Config // The negotiated Config after connection.open
+
+	Major      int   // Server's major version
+	Minor      int   // Server's minor version
+	Properties Table // Server properties
+}
+
+type readDeadliner interface {
+	SetReadDeadline(time.Time) error
+}
+
+type localNetAddr interface {
+	LocalAddr() net.Addr
+}
+
+// defaultDial establishes a connection when config.Dial is not provided
+func defaultDial(network, addr string) (net.Conn, error) {
+	conn, err := net.DialTimeout(network, addr, defaultConnectionTimeout)
+	if err != nil {
+		return nil, err
+	}
+
+	// Heartbeating hasn't started yet, don't stall forever on a dead server.
+	if err := conn.SetReadDeadline(time.Now().Add(defaultConnectionTimeout)); err != nil {
+		return nil, err
+	}
+
+	return conn, nil
+}
+
+// Dial accepts a string in the AMQP URI format and returns a new Connection
+// over TCP using PlainAuth.  Defaults to a server heartbeat interval of 10
+// seconds and sets the initial read deadline to 30 seconds.
+//
+// Dial uses the zero value of tls.Config when it encounters an amqps://
+// scheme.  It is equivalent to calling DialTLS(amqp, nil).
+func Dial(url string) (*Connection, error) {
+	return DialConfig(url, Config{
+		Heartbeat: defaultHeartbeat,
+	})
+}
+
+// DialTLS accepts a string in the AMQP URI format and returns a new Connection
+// over TCP using PlainAuth.  Defaults to a server heartbeat interval of 10
+// seconds and sets the initial read deadline to 30 seconds.
+//
+// DialTLS uses the provided tls.Config when encountering an amqps:// scheme.
+func DialTLS(url string, amqps *tls.Config) (*Connection, error) {
+	return DialConfig(url, Config{
+		Heartbeat:       defaultHeartbeat,
+		TLSClientConfig: amqps,
+	})
+}
+
+// DialConfig accepts a string in the AMQP URI format and a configuration for
+// the transport and connection setup, returning a new Connection.  Defaults to
+// a server heartbeat interval of 10 seconds and sets the initial read deadline
+// to 30 seconds.
+func DialConfig(url string, config Config) (*Connection, error) {
+	var err error
+	var conn net.Conn
+
+	uri, err := ParseURI(url)
+	if err != nil {
+		return nil, err
+	}
+
+	if config.SASL == nil {
+		config.SASL = []Authentication{uri.PlainAuth()}
+	}
+
+	if config.Vhost == "" {
+		config.Vhost = uri.Vhost
+	}
+
+	if uri.Scheme == "amqps" && config.TLSClientConfig == nil {
+		config.TLSClientConfig = new(tls.Config)
+	}
+
+	addr := net.JoinHostPort(uri.Host, strconv.FormatInt(int64(uri.Port), 10))
+
+	dialer := config.Dial
+	if dialer == nil {
+		dialer = defaultDial
+	}
+
+	conn, err = dialer("tcp", addr)
+	if err != nil {
+		return nil, err
+	}
+
+	if config.TLSClientConfig != nil {
+		// Use the URI's host for hostname validation unless otherwise set. Make a
+		// copy so not to modify the caller's reference when the caller reuses a
+		// tls.Config for a different URL.
+		if config.TLSClientConfig.ServerName == "" {
+			c := *config.TLSClientConfig
+			c.ServerName = uri.Host
+			config.TLSClientConfig = &c
+		}
+
+		client := tls.Client(conn, config.TLSClientConfig)
+		if err := client.Handshake(); err != nil {
+			conn.Close()
+			return nil, err
+		}
+
+		conn = client
+	}
+
+	return Open(conn, config)
+}
+
+/*
+Open accepts an already established connection, or other io.ReadWriteCloser as
+a transport.  Use this method if you have established a TLS connection or wish
+to use your own custom transport.
+
+*/
+func Open(conn io.ReadWriteCloser, config Config) (*Connection, error) {
+	me := &Connection{
+		conn:      conn,
+		writer:    &writer{bufio.NewWriter(conn)},
+		channels:  make(map[uint16]*Channel),
+		rpc:       make(chan message),
+		sends:     make(chan time.Time),
+		errors:    make(chan *Error, 1),
+		deadlines: make(chan readDeadliner, 1),
+	}
+	go me.reader(conn)
+	return me, me.open(config)
+}
+
+/*
+LocalAddr returns the local TCP peer address, or ":0" (the zero value of net.TCPAddr)
+as a fallback default value if the underlying transport does not support LocalAddr().
+*/
+func (me *Connection) LocalAddr() net.Addr {
+	if c, ok := me.conn.(localNetAddr); ok {
+		return c.LocalAddr()
+	}
+	return &net.TCPAddr{}
+}
+
+/*
+NotifyClose registers a listener for close events either initiated by an error
+accompaning a connection.close method or by a normal shutdown.
+
+On normal shutdowns, the chan will be closed.
+
+To reconnect after a transport or protocol error, register a listener here and
+re-run your setup process.
+
+*/
+func (me *Connection) NotifyClose(c chan *Error) chan *Error {
+	me.m.Lock()
+	defer me.m.Unlock()
+
+	if me.noNotify {
+		close(c)
+	} else {
+		me.closes = append(me.closes, c)
+	}
+
+	return c
+}
+
+/*
+NotifyBlock registers a listener for RabbitMQ specific TCP flow control method
+extensions connection.blocked and connection.unblocked.  Flow control is active
+with a reason when Blocking.Blocked is true.  When a Connection is blocked, all
+methods will block across all connections until server resources become free
+again.
+
+This optional extension is supported by the server when the
+"connection.blocked" server capability key is true.
+
+*/
+func (me *Connection) NotifyBlocked(c chan Blocking) chan Blocking {
+	me.m.Lock()
+	defer me.m.Unlock()
+
+	if me.noNotify {
+		close(c)
+	} else {
+		me.blocks = append(me.blocks, c)
+	}
+
+	return c
+}
+
+/*
+Close requests and waits for the response to close the AMQP connection.
+
+It's advisable to use this message when publishing to ensure all kernel buffers
+have been flushed on the server and client before exiting.
+
+An error indicates that server may not have received this request to close but
+the connection should be treated as closed regardless.
+
+After returning from this call, all resources associated with this connection,
+including the underlying io, Channels, Notify listeners and Channel consumers
+will also be closed.
+*/
+func (me *Connection) Close() error {
+	defer me.shutdown(nil)
+	return me.call(
+		&connectionClose{
+			ReplyCode: replySuccess,
+			ReplyText: "kthxbai",
+		},
+		&connectionCloseOk{},
+	)
+}
+
+func (me *Connection) closeWith(err *Error) error {
+	defer me.shutdown(err)
+	return me.call(
+		&connectionClose{
+			ReplyCode: uint16(err.Code),
+			ReplyText: err.Reason,
+		},
+		&connectionCloseOk{},
+	)
+}
+
+func (me *Connection) send(f frame) error {
+	me.sendM.Lock()
+	err := me.writer.WriteFrame(f)
+	me.sendM.Unlock()
+
+	if err != nil {
+		// shutdown could be re-entrant from signaling notify chans
+		go me.shutdown(&Error{
+			Code:   FrameError,
+			Reason: err.Error(),
+		})
+	} else {
+		// Broadcast we sent a frame, reducing heartbeats, only
+		// if there is something that can receive - like a non-reentrant
+		// call or if the heartbeater isn't running
+		select {
+		case me.sends <- time.Now():
+		default:
+		}
+	}
+
+	return err
+}
+
+func (me *Connection) shutdown(err *Error) {
+	me.destructor.Do(func() {
+		if err != nil {
+			for _, c := range me.closes {
+				c <- err
+			}
+		}
+
+		for _, ch := range me.channels {
+			me.closeChannel(ch, err)
+		}
+
+		if err != nil {
+			me.errors <- err
+		}
+
+		me.conn.Close()
+
+		for _, c := range me.closes {
+			close(c)
+		}
+
+		for _, c := range me.blocks {
+			close(c)
+		}
+
+		me.m.Lock()
+		me.noNotify = true
+		me.m.Unlock()
+	})
+}
+
+// All methods sent to the connection channel should be synchronous so we
+// can handle them directly without a framing component
+func (me *Connection) demux(f frame) {
+	if f.channel() == 0 {
+		me.dispatch0(f)
+	} else {
+		me.dispatchN(f)
+	}
+}
+
+func (me *Connection) dispatch0(f frame) {
+	switch mf := f.(type) {
+	case *methodFrame:
+		switch m := mf.Method.(type) {
+		case *connectionClose:
+			// Send immediately as shutdown will close our side of the writer.
+			me.send(&methodFrame{
+				ChannelId: 0,
+				Method:    &connectionCloseOk{},
+			})
+
+			me.shutdown(newError(m.ReplyCode, m.ReplyText))
+		case *connectionBlocked:
+			for _, c := range me.blocks {
+				c <- Blocking{Active: true, Reason: m.Reason}
+			}
+		case *connectionUnblocked:
+			for _, c := range me.blocks {
+				c <- Blocking{Active: false}
+			}
+		default:
+			me.rpc <- m
+		}
+	case *heartbeatFrame:
+		// kthx - all reads reset our deadline.  so we can drop this
+	default:
+		// lolwat - channel0 only responds to methods and heartbeats
+		me.closeWith(ErrUnexpectedFrame)
+	}
+}
+
+func (me *Connection) dispatchN(f frame) {
+	me.m.Lock()
+	channel := me.channels[f.channel()]
+	me.m.Unlock()
+
+	if channel != nil {
+		channel.recv(channel, f)
+	} else {
+		me.dispatchClosed(f)
+	}
+}
+
+// section 2.3.7: "When a peer decides to close a channel or connection, it
+// sends a Close method.  The receiving peer MUST respond to a Close with a
+// Close-Ok, and then both parties can close their channel or connection.  Note
+// that if peers ignore Close, deadlock can happen when both peers send Close
+// at the same time."
+//
+// When we don't have a channel, so we must respond with close-ok on a close
+// method.  This can happen between a channel exception on an asynchronous
+// method like basic.publish and a synchronous close with channel.close.
+// In that case, we'll get both a channel.close and channel.close-ok in any
+// order.
+func (me *Connection) dispatchClosed(f frame) {
+	// Only consider method frames, drop content/header frames
+	if mf, ok := f.(*methodFrame); ok {
+		switch mf.Method.(type) {
+		case *channelClose:
+			me.send(&methodFrame{
+				ChannelId: f.channel(),
+				Method:    &channelCloseOk{},
+			})
+		case *channelCloseOk:
+			// we are already closed, so do nothing
+		default:
+			// unexpected method on closed channel
+			me.closeWith(ErrClosed)
+		}
+	}
+}
+
+// Reads each frame off the IO and hand off to the connection object that
+// will demux the streams and dispatch to one of the opened channels or
+// handle on channel 0 (the connection channel).
+func (me *Connection) reader(r io.Reader) {
+	buf := bufio.NewReader(r)
+	frames := &reader{buf}
+	conn, haveDeadliner := r.(readDeadliner)
+
+	for {
+		frame, err := frames.ReadFrame()
+
+		if err != nil {
+			me.shutdown(&Error{Code: FrameError, Reason: err.Error()})
+			return
+		}
+
+		me.demux(frame)
+
+		if haveDeadliner {
+			me.deadlines <- conn
+		}
+	}
+}
+
+// Ensures that at least one frame is being sent at the tuned interval with a
+// jitter tolerance of 1s
+func (me *Connection) heartbeater(interval time.Duration, done chan *Error) {
+	const maxServerHeartbeatsInFlight = 3
+
+	var sendTicks <-chan time.Time
+	if interval > 0 {
+		ticker := time.NewTicker(interval)
+		defer ticker.Stop()
+		sendTicks = ticker.C
+	}
+
+	lastSent := time.Now()
+
+	for {
+		select {
+		case at, stillSending := <-me.sends:
+			// When actively sending, depend on sent frames to reset server timer
+			if stillSending {
+				lastSent = at
+			} else {
+				return
+			}
+
+		case at := <-sendTicks:
+			// When idle, fill the space with a heartbeat frame
+			if at.Sub(lastSent) > interval-time.Second {
+				if err := me.send(&heartbeatFrame{}); err != nil {
+					// send heartbeats even after close/closeOk so we
+					// tick until the connection starts erroring
+					return
+				}
+			}
+
+		case conn := <-me.deadlines:
+			// When reading, reset our side of the deadline, if we've negotiated one with
+			// a deadline that covers at least 2 server heartbeats
+			if interval > 0 {
+				conn.SetReadDeadline(time.Now().Add(maxServerHeartbeatsInFlight * interval))
+			}
+
+		case <-done:
+			return
+		}
+	}
+}
+
+// Convenience method to inspect the Connection.Properties["capabilities"]
+// Table for server identified capabilities like "basic.ack" or
+// "confirm.select".
+func (me *Connection) isCapable(featureName string) bool {
+	capabilities, _ := me.Properties["capabilities"].(Table)
+	hasFeature, _ := capabilities[featureName].(bool)
+	return hasFeature
+}
+
+// allocateChannel records but does not open a new channel with a unique id.
+// This method is the initial part of the channel lifecycle and paired with
+// releaseChannel
+func (me *Connection) allocateChannel() (*Channel, error) {
+	me.m.Lock()
+	defer me.m.Unlock()
+
+	id, ok := me.allocator.next()
+	if !ok {
+		return nil, ErrChannelMax
+	}
+
+	ch := newChannel(me, uint16(id))
+	me.channels[uint16(id)] = ch
+
+	return ch, nil
+}
+
+// releaseChannel removes a channel from the registry as the final part of the
+// channel lifecycle
+func (me *Connection) releaseChannel(id uint16) {
+	me.m.Lock()
+	defer me.m.Unlock()
+
+	delete(me.channels, id)
+	me.allocator.release(int(id))
+}
+
+// openChannel allocates and opens a channel, must be paired with closeChannel
+func (me *Connection) openChannel() (*Channel, error) {
+	ch, err := me.allocateChannel()
+	if err != nil {
+		return nil, err
+	}
+
+	if err := ch.open(); err != nil {
+		return nil, err
+	}
+	return ch, nil
+}
+
+// closeChannel releases and initiates a shutdown of the channel.  All channel
+// closures should be initiated here for proper channel lifecycle management on
+// this connection.
+func (me *Connection) closeChannel(ch *Channel, e *Error) {
+	ch.shutdown(e)
+	me.releaseChannel(ch.id)
+}
+
+/*
+Channel opens a unique, concurrent server channel to process the bulk of AMQP
+messages.  Any error from methods on this receiver will render the receiver
+invalid and a new Channel should be opened.
+
+*/
+func (me *Connection) Channel() (*Channel, error) {
+	return me.openChannel()
+}
+
+func (me *Connection) call(req message, res ...message) error {
+	// Special case for when the protocol header frame is sent insted of a
+	// request method
+	if req != nil {
+		if err := me.send(&methodFrame{ChannelId: 0, Method: req}); err != nil {
+			return err
+		}
+	}
+
+	select {
+	case err := <-me.errors:
+		return err
+
+	case msg := <-me.rpc:
+		// Try to match one of the result types
+		for _, try := range res {
+			if reflect.TypeOf(msg) == reflect.TypeOf(try) {
+				// *res = *msg
+				vres := reflect.ValueOf(try).Elem()
+				vmsg := reflect.ValueOf(msg).Elem()
+				vres.Set(vmsg)
+				return nil
+			}
+		}
+		return ErrCommandInvalid
+	}
+
+	panic("unreachable")
+}
+
+//    Connection          = open-Connection *use-Connection close-Connection
+//    open-Connection     = C:protocol-header
+//                          S:START C:START-OK
+//                          *challenge
+//                          S:TUNE C:TUNE-OK
+//                          C:OPEN S:OPEN-OK
+//    challenge           = S:SECURE C:SECURE-OK
+//    use-Connection      = *channel
+//    close-Connection    = C:CLOSE S:CLOSE-OK
+//                        / S:CLOSE C:CLOSE-OK
+func (me *Connection) open(config Config) error {
+	if err := me.send(&protocolHeader{}); err != nil {
+		return err
+	}
+
+	return me.openStart(config)
+}
+
+func (me *Connection) openStart(config Config) error {
+	start := &connectionStart{}
+
+	if err := me.call(nil, start); err != nil {
+		return err
+	}
+
+	me.Major = int(start.VersionMajor)
+	me.Minor = int(start.VersionMinor)
+	me.Properties = Table(start.ServerProperties)
+
+	// eventually support challenge/response here by also responding to
+	// connectionSecure.
+	auth, ok := pickSASLMechanism(config.SASL, strings.Split(start.Mechanisms, " "))
+	if !ok {
+		return ErrSASL
+	}
+
+	// Save this mechanism off as the one we chose
+	me.Config.SASL = []Authentication{auth}
+
+	return me.openTune(config, auth)
+}
+
+func (me *Connection) openTune(config Config, auth Authentication) error {
+	if len(config.Properties) == 0 {
+		config.Properties = Table{
+			"product": defaultProduct,
+			"version": defaultVersion,
+		}
+	}
+
+	config.Properties["capabilities"] = Table{
+		"connection.blocked":     true,
+		"consumer_cancel_notify": true,
+	}
+
+	ok := &connectionStartOk{
+		Mechanism:        auth.Mechanism(),
+		Response:         auth.Response(),
+		ClientProperties: config.Properties,
+	}
+	tune := &connectionTune{}
+
+	if err := me.call(ok, tune); err != nil {
+		// per spec, a connection can only be closed when it has been opened
+		// so at this point, we know it's an auth error, but the socket
+		// was closed instead.  Return a meaningful error.
+		return ErrCredentials
+	}
+
+	// When the server and client both use default 0, then the max channel is
+	// only limited by uint16.
+	me.Config.ChannelMax = pick(config.ChannelMax, int(tune.ChannelMax))
+	if me.Config.ChannelMax == 0 {
+		me.Config.ChannelMax = defaultChannelMax
+	}
+	me.Config.ChannelMax = min(me.Config.ChannelMax, maxChannelMax)
+
+	// Frame size includes headers and end byte (len(payload)+8), even if
+	// this is less than FrameMinSize, use what the server sends because the
+	// alternative is to stop the handshake here.
+	me.Config.FrameSize = pick(config.FrameSize, int(tune.FrameMax))
+
+	// Save this off for resetDeadline()
+	me.Config.Heartbeat = time.Second * time.Duration(pick(
+		int(config.Heartbeat/time.Second),
+		int(tune.Heartbeat)))
+
+	// "The client should start sending heartbeats after receiving a
+	// Connection.Tune method"
+	go me.heartbeater(me.Config.Heartbeat, me.NotifyClose(make(chan *Error, 1)))
+
+	if err := me.send(&methodFrame{
+		ChannelId: 0,
+		Method: &connectionTuneOk{
+			ChannelMax: uint16(me.Config.ChannelMax),
+			FrameMax:   uint32(me.Config.FrameSize),
+			Heartbeat:  uint16(me.Config.Heartbeat / time.Second),
+		},
+	}); err != nil {
+		return err
+	}
+
+	return me.openVhost(config)
+}
+
+func (me *Connection) openVhost(config Config) error {
+	req := &connectionOpen{VirtualHost: config.Vhost}
+	res := &connectionOpenOk{}
+
+	if err := me.call(req, res); err != nil {
+		// Cannot be closed yet, but we know it's a vhost problem
+		return ErrVhost
+	}
+
+	me.Config.Vhost = config.Vhost
+
+	return me.openComplete()
+}
+
+// openComplete performs any final Connection initialization dependent on the
+// connection handshake.
+func (me *Connection) openComplete() error {
+	me.allocator = newAllocator(1, me.Config.ChannelMax)
+	return nil
+}
+
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func pick(client, server int) int {
+	if client == 0 || server == 0 {
+		return max(client, server)
+	}
+	return min(client, server)
+}

vendor/github.com/streadway/amqp/consumers.go

@@ -0,0 +1,118 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"fmt"
+	"os"
+	"sync"
+	"sync/atomic"
+)
+
+var consumerSeq uint64
+
+func uniqueConsumerTag() string {
+	return fmt.Sprintf("ctag-%s-%d", os.Args[0], atomic.AddUint64(&consumerSeq, 1))
+}
+
+type consumerBuffers map[string]chan *Delivery
+
+// Concurrent type that manages the consumerTag ->
+// ingress consumerBuffer mapping
+type consumers struct {
+	sync.Mutex
+	chans consumerBuffers
+}
+
+func makeConsumers() *consumers {
+	return &consumers{chans: make(consumerBuffers)}
+}
+
+func bufferDeliveries(in chan *Delivery, out chan Delivery) {
+	var queue []*Delivery
+	var queueIn = in
+
+	for delivery := range in {
+		select {
+		case out <- *delivery:
+			// delivered immediately while the consumer chan can receive
+		default:
+			queue = append(queue, delivery)
+		}
+
+		for len(queue) > 0 {
+			select {
+			case out <- *queue[0]:
+				queue = queue[1:]
+			case delivery, open := <-queueIn:
+				if open {
+					queue = append(queue, delivery)
+				} else {
+					// stop receiving to drain the queue
+					queueIn = nil
+				}
+			}
+		}
+	}
+
+	close(out)
+}
+
+// On key conflict, close the previous channel.
+func (me *consumers) add(tag string, consumer chan Delivery) {
+	me.Lock()
+	defer me.Unlock()
+
+	if prev, found := me.chans[tag]; found {
+		close(prev)
+	}
+
+	in := make(chan *Delivery)
+	go bufferDeliveries(in, consumer)
+
+	me.chans[tag] = in
+}
+
+func (me *consumers) close(tag string) (found bool) {
+	me.Lock()
+	defer me.Unlock()
+
+	ch, found := me.chans[tag]
+
+	if found {
+		delete(me.chans, tag)
+		close(ch)
+	}
+
+	return found
+}
+
+func (me *consumers) closeAll() {
+	me.Lock()
+	defer me.Unlock()
+
+	for _, ch := range me.chans {
+		close(ch)
+	}
+
+	me.chans = make(consumerBuffers)
+}
+
+// Sends a delivery to a the consumer identified by `tag`.
+// If unbuffered channels are used for Consume this method
+// could block all deliveries until the consumer
+// receives on the other end of the channel.
+func (me *consumers) send(tag string, msg *Delivery) bool {
+	me.Lock()
+	defer me.Unlock()
+
+	buffer, found := me.chans[tag]
+	if found {
+		buffer <- msg
+	}
+
+	return found
+}

vendor/github.com/streadway/amqp/delivery.go

@@ -0,0 +1,173 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"errors"
+	"time"
+)
+
+var errDeliveryNotInitialized = errors.New("delivery not initialized")
+
+// Acknowledger notifies the server of successful or failed consumption of
+// delivieries via identifier found in the Delivery.DeliveryTag field.
+//
+// Applications can provide mock implementations in tests of Delivery handlers.
+type Acknowledger interface {
+	Ack(tag uint64, multiple bool) error
+	Nack(tag uint64, multiple bool, requeue bool) error
+	Reject(tag uint64, requeue bool) error
+}
+
+// Delivery captures the fields for a previously delivered message resident in
+// a queue to be delivered by the server to a consumer from Channel.Consume or
+// Channel.Get.
+type Delivery struct {
+	Acknowledger Acknowledger // the channel from which this delivery arrived
+
+	Headers Table // Application or header exchange table
+
+	// Properties
+	ContentType     string    // MIME content type
+	ContentEncoding string    // MIME content encoding
+	DeliveryMode    uint8     // queue implemention use - non-persistent (1) or persistent (2)
+	Priority        uint8     // queue implementation use - 0 to 9
+	CorrelationId   string    // application use - correlation identifier
+	ReplyTo         string    // application use - address to to reply to (ex: RPC)
+	Expiration      string    // implementation use - message expiration spec
+	MessageId       string    // application use - message identifier
+	Timestamp       time.Time // application use - message timestamp
+	Type            string    // application use - message type name
+	UserId          string    // application use - creating user - should be authenticated user
+	AppId           string    // application use - creating application id
+
+	// Valid only with Channel.Consume
+	ConsumerTag string
+
+	// Valid only with Channel.Get
+	MessageCount uint32
+
+	DeliveryTag uint64
+	Redelivered bool
+	Exchange    string // basic.publish exhange
+	RoutingKey  string // basic.publish routing key
+
+	Body []byte
+}
+
+func newDelivery(channel *Channel, msg messageWithContent) *Delivery {
+	props, body := msg.getContent()
+
+	delivery := Delivery{
+		Acknowledger: channel,
+
+		Headers:         props.Headers,
+		ContentType:     props.ContentType,
+		ContentEncoding: props.ContentEncoding,
+		DeliveryMode:    props.DeliveryMode,
+		Priority:        props.Priority,
+		CorrelationId:   props.CorrelationId,
+		ReplyTo:         props.ReplyTo,
+		Expiration:      props.Expiration,
+		MessageId:       props.MessageId,
+		Timestamp:       props.Timestamp,
+		Type:            props.Type,
+		UserId:          props.UserId,
+		AppId:           props.AppId,
+
+		Body: body,
+	}
+
+	// Properties for the delivery types
+	switch m := msg.(type) {
+	case *basicDeliver:
+		delivery.ConsumerTag = m.ConsumerTag
+		delivery.DeliveryTag = m.DeliveryTag
+		delivery.Redelivered = m.Redelivered
+		delivery.Exchange = m.Exchange
+		delivery.RoutingKey = m.RoutingKey
+
+	case *basicGetOk:
+		delivery.MessageCount = m.MessageCount
+		delivery.DeliveryTag = m.DeliveryTag
+		delivery.Redelivered = m.Redelivered
+		delivery.Exchange = m.Exchange
+		delivery.RoutingKey = m.RoutingKey
+	}
+
+	return &delivery
+}
+
+/*
+Ack delegates an acknowledgement through the Acknowledger interface that the
+client or server has finished work on a delivery.
+
+All deliveries in AMQP must be acknowledged.  If you called Channel.Consume
+with autoAck true then the server will be automatically ack each message and
+this method should not be called.  Otherwise, you must call Delivery.Ack after
+you have successfully processed this delivery.
+
+When multiple is true, this delivery and all prior unacknowledged deliveries
+on the same channel will be acknowledged.  This is useful for batch processing
+of deliveries.
+
+An error will indicate that the acknowledge could not be delivered to the
+channel it was sent from.
+
+Either Delivery.Ack, Delivery.Reject or Delivery.Nack must be called for every
+delivery that is not automatically acknowledged.
+*/
+func (me Delivery) Ack(multiple bool) error {
+	if me.Acknowledger == nil {
+		return errDeliveryNotInitialized
+	}
+	return me.Acknowledger.Ack(me.DeliveryTag, multiple)
+}
+
+/*
+Reject delegates a negatively acknowledgement through the Acknowledger interface.
+
+When requeue is true, queue this message to be delivered to a consumer on a
+different channel.  When requeue is false or the server is unable to queue this
+message, it will be dropped.
+
+If you are batch processing deliveries, and your server supports it, prefer
+Delivery.Nack.
+
+Either Delivery.Ack, Delivery.Reject or Delivery.Nack must be called for every
+delivery that is not automatically acknowledged.
+*/
+func (me Delivery) Reject(requeue bool) error {
+	if me.Acknowledger == nil {
+		return errDeliveryNotInitialized
+	}
+	return me.Acknowledger.Reject(me.DeliveryTag, requeue)
+}
+
+/*
+Nack negatively acknowledge the delivery of message(s) identified by the
+delivery tag from either the client or server.
+
+When multiple is true, nack messages up to and including delivered messages up
+until the delivery tag delivered on the same channel.
+
+When requeue is true, request the server to deliver this message to a different
+consumer.  If it is not possible or requeue is false, the message will be
+dropped or delivered to a server configured dead-letter queue.
+
+This method must not be used to select or requeue messages the client wishes
+not to handle, rather it is to inform the server that the client is incapable
+of handling this message at this time.
+
+Either Delivery.Ack, Delivery.Reject or Delivery.Nack must be called for every
+delivery that is not automatically acknowledged.
+*/
+func (me Delivery) Nack(multiple, requeue bool) error {
+	if me.Acknowledger == nil {
+		return errDeliveryNotInitialized
+	}
+	return me.Acknowledger.Nack(me.DeliveryTag, multiple, requeue)
+}

vendor/github.com/streadway/amqp/doc.go

@@ -0,0 +1,108 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+/*
+AMQP 0.9.1 client with RabbitMQ extensions
+
+Understand the AMQP 0.9.1 messaging model by reviewing these links first. Much
+of the terminology in this library directly relates to AMQP concepts.
+
+  Resources
+
+  http://www.rabbitmq.com/tutorials/amqp-concepts.html
+  http://www.rabbitmq.com/getstarted.html
+  http://www.rabbitmq.com/amqp-0-9-1-reference.html
+
+Design
+
+Most other broker clients publish to queues, but in AMQP, clients publish
+Exchanges instead.  AMQP is programmable, meaning that both the producers and
+consumers agree on the configuration of the broker, instead requiring an
+operator or system configuration that declares the logical topology in the
+broker.  The routing between producers and consumer queues is via Bindings.
+These bindings form the logical topology of the broker.
+
+In this library, a message sent from publisher is called a "Publishing" and a
+message received to a consumer is called a "Delivery".  The fields of
+Publishings and Deliveries are close but not exact mappings to the underlying
+wire format to maintain stronger types.  Many other libraries will combine
+message properties with message headers.  In this library, the message well
+known properties are strongly typed fields on the Publishings and Deliveries,
+whereas the user defined headers are in the Headers field.
+
+The method naming closely matches the protocol's method name with positional
+parameters mapping to named protocol message fields.  The motivation here is to
+present a comprehensive view over all possible interactions with the server.
+
+Generally, methods that map to protocol methods of the "basic" class will be
+elided in this interface, and "select" methods of various channel mode selectors
+will be elided for example Channel.Confirm and Channel.Tx.
+
+The library is intentionally designed to be synchronous, where responses for
+each protocol message are required to be received in an RPC manner.  Some
+methods have a noWait parameter like Channel.QueueDeclare, and some methods are
+asynchronous like Channel.Publish.  The error values should still be checked for
+these methods as they will indicate IO failures like when the underlying
+connection closes.
+
+Asynchronous Events
+
+Clients of this library may be interested in receiving some of the protocol
+messages other than Deliveries like basic.ack methods while a channel is in
+confirm mode.
+
+The Notify* methods with Connection and Channel receivers model the pattern of
+asynchronous events like closes due to exceptions, or messages that are sent out
+of band from an RPC call like basic.ack or basic.flow.
+
+Any asynchronous events, including Deliveries and Publishings must always have
+a receiver until the corresponding chans are closed.  Without asynchronous
+receivers, the sychronous methods will block.
+
+Use Case
+
+It's important as a client to an AMQP topology to ensure the state of the
+broker matches your expectations.  For both publish and consume use cases,
+make sure you declare the queues, exchanges and bindings you expect to exist
+prior to calling Channel.Publish or Channel.Consume.
+
+  // Connections start with amqp.Dial() typically from a command line argument
+  // or environment variable.
+  connection, err := amqp.Dial(os.Getenv("AMQP_URL"))
+
+  // To cleanly shutdown by flushing kernel buffers, make sure to close and
+  // wait for the response.
+  defer connection.Close()
+
+  // Most operations happen on a channel.  If any error is returned on a
+  // channel, the channel will no longer be valid, throw it away and try with
+  // a different channel.  If you use many channels, it's useful for the
+  // server to
+  channel, err := connection.Channel()
+
+  // Declare your topology here, if it doesn't exist, it will be created, if
+  // it existed already and is not what you expect, then that's considered an
+  // error.
+
+  // Use your connection on this topology with either Publish or Consume, or
+  // inspect your queues with QueueInspect.  It's unwise to mix Publish and
+  // Consume to let TCP do its job well.
+
+SSL/TLS - Secure connections
+
+When Dial encounters an amqps:// scheme, it will use the zero value of a
+tls.Config.  This will only perform server certificate and host verification.
+
+Use DialTLS when you wish to provide a client certificate (recommended),
+include a private certificate authority's certificate in the cert chain for
+server validity, or run insecure by not verifying the server certificate dial
+your own connection.  DialTLS will use the provided tls.Config when it
+encounters an amqps:// scheme and will dial a plain connection when it
+encounters an amqp:// scheme.
+
+SSL/TLS in RabbitMQ is documented here: http://www.rabbitmq.com/ssl.html
+
+*/
+package amqp

vendor/github.com/streadway/amqp/fuzz.go

@@ -0,0 +1,16 @@
+// +build gofuzz
+package amqp
+
+import "bytes"
+
+func Fuzz(data []byte) int {
+	r := reader{bytes.NewReader(data)}
+	frame, err := r.ReadFrame()
+	if err != nil {
+		if frame != nil {
+			panic("frame is not nil")
+		}
+		return 0
+	}
+	return 1
+}

vendor/github.com/streadway/amqp/gen.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+go run spec/gen.go < spec/amqp0-9-1.stripped.extended.xml | gofmt > spec091.go

vendor/github.com/streadway/amqp/read.go

@@ -0,0 +1,447 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"io"
+	"time"
+)
+
+/*
+Reads a frame from an input stream and returns an interface that can be cast into
+one of the following:
+
+   methodFrame
+   PropertiesFrame
+   bodyFrame
+   heartbeatFrame
+
+2.3.5  frame Details
+
+All frames consist of a header (7 octets), a payload of arbitrary size, and a
+'frame-end' octet that detects malformed frames:
+
+  0      1         3             7                  size+7 size+8
+  +------+---------+-------------+  +------------+  +-----------+
+  | type | channel |     size    |  |  payload   |  | frame-end |
+  +------+---------+-------------+  +------------+  +-----------+
+   octet   short         long         size octets       octet
+
+To read a frame, we:
+  1. Read the header and check the frame type and channel.
+	2. Depending on the frame type, we read the payload and process it.
+  3. Read the frame end octet.
+
+In realistic implementations where performance is a concern, we would use
+“read-ahead buffering” or
+
+“gathering reads” to avoid doing three separate system calls to read a frame.
+*/
+func (me *reader) ReadFrame() (frame frame, err error) {
+	var scratch [7]byte
+
+	if _, err = io.ReadFull(me.r, scratch[:7]); err != nil {
+		return
+	}
+
+	typ := uint8(scratch[0])
+	channel := binary.BigEndian.Uint16(scratch[1:3])
+	size := binary.BigEndian.Uint32(scratch[3:7])
+
+	switch typ {
+	case frameMethod:
+		if frame, err = me.parseMethodFrame(channel, size); err != nil {
+			return
+		}
+
+	case frameHeader:
+		if frame, err = me.parseHeaderFrame(channel, size); err != nil {
+			return
+		}
+
+	case frameBody:
+		if frame, err = me.parseBodyFrame(channel, size); err != nil {
+			return nil, err
+		}
+
+	case frameHeartbeat:
+		if frame, err = me.parseHeartbeatFrame(channel, size); err != nil {
+			return
+		}
+
+	default:
+		return nil, ErrFrame
+	}
+
+	if _, err = io.ReadFull(me.r, scratch[:1]); err != nil {
+		return nil, err
+	}
+
+	if scratch[0] != frameEnd {
+		return nil, ErrFrame
+	}
+
+	return
+}
+
+func readShortstr(r io.Reader) (v string, err error) {
+	var length uint8
+	if err = binary.Read(r, binary.BigEndian, &length); err != nil {
+		return
+	}
+
+	bytes := make([]byte, length)
+	if _, err = io.ReadFull(r, bytes); err != nil {
+		return
+	}
+	return string(bytes), nil
+}
+
+func readLongstr(r io.Reader) (v string, err error) {
+	var length uint32
+	if err = binary.Read(r, binary.BigEndian, &length); err != nil {
+		return
+	}
+
+	bytes := make([]byte, length)
+	if _, err = io.ReadFull(r, bytes); err != nil {
+		return
+	}
+	return string(bytes), nil
+}
+
+func readDecimal(r io.Reader) (v Decimal, err error) {
+	if err = binary.Read(r, binary.BigEndian, &v.Scale); err != nil {
+		return
+	}
+	if err = binary.Read(r, binary.BigEndian, &v.Value); err != nil {
+		return
+	}
+	return
+}
+
+func readFloat32(r io.Reader) (v float32, err error) {
+	if err = binary.Read(r, binary.BigEndian, &v); err != nil {
+		return
+	}
+	return
+}
+
+func readFloat64(r io.Reader) (v float64, err error) {
+	if err = binary.Read(r, binary.BigEndian, &v); err != nil {
+		return
+	}
+	return
+}
+
+func readTimestamp(r io.Reader) (v time.Time, err error) {
+	var sec int64
+	if err = binary.Read(r, binary.BigEndian, &sec); err != nil {
+		return
+	}
+	return time.Unix(sec, 0), nil
+}
+
+/*
+'A': []interface{}
+'D': Decimal
+'F': Table
+'I': int32
+'S': string
+'T': time.Time
+'V': nil
+'b': byte
+'d': float64
+'f': float32
+'l': int64
+'s': int16
+'t': bool
+'x': []byte
+*/
+func readField(r io.Reader) (v interface{}, err error) {
+	var typ byte
+	if err = binary.Read(r, binary.BigEndian, &typ); err != nil {
+		return
+	}
+
+	switch typ {
+	case 't':
+		var value uint8
+		if err = binary.Read(r, binary.BigEndian, &value); err != nil {
+			return
+		}
+		return (value != 0), nil
+
+	case 'b':
+		var value [1]byte
+		if _, err = io.ReadFull(r, value[0:1]); err != nil {
+			return
+		}
+		return value[0], nil
+
+	case 's':
+		var value int16
+		if err = binary.Read(r, binary.BigEndian, &value); err != nil {
+			return
+		}
+		return value, nil
+
+	case 'I':
+		var value int32
+		if err = binary.Read(r, binary.BigEndian, &value); err != nil {
+			return
+		}
+		return value, nil
+
+	case 'l':
+		var value int64
+		if err = binary.Read(r, binary.BigEndian, &value); err != nil {
+			return
+		}
+		return value, nil
+
+	case 'f':
+		var value float32
+		if err = binary.Read(r, binary.BigEndian, &value); err != nil {
+			return
+		}
+		return value, nil
+
+	case 'd':
+		var value float64
+		if err = binary.Read(r, binary.BigEndian, &value); err != nil {
+			return
+		}
+		return value, nil
+
+	case 'D':
+		return readDecimal(r)
+
+	case 'S':
+		return readLongstr(r)
+
+	case 'A':
+		return readArray(r)
+
+	case 'T':
+		return readTimestamp(r)
+
+	case 'F':
+		return readTable(r)
+
+	case 'x':
+		var len int32
+		if err = binary.Read(r, binary.BigEndian, &len); err != nil {
+			return nil, err
+		}
+
+		value := make([]byte, len)
+		if _, err = io.ReadFull(r, value); err != nil {
+			return nil, err
+		}
+		return value, err
+
+	case 'V':
+		return nil, nil
+	}
+
+	return nil, ErrSyntax
+}
+
+/*
+	Field tables are long strings that contain packed name-value pairs.  The
+	name-value pairs are encoded as short string defining the name, and octet
+	defining the values type and then the value itself.   The valid field types for
+	tables are an extension of the native integer, bit, string, and timestamp
+	types, and are shown in the grammar.  Multi-octet integer fields are always
+	held in network byte order.
+*/
+func readTable(r io.Reader) (table Table, err error) {
+	var nested bytes.Buffer
+	var str string
+
+	if str, err = readLongstr(r); err != nil {
+		return
+	}
+
+	nested.Write([]byte(str))
+
+	table = make(Table)
+
+	for nested.Len() > 0 {
+		var key string
+		var value interface{}
+
+		if key, err = readShortstr(&nested); err != nil {
+			return
+		}
+
+		if value, err = readField(&nested); err != nil {
+			return
+		}
+
+		table[key] = value
+	}
+
+	return
+}
+
+func readArray(r io.Reader) ([]interface{}, error) {
+	var size uint32
+	var err error
+
+	if err = binary.Read(r, binary.BigEndian, &size); err != nil {
+		return nil, err
+	}
+
+	lim := &io.LimitedReader{R: r, N: int64(size)}
+	arr := make([]interface{}, 0)
+	var field interface{}
+
+	for {
+		if field, err = readField(lim); err != nil {
+			if err == io.EOF {
+				break
+			}
+			return nil, err
+		}
+		arr = append(arr, field)
+	}
+
+	return arr, nil
+}
+
+// Checks if this bit mask matches the flags bitset
+func hasProperty(mask uint16, prop int) bool {
+	return int(mask)&prop > 0
+}
+
+func (me *reader) parseHeaderFrame(channel uint16, size uint32) (frame frame, err error) {
+	hf := &headerFrame{
+		ChannelId: channel,
+	}
+
+	if err = binary.Read(me.r, binary.BigEndian, &hf.ClassId); err != nil {
+		return
+	}
+
+	if err = binary.Read(me.r, binary.BigEndian, &hf.weight); err != nil {
+		return
+	}
+
+	if err = binary.Read(me.r, binary.BigEndian, &hf.Size); err != nil {
+		return
+	}
+
+	var flags uint16
+
+	if err = binary.Read(me.r, binary.BigEndian, &flags); err != nil {
+		return
+	}
+
+	if hasProperty(flags, flagContentType) {
+		if hf.Properties.ContentType, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagContentEncoding) {
+		if hf.Properties.ContentEncoding, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagHeaders) {
+		if hf.Properties.Headers, err = readTable(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagDeliveryMode) {
+		if err = binary.Read(me.r, binary.BigEndian, &hf.Properties.DeliveryMode); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagPriority) {
+		if err = binary.Read(me.r, binary.BigEndian, &hf.Properties.Priority); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagCorrelationId) {
+		if hf.Properties.CorrelationId, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagReplyTo) {
+		if hf.Properties.ReplyTo, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagExpiration) {
+		if hf.Properties.Expiration, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagMessageId) {
+		if hf.Properties.MessageId, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagTimestamp) {
+		if hf.Properties.Timestamp, err = readTimestamp(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagType) {
+		if hf.Properties.Type, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagUserId) {
+		if hf.Properties.UserId, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagAppId) {
+		if hf.Properties.AppId, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+	if hasProperty(flags, flagReserved1) {
+		if hf.Properties.reserved1, err = readShortstr(me.r); err != nil {
+			return
+		}
+	}
+
+	return hf, nil
+}
+
+func (me *reader) parseBodyFrame(channel uint16, size uint32) (frame frame, err error) {
+	bf := &bodyFrame{
+		ChannelId: channel,
+		Body:      make([]byte, size),
+	}
+
+	if _, err = io.ReadFull(me.r, bf.Body); err != nil {
+		return nil, err
+	}
+
+	return bf, nil
+}
+
+var errHeartbeatPayload = errors.New("Heartbeats should not have a payload")
+
+func (me *reader) parseHeartbeatFrame(channel uint16, size uint32) (frame frame, err error) {
+	hf := &heartbeatFrame{
+		ChannelId: channel,
+	}
+
+	if size > 0 {
+		return nil, errHeartbeatPayload
+	}
+
+	return hf, nil
+}

vendor/github.com/streadway/amqp/return.go

@@ -0,0 +1,64 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"time"
+)
+
+// Return captures a flattened struct of fields returned by the server when a
+// Publishing is unable to be delivered either due to the `mandatory` flag set
+// and no route found, or `immediate` flag set and no free consumer.
+type Return struct {
+	ReplyCode  uint16 // reason
+	ReplyText  string // description
+	Exchange   string // basic.publish exchange
+	RoutingKey string // basic.publish routing key
+
+	// Properties
+	ContentType     string    // MIME content type
+	ContentEncoding string    // MIME content encoding
+	Headers         Table     // Application or header exchange table
+	DeliveryMode    uint8     // queue implemention use - non-persistent (1) or persistent (2)
+	Priority        uint8     // queue implementation use - 0 to 9
+	CorrelationId   string    // application use - correlation identifier
+	ReplyTo         string    // application use - address to to reply to (ex: RPC)
+	Expiration      string    // implementation use - message expiration spec
+	MessageId       string    // application use - message identifier
+	Timestamp       time.Time // application use - message timestamp
+	Type            string    // application use - message type name
+	UserId          string    // application use - creating user id
+	AppId           string    // application use - creating application
+
+	Body []byte
+}
+
+func newReturn(msg basicReturn) *Return {
+	props, body := msg.getContent()
+
+	return &Return{
+		ReplyCode:  msg.ReplyCode,
+		ReplyText:  msg.ReplyText,
+		Exchange:   msg.Exchange,
+		RoutingKey: msg.RoutingKey,
+
+		Headers:         props.Headers,
+		ContentType:     props.ContentType,
+		ContentEncoding: props.ContentEncoding,
+		DeliveryMode:    props.DeliveryMode,
+		Priority:        props.Priority,
+		CorrelationId:   props.CorrelationId,
+		ReplyTo:         props.ReplyTo,
+		Expiration:      props.Expiration,
+		MessageId:       props.MessageId,
+		Timestamp:       props.Timestamp,
+		Type:            props.Type,
+		UserId:          props.UserId,
+		AppId:           props.AppId,
+
+		Body: body,
+	}
+}

vendor/github.com/streadway/amqp/types.go

@@ -0,0 +1,390 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"fmt"
+	"io"
+	"time"
+)
+
+var (
+	// Errors that this library could return/emit from a channel or connection
+	ErrClosed          = &Error{Code: ChannelError, Reason: "channel/connection is not open"}
+	ErrChannelMax      = &Error{Code: ChannelError, Reason: "channel id space exhausted"}
+	ErrSASL            = &Error{Code: AccessRefused, Reason: "SASL could not negotiate a shared mechanism"}
+	ErrCredentials     = &Error{Code: AccessRefused, Reason: "username or password not allowed"}
+	ErrVhost           = &Error{Code: AccessRefused, Reason: "no access to this vhost"}
+	ErrSyntax          = &Error{Code: SyntaxError, Reason: "invalid field or value inside of a frame"}
+	ErrFrame           = &Error{Code: FrameError, Reason: "frame could not be parsed"}
+	ErrCommandInvalid  = &Error{Code: CommandInvalid, Reason: "unexpected command received"}
+	ErrUnexpectedFrame = &Error{Code: UnexpectedFrame, Reason: "unexpected frame received"}
+	ErrFieldType       = &Error{Code: SyntaxError, Reason: "unsupported table field type"}
+)
+
+// Error captures the code and reason a channel or connection has been closed
+// by the server.
+type Error struct {
+	Code    int    // constant code from the specification
+	Reason  string // description of the error
+	Server  bool   // true when initiated from the server, false when from this library
+	Recover bool   // true when this error can be recovered by retrying later or with differnet parameters
+}
+
+func newError(code uint16, text string) *Error {
+	return &Error{
+		Code:    int(code),
+		Reason:  text,
+		Recover: isSoftExceptionCode(int(code)),
+		Server:  true,
+	}
+}
+
+func (me Error) Error() string {
+	return fmt.Sprintf("Exception (%d) Reason: %q", me.Code, me.Reason)
+}
+
+// Used by header frames to capture routing and header information
+type properties struct {
+	ContentType     string    // MIME content type
+	ContentEncoding string    // MIME content encoding
+	Headers         Table     // Application or header exchange table
+	DeliveryMode    uint8     // queue implemention use - Transient (1) or Persistent (2)
+	Priority        uint8     // queue implementation use - 0 to 9
+	CorrelationId   string    // application use - correlation identifier
+	ReplyTo         string    // application use - address to to reply to (ex: RPC)
+	Expiration      string    // implementation use - message expiration spec
+	MessageId       string    // application use - message identifier
+	Timestamp       time.Time // application use - message timestamp
+	Type            string    // application use - message type name
+	UserId          string    // application use - creating user id
+	AppId           string    // application use - creating application
+	reserved1       string    // was cluster-id - process for buffer consumption
+}
+
+// DeliveryMode.  Transient means higher throughput but messages will not be
+// restored on broker restart.  The delivery mode of publishings is unrelated
+// to the durability of the queues they reside on.  Transient messages will
+// not be restored to durable queues, persistent messages will be restored to
+// durable queues and lost on non-durable queues during server restart.
+//
+// This remains typed as uint8 to match Publishing.DeliveryMode.  Other
+// delivery modes specific to custom queue implementations are not enumerated
+// here.
+const (
+	Transient  uint8 = 1
+	Persistent uint8 = 2
+)
+
+// The property flags are an array of bits that indicate the presence or
+// absence of each property value in sequence.  The bits are ordered from most
+// high to low - bit 15 indicates the first property.
+const (
+	flagContentType     = 0x8000
+	flagContentEncoding = 0x4000
+	flagHeaders         = 0x2000
+	flagDeliveryMode    = 0x1000
+	flagPriority        = 0x0800
+	flagCorrelationId   = 0x0400
+	flagReplyTo         = 0x0200
+	flagExpiration      = 0x0100
+	flagMessageId       = 0x0080
+	flagTimestamp       = 0x0040
+	flagType            = 0x0020
+	flagUserId          = 0x0010
+	flagAppId           = 0x0008
+	flagReserved1       = 0x0004
+)
+
+// Queue captures the current server state of the queue on the server returned
+// from Channel.QueueDeclare or Channel.QueueInspect.
+type Queue struct {
+	Name      string // server confirmed or generated name
+	Messages  int    // count of messages not awaiting acknowledgment
+	Consumers int    // number of consumers receiving deliveries
+}
+
+// Publishing captures the client message sent to the server.  The fields
+// outside of the Headers table included in this struct mirror the underlying
+// fields in the content frame.  They use native types for convenience and
+// efficiency.
+type Publishing struct {
+	// Application or exchange specific fields,
+	// the headers exchange will inspect this field.
+	Headers Table
+
+	// Properties
+	ContentType     string    // MIME content type
+	ContentEncoding string    // MIME content encoding
+	DeliveryMode    uint8     // Transient (0 or 1) or Persistent (2)
+	Priority        uint8     // 0 to 9
+	CorrelationId   string    // correlation identifier
+	ReplyTo         string    // address to to reply to (ex: RPC)
+	Expiration      string    // message expiration spec
+	MessageId       string    // message identifier
+	Timestamp       time.Time // message timestamp
+	Type            string    // message type name
+	UserId          string    // creating user id - ex: "guest"
+	AppId           string    // creating application id
+
+	// The application specific payload of the message
+	Body []byte
+}
+
+// Blocking notifies the server's TCP flow control of the Connection.  When a
+// server hits a memory or disk alarm it will block all connections until the
+// resources are reclaimed.  Use NotifyBlock on the Connection to receive these
+// events.
+type Blocking struct {
+	Active bool   // TCP pushback active/inactive on server
+	Reason string // Server reason for activation
+}
+
+// Confirmation notifies the acknowledgment or negative acknowledgement of a
+// publishing identified by its delivery tag.  Use NotifyPublish on the Channel
+// to consume these events.
+type Confirmation struct {
+	DeliveryTag uint64 // A 1 based counter of publishings from when the channel was put in Confirm mode
+	Ack         bool   // True when the server succesfully received the publishing
+}
+
+// Decimal matches the AMQP decimal type.  Scale is the number of decimal
+// digits Scale == 2, Value == 12345, Decimal == 123.45
+type Decimal struct {
+	Scale uint8
+	Value int32
+}
+
+// Table stores user supplied fields of the following types:
+//
+//   bool
+//   byte
+//   float32
+//   float64
+//   int16
+//   int32
+//   int64
+//   nil
+//   string
+//   time.Time
+//   amqp.Decimal
+//   amqp.Table
+//   []byte
+//   []interface{} - containing above types
+//
+// Functions taking a table will immediately fail when the table contains a
+// value of an unsupported type.
+//
+// The caller must be specific in which precision of integer it wishes to
+// encode.
+//
+// Use a type assertion when reading values from a table for type converstion.
+//
+// RabbitMQ expects int32 for integer values.
+//
+type Table map[string]interface{}
+
+func validateField(f interface{}) error {
+	switch fv := f.(type) {
+	case nil, bool, byte, int16, int32, int64, float32, float64, string, []byte, Decimal, time.Time:
+		return nil
+
+	case []interface{}:
+		for _, v := range fv {
+			if err := validateField(v); err != nil {
+				return fmt.Errorf("in array %s", err)
+			}
+		}
+		return nil
+
+	case Table:
+		for k, v := range fv {
+			if err := validateField(v); err != nil {
+				return fmt.Errorf("table field %q %s", k, err)
+			}
+		}
+		return nil
+	}
+
+	return fmt.Errorf("value %t not supported", f)
+}
+
+func (t Table) Validate() error {
+	return validateField(t)
+}
+
+// Heap interface for maintaining delivery tags
+type tagSet []uint64
+
+func (me tagSet) Len() int              { return len(me) }
+func (me tagSet) Less(i, j int) bool    { return (me)[i] < (me)[j] }
+func (me tagSet) Swap(i, j int)         { (me)[i], (me)[j] = (me)[j], (me)[i] }
+func (me *tagSet) Push(tag interface{}) { *me = append(*me, tag.(uint64)) }
+func (me *tagSet) Pop() interface{} {
+	val := (*me)[len(*me)-1]
+	*me = (*me)[:len(*me)-1]
+	return val
+}
+
+type message interface {
+	id() (uint16, uint16)
+	wait() bool
+	read(io.Reader) error
+	write(io.Writer) error
+}
+
+type messageWithContent interface {
+	message
+	getContent() (properties, []byte)
+	setContent(properties, []byte)
+}
+
+/*
+The base interface implemented as:
+
+2.3.5  frame Details
+
+All frames consist of a header (7 octets), a payload of arbitrary size, and a 'frame-end' octet that detects
+malformed frames:
+
+  0      1         3             7                  size+7 size+8
+  +------+---------+-------------+  +------------+  +-----------+
+  | type | channel |     size    |  |  payload   |  | frame-end |
+  +------+---------+-------------+  +------------+  +-----------+
+   octet   short         long         size octets       octet
+
+To read a frame, we:
+
+ 1. Read the header and check the frame type and channel.
+ 2. Depending on the frame type, we read the payload and process it.
+ 3. Read the frame end octet.
+
+In realistic implementations where performance is a concern, we would use
+“read-ahead buffering” or “gathering reads” to avoid doing three separate
+system calls to read a frame.
+
+*/
+type frame interface {
+	write(io.Writer) error
+	channel() uint16
+}
+
+type reader struct {
+	r io.Reader
+}
+
+type writer struct {
+	w io.Writer
+}
+
+// Implements the frame interface for Connection RPC
+type protocolHeader struct{}
+
+func (protocolHeader) write(w io.Writer) error {
+	_, err := w.Write([]byte{'A', 'M', 'Q', 'P', 0, 0, 9, 1})
+	return err
+}
+
+func (protocolHeader) channel() uint16 {
+	panic("only valid as initial handshake")
+}
+
+/*
+Method frames carry the high-level protocol commands (which we call "methods").
+One method frame carries one command.  The method frame payload has this format:
+
+  0          2           4
+  +----------+-----------+-------------- - -
+  | class-id | method-id | arguments...
+  +----------+-----------+-------------- - -
+     short      short    ...
+
+To process a method frame, we:
+ 1. Read the method frame payload.
+ 2. Unpack it into a structure.  A given method always has the same structure,
+ so we can unpack the method rapidly.  3. Check that the method is allowed in
+ the current context.
+ 4. Check that the method arguments are valid.
+ 5. Execute the method.
+
+Method frame bodies are constructed as a list of AMQP data fields (bits,
+integers, strings and string tables).  The marshalling code is trivially
+generated directly from the protocol specifications, and can be very rapid.
+*/
+type methodFrame struct {
+	ChannelId uint16
+	ClassId   uint16
+	MethodId  uint16
+	Method    message
+}
+
+func (me *methodFrame) channel() uint16 { return me.ChannelId }
+
+/*
+Heartbeating is a technique designed to undo one of TCP/IP's features, namely
+its ability to recover from a broken physical connection by closing only after
+a quite long time-out.  In some scenarios we need to know very rapidly if a
+peer is disconnected or not responding for other reasons (e.g. it is looping).
+Since heartbeating can be done at a low level, we implement this as a special
+type of frame that peers exchange at the transport level, rather than as a
+class method.
+*/
+type heartbeatFrame struct {
+	ChannelId uint16
+}
+
+func (me *heartbeatFrame) channel() uint16 { return me.ChannelId }
+
+/*
+Certain methods (such as Basic.Publish, Basic.Deliver, etc.) are formally
+defined as carrying content.  When a peer sends such a method frame, it always
+follows it with a content header and zero or more content body frames.
+
+A content header frame has this format:
+
+    0          2        4           12               14
+    +----------+--------+-----------+----------------+------------- - -
+    | class-id | weight | body size | property flags | property list...
+    +----------+--------+-----------+----------------+------------- - -
+      short     short    long long       short        remainder...
+
+We place content body in distinct frames (rather than including it in the
+method) so that AMQP may support "zero copy" techniques in which content is
+never marshalled or encoded.  We place the content properties in their own
+frame so that recipients can selectively discard contents they do not want to
+process
+*/
+type headerFrame struct {
+	ChannelId  uint16
+	ClassId    uint16
+	weight     uint16
+	Size       uint64
+	Properties properties
+}
+
+func (me *headerFrame) channel() uint16 { return me.ChannelId }
+
+/*
+Content is the application data we carry from client-to-client via the AMQP
+server.  Content is, roughly speaking, a set of properties plus a binary data
+part.  The set of allowed properties are defined by the Basic class, and these
+form the "content header frame".  The data can be any size, and MAY be broken
+into several (or many) chunks, each forming a "content body frame".
+
+Looking at the frames for a specific channel, as they pass on the wire, we
+might see something like this:
+
+		[method]
+		[method] [header] [body] [body]
+		[method]
+		...
+*/
+type bodyFrame struct {
+	ChannelId uint16
+	Body      []byte
+}
+
+func (me *bodyFrame) channel() uint16 { return me.ChannelId }

vendor/github.com/streadway/amqp/uri.go

@@ -0,0 +1,170 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"errors"
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+var errURIScheme = errors.New("AMQP scheme must be either 'amqp://' or 'amqps://'")
+
+var schemePorts = map[string]int{
+	"amqp":  5672,
+	"amqps": 5671,
+}
+
+var defaultURI = URI{
+	Scheme:   "amqp",
+	Host:     "localhost",
+	Port:     5672,
+	Username: "guest",
+	Password: "guest",
+	Vhost:    "/",
+}
+
+// URI represents a parsed AMQP URI string.
+type URI struct {
+	Scheme   string
+	Host     string
+	Port     int
+	Username string
+	Password string
+	Vhost    string
+}
+
+// ParseURI attempts to parse the given AMQP URI according to the spec.
+// See http://www.rabbitmq.com/uri-spec.html.
+//
+// Default values for the fields are:
+//
+//   Scheme: amqp
+//   Host: localhost
+//   Port: 5672
+//   Username: guest
+//   Password: guest
+//   Vhost: /
+//
+func ParseURI(uri string) (URI, error) {
+	me := defaultURI
+
+	u, err := url.Parse(uri)
+	if err != nil {
+		return me, err
+	}
+
+	defaultPort, okScheme := schemePorts[u.Scheme]
+
+	if okScheme {
+		me.Scheme = u.Scheme
+	} else {
+		return me, errURIScheme
+	}
+
+	host, port := splitHostPort(u.Host)
+
+	if host != "" {
+		me.Host = host
+	}
+
+	if port != "" {
+		port32, err := strconv.ParseInt(port, 10, 32)
+		if err != nil {
+			return me, err
+		}
+		me.Port = int(port32)
+	} else {
+		me.Port = defaultPort
+	}
+
+	if u.User != nil {
+		me.Username = u.User.Username()
+		if password, ok := u.User.Password(); ok {
+			me.Password = password
+		}
+	}
+
+	if u.Path != "" {
+		if strings.HasPrefix(u.Path, "/") {
+			if u.Host == "" && strings.HasPrefix(u.Path, "///") {
+				// net/url doesn't handle local context authorities and leaves that up
+				// to the scheme handler.  In our case, we translate amqp:/// into the
+				// default host and whatever the vhost should be
+				if len(u.Path) > 3 {
+					me.Vhost = u.Path[3:]
+				}
+			} else if len(u.Path) > 1 {
+				me.Vhost = u.Path[1:]
+			}
+		} else {
+			me.Vhost = u.Path
+		}
+	}
+
+	return me, nil
+}
+
+// Splits host:port, host, [ho:st]:port, or [ho:st].  Unlike net.SplitHostPort
+// which splits :port, host:port or [host]:port
+//
+// Handles hosts that have colons that are in brackets like [::1]:http
+func splitHostPort(addr string) (host, port string) {
+	i := strings.LastIndex(addr, ":")
+
+	if i >= 0 {
+		host, port = addr[:i], addr[i+1:]
+
+		if len(port) > 0 && port[len(port)-1] == ']' && addr[0] == '[' {
+			// we've split on an inner colon, the port was missing outside of the
+			// brackets so use the full addr.  We could assert that host should not
+			// contain any colons here
+			host, port = addr, ""
+		}
+	} else {
+		host = addr
+	}
+
+	return
+}
+
+// PlainAuth returns a PlainAuth structure based on the parsed URI's
+// Username and Password fields.
+func (me URI) PlainAuth() *PlainAuth {
+	return &PlainAuth{
+		Username: me.Username,
+		Password: me.Password,
+	}
+}
+
+func (me URI) String() string {
+	var authority string
+
+	if me.Username != defaultURI.Username || me.Password != defaultURI.Password {
+		authority += me.Username
+
+		if me.Password != defaultURI.Password {
+			authority += ":" + me.Password
+		}
+
+		authority += "@"
+	}
+
+	authority += me.Host
+
+	if defaultPort, found := schemePorts[me.Scheme]; !found || defaultPort != me.Port {
+		authority += ":" + strconv.FormatInt(int64(me.Port), 10)
+	}
+
+	var vhost string
+	if me.Vhost != defaultURI.Vhost {
+		vhost = me.Vhost
+	}
+
+	return fmt.Sprintf("%s://%s/%s", me.Scheme, authority, url.QueryEscape(vhost))
+}

vendor/github.com/streadway/amqp/write.go

@@ -0,0 +1,411 @@
+// Copyright (c) 2012, Sean Treadway, SoundCloud Ltd.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+// Source code and contact info at http://github.com/streadway/amqp
+
+package amqp
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"io"
+	"math"
+	"time"
+)
+
+func (me *writer) WriteFrame(frame frame) (err error) {
+	if err = frame.write(me.w); err != nil {
+		return
+	}
+
+	if buf, ok := me.w.(*bufio.Writer); ok {
+		err = buf.Flush()
+	}
+
+	return
+}
+
+func (me *methodFrame) write(w io.Writer) (err error) {
+	var payload bytes.Buffer
+
+	if me.Method == nil {
+		return errors.New("malformed frame: missing method")
+	}
+
+	class, method := me.Method.id()
+
+	if err = binary.Write(&payload, binary.BigEndian, class); err != nil {
+		return
+	}
+
+	if err = binary.Write(&payload, binary.BigEndian, method); err != nil {
+		return
+	}
+
+	if err = me.Method.write(&payload); err != nil {
+		return
+	}
+
+	return writeFrame(w, frameMethod, me.ChannelId, payload.Bytes())
+}
+
+// Heartbeat
+//
+// Payload is empty
+func (me *heartbeatFrame) write(w io.Writer) (err error) {
+	return writeFrame(w, frameHeartbeat, me.ChannelId, []byte{})
+}
+
+// CONTENT HEADER
+// 0          2        4           12               14
+// +----------+--------+-----------+----------------+------------- - -
+// | class-id | weight | body size | property flags | property list...
+// +----------+--------+-----------+----------------+------------- - -
+//    short     short    long long       short        remainder...
+//
+func (me *headerFrame) write(w io.Writer) (err error) {
+	var payload bytes.Buffer
+	var zeroTime time.Time
+
+	if err = binary.Write(&payload, binary.BigEndian, me.ClassId); err != nil {
+		return
+	}
+
+	if err = binary.Write(&payload, binary.BigEndian, me.weight); err != nil {
+		return
+	}
+
+	if err = binary.Write(&payload, binary.BigEndian, me.Size); err != nil {
+		return
+	}
+
+	// First pass will build the mask to be serialized, second pass will serialize
+	// each of the fields that appear in the mask.
+
+	var mask uint16
+
+	if len(me.Properties.ContentType) > 0 {
+		mask = mask | flagContentType
+	}
+	if len(me.Properties.ContentEncoding) > 0 {
+		mask = mask | flagContentEncoding
+	}
+	if me.Properties.Headers != nil && len(me.Properties.Headers) > 0 {
+		mask = mask | flagHeaders
+	}
+	if me.Properties.DeliveryMode > 0 {
+		mask = mask | flagDeliveryMode
+	}
+	if me.Properties.Priority > 0 {
+		mask = mask | flagPriority
+	}
+	if len(me.Properties.CorrelationId) > 0 {
+		mask = mask | flagCorrelationId
+	}
+	if len(me.Properties.ReplyTo) > 0 {
+		mask = mask | flagReplyTo
+	}
+	if len(me.Properties.Expiration) > 0 {
+		mask = mask | flagExpiration
+	}
+	if len(me.Properties.MessageId) > 0 {
+		mask = mask | flagMessageId
+	}
+	if me.Properties.Timestamp != zeroTime {
+		mask = mask | flagTimestamp
+	}
+	if len(me.Properties.Type) > 0 {
+		mask = mask | flagType
+	}
+	if len(me.Properties.UserId) > 0 {
+		mask = mask | flagUserId
+	}
+	if len(me.Properties.AppId) > 0 {
+		mask = mask | flagAppId
+	}
+
+	if err = binary.Write(&payload, binary.BigEndian, mask); err != nil {
+		return
+	}
+
+	if hasProperty(mask, flagContentType) {
+		if err = writeShortstr(&payload, me.Properties.ContentType); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagContentEncoding) {
+		if err = writeShortstr(&payload, me.Properties.ContentEncoding); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagHeaders) {
+		if err = writeTable(&payload, me.Properties.Headers); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagDeliveryMode) {
+		if err = binary.Write(&payload, binary.BigEndian, me.Properties.DeliveryMode); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagPriority) {
+		if err = binary.Write(&payload, binary.BigEndian, me.Properties.Priority); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagCorrelationId) {
+		if err = writeShortstr(&payload, me.Properties.CorrelationId); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagReplyTo) {
+		if err = writeShortstr(&payload, me.Properties.ReplyTo); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagExpiration) {
+		if err = writeShortstr(&payload, me.Properties.Expiration); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagMessageId) {
+		if err = writeShortstr(&payload, me.Properties.MessageId); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagTimestamp) {
+		if err = binary.Write(&payload, binary.BigEndian, uint64(me.Properties.Timestamp.Unix())); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagType) {
+		if err = writeShortstr(&payload, me.Properties.Type); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagUserId) {
+		if err = writeShortstr(&payload, me.Properties.UserId); err != nil {
+			return
+		}
+	}
+	if hasProperty(mask, flagAppId) {
+		if err = writeShortstr(&payload, me.Properties.AppId); err != nil {
+			return
+		}
+	}
+
+	return writeFrame(w, frameHeader, me.ChannelId, payload.Bytes())
+}
+
+// Body
+//
+// Payload is one byterange from the full body who's size is declared in the
+// Header frame
+func (me *bodyFrame) write(w io.Writer) (err error) {
+	return writeFrame(w, frameBody, me.ChannelId, me.Body)
+}
+
+func writeFrame(w io.Writer, typ uint8, channel uint16, payload []byte) (err error) {
+	end := []byte{frameEnd}
+	size := uint(len(payload))
+
+	_, err = w.Write([]byte{
+		byte(typ),
+		byte((channel & 0xff00) >> 8),
+		byte((channel & 0x00ff) >> 0),
+		byte((size & 0xff000000) >> 24),
+		byte((size & 0x00ff0000) >> 16),
+		byte((size & 0x0000ff00) >> 8),
+		byte((size & 0x000000ff) >> 0),
+	})
+
+	if err != nil {
+		return
+	}
+
+	if _, err = w.Write(payload); err != nil {
+		return
+	}
+
+	if _, err = w.Write(end); err != nil {
+		return
+	}
+
+	return
+}
+
+func writeShortstr(w io.Writer, s string) (err error) {
+	b := []byte(s)
+
+	var length uint8 = uint8(len(b))
+
+	if err = binary.Write(w, binary.BigEndian, length); err != nil {
+		return
+	}
+
+	if _, err = w.Write(b[:length]); err != nil {
+		return
+	}
+
+	return
+}
+
+func writeLongstr(w io.Writer, s string) (err error) {
+	b := []byte(s)
+
+	var length uint32 = uint32(len(b))
+
+	if err = binary.Write(w, binary.BigEndian, length); err != nil {
+		return
+	}
+
+	if _, err = w.Write(b[:length]); err != nil {
+		return
+	}
+
+	return
+}
+
+/*
+'A': []interface{}
+'D': Decimal
+'F': Table
+'I': int32
+'S': string
+'T': time.Time
+'V': nil
+'b': byte
+'d': float64
+'f': float32
+'l': int64
+'s': int16
+'t': bool
+'x': []byte
+*/
+func writeField(w io.Writer, value interface{}) (err error) {
+	var buf [9]byte
+	var enc []byte
+
+	switch v := value.(type) {
+	case bool:
+		buf[0] = 't'
+		if v {
+			buf[1] = byte(1)
+		} else {
+			buf[1] = byte(0)
+		}
+		enc = buf[:2]
+
+	case byte:
+		buf[0] = 'b'
+		buf[1] = byte(v)
+		enc = buf[:2]
+
+	case int16:
+		buf[0] = 's'
+		binary.BigEndian.PutUint16(buf[1:3], uint16(v))
+		enc = buf[:3]
+
+	case int32:
+		buf[0] = 'I'
+		binary.BigEndian.PutUint32(buf[1:5], uint32(v))
+		enc = buf[:5]
+
+	case int64:
+		buf[0] = 'l'
+		binary.BigEndian.PutUint64(buf[1:9], uint64(v))
+		enc = buf[:9]
+
+	case float32:
+		buf[0] = 'f'
+		binary.BigEndian.PutUint32(buf[1:5], math.Float32bits(v))
+		enc = buf[:5]
+
+	case float64:
+		buf[0] = 'd'
+		binary.BigEndian.PutUint64(buf[1:9], math.Float64bits(v))
+		enc = buf[:9]
+
+	case Decimal:
+		buf[0] = 'D'
+		buf[1] = byte(v.Scale)
+		binary.BigEndian.PutUint32(buf[2:6], uint32(v.Value))
+		enc = buf[:6]
+
+	case string:
+		buf[0] = 'S'
+		binary.BigEndian.PutUint32(buf[1:5], uint32(len(v)))
+		enc = append(buf[:5], []byte(v)...)
+
+	case []interface{}: // field-array
+		buf[0] = 'A'
+
+		sec := new(bytes.Buffer)
+		for _, val := range v {
+			if err = writeField(sec, val); err != nil {
+				return
+			}
+		}
+
+		binary.BigEndian.PutUint32(buf[1:5], uint32(sec.Len()))
+		if _, err = w.Write(buf[:5]); err != nil {
+			return
+		}
+
+		if _, err = w.Write(sec.Bytes()); err != nil {
+			return
+		}
+
+		return
+
+	case time.Time:
+		buf[0] = 'T'
+		binary.BigEndian.PutUint64(buf[1:9], uint64(v.Unix()))
+		enc = buf[:9]
+
+	case Table:
+		if _, err = w.Write([]byte{'F'}); err != nil {
+			return
+		}
+		return writeTable(w, v)
+
+	case []byte:
+		buf[0] = 'x'
+		binary.BigEndian.PutUint32(buf[1:5], uint32(len(v)))
+		if _, err = w.Write(buf[0:5]); err != nil {
+			return
+		}
+		if _, err = w.Write(v); err != nil {
+			return
+		}
+		return
+
+	case nil:
+		buf[0] = 'V'
+		enc = buf[:1]
+
+	default:
+		return ErrFieldType
+	}
+
+	_, err = w.Write(enc)
+
+	return
+}
+
+func writeTable(w io.Writer, table Table) (err error) {
+	var buf bytes.Buffer
+
+	for key, val := range table {
+		if err = writeShortstr(&buf, key); err != nil {
+			return
+		}
+		if err = writeField(&buf, val); err != nil {
+			return
+		}
+	}
+
+	return writeLongstr(w, string(buf.Bytes()))
+}

vendor/gopkg.in/olivere/elastic.v3/CHANGELOG-3.0.md

@@ -0,0 +1,363 @@
+# Elastic 3.0
+
+Elasticsearch 2.0 comes with some [breaking changes](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/breaking-changes-2.0.html). You will probably need to upgrade your application and/or rewrite part of it due to those changes.
+
+We use that window of opportunity to also update Elastic (the Go client) from version 2.0 to 3.0. This will introduce both changes due to the Elasticsearch 2.0 update as well as changes that make Elastic cleaner by removing some old cruft.
+
+So, to summarize:
+
+1. Elastic 2.0 is compatible with Elasticsearch 1.7+ and is still actively maintained.
+2. Elastic 3.0 is compatible with Elasticsearch 2.0+ and will soon become the new master branch.
+
+The rest of the document is a list of all changes in Elastic 3.0.
+
+## Pointer types
+
+All types have changed to be pointer types, not value types. This not only is cleaner but also simplifies the API as illustrated by the following example:
+
+Example for Elastic 2.0 (old):
+
+```go
+q := elastic.NewMatchAllQuery()
+res, err := elastic.Search("one").Query(&q).Do()  // notice the & here
+```
+
+Example for Elastic 3.0 (new):
+
+```go
+q := elastic.NewMatchAllQuery()
+res, err := elastic.Search("one").Query(q).Do()   // no more &
+// ... which can be simplified as:
+res, err := elastic.Search("one").Query(elastic.NewMatchAllQuery()).Do()
+```
+
+It also helps to prevent [subtle issues](https://github.com/olivere/elastic/issues/115#issuecomment-130753046).
+
+## Query/filter merge
+
+One of the biggest changes in Elasticsearch 2.0 is the [merge of queries and filters](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_query_dsl_changes.html#_queries_and_filters_merged). In Elasticsearch 1.x, you had a whole range of queries and filters that were basically identical (e.g. `term_query` and `term_filter`).
+
+The practical aspect of the merge is that you can now basically use queries where once you had to use filters instead. For Elastic 3.0 this means: We could remove a whole bunch of files. Yay!
+
+Notice that some methods still come by "filter", e.g. `PostFilter`. However, they accept a `Query` now when they used to accept a `Filter` before.
+
+Example for Elastic 2.0 (old):
+
+```go
+q := elastic.NewMatchAllQuery()
+f := elastic.NewTermFilter("tag", "important")
+res, err := elastic.Search().Index("one").Query(&q).PostFilter(f)
+```
+
+Example for Elastic 3.0 (new):
+
+```go
+q := elastic.NewMatchAllQuery()
+f := elastic.NewTermQuery("tag", "important") // it's a query now!
+res, err := elastic.Search().Index("one").Query(q).PostFilter(f)
+```
+
+## Facets are removed
+
+[Facets have been removed](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_removed_features.html#_facets_have_been_removed) in Elasticsearch 2.0. You need to use aggregations now.
+
+## Errors
+
+Elasticsearch 2.0 returns more information about an error in the HTTP response body. Elastic 3.0 now reads this information and makes it accessible by the consumer.
+
+Errors and all its details are now returned in [`Error`](https://github.com/olivere/elastic/blob/release-branch.v3/errors.go#L59).
+
+### HTTP Status 404 (Not Found)
+
+When Elasticsearch does not find an entity or an index, it generally returns HTTP status code 404. In Elastic 2.0 this was a valid result and didn't raise an error from the `Do` functions. This has now changed in Elastic 3.0.
+
+Starting with Elastic 3.0, there are only two types of responses considered successful. First, responses with HTTP status codes [200..299]. Second, HEAD requests which return HTTP status 404. The latter is used by Elasticsearch to e.g. check for existence of indices or documents. All other responses will return an error.
+
+To check for HTTP Status 404 (with non-HEAD requests), e.g. when trying to get or delete a missing document, you can use the [`IsNotFound`](https://github.com/olivere/elastic/blob/release-branch.v3/errors.go#L84) helper (see below).
+
+The following example illustrates how to check for a missing document in Elastic 2.0 and what has changed in 3.0.
+
+Example for Elastic 2.0 (old):
+
+```go
+res, err = client.Get().Index("one").Type("tweet").Id("no-such-id").Do()
+if err != nil {
+  // Something else went wrong (but 404 is NOT an error in Elastic 2.0)
+}
+if !res.Found {
+	// Document has not been found
+}
+```
+
+Example for Elastic 3.0 (new):
+
+```go
+res, err = client.Get().Index("one").Type("tweet").Id("no-such-id").Do()
+if err != nil {
+  if elastic.IsNotFound(err) {
+    // Document has not been found
+  } else {
+    // Something else went wrong
+  }
+}
+```
+
+### HTTP Status 408 (Timeouts)
+
+Elasticsearch now responds with HTTP status code 408 (Timeout) when a request fails due to a timeout. E.g. if you specify a timeout with the Cluster Health API, the HTTP response status will be 408 if the timeout is raised. See [here](https://github.com/elastic/elasticsearch/commit/fe3179d9cccb569784434b2135ca9ae13d5158d3) for the specific commit to the Cluster Health API.
+
+To check for HTTP Status 408, we introduced the [`IsTimeout`](https://github.com/olivere/elastic/blob/release-branch.v3/errors.go#L101) helper.
+
+Example for Elastic 2.0 (old):
+
+```go
+health, err := client.ClusterHealth().WaitForStatus("yellow").Timeout("1s").Do()
+if err != nil {
+  // ...
+}
+if health.TimedOut {
+  // We have a timeout
+}
+```
+
+Example for Elastic 3.0 (new):
+
+```go
+health, err := client.ClusterHealth().WaitForStatus("yellow").Timeout("1s").Do()
+if elastic.IsTimeout(err) {
+  // We have a timeout
+}
+```
+
+### Bulk Errors
+
+The error response of a bulk operation used to be a simple string in Elasticsearch 1.x.
+In Elasticsearch 2.0, it returns a structured JSON object with a lot more details about the error.
+These errors are now captured in an object of type [`ErrorDetails`](https://github.com/olivere/elastic/blob/release-branch.v3/errors.go#L59) which is used in [`BulkResponseItem`](https://github.com/olivere/elastic/blob/release-branch.v3/bulk.go#L206).
+
+### Removed specific Elastic errors
+
+The specific error types `ErrMissingIndex`, `ErrMissingType`, and `ErrMissingId` have been removed. They were only used by `DeleteService` and are replaced by a generic error message.
+
+## Numeric types
+
+Elastic 3.0 has settled to use `float64` everywhere. It used to be a mix of `float32` and `float64` in Elastic 2.0. E.g. all boostable queries in Elastic 3.0 now have a boost type of `float64` where it used to be `float32`.
+
+## Pluralization
+
+Some services accept zero, one or more indices or types to operate on.
+E.g. in the `SearchService` accepts a list of zero, one, or more indices to
+search and therefor had a func called `Index(index string)` and a func
+called `Indices(indices ...string)`.
+
+Elastic 3.0 now only uses the singular form that, when applicable, accepts a
+variadic type. E.g. in the case of the `SearchService`, you now only have
+one func with the following signature: `Index(indices ...string)`.
+
+Notice this is only limited to `Index(...)` and `Type(...)`. There are other
+services with variadic functions. These have not been changed.
+
+## Multiple calls to variadic functions
+
+Some services with variadic functions have cleared the underlying slice when
+called while other services just add to the existing slice. This has now been
+normalized to always add to the underlying slice.
+
+Example for Elastic 2.0 (old):
+
+```go
+// Would only cleared scroll id "two"
+// because ScrollId cleared the values when called multiple times
+client.ClearScroll().ScrollId("one").ScrollId("two").Do()
+```
+
+Example for Elastic 3.0 (new):
+
+```go
+// Now (correctly) clears both scroll id "one" and "two"
+// because ScrollId no longer clears the values when called multiple times
+client.ClearScroll().ScrollId("one").ScrollId("two").Do()
+```
+
+## Ping service requires URL
+
+The `Ping` service raised some issues because it is different from all
+other services. If not explicitly given a URL, it always pings `127.0.0.1:9200`.
+
+Users expected to ping the cluster, but that is not possible as the cluster
+can be a set of many nodes: So which node do we ping then?
+
+To make it more clear, the `Ping` function on the client now requires users
+to explicitly set the URL of the node to ping.
+
+## Meta fields
+
+Many of the meta fields e.g. `_parent` or `_routing` are now
+[part of the top-level of a document](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_mapping_changes.html#migration-meta-fields)
+and are no longer returned as parts of the `fields` object. We had to change
+larger parts of e.g. the `Reindexer` to get it to work seamlessly with Elasticsearch 2.0.
+
+Notice that all stored meta-fields are now [returned by default](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_crud_and_routing_changes.html#_all_stored_meta_fields_returned_by_default).
+
+## HasParentQuery / HasChildQuery
+
+`NewHasParentQuery` and `NewHasChildQuery` must now include both parent/child type and query. It is now in line with the Java API.
+
+Example for Elastic 2.0 (old):
+
+```go
+allQ := elastic.NewMatchAllQuery()
+q := elastic.NewHasChildFilter("tweet").Query(&allQ)
+```
+
+Example for Elastic 3.0 (new):
+
+```go
+q := elastic.NewHasChildQuery("tweet", elastic.NewMatchAllQuery())
+```
+
+## SetBasicAuth client option
+
+You can now tell Elastic to pass HTTP Basic Auth credentials with each request. In previous versions of Elastic you had to set up your own `http.Transport` to do this. This should make it more convenient to use Elastic in combination with [Shield](https://www.elastic.co/products/shield) in its [basic setup](https://www.elastic.co/guide/en/shield/current/enable-basic-auth.html).
+
+Example:
+
+```go
+client, err := elastic.NewClient(elastic.SetBasicAuth("user", "secret"))
+if err != nil {
+  log.Fatal(err)
+}
+```
+
+## Delete-by-Query API
+
+The Delete-by-Query API is [a plugin now](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_removed_features.html#_delete_by_query_is_now_a_plugin). It is no longer core part of Elasticsearch. You can [install it as a plugin as described here](https://www.elastic.co/guide/en/elasticsearch/plugins/2.0/plugins-delete-by-query.html).
+
+Elastic 3.0 still contains the `DeleteByQueryService`, but you need to install the plugin first. If you don't install it and use `DeleteByQueryService` you will most probably get a 404.
+
+An older version of this document stated the following:
+
+> Elastic 3.0 still contains the `DeleteByQueryService` but it will fail with `ErrPluginNotFound` when the plugin is not installed.
+>
+> Example for Elastic 3.0 (new):
+>
+> ```go
+> _, err := client.DeleteByQuery().Query(elastic.NewTermQuery("client", "1")).Do()
+> if err == elastic.ErrPluginNotFound {
+> 	// Delete By Query API is not available
+> }
+> ```
+
+I have decided that this is not a good way to handle the case of a missing plugin. The main reason is that with this logic, you'd always have to check if the plugin is missing in case of an error. This is not only slow, but it also puts logic into a service where it should really be just opaque and return the response of Elasticsearch.
+
+If you rely on certain plugins to be installed, you should check on startup. That's where the following two helpers come into play.
+
+## HasPlugin and SetRequiredPlugins
+
+Some of the core functionality of Elasticsearch has now been moved into plugins. E.g. the Delete-by-Query API is [a plugin now](https://www.elastic.co/guide/en/elasticsearch/plugins/2.0/plugins-delete-by-query.html).
+
+You need to make sure to add these plugins to your Elasticsearch installation to still be able to use the `DeleteByQueryService`. You can test this now with the `HasPlugin(name string)` helper in the client.
+
+Example for Elastic 3.0 (new):
+
+```go
+err, found := client.HasPlugin("delete-by-query")
+if err == nil && found {
+	// ... Delete By Query API is available
+}
+```
+
+To simplify this process, there is now a `SetRequiredPlugins` helper that can be passed as an option func when creating a new client. If the plugin is not installed, the client wouldn't be created in the first place.
+
+```go
+// Will raise an error if the "delete-by-query" plugin is NOT installed
+client, err := elastic.NewClient(elastic.SetRequiredPlugins("delete-by-query"))
+if err != nil {
+  log.Fatal(err)
+}
+```
+
+Notice that there also is a way to define [mandatory plugins](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-plugins.html#_mandatory_plugins) in the Elasticsearch configuration file.
+
+## Common Query has been renamed to Common Terms Query
+
+The `CommonQuery` has been renamed to `CommonTermsQuery` to be in line with the [Java API](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_java_api_changes.html#_query_filter_refactoring).
+
+## Remove `MoreLikeThis` and `MoreLikeThisField`
+
+The More Like This API and the More Like This Field query [have been removed](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_query_dsl_changes.html#_more_like_this) and replaced with the `MoreLikeThisQuery`.
+
+## Remove Filtered Query
+
+With the merge of queries and filters, the [filtered query became deprecated](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_query_dsl_changes.html#_literal_filtered_literal_query_and_literal_query_literal_filter_deprecated). While it is only deprecated and therefore still available in Elasticsearch 2.0, we have decided to remove it from Elastic 3.0. Why? Because we think that when you're already forced to rewrite many of your application code, it might be a good chance to get rid of things that are deprecated as well. So you might simply change your filtered query with a boolean query as [described here](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_query_dsl_changes.html#_literal_filtered_literal_query_and_literal_query_literal_filter_deprecated).
+
+## Remove FuzzyLikeThis and FuzzyLikeThisField
+
+Both have been removed from Elasticsearch 2.0 as well.
+
+## Remove LimitFilter
+
+The `limit` filter is [deprecated in Elasticsearch 2.0](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_query_dsl_changes.html#_literal_limit_literal_filter_deprecated) and becomes a no-op. Now is a good chance to remove it from your application as well. Use the `terminate_after` parameter in your search [as described here](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/search-request-body.html) to achieve similar effects.
+
+## Remove `_cache` and `_cache_key` from filters
+
+Both have been [removed from Elasticsearch 2.0 as well](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_query_dsl_changes.html#_filter_auto_caching).
+
+## Partial fields are gone
+
+Partial fields are [removed in Elasticsearch 2.0](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_search_changes.html#_partial_fields) in favor of [source filtering](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/search-request-source-filtering.html).
+
+## Scripting
+
+A [`Script`](https://github.com/olivere/elastic/blob/release-branch.v3/script.go) type has been added to Elastic 3.0. In Elastic 2.0, there were various places (e.g. aggregations) where you could just add the script as a string, specify the scripting language, add parameters etc. With Elastic 3.0, you should now always use the `Script` type.
+
+Example for Elastic 2.0 (old):
+
+```go
+update, err := client.Update().Index("twitter").Type("tweet").Id("1").
+	Script("ctx._source.retweets += num").
+	ScriptParams(map[string]interface{}{"num": 1}).
+	Upsert(map[string]interface{}{"retweets": 0}).
+	Do()
+```
+
+Example for Elastic 3.0 (new):
+
+```go
+update, err := client.Update().Index("twitter").Type("tweet").Id("1").
+	Script(elastic.NewScript("ctx._source.retweets += num").Param("num", 1)).
+	Upsert(map[string]interface{}{"retweets": 0}).
+	Do()
+```
+
+## Cluster State
+
+The combination of `Metric(string)` and `Metrics(...string)` has been replaced by a single func with the signature `Metric(...string)`.
+
+## Unexported structs in response
+
+Services generally return a typed response from a `Do` func. Those structs are exported so that they can be passed around in your own application. In Elastic 3.0 however, we changed that (most) sub-structs are now unexported, meaning: You can only pass around the whole response, not sub-structures of it. This makes it easier for restructuring responses according to the Elasticsearch API. See [`ClusterStateResponse`](https://github.com/olivere/elastic/blob/release-branch.v3/cluster_state.go#L182) as an example.
+
+## Add offset to Histogram aggregation
+
+Histogram aggregations now have an [offset](https://github.com/elastic/elasticsearch/pull/9505) option.
+
+## Services
+
+### REST API specification
+
+As you might know, Elasticsearch comes with a REST API specification. The specification describes the endpoints in a JSON structure.
+
+Most services in Elastic predated the REST API specification. We are in the process of bringing all these services in line with the specification. Services can be generated by `go generate` (not 100% automatic though). This is an ongoing process.
+
+This probably doesn't mean a lot to you. However, you can now be more confident that Elastic supports all features that the REST API specification describes.
+
+At the same time, the file names of the services are renamed to match the REST API specification naming.
+
+### REST API Test Suite
+
+The REST API specification of Elasticsearch comes along with a test suite that official clients typically use to test for conformance. Up until now, Elastic didn't run this test suite. However, we are in the process of setting up infrastructure and tests to match this suite as well.
+
+This process in not completed though.
+
+

vendor/gopkg.in/olivere/elastic.v3/CONTRIBUTING.md

@@ -0,0 +1,40 @@
+# How to contribute
+
+Elastic is an open-source project and we are looking forward to each
+contribution.
+
+Notice that while the [official Elasticsearch documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html) is rather good, it is a high-level
+overview of the features of Elasticsearch. However, Elastic tries to resemble
+the Java API of Elasticsearch which you can find [on GitHub](https://github.com/elastic/elasticsearch).
+
+This explains why you might think that some options are strange or missing
+in Elastic, while often they're just different. Please check the Java API first.
+
+Having said that: Elasticsearch is moving fast and it might be very likely
+that we missed some features or changes. Feel free to change that.
+
+## Your Pull Request
+
+To make it easy to review and understand your changes, please keep the
+following things in mind before submitting your pull request:
+
+* You compared the existing implemenation with the Java API, did you?
+* Please work on the latest possible state of `olivere/elastic`.
+  Use `release-branch.v2` for targeting Elasticsearch 1.x and
+  `release-branch.v3` for targeting 2.x.
+* Create a branch dedicated to your change.
+* If possible, write a test case which confirms your change.
+* Make sure your changes and your tests work with all recent versions of
+  Elasticsearch. We currently support Elasticsearch 1.7.x in the
+  release-branch.v2 and Elasticsearch 2.x in the release-branch.v3.
+* Test your changes before creating a pull request (`go test ./...`).
+* Don't mix several features or bug fixes in one pull request.
+* Create a meaningful commit message.
+* Explain your change, e.g. provide a link to the issue you are fixing and
+  probably a link to the Elasticsearch documentation and/or source code.
+* Format your source with `go fmt`.
+
+## Additional Resources
+
+* [GitHub documentation](http://help.github.com/)
+* [GitHub pull request documentation](http://help.github.com/send-pull-requests/)

vendor/gopkg.in/olivere/elastic.v3/CONTRIBUTORS

@@ -0,0 +1,60 @@
+# This is a list of people who have contributed code
+# to the Elastic repository.
+#
+# It is just my small "thank you" to all those that helped
+# making Elastic what it is.
+#
+# Please keep this list sorted.
+
+Adam Alix [@adamalix](https://github.com/adamalix)
+Adam Weiner [@adamweiner](https://github.com/adamweiner)
+Alexey Sharov [@nizsheanez](https://github.com/nizsheanez)
+Benjamin Zarzycki [@kf6nux](https://github.com/kf6nux)
+Braden Bassingthwaite [@bbassingthwaite-va](https://github.com/bbassingthwaite-va)
+Brady Love [@bradylove](https://github.com/bradylove)
+Bruce Zhou [@brucez-isell](https://github.com/brucez-isell)
+Chris M [@tebriel](https://github.com/tebriel)
+Christophe Courtaut [@kri5](https://github.com/kri5)
+Conrad Pankoff [@deoxxa](https://github.com/deoxxa)
+Corey Scott [@corsc](https://github.com/corsc)
+Daniel Barrett [@shendaras](https://github.com/shendaras)
+Daniel Heckrath [@DanielHeckrath](https://github.com/DanielHeckrath)
+Daniel Imfeld [@dimfeld](https://github.com/dimfeld)
+Dwayne Schultz [@myshkin5](https://github.com/myshkin5)
+Faolan C-P [@fcheslack](https://github.com/fcheslack)
+Gerhard Häring [@ghaering](https://github.com/ghaering)
+Guilherme Silveira [@guilherme-santos](https://github.com/guilherme-santos)
+Guillaume J. Charmes [@creack](https://github.com/creack)
+Han Yu [@MoonighT](https://github.com/MoonighT)
+Harrison Wright [@wright8191](https://github.com/wright8191)
+Igor Dubinskiy [@idubinskiy](https://github.com/idubinskiy)
+Isaac Saldana [@isaldana](https://github.com/isaldana)
+Jack Lindamood [@cep21](https://github.com/cep21)
+Joe Buck [@four2five](https://github.com/four2five)
+John Barker [@j16r](https://github.com/j16r)
+John Goodall [@jgoodall](https://github.com/jgoodall)
+Junpei Tsuji [@jun06t](https://github.com/jun06t)
+Kenta SUZUKI [@suzuken](https://github.com/suzuken)
+Maciej Lisiewski [@c2h5oh](https://github.com/c2h5oh)
+Mara Kim [@autochthe](https://github.com/autochthe)
+Marcy Buccellato [@marcybuccellato](https://github.com/marcybuccellato)
+Medhi Bechina [@mdzor](https://github.com/mdzor)
+naimulhaider [@naimulhaider](https://github.com/naimulhaider)
+navins [@ishare](https://github.com/ishare)
+Naoya Tsutsumi [@tutuming](https://github.com/tutuming)
+Nicholas Wolff [@nwolff](https://github.com/nwolff)
+Nick Whyte [@nickw444](https://github.com/nickw444)
+Orne Brocaar [@brocaar](https://github.com/brocaar)
+Radoslaw Wesolowski [r--w](https://github.com/r--w)
+Ryan Schmukler [@rschmukler](https://github.com/rschmukler)
+Sacheendra talluri [@sacheendra](https://github.com/sacheendra)
+Sean DuBois [@Sean-Der](https://github.com/Sean-Der)
+Shalin LK [@shalinlk](https://github.com/shalinlk)
+Stephen Kubovic [@stephenkubovic](https://github.com/stephenkubovic)
+Stuart Warren [@Woz](https://github.com/stuart-warren)
+Sundar [@sundarv85](https://github.com/sundarv85)
+Tetsuya Morimoto [@t2y](https://github.com/t2y)
+TimeEmit [@TimeEmit](https://github.com/timeemit)
+TusharM [@tusharm](https://github.com/tusharm)
+wolfkdy [@wolfkdy](https://github.com/wolfkdy)
+zakthomas [@zakthomas](https://github.com/zakthomas)

vendor/gopkg.in/olivere/elastic.v3/ISSUE_TEMPLATE.md

@@ -0,0 +1,16 @@
+Please use the following questions as a guideline to help me answer
+your issue/question without further inquiry. Thank you.
+
+### Which version of Elastic are you using?
+
+[ ] elastic.v2 (for Elasticsearch 1.x)
+[ ] elastic.v3 (for Elasticsearch 2.x)
+
+### Please describe the expected behavior
+
+
+### Please describe the actual behavior
+
+
+### Any steps to reproduce the behavior?
+

vendor/gopkg.in/olivere/elastic.v3/LICENSE

@@ -1,21 +1,20 @@
 The MIT License (MIT)
-
+Copyright © 2012-2015 Oliver Eilhard
-Copyright (c) 2014 Ben Johnson
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
+of this software and associated documentation files (the “Software”), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
+The above copyright notice and this permission notice shall be included
-copies or substantial portions of the Software.
+in all copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-SOFTWARE.
+IN THE SOFTWARE.

vendor/gopkg.in/olivere/elastic.v3/README.md

@@ -0,0 +1,421 @@
+# Elastic
+
+Elastic is an [Elasticsearch](http://www.elasticsearch.org/) client for the
+[Go](http://www.golang.org/) programming language.
+
+[![Build Status](https://travis-ci.org/olivere/elastic.svg?branch=release-branch.v3)](https://travis-ci.org/olivere/elastic)
+[![Godoc](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](http://godoc.org/gopkg.in/olivere/elastic.v3)
+[![license](http://img.shields.io/badge/license-MIT-red.svg?style=flat)](https://raw.githubusercontent.com/olivere/elastic/master/LICENSE)
+
+See the [wiki](https://github.com/olivere/elastic/wiki) for additional information about Elastic.
+
+
+## Releases
+
+**The release branches (e.g. [`release-branch.v3`](https://github.com/olivere/elastic/tree/release-branch.v3)) are actively being worked on and can break at any time. If you want to use stable versions of Elastic, please use the packages released via [gopkg.in](https://gopkg.in).**
+
+Here's the version matrix:
+
+Elasticsearch version | Elastic version -| Package URL
+----------------------|------------------|------------
+2.x                   | 3.0              | [`gopkg.in/olivere/elastic.v3`](https://gopkg.in/olivere/elastic.v3) ([source](https://github.com/olivere/elastic/tree/release-branch.v3) [doc](http://godoc.org/gopkg.in/olivere/elastic.v3))
+1.x                   | 2.0              | [`gopkg.in/olivere/elastic.v2`](https://gopkg.in/olivere/elastic.v2) ([source](https://github.com/olivere/elastic/tree/release-branch.v2) [doc](http://godoc.org/gopkg.in/olivere/elastic.v2))
+0.9-1.3               | 1.0              | [`gopkg.in/olivere/elastic.v1`](https://gopkg.in/olivere/elastic.v1) ([source](https://github.com/olivere/elastic/tree/release-branch.v1) [doc](http://godoc.org/gopkg.in/olivere/elastic.v1))
+
+**Example:**
+
+You have installed Elasticsearch 2.1.1 and want to use Elastic. As listed above, you should use Elastic 3.0. So you first install the stable release of Elastic 3.0 from gopkg.in.
+
+```sh
+$ go get gopkg.in/olivere/elastic.v3
+```
+
+You then import it with this import path:
+
+```go
+import "gopkg.in/olivere/elastic.v3"
+```
+
+### Elastic 3.0
+
+Elastic 3.0 targets Elasticsearch 2.0 and later. Elasticsearch 2.0.0 was [released on 28th October 2015](https://www.elastic.co/blog/elasticsearch-2-0-0-released).
+
+Notice that there are a lot of [breaking changes in Elasticsearch 2.0](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/breaking-changes-2.0.html) and we used this as an opportunity to [clean up and refactor Elastic as well](https://github.com/olivere/elastic/blob/release-branch.v3/CHANGELOG-3.0.md).
+
+### Elastic 2.0
+
+Elastic 2.0 targets Elasticsearch 1.x and is published via [`gopkg.in/olivere/elastic.v2`](https://gopkg.in/olivere/elastic.v2).
+
+### Elastic 1.0
+
+Elastic 1.0 is deprecated. You should really update Elasticsearch and Elastic
+to a recent version.
+
+However, if you cannot update for some reason, don't worry. Version 1.0 is
+still available. All you need to do is go-get it and change your import path
+as described above.
+
+
+## Status
+
+We use Elastic in production since 2012. Elastic is stable but the API changes
+now and then. We strive for API compatibility.
+However, Elasticsearch sometimes introduces [breaking changes](https://www.elastic.co/guide/en/elasticsearch/reference/master/breaking-changes.html)
+and we sometimes have to adapt.
+
+Having said that, there have been no big API changes that required you
+to rewrite your application big time. More often than not it's renaming APIs
+and adding/removing features so that Elastic is in sync with Elasticsearch.
+
+Elastic has been used in production with the following Elasticsearch versions:
+0.90, 1.0-1.7. Furthermore, we use [Travis CI](https://travis-ci.org/)
+to test Elastic with the most recent versions of Elasticsearch and Go.
+See the [.travis.yml](https://github.com/olivere/elastic/blob/master/.travis.yml)
+file for the exact matrix and [Travis](https://travis-ci.org/olivere/elastic)
+for the results.
+
+Elasticsearch has quite a few features. Most of them are implemented
+by Elastic. I add features and APIs as required. It's straightforward
+to implement missing pieces. I'm accepting pull requests :-)
+
+Having said that, I hope you find the project useful.
+
+
+## Getting Started
+
+The first thing you do is to create a [Client](https://github.com/olivere/elastic/blob/master/client.go). The client connects to Elasticsearch on `http://127.0.0.1:9200` by default.
+
+You typically create one client for your app. Here's a complete example of
+creating a client, creating an index, adding a document, executing a search etc.
+
+```go
+// Create a client
+client, err := elastic.NewClient()
+if err != nil {
+    // Handle error
+}
+
+// Create an index
+_, err = client.CreateIndex("twitter").Do()
+if err != nil {
+    // Handle error
+    panic(err)
+}
+
+// Add a document to the index
+tweet := Tweet{User: "olivere", Message: "Take Five"}
+_, err = client.Index().
+    Index("twitter").
+    Type("tweet").
+    Id("1").
+    BodyJson(tweet).
+    Refresh(true).
+    Do()
+if err != nil {
+    // Handle error
+    panic(err)
+}
+
+// Search with a term query
+termQuery := elastic.NewTermQuery("user", "olivere")
+searchResult, err := client.Search().
+    Index("twitter").   // search in index "twitter"
+    Query(termQuery).   // specify the query
+    Sort("user", true). // sort by "user" field, ascending
+    From(0).Size(10).   // take documents 0-9
+    Pretty(true).       // pretty print request and response JSON
+    Do()                // execute
+if err != nil {
+    // Handle error
+    panic(err)
+}
+
+// searchResult is of type SearchResult and returns hits, suggestions,
+// and all kinds of other information from Elasticsearch.
+fmt.Printf("Query took %d milliseconds\n", searchResult.TookInMillis)
+
+// Each is a convenience function that iterates over hits in a search result.
+// It makes sure you don't need to check for nil values in the response.
+// However, it ignores errors in serialization. If you want full control
+// over iterating the hits, see below.
+var ttyp Tweet
+for _, item := range searchResult.Each(reflect.TypeOf(ttyp)) {
+    if t, ok := item.(Tweet); ok {
+        fmt.Printf("Tweet by %s: %s\n", t.User, t.Message)
+    }
+}
+// TotalHits is another convenience function that works even when something goes wrong.
+fmt.Printf("Found a total of %d tweets\n", searchResult.TotalHits())
+
+// Here's how you iterate through results with full control over each step.
+if searchResult.Hits.TotalHits > 0 {
+    fmt.Printf("Found a total of %d tweets\n", searchResult.Hits.TotalHits)
+
+    // Iterate through results
+    for _, hit := range searchResult.Hits.Hits {
+        // hit.Index contains the name of the index
+
+        // Deserialize hit.Source into a Tweet (could also be just a map[string]interface{}).
+        var t Tweet
+        err := json.Unmarshal(*hit.Source, &t)
+        if err != nil {
+            // Deserialization failed
+        }
+
+        // Work with tweet
+        fmt.Printf("Tweet by %s: %s\n", t.User, t.Message)
+    }
+} else {
+    // No hits
+    fmt.Print("Found no tweets\n")
+}
+
+// Delete the index again
+_, err = client.DeleteIndex("twitter").Do()
+if err != nil {
+    // Handle error
+    panic(err)
+}
+```
+
+Here's a [link to a complete working example](https://gist.github.com/olivere/114347ff9d9cfdca7bdc0ecea8b82263).
+
+See the [wiki](https://github.com/olivere/elastic/wiki) for more details.
+
+
+## API Status
+
+### Document APIs
+
+- [x] Index API
+- [x] Get API
+- [x] Delete API
+- [x] Delete By Query API
+- [x] Update API
+- [x] Update By Query API
+- [x] Multi Get API
+- [x] Bulk API
+- [x] Reindex API
+- [x] Term Vectors
+- [x] Multi termvectors API
+
+### Search APIs
+
+- [x] Search
+- [x] Search Template
+- [ ] Search Shards API
+- [x] Suggesters
+  - [x] Term Suggester
+  - [x] Phrase Suggester
+  - [x] Completion Suggester
+  - [x] Context Suggester
+- [x] Multi Search API
+- [x] Count API
+- [ ] Search Exists API
+- [ ] Validate API
+- [x] Explain API
+- [x] Percolator API
+- [x] Field Stats API
+
+### Aggregations
+
+- Metrics Aggregations
+  - [x] Avg
+  - [x] Cardinality
+  - [x] Extended Stats
+  - [x] Geo Bounds
+  - [x] Max
+  - [x] Min
+  - [x] Percentiles
+  - [x] Percentile Ranks
+  - [ ] Scripted Metric
+  - [x] Stats
+  - [x] Sum
+  - [x] Top Hits
+  - [x] Value Count
+- Bucket Aggregations
+  - [x] Children
+  - [x] Date Histogram
+  - [x] Date Range
+  - [x] Filter
+  - [x] Filters
+  - [x] Geo Distance
+  - [ ] GeoHash Grid
+  - [x] Global
+  - [x] Histogram
+  - [x] IPv4 Range
+  - [x] Missing
+  - [x] Nested
+  - [x] Range
+  - [x] Reverse Nested
+  - [x] Sampler
+  - [x] Significant Terms
+  - [x] Terms
+- Pipeline Aggregations
+  - [x] Avg Bucket
+  - [x] Derivative
+  - [x] Max Bucket
+  - [x] Min Bucket
+  - [x] Sum Bucket
+  - [x] Moving Average
+  - [x] Cumulative Sum
+  - [x] Bucket Script
+  - [x] Bucket Selector
+  - [x] Serial Differencing
+- [x] Aggregation Metadata
+
+### Indices APIs
+
+- [x] Create Index
+- [x] Delete Index
+- [x] Get Index
+- [x] Indices Exists
+- [x] Open / Close Index
+- [x] Put Mapping
+- [x] Get Mapping
+- [ ] Get Field Mapping
+- [ ] Types Exists
+- [x] Index Aliases
+- [x] Update Indices Settings
+- [x] Get Settings
+- [ ] Analyze
+- [x] Index Templates
+- [x] Warmers
+- [x] Indices Stats
+- [ ] Indices Segments
+- [ ] Indices Recovery
+- [ ] Clear Cache
+- [x] Flush
+- [x] Refresh
+- [x] Optimize
+- [ ] Shadow Replica Indices
+- [ ] Upgrade
+
+### cat APIs
+
+The cat APIs are not implemented as of now. We think they are better suited for operating with Elasticsearch on the command line.
+
+- [ ] cat aliases
+- [ ] cat allocation
+- [ ] cat count
+- [ ] cat fielddata
+- [ ] cat health
+- [ ] cat indices
+- [ ] cat master
+- [ ] cat nodes
+- [ ] cat pending tasks
+- [ ] cat plugins
+- [ ] cat recovery
+- [ ] cat thread pool
+- [ ] cat shards
+- [ ] cat segments
+
+### Cluster APIs
+
+- [x] Cluster Health
+- [x] Cluster State
+- [x] Cluster Stats
+- [ ] Pending Cluster Tasks
+- [ ] Cluster Reroute
+- [ ] Cluster Update Settings
+- [ ] Nodes Stats
+- [x] Nodes Info
+- [x] Task Management API
+- [ ] Nodes hot_threads
+
+### Query DSL
+
+- [x] Match All Query
+- [x] Inner hits
+- Full text queries
+  - [x] Match Query
+  - [x] Multi Match Query
+  - [x] Common Terms Query
+  - [x] Query String Query
+  - [x] Simple Query String Query
+- Term level queries
+  - [x] Term Query
+  - [x] Terms Query
+  - [x] Range Query
+  - [x] Exists Query
+  - [x] Missing Query
+  - [x] Prefix Query
+  - [x] Wildcard Query
+  - [x] Regexp Query
+  - [x] Fuzzy Query
+  - [x] Type Query
+  - [x] Ids Query
+- Compound queries
+  - [x] Constant Score Query
+  - [x] Bool Query
+  - [x] Dis Max Query
+  - [x] Function Score Query
+  - [x] Boosting Query
+  - [x] Indices Query
+  - [x] And Query (deprecated)
+  - [x] Not Query
+  - [x] Or Query (deprecated)
+  - [ ] Filtered Query (deprecated)
+  - [ ] Limit Query (deprecated)
+- Joining queries
+  - [x] Nested Query
+  - [x] Has Child Query
+  - [x] Has Parent Query
+- Geo queries
+  - [ ] GeoShape Query
+  - [x] Geo Bounding Box Query
+  - [x] Geo Distance Query
+  - [ ] Geo Distance Range Query
+  - [x] Geo Polygon Query
+  - [ ] Geohash Cell Query
+- Specialized queries
+  - [x] More Like This Query
+  - [x] Template Query
+  - [x] Script Query
+- Span queries
+  - [ ] Span Term Query
+  - [ ] Span Multi Term Query
+  - [ ] Span First Query
+  - [ ] Span Near Query
+  - [ ] Span Or Query
+  - [ ] Span Not Query
+  - [ ] Span Containing Query
+  - [ ] Span Within Query
+
+### Modules
+
+- [ ] Snapshot and Restore
+
+### Sorting
+
+- [x] Sort by score
+- [x] Sort by field
+- [x] Sort by geo distance
+- [x] Sort by script
+
+### Scan
+
+Scrolling through documents (e.g. `search_type=scan`) are implemented via
+the `Scroll` and `Scan` services. The `ClearScroll` API is implemented as well.
+
+
+## How to contribute
+
+Read [the contribution guidelines](https://github.com/olivere/elastic/blob/master/CONTRIBUTING.md).
+
+## Credits
+
+Thanks a lot for the great folks working hard on
+[Elasticsearch](http://www.elasticsearch.org/)
+and
+[Go](http://www.golang.org/).
+
+Elastic uses portions of the
+[uritemplates](https://github.com/jtacoma/uritemplates) library
+by Joshua Tacoma and
+[backoff](https://github.com/cenkalti/backoff) by Cenk Altı.
+
+## LICENSE
+
+MIT-LICENSE. See [LICENSE](http://olivere.mit-license.org/)
+or the LICENSE file provided in the repository for details.

vendor/gopkg.in/olivere/elastic.v3/backoff/LICENSE

@@ -0,0 +1,22 @@
+Portions of this code rely on this LICENSE:
+
+The MIT License (MIT)
+
+Copyright (c) 2014 Cenk Altı
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/gopkg.in/olivere/elastic.v3/backoff/backoff.go

@@ -0,0 +1,159 @@
+// Copyright 2012-2016 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package backoff
+
+import (
+	"math"
+	"math/rand"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+// Backoff is an interface for different types of backoff algorithms.
+type Backoff interface {
+	Next() time.Duration
+	Reset()
+}
+
+// Stop is used as a signal to indicate that no more retries should be made.
+const Stop time.Duration = -1
+
+// -- Simple Backoff --
+
+// SimpleBackoff takes a list of fixed values for backoff intervals.
+// Each call to Next returns the next value from that fixed list.
+// After each value is returned, subsequent calls to Next will only return
+// the last element. The caller may specify if the values are "jittered".
+type SimpleBackoff struct {
+	sync.Mutex
+	ticks  []int
+	index  int
+	jitter bool
+	stop   bool
+}
+
+// NewSimpleBackoff creates a SimpleBackoff algorithm with the specified
+// list of fixed intervals in milliseconds.
+func NewSimpleBackoff(ticks ...int) *SimpleBackoff {
+	return &SimpleBackoff{
+		ticks:  ticks,
+		index:  0,
+		jitter: false,
+		stop:   false,
+	}
+}
+
+// Jitter, when set, randomizes to return a value of [0.5*value .. 1.5*value].
+func (b *SimpleBackoff) Jitter(doJitter bool) *SimpleBackoff {
+	b.Lock()
+	defer b.Unlock()
+	b.jitter = doJitter
+	return b
+}
+
+// SendStop, when enables, makes Next to return Stop once
+// the list of values is exhausted.
+func (b *SimpleBackoff) SendStop(doStop bool) *SimpleBackoff {
+	b.Lock()
+	defer b.Unlock()
+	b.stop = doStop
+	return b
+}
+
+// Next returns the next wait interval.
+func (b *SimpleBackoff) Next() time.Duration {
+	b.Lock()
+	defer b.Unlock()
+
+	i := b.index
+	if i >= len(b.ticks) {
+		if b.stop {
+			return Stop
+		}
+		i = len(b.ticks) - 1
+		b.index = i
+	} else {
+		b.index++
+	}
+
+	ms := b.ticks[i]
+	if b.jitter {
+		ms = jitter(ms)
+	}
+	return time.Duration(ms) * time.Millisecond
+}
+
+// Reset resets SimpleBackoff.
+func (b *SimpleBackoff) Reset() {
+	b.Lock()
+	b.index = 0
+	b.Unlock()
+}
+
+// jitter randomizes the interval to return a value of [0.5*millis .. 1.5*millis].
+func jitter(millis int) int {
+	if millis <= 0 {
+		return 0
+	}
+	return millis/2 + rand.Intn(millis)
+}
+
+// -- Exponential --
+
+// ExponentialBackoff implements the simple exponential backoff described by
+// Douglas Thain at http://dthain.blogspot.de/2009/02/exponential-backoff-in-distributed.html.
+type ExponentialBackoff struct {
+	sync.Mutex
+	t    float64 // initial timeout (in msec)
+	f    float64 // exponential factor (e.g. 2)
+	m    float64 // maximum timeout (in msec)
+	n    int64   // number of retries
+	stop bool    // indicates whether Next should send "Stop" whan max timeout is reached
+}
+
+// NewExponentialBackoff returns a ExponentialBackoff backoff policy.
+// Use initialTimeout to set the first/minimal interval
+// and maxTimeout to set the maximum wait interval.
+func NewExponentialBackoff(initialTimeout, maxTimeout time.Duration) *ExponentialBackoff {
+	return &ExponentialBackoff{
+		t:    float64(int64(initialTimeout / time.Millisecond)),
+		f:    2.0,
+		m:    float64(int64(maxTimeout / time.Millisecond)),
+		n:    0,
+		stop: false,
+	}
+}
+
+// SendStop, when enables, makes Next to return Stop once
+// the maximum timeout is reached.
+func (b *ExponentialBackoff) SendStop(doStop bool) *ExponentialBackoff {
+	b.Lock()
+	defer b.Unlock()
+	b.stop = doStop
+	return b
+}
+
+// Next returns the next wait interval.
+func (t *ExponentialBackoff) Next() time.Duration {
+	t.Lock()
+	defer t.Unlock()
+
+	n := float64(atomic.AddInt64(&t.n, 1))
+	r := 1.0 + rand.Float64() // random number in [1..2]
+	m := math.Min(r*t.t*math.Pow(t.f, n), t.m)
+	if t.stop && m >= t.m {
+		return Stop
+	}
+	d := time.Duration(int64(m)) * time.Millisecond
+	return d
+}
+
+// Reset resets the backoff policy so that it can be reused.
+func (t *ExponentialBackoff) Reset() {
+	t.Lock()
+	t.n = 0
+	t.Unlock()
+}

vendor/gopkg.in/olivere/elastic.v3/backoff/retry.go

@@ -0,0 +1,53 @@
+// Copyright 2012-2016 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+// This file is (c) 2014 Cenk Altı and governed by the MIT license.
+// See https://github.com/cenkalti/backoff for original source.
+
+package backoff
+
+import "time"
+
+// An Operation is executing by Retry() or RetryNotify().
+// The operation will be retried using a backoff policy if it returns an error.
+type Operation func() error
+
+// Notify is a notify-on-error function. It receives an operation error and
+// backoff delay if the operation failed (with an error).
+//
+// NOTE that if the backoff policy stated to stop retrying,
+// the notify function isn't called.
+type Notify func(error, time.Duration)
+
+// Retry the function f until it does not return error or BackOff stops.
+// f is guaranteed to be run at least once.
+// It is the caller's responsibility to reset b after Retry returns.
+//
+// Retry sleeps the goroutine for the duration returned by BackOff after a
+// failed operation returns.
+func Retry(o Operation, b Backoff) error { return RetryNotify(o, b, nil) }
+
+// RetryNotify calls notify function with the error and wait duration
+// for each failed attempt before sleep.
+func RetryNotify(operation Operation, b Backoff, notify Notify) error {
+	var err error
+	var next time.Duration
+
+	b.Reset()
+	for {
+		if err = operation(); err == nil {
+			return nil
+		}
+
+		if next = b.Next(); next == Stop {
+			return err
+		}
+
+		if notify != nil {
+			notify(err, next)
+		}
+
+		time.Sleep(next)
+	}
+}

vendor/gopkg.in/olivere/elastic.v3/bulk.go

@@ -0,0 +1,353 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// BulkService allows for batching bulk requests and sending them to
+// Elasticsearch in one roundtrip. Use the Add method with BulkIndexRequest,
+// BulkUpdateRequest, and BulkDeleteRequest to add bulk requests to a batch,
+// then use Do to send them to Elasticsearch.
+//
+// BulkService will be reset after each Do call. In other words, you can
+// reuse BulkService to send many batches. You do not have to create a new
+// BulkService for each batch.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/2.x/docs-bulk.html
+// for more details.
+type BulkService struct {
+	client *Client
+
+	index    string
+	typ      string
+	requests []BulkableRequest
+	timeout  string
+	refresh  *bool
+	pretty   bool
+
+	sizeInBytes int64
+}
+
+// NewBulkService initializes a new BulkService.
+func NewBulkService(client *Client) *BulkService {
+	builder := &BulkService{
+		client:   client,
+		requests: make([]BulkableRequest, 0),
+	}
+	return builder
+}
+
+func (s *BulkService) reset() {
+	s.requests = make([]BulkableRequest, 0)
+	s.sizeInBytes = 0
+}
+
+// Index specifies the index to use for all batches. You may also leave
+// this blank and specify the index in the individual bulk requests.
+func (s *BulkService) Index(index string) *BulkService {
+	s.index = index
+	return s
+}
+
+// Type specifies the type to use for all batches. You may also leave
+// this blank and specify the type in the individual bulk requests.
+func (s *BulkService) Type(typ string) *BulkService {
+	s.typ = typ
+	return s
+}
+
+// Timeout is a global timeout for processing bulk requests. This is a
+// server-side timeout, i.e. it tells Elasticsearch the time after which
+// it should stop processing.
+func (s *BulkService) Timeout(timeout string) *BulkService {
+	s.timeout = timeout
+	return s
+}
+
+// Refresh, when set to true, tells Elasticsearch to make the bulk requests
+// available to search immediately after being processed. Normally, this
+// only happens after a specified refresh interval.
+func (s *BulkService) Refresh(refresh bool) *BulkService {
+	s.refresh = &refresh
+	return s
+}
+
+// Pretty tells Elasticsearch whether to return a formatted JSON response.
+func (s *BulkService) Pretty(pretty bool) *BulkService {
+	s.pretty = pretty
+	return s
+}
+
+// Add adds bulkable requests, i.e. BulkIndexRequest, BulkUpdateRequest,
+// and/or BulkDeleteRequest.
+func (s *BulkService) Add(requests ...BulkableRequest) *BulkService {
+	for _, r := range requests {
+		s.requests = append(s.requests, r)
+		s.sizeInBytes += s.estimateSizeInBytes(r)
+	}
+	return s
+}
+
+// EstimatedSizeInBytes returns the estimated size of all bulkable
+// requests added via Add.
+func (s *BulkService) EstimatedSizeInBytes() int64 {
+	return s.sizeInBytes
+}
+
+// estimateSizeInBytes returns the estimates size of the given
+// bulkable request, i.e. BulkIndexRequest, BulkUpdateRequest, and
+// BulkDeleteRequest.
+func (s *BulkService) estimateSizeInBytes(r BulkableRequest) int64 {
+	lines, _ := r.Source()
+	size := 0
+	for _, line := range lines {
+		// +1 for the \n
+		size += len(line) + 1
+	}
+	return int64(size)
+}
+
+// NumberOfActions returns the number of bulkable requests that need to
+// be sent to Elasticsearch on the next batch.
+func (s *BulkService) NumberOfActions() int {
+	return len(s.requests)
+}
+
+func (s *BulkService) bodyAsString() (string, error) {
+	buf := bytes.NewBufferString("")
+
+	for _, req := range s.requests {
+		source, err := req.Source()
+		if err != nil {
+			return "", err
+		}
+		for _, line := range source {
+			_, err := buf.WriteString(fmt.Sprintf("%s\n", line))
+			if err != nil {
+				return "", nil
+			}
+		}
+	}
+
+	return buf.String(), nil
+}
+
+// Do sends the batched requests to Elasticsearch. Note that, when successful,
+// you can reuse the BulkService for the next batch as the list of bulk
+// requests is cleared on success.
+func (s *BulkService) Do() (*BulkResponse, error) {
+	// No actions?
+	if s.NumberOfActions() == 0 {
+		return nil, errors.New("elastic: No bulk actions to commit")
+	}
+
+	// Get body
+	body, err := s.bodyAsString()
+	if err != nil {
+		return nil, err
+	}
+
+	// Build url
+	path := "/"
+	if s.index != "" {
+		index, err := uritemplates.Expand("{index}", map[string]string{
+			"index": s.index,
+		})
+		if err != nil {
+			return nil, err
+		}
+		path += index + "/"
+	}
+	if s.typ != "" {
+		typ, err := uritemplates.Expand("{type}", map[string]string{
+			"type": s.typ,
+		})
+		if err != nil {
+			return nil, err
+		}
+		path += typ + "/"
+	}
+	path += "_bulk"
+
+	// Parameters
+	params := make(url.Values)
+	if s.pretty {
+		params.Set("pretty", fmt.Sprintf("%v", s.pretty))
+	}
+	if s.refresh != nil {
+		params.Set("refresh", fmt.Sprintf("%v", *s.refresh))
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+
+	// Get response
+	res, err := s.client.PerformRequest("POST", path, params, body)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return results
+	ret := new(BulkResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+
+	// Reset so the request can be reused
+	s.reset()
+
+	return ret, nil
+}
+
+// BulkResponse is a response to a bulk execution.
+//
+// Example:
+// {
+//   "took":3,
+//   "errors":false,
+//   "items":[{
+//     "index":{
+//       "_index":"index1",
+//       "_type":"tweet",
+//       "_id":"1",
+//       "_version":3,
+//       "status":201
+//     }
+//   },{
+//     "index":{
+//       "_index":"index2",
+//       "_type":"tweet",
+//       "_id":"2",
+//       "_version":3,
+//       "status":200
+//     }
+//   },{
+//     "delete":{
+//       "_index":"index1",
+//       "_type":"tweet",
+//       "_id":"1",
+//       "_version":4,
+//       "status":200,
+//       "found":true
+//     }
+//   },{
+//     "update":{
+//       "_index":"index2",
+//       "_type":"tweet",
+//       "_id":"2",
+//       "_version":4,
+//       "status":200
+//     }
+//   }]
+// }
+type BulkResponse struct {
+	Took   int                            `json:"took,omitempty"`
+	Errors bool                           `json:"errors,omitempty"`
+	Items  []map[string]*BulkResponseItem `json:"items,omitempty"`
+}
+
+// BulkResponseItem is the result of a single bulk request.
+type BulkResponseItem struct {
+	Index   string        `json:"_index,omitempty"`
+	Type    string        `json:"_type,omitempty"`
+	Id      string        `json:"_id,omitempty"`
+	Version int           `json:"_version,omitempty"`
+	Status  int           `json:"status,omitempty"`
+	Found   bool          `json:"found,omitempty"`
+	Error   *ErrorDetails `json:"error,omitempty"`
+}
+
+// Indexed returns all bulk request results of "index" actions.
+func (r *BulkResponse) Indexed() []*BulkResponseItem {
+	return r.ByAction("index")
+}
+
+// Created returns all bulk request results of "create" actions.
+func (r *BulkResponse) Created() []*BulkResponseItem {
+	return r.ByAction("create")
+}
+
+// Updated returns all bulk request results of "update" actions.
+func (r *BulkResponse) Updated() []*BulkResponseItem {
+	return r.ByAction("update")
+}
+
+// Deleted returns all bulk request results of "delete" actions.
+func (r *BulkResponse) Deleted() []*BulkResponseItem {
+	return r.ByAction("delete")
+}
+
+// ByAction returns all bulk request results of a certain action,
+// e.g. "index" or "delete".
+func (r *BulkResponse) ByAction(action string) []*BulkResponseItem {
+	if r.Items == nil {
+		return nil
+	}
+	items := make([]*BulkResponseItem, 0)
+	for _, item := range r.Items {
+		if result, found := item[action]; found {
+			items = append(items, result)
+		}
+	}
+	return items
+}
+
+// ById returns all bulk request results of a given document id,
+// regardless of the action ("index", "delete" etc.).
+func (r *BulkResponse) ById(id string) []*BulkResponseItem {
+	if r.Items == nil {
+		return nil
+	}
+	items := make([]*BulkResponseItem, 0)
+	for _, item := range r.Items {
+		for _, result := range item {
+			if result.Id == id {
+				items = append(items, result)
+			}
+		}
+	}
+	return items
+}
+
+// Failed returns those items of a bulk response that have errors,
+// i.e. those that don't have a status code between 200 and 299.
+func (r *BulkResponse) Failed() []*BulkResponseItem {
+	if r.Items == nil {
+		return nil
+	}
+	errors := make([]*BulkResponseItem, 0)
+	for _, item := range r.Items {
+		for _, result := range item {
+			if !(result.Status >= 200 && result.Status <= 299) {
+				errors = append(errors, result)
+			}
+		}
+	}
+	return errors
+}
+
+// Succeeded returns those items of a bulk response that have no errors,
+// i.e. those have a status code between 200 and 299.
+func (r *BulkResponse) Succeeded() []*BulkResponseItem {
+	if r.Items == nil {
+		return nil
+	}
+	succeeded := make([]*BulkResponseItem, 0)
+	for _, item := range r.Items {
+		for _, result := range item {
+			if result.Status >= 200 && result.Status <= 299 {
+				succeeded = append(succeeded, result)
+			}
+		}
+	}
+	return succeeded
+}

vendor/gopkg.in/olivere/elastic.v3/bulk_delete_request.go

@@ -0,0 +1,158 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// -- Bulk delete request --
+
+// Bulk request to remove a document from Elasticsearch.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
+// for details.
+type BulkDeleteRequest struct {
+	BulkableRequest
+	index       string
+	typ         string
+	id          string
+	parent      string
+	routing     string
+	refresh     *bool
+	version     int64  // default is MATCH_ANY
+	versionType string // default is "internal"
+
+	source []string
+}
+
+// NewBulkDeleteRequest returns a new BulkDeleteRequest.
+func NewBulkDeleteRequest() *BulkDeleteRequest {
+	return &BulkDeleteRequest{}
+}
+
+// Index specifies the Elasticsearch index to use for this delete request.
+// If unspecified, the index set on the BulkService will be used.
+func (r *BulkDeleteRequest) Index(index string) *BulkDeleteRequest {
+	r.index = index
+	r.source = nil
+	return r
+}
+
+// Type specifies the Elasticsearch type to use for this delete request.
+// If unspecified, the type set on the BulkService will be used.
+func (r *BulkDeleteRequest) Type(typ string) *BulkDeleteRequest {
+	r.typ = typ
+	r.source = nil
+	return r
+}
+
+// Id specifies the identifier of the document to delete.
+func (r *BulkDeleteRequest) Id(id string) *BulkDeleteRequest {
+	r.id = id
+	r.source = nil
+	return r
+}
+
+// Parent specifies the parent of the request, which is used in parent/child
+// mappings.
+func (r *BulkDeleteRequest) Parent(parent string) *BulkDeleteRequest {
+	r.parent = parent
+	r.source = nil
+	return r
+}
+
+// Routing specifies a routing value for the request.
+func (r *BulkDeleteRequest) Routing(routing string) *BulkDeleteRequest {
+	r.routing = routing
+	r.source = nil
+	return r
+}
+
+// Refresh indicates whether to update the shards immediately after
+// the delete has been processed. Deleted documents will disappear
+// in search immediately at the cost of slower bulk performance.
+func (r *BulkDeleteRequest) Refresh(refresh bool) *BulkDeleteRequest {
+	r.refresh = &refresh
+	r.source = nil
+	return r
+}
+
+// Version indicates the version to be deleted as part of an optimistic
+// concurrency model.
+func (r *BulkDeleteRequest) Version(version int64) *BulkDeleteRequest {
+	r.version = version
+	r.source = nil
+	return r
+}
+
+// VersionType can be "internal" (default), "external", "external_gte",
+// "external_gt", or "force".
+func (r *BulkDeleteRequest) VersionType(versionType string) *BulkDeleteRequest {
+	r.versionType = versionType
+	r.source = nil
+	return r
+}
+
+// String returns the on-wire representation of the delete request,
+// concatenated as a single string.
+func (r *BulkDeleteRequest) String() string {
+	lines, err := r.Source()
+	if err != nil {
+		return fmt.Sprintf("error: %v", err)
+	}
+	return strings.Join(lines, "\n")
+}
+
+// Source returns the on-wire representation of the delete request,
+// split into an action-and-meta-data line and an (optional) source line.
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
+// for details.
+func (r *BulkDeleteRequest) Source() ([]string, error) {
+	if r.source != nil {
+		return r.source, nil
+	}
+	lines := make([]string, 1)
+
+	source := make(map[string]interface{})
+	deleteCommand := make(map[string]interface{})
+	if r.index != "" {
+		deleteCommand["_index"] = r.index
+	}
+	if r.typ != "" {
+		deleteCommand["_type"] = r.typ
+	}
+	if r.id != "" {
+		deleteCommand["_id"] = r.id
+	}
+	if r.parent != "" {
+		deleteCommand["_parent"] = r.parent
+	}
+	if r.routing != "" {
+		deleteCommand["_routing"] = r.routing
+	}
+	if r.version > 0 {
+		deleteCommand["_version"] = r.version
+	}
+	if r.versionType != "" {
+		deleteCommand["_version_type"] = r.versionType
+	}
+	if r.refresh != nil {
+		deleteCommand["refresh"] = *r.refresh
+	}
+	source["delete"] = deleteCommand
+
+	body, err := json.Marshal(source)
+	if err != nil {
+		return nil, err
+	}
+
+	lines[0] = string(body)
+	r.source = lines
+
+	return lines, nil
+}

vendor/gopkg.in/olivere/elastic.v3/bulk_index_request.go

@@ -0,0 +1,232 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// Bulk request to add a document to Elasticsearch.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
+// for details.
+type BulkIndexRequest struct {
+	BulkableRequest
+	index       string
+	typ         string
+	id          string
+	opType      string
+	routing     string
+	parent      string
+	timestamp   string
+	ttl         int64
+	refresh     *bool
+	version     int64  // default is MATCH_ANY
+	versionType string // default is "internal"
+	doc         interface{}
+
+	source []string
+}
+
+// NewBulkIndexRequest returns a new BulkIndexRequest.
+// The operation type is "index" by default.
+func NewBulkIndexRequest() *BulkIndexRequest {
+	return &BulkIndexRequest{
+		opType: "index",
+	}
+}
+
+// Index specifies the Elasticsearch index to use for this index request.
+// If unspecified, the index set on the BulkService will be used.
+func (r *BulkIndexRequest) Index(index string) *BulkIndexRequest {
+	r.index = index
+	r.source = nil
+	return r
+}
+
+// Type specifies the Elasticsearch type to use for this index request.
+// If unspecified, the type set on the BulkService will be used.
+func (r *BulkIndexRequest) Type(typ string) *BulkIndexRequest {
+	r.typ = typ
+	r.source = nil
+	return r
+}
+
+// Id specifies the identifier of the document to index.
+func (r *BulkIndexRequest) Id(id string) *BulkIndexRequest {
+	r.id = id
+	r.source = nil
+	return r
+}
+
+// OpType specifies if this request should follow create-only or upsert
+// behavior. This follows the OpType of the standard document index API.
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html#operation-type
+// for details.
+func (r *BulkIndexRequest) OpType(opType string) *BulkIndexRequest {
+	r.opType = opType
+	r.source = nil
+	return r
+}
+
+// Routing specifies a routing value for the request.
+func (r *BulkIndexRequest) Routing(routing string) *BulkIndexRequest {
+	r.routing = routing
+	r.source = nil
+	return r
+}
+
+// Parent specifies the identifier of the parent document (if available).
+func (r *BulkIndexRequest) Parent(parent string) *BulkIndexRequest {
+	r.parent = parent
+	r.source = nil
+	return r
+}
+
+// Timestamp can be used to index a document with a timestamp.
+// This is deprecated as of 2.0.0-beta2; you should use a normal date field
+// and set its value explicitly.
+func (r *BulkIndexRequest) Timestamp(timestamp string) *BulkIndexRequest {
+	r.timestamp = timestamp
+	r.source = nil
+	return r
+}
+
+// Ttl (time to live) sets an expiration date for the document. Expired
+// documents will be expunged automatically.
+// This is deprecated as of 2.0.0-beta2 and will be replaced by a different
+// implementation in a future version.
+func (r *BulkIndexRequest) Ttl(ttl int64) *BulkIndexRequest {
+	r.ttl = ttl
+	r.source = nil
+	return r
+}
+
+// Refresh indicates whether to update the shards immediately after
+// the request has been processed. Newly added documents will appear
+// in search immediately at the cost of slower bulk performance.
+func (r *BulkIndexRequest) Refresh(refresh bool) *BulkIndexRequest {
+	r.refresh = &refresh
+	r.source = nil
+	return r
+}
+
+// Version indicates the version of the document as part of an optimistic
+// concurrency model.
+func (r *BulkIndexRequest) Version(version int64) *BulkIndexRequest {
+	r.version = version
+	r.source = nil
+	return r
+}
+
+// VersionType specifies how versions are created. It can be e.g. internal,
+// external, external_gte, or force.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html#index-versioning
+// for details.
+func (r *BulkIndexRequest) VersionType(versionType string) *BulkIndexRequest {
+	r.versionType = versionType
+	r.source = nil
+	return r
+}
+
+// Doc specifies the document to index.
+func (r *BulkIndexRequest) Doc(doc interface{}) *BulkIndexRequest {
+	r.doc = doc
+	r.source = nil
+	return r
+}
+
+// String returns the on-wire representation of the index request,
+// concatenated as a single string.
+func (r *BulkIndexRequest) String() string {
+	lines, err := r.Source()
+	if err != nil {
+		return fmt.Sprintf("error: %v", err)
+	}
+	return strings.Join(lines, "\n")
+}
+
+// Source returns the on-wire representation of the index request,
+// split into an action-and-meta-data line and an (optional) source line.
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
+// for details.
+func (r *BulkIndexRequest) Source() ([]string, error) {
+	// { "index" : { "_index" : "test", "_type" : "type1", "_id" : "1" } }
+	// { "field1" : "value1" }
+
+	if r.source != nil {
+		return r.source, nil
+	}
+
+	lines := make([]string, 2)
+
+	// "index" ...
+	command := make(map[string]interface{})
+	indexCommand := make(map[string]interface{})
+	if r.index != "" {
+		indexCommand["_index"] = r.index
+	}
+	if r.typ != "" {
+		indexCommand["_type"] = r.typ
+	}
+	if r.id != "" {
+		indexCommand["_id"] = r.id
+	}
+	if r.routing != "" {
+		indexCommand["_routing"] = r.routing
+	}
+	if r.parent != "" {
+		indexCommand["_parent"] = r.parent
+	}
+	if r.timestamp != "" {
+		indexCommand["_timestamp"] = r.timestamp
+	}
+	if r.ttl > 0 {
+		indexCommand["_ttl"] = r.ttl
+	}
+	if r.version > 0 {
+		indexCommand["_version"] = r.version
+	}
+	if r.versionType != "" {
+		indexCommand["_version_type"] = r.versionType
+	}
+	if r.refresh != nil {
+		indexCommand["refresh"] = *r.refresh
+	}
+	command[r.opType] = indexCommand
+	line, err := json.Marshal(command)
+	if err != nil {
+		return nil, err
+	}
+	lines[0] = string(line)
+
+	// "field1" ...
+	if r.doc != nil {
+		switch t := r.doc.(type) {
+		default:
+			body, err := json.Marshal(r.doc)
+			if err != nil {
+				return nil, err
+			}
+			lines[1] = string(body)
+		case json.RawMessage:
+			lines[1] = string(t)
+		case *json.RawMessage:
+			lines[1] = string(*t)
+		case string:
+			lines[1] = t
+		case *string:
+			lines[1] = *t
+		}
+	} else {
+		lines[1] = "{}"
+	}
+
+	r.source = lines
+	return lines, nil
+}

vendor/gopkg.in/olivere/elastic.v3/bulk_processor.go

@@ -0,0 +1,541 @@
+// Copyright 2012-2016 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"gopkg.in/olivere/elastic.v3/backoff"
+)
+
+// BulkProcessorService allows to easily process bulk requests. It allows setting
+// policies when to flush new bulk requests, e.g. based on a number of actions,
+// on the size of the actions, and/or to flush periodically. It also allows
+// to control the number of concurrent bulk requests allowed to be executed
+// in parallel.
+//
+// BulkProcessorService, by default, commits either every 1000 requests or when the
+// (estimated) size of the bulk requests exceeds 5 MB. However, it does not
+// commit periodically. BulkProcessorService also does retry by default, using
+// an exponential backoff algorithm.
+//
+// The caller is responsible for setting the index and type on every
+// bulk request added to BulkProcessorService.
+//
+// BulkProcessorService takes ideas from the BulkProcessor of the
+// Elasticsearch Java API as documented in
+// https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-docs-bulk-processor.html.
+type BulkProcessorService struct {
+	c              *Client
+	beforeFn       BulkBeforeFunc
+	afterFn        BulkAfterFunc
+	name           string        // name of processor
+	numWorkers     int           // # of workers (>= 1)
+	bulkActions    int           // # of requests after which to commit
+	bulkSize       int           // # of bytes after which to commit
+	flushInterval  time.Duration // periodic flush interval
+	wantStats      bool          // indicates whether to gather statistics
+	initialTimeout time.Duration // initial wait time before retry on errors
+	maxTimeout     time.Duration // max time to wait for retry on errors
+}
+
+// NewBulkProcessorService creates a new BulkProcessorService.
+func NewBulkProcessorService(client *Client) *BulkProcessorService {
+	return &BulkProcessorService{
+		c:              client,
+		numWorkers:     1,
+		bulkActions:    1000,
+		bulkSize:       5 << 20, // 5 MB
+		initialTimeout: time.Duration(200) * time.Millisecond,
+		maxTimeout:     time.Duration(10000) * time.Millisecond,
+	}
+}
+
+// BulkBeforeFunc defines the signature of callbacks that are executed
+// before a commit to Elasticsearch.
+type BulkBeforeFunc func(executionId int64, requests []BulkableRequest)
+
+// BulkAfterFunc defines the signature of callbacks that are executed
+// after a commit to Elasticsearch. The err parameter signals an error.
+type BulkAfterFunc func(executionId int64, requests []BulkableRequest, response *BulkResponse, err error)
+
+// Before specifies a function to be executed before bulk requests get comitted
+// to Elasticsearch.
+func (s *BulkProcessorService) Before(fn BulkBeforeFunc) *BulkProcessorService {
+	s.beforeFn = fn
+	return s
+}
+
+// After specifies a function to be executed when bulk requests have been
+// comitted to Elasticsearch. The After callback executes both when the
+// commit was successful as well as on failures.
+func (s *BulkProcessorService) After(fn BulkAfterFunc) *BulkProcessorService {
+	s.afterFn = fn
+	return s
+}
+
+// Name is an optional name to identify this bulk processor.
+func (s *BulkProcessorService) Name(name string) *BulkProcessorService {
+	s.name = name
+	return s
+}
+
+// Workers is the number of concurrent workers allowed to be
+// executed. Defaults to 1 and must be greater or equal to 1.
+func (s *BulkProcessorService) Workers(num int) *BulkProcessorService {
+	s.numWorkers = num
+	return s
+}
+
+// BulkActions specifies when to flush based on the number of actions
+// currently added. Defaults to 1000 and can be set to -1 to be disabled.
+func (s *BulkProcessorService) BulkActions(bulkActions int) *BulkProcessorService {
+	s.bulkActions = bulkActions
+	return s
+}
+
+// BulkSize specifies when to flush based on the size (in bytes) of the actions
+// currently added. Defaults to 5 MB and can be set to -1 to be disabled.
+func (s *BulkProcessorService) BulkSize(bulkSize int) *BulkProcessorService {
+	s.bulkSize = bulkSize
+	return s
+}
+
+// FlushInterval specifies when to flush at the end of the given interval.
+// This is disabled by default. If you want the bulk processor to
+// operate completely asynchronously, set both BulkActions and BulkSize to
+// -1 and set the FlushInterval to a meaningful interval.
+func (s *BulkProcessorService) FlushInterval(interval time.Duration) *BulkProcessorService {
+	s.flushInterval = interval
+	return s
+}
+
+// Stats tells bulk processor to gather stats while running.
+// Use Stats to return the stats. This is disabled by default.
+func (s *BulkProcessorService) Stats(wantStats bool) *BulkProcessorService {
+	s.wantStats = wantStats
+	return s
+}
+
+// Do creates a new BulkProcessor and starts it.
+// Consider the BulkProcessor as a running instance that accepts bulk requests
+// and commits them to Elasticsearch, spreading the work across one or more
+// workers.
+//
+// You can interoperate with the BulkProcessor returned by Do, e.g. Start and
+// Stop (or Close) it.
+//
+// Calling Do several times returns new BulkProcessors. You probably don't
+// want to do this. BulkProcessorService implements just a builder pattern.
+func (s *BulkProcessorService) Do() (*BulkProcessor, error) {
+	p := newBulkProcessor(
+		s.c,
+		s.beforeFn,
+		s.afterFn,
+		s.name,
+		s.numWorkers,
+		s.bulkActions,
+		s.bulkSize,
+		s.flushInterval,
+		s.wantStats,
+		s.initialTimeout,
+		s.maxTimeout)
+
+	err := p.Start()
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+// -- Bulk Processor Statistics --
+
+// BulkProcessorStats contains various statistics of a bulk processor
+// while it is running. Use the Stats func to return it while running.
+type BulkProcessorStats struct {
+	Flushed   int64 // number of times the flush interval has been invoked
+	Committed int64 // # of times workers committed bulk requests
+	Indexed   int64 // # of requests indexed
+	Created   int64 // # of requests that ES reported as creates (201)
+	Updated   int64 // # of requests that ES reported as updates
+	Deleted   int64 // # of requests that ES reported as deletes
+	Succeeded int64 // # of requests that ES reported as successful
+	Failed    int64 // # of requests that ES reported as failed
+
+	Workers []*BulkProcessorWorkerStats // stats for each worker
+}
+
+// BulkProcessorWorkerStats represents per-worker statistics.
+type BulkProcessorWorkerStats struct {
+	Queued       int64         // # of requests queued in this worker
+	LastDuration time.Duration // duration of last commit
+}
+
+// newBulkProcessorStats initializes and returns a BulkProcessorStats struct.
+func newBulkProcessorStats(workers int) *BulkProcessorStats {
+	stats := &BulkProcessorStats{
+		Workers: make([]*BulkProcessorWorkerStats, workers),
+	}
+	for i := 0; i < workers; i++ {
+		stats.Workers[i] = &BulkProcessorWorkerStats{}
+	}
+	return stats
+}
+
+func (st *BulkProcessorStats) dup() *BulkProcessorStats {
+	dst := new(BulkProcessorStats)
+	dst.Flushed = st.Flushed
+	dst.Committed = st.Committed
+	dst.Indexed = st.Indexed
+	dst.Created = st.Created
+	dst.Updated = st.Updated
+	dst.Deleted = st.Deleted
+	dst.Succeeded = st.Succeeded
+	dst.Failed = st.Failed
+	for _, src := range st.Workers {
+		dst.Workers = append(dst.Workers, src.dup())
+	}
+	return dst
+}
+
+func (st *BulkProcessorWorkerStats) dup() *BulkProcessorWorkerStats {
+	dst := new(BulkProcessorWorkerStats)
+	dst.Queued = st.Queued
+	dst.LastDuration = st.LastDuration
+	return dst
+}
+
+// -- Bulk Processor --
+
+// BulkProcessor encapsulates a task that accepts bulk requests and
+// orchestrates committing them to Elasticsearch via one or more workers.
+//
+// BulkProcessor is returned by setting up a BulkProcessorService and
+// calling the Do method.
+type BulkProcessor struct {
+	c              *Client
+	beforeFn       BulkBeforeFunc
+	afterFn        BulkAfterFunc
+	name           string
+	bulkActions    int
+	bulkSize       int
+	numWorkers     int
+	executionId    int64
+	requestsC      chan BulkableRequest
+	workerWg       sync.WaitGroup
+	workers        []*bulkWorker
+	flushInterval  time.Duration
+	flusherStopC   chan struct{}
+	wantStats      bool
+	initialTimeout time.Duration // initial wait time before retry on errors
+	maxTimeout     time.Duration // max time to wait for retry on errors
+
+	startedMu sync.Mutex // guards the following block
+	started   bool
+
+	statsMu sync.Mutex // guards the following block
+	stats   *BulkProcessorStats
+}
+
+func newBulkProcessor(
+	client *Client,
+	beforeFn BulkBeforeFunc,
+	afterFn BulkAfterFunc,
+	name string,
+	numWorkers int,
+	bulkActions int,
+	bulkSize int,
+	flushInterval time.Duration,
+	wantStats bool,
+	initialTimeout time.Duration,
+	maxTimeout time.Duration) *BulkProcessor {
+	return &BulkProcessor{
+		c:              client,
+		beforeFn:       beforeFn,
+		afterFn:        afterFn,
+		name:           name,
+		numWorkers:     numWorkers,
+		bulkActions:    bulkActions,
+		bulkSize:       bulkSize,
+		flushInterval:  flushInterval,
+		wantStats:      wantStats,
+		initialTimeout: initialTimeout,
+		maxTimeout:     maxTimeout,
+	}
+}
+
+// Start starts the bulk processor. If the processor is already started,
+// nil is returned.
+func (p *BulkProcessor) Start() error {
+	p.startedMu.Lock()
+	defer p.startedMu.Unlock()
+
+	if p.started {
+		return nil
+	}
+
+	// We must have at least one worker.
+	if p.numWorkers < 1 {
+		p.numWorkers = 1
+	}
+
+	p.requestsC = make(chan BulkableRequest)
+	p.executionId = 0
+	p.stats = newBulkProcessorStats(p.numWorkers)
+
+	// Create and start up workers.
+	p.workers = make([]*bulkWorker, p.numWorkers)
+	for i := 0; i < p.numWorkers; i++ {
+		p.workerWg.Add(1)
+		p.workers[i] = newBulkWorker(p, i)
+		go p.workers[i].work()
+	}
+
+	// Start the ticker for flush (if enabled)
+	if int64(p.flushInterval) > 0 {
+		p.flusherStopC = make(chan struct{})
+		go p.flusher(p.flushInterval)
+	}
+
+	p.started = true
+
+	return nil
+}
+
+// Stop is an alias for Close.
+func (p *BulkProcessor) Stop() error {
+	return p.Close()
+}
+
+// Close stops the bulk processor previously started with Do.
+// If it is already stopped, this is a no-op and nil is returned.
+//
+// By implementing Close, BulkProcessor implements the io.Closer interface.
+func (p *BulkProcessor) Close() error {
+	p.startedMu.Lock()
+	defer p.startedMu.Unlock()
+
+	// Already stopped? Do nothing.
+	if !p.started {
+		return nil
+	}
+
+	// Stop flusher (if enabled)
+	if p.flusherStopC != nil {
+		p.flusherStopC <- struct{}{}
+		<-p.flusherStopC
+		close(p.flusherStopC)
+		p.flusherStopC = nil
+	}
+
+	// Stop all workers.
+	close(p.requestsC)
+	p.workerWg.Wait()
+
+	p.started = false
+
+	return nil
+}
+
+// Stats returns the latest bulk processor statistics.
+// Collecting stats must be enabled first by calling Stats(true) on
+// the service that created this processor.
+func (p *BulkProcessor) Stats() BulkProcessorStats {
+	p.statsMu.Lock()
+	defer p.statsMu.Unlock()
+	return *p.stats.dup()
+}
+
+// Add adds a single request to commit by the BulkProcessorService.
+//
+// The caller is responsible for setting the index and type on the request.
+func (p *BulkProcessor) Add(request BulkableRequest) {
+	p.requestsC <- request
+}
+
+// Flush manually asks all workers to commit their outstanding requests.
+// It returns only when all workers acknowledge completion.
+func (p *BulkProcessor) Flush() error {
+	p.statsMu.Lock()
+	p.stats.Flushed++
+	p.statsMu.Unlock()
+
+	for _, w := range p.workers {
+		w.flushC <- struct{}{}
+		<-w.flushAckC // wait for completion
+	}
+	return nil
+}
+
+// flusher is a single goroutine that periodically asks all workers to
+// commit their outstanding bulk requests. It is only started if
+// FlushInterval is greater than 0.
+func (p *BulkProcessor) flusher(interval time.Duration) {
+	ticker := time.NewTicker(interval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C: // Periodic flush
+			p.Flush() // TODO swallow errors here?
+
+		case <-p.flusherStopC:
+			p.flusherStopC <- struct{}{}
+			return
+		}
+	}
+}
+
+// -- Bulk Worker --
+
+// bulkWorker encapsulates a single worker, running in a goroutine,
+// receiving bulk requests and eventually committing them to Elasticsearch.
+// It is strongly bound to a BulkProcessor.
+type bulkWorker struct {
+	p           *BulkProcessor
+	i           int
+	bulkActions int
+	bulkSize    int
+	service     *BulkService
+	flushC      chan struct{}
+	flushAckC   chan struct{}
+}
+
+// newBulkWorker creates a new bulkWorker instance.
+func newBulkWorker(p *BulkProcessor, i int) *bulkWorker {
+	return &bulkWorker{
+		p:           p,
+		i:           i,
+		bulkActions: p.bulkActions,
+		bulkSize:    p.bulkSize,
+		service:     NewBulkService(p.c),
+		flushC:      make(chan struct{}),
+		flushAckC:   make(chan struct{}),
+	}
+}
+
+// work waits for bulk requests and manual flush calls on the respective
+// channels and is invoked as a goroutine when the bulk processor is started.
+func (w *bulkWorker) work() {
+	defer func() {
+		w.p.workerWg.Done()
+		close(w.flushAckC)
+		close(w.flushC)
+	}()
+
+	var stop bool
+	for !stop {
+		select {
+		case req, open := <-w.p.requestsC:
+			if open {
+				// Received a new request
+				w.service.Add(req)
+				if w.commitRequired() {
+					w.commit() // TODO swallow errors here?
+				}
+			} else {
+				// Channel closed: Stop.
+				stop = true
+				if w.service.NumberOfActions() > 0 {
+					w.commit() // TODO swallow errors here?
+				}
+			}
+
+		case <-w.flushC:
+			// Commit outstanding requests
+			if w.service.NumberOfActions() > 0 {
+				w.commit() // TODO swallow errors here?
+			}
+			w.flushAckC <- struct{}{}
+		}
+	}
+}
+
+// commit commits the bulk requests in the given service,
+// invoking callbacks as specified.
+func (w *bulkWorker) commit() error {
+	var res *BulkResponse
+
+	// commitFunc will commit bulk requests and, on failure, be retried
+	// via exponential backoff
+	commitFunc := func() error {
+		var err error
+		res, err = w.service.Do()
+		return err
+	}
+	// notifyFunc will be called if retry fails
+	notifyFunc := func(err error, d time.Duration) {
+		w.p.c.errorf("elastic: bulk processor %q failed but will retry in %v: %v", w.p.name, d, err)
+	}
+
+	id := atomic.AddInt64(&w.p.executionId, 1)
+
+	// Update # documents in queue before eventual retries
+	w.p.statsMu.Lock()
+	if w.p.wantStats {
+		w.p.stats.Workers[w.i].Queued = int64(len(w.service.requests))
+	}
+	w.p.statsMu.Unlock()
+
+	// Save requests because they will be reset in commitFunc
+	reqs := w.service.requests
+
+	// Invoke before callback
+	if w.p.beforeFn != nil {
+		w.p.beforeFn(id, reqs)
+	}
+
+	// Commit bulk requests
+	policy := backoff.NewExponentialBackoff(w.p.initialTimeout, w.p.maxTimeout).SendStop(true)
+	err := backoff.RetryNotify(commitFunc, policy, notifyFunc)
+	w.updateStats(res)
+	if err != nil {
+		w.p.c.errorf("elastic: bulk processor %q failed: %v", w.p.name, err)
+	}
+
+	// Invoke after callback
+	if w.p.afterFn != nil {
+		w.p.afterFn(id, reqs, res, err)
+	}
+
+	return err
+}
+
+func (w *bulkWorker) updateStats(res *BulkResponse) {
+	// Update stats
+	if res != nil {
+		w.p.statsMu.Lock()
+		if w.p.wantStats {
+			w.p.stats.Committed++
+			if res != nil {
+				w.p.stats.Indexed += int64(len(res.Indexed()))
+				w.p.stats.Created += int64(len(res.Created()))
+				w.p.stats.Updated += int64(len(res.Updated()))
+				w.p.stats.Deleted += int64(len(res.Deleted()))
+				w.p.stats.Succeeded += int64(len(res.Succeeded()))
+				w.p.stats.Failed += int64(len(res.Failed()))
+			}
+			w.p.stats.Workers[w.i].Queued = int64(len(w.service.requests))
+			w.p.stats.Workers[w.i].LastDuration = time.Duration(int64(res.Took)) * time.Millisecond
+		}
+		w.p.statsMu.Unlock()
+	}
+}
+
+// commitRequired returns true if the service has to commit its
+// bulk requests. This can be either because the number of actions
+// or the estimated size in bytes is larger than specified in the
+// BulkProcessorService.
+func (w *bulkWorker) commitRequired() bool {
+	if w.bulkActions >= 0 && w.service.NumberOfActions() >= w.bulkActions {
+		return true
+	}
+	if w.bulkSize >= 0 && w.service.EstimatedSizeInBytes() >= int64(w.bulkSize) {
+		return true
+	}
+	return false
+}

vendor/gopkg.in/olivere/elastic.v3/bulk_request.go

@@ -0,0 +1,17 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+)
+
+// -- Bulkable request (index/update/delete) --
+
+// Generic interface to bulkable requests.
+type BulkableRequest interface {
+	fmt.Stringer
+	Source() ([]string, error)
+}

vendor/gopkg.in/olivere/elastic.v3/bulk_update_request.go

@@ -0,0 +1,280 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// Bulk request to update a document in Elasticsearch.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
+// for details.
+type BulkUpdateRequest struct {
+	BulkableRequest
+	index string
+	typ   string
+	id    string
+
+	routing         string
+	parent          string
+	script          *Script
+	version         int64  // default is MATCH_ANY
+	versionType     string // default is "internal"
+	retryOnConflict *int
+	refresh         *bool
+	upsert          interface{}
+	docAsUpsert     *bool
+	doc             interface{}
+	ttl             int64
+	timestamp       string
+
+	source []string
+}
+
+// NewBulkUpdateRequest returns a new BulkUpdateRequest.
+func NewBulkUpdateRequest() *BulkUpdateRequest {
+	return &BulkUpdateRequest{}
+}
+
+// Index specifies the Elasticsearch index to use for this update request.
+// If unspecified, the index set on the BulkService will be used.
+func (r *BulkUpdateRequest) Index(index string) *BulkUpdateRequest {
+	r.index = index
+	r.source = nil
+	return r
+}
+
+// Type specifies the Elasticsearch type to use for this update request.
+// If unspecified, the type set on the BulkService will be used.
+func (r *BulkUpdateRequest) Type(typ string) *BulkUpdateRequest {
+	r.typ = typ
+	r.source = nil
+	return r
+}
+
+// Id specifies the identifier of the document to update.
+func (r *BulkUpdateRequest) Id(id string) *BulkUpdateRequest {
+	r.id = id
+	r.source = nil
+	return r
+}
+
+// Routing specifies a routing value for the request.
+func (r *BulkUpdateRequest) Routing(routing string) *BulkUpdateRequest {
+	r.routing = routing
+	r.source = nil
+	return r
+}
+
+// Parent specifies the identifier of the parent document (if available).
+func (r *BulkUpdateRequest) Parent(parent string) *BulkUpdateRequest {
+	r.parent = parent
+	r.source = nil
+	return r
+}
+
+// Script specifies an update script.
+// See https://www.elastic.co/guide/en/elasticsearch/reference/2.x/docs-bulk.html#bulk-update
+// and https://www.elastic.co/guide/en/elasticsearch/reference/2.x/modules-scripting.html
+// for details.
+func (r *BulkUpdateRequest) Script(script *Script) *BulkUpdateRequest {
+	r.script = script
+	r.source = nil
+	return r
+}
+
+// RetryOnConflict specifies how often to retry in case of a version conflict.
+func (r *BulkUpdateRequest) RetryOnConflict(retryOnConflict int) *BulkUpdateRequest {
+	r.retryOnConflict = &retryOnConflict
+	r.source = nil
+	return r
+}
+
+// Version indicates the version of the document as part of an optimistic
+// concurrency model.
+func (r *BulkUpdateRequest) Version(version int64) *BulkUpdateRequest {
+	r.version = version
+	r.source = nil
+	return r
+}
+
+// VersionType can be "internal" (default), "external", "external_gte",
+// "external_gt", or "force".
+func (r *BulkUpdateRequest) VersionType(versionType string) *BulkUpdateRequest {
+	r.versionType = versionType
+	r.source = nil
+	return r
+}
+
+// Refresh indicates whether to update the shards immediately after
+// the request has been processed. Updated documents will appear
+// in search immediately at the cost of slower bulk performance.
+func (r *BulkUpdateRequest) Refresh(refresh bool) *BulkUpdateRequest {
+	r.refresh = &refresh
+	r.source = nil
+	return r
+}
+
+// Doc specifies the updated document.
+func (r *BulkUpdateRequest) Doc(doc interface{}) *BulkUpdateRequest {
+	r.doc = doc
+	r.source = nil
+	return r
+}
+
+// DocAsUpsert indicates whether the contents of Doc should be used as
+// the Upsert value.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/2.x/docs-update.html#_literal_doc_as_upsert_literal
+// for details.
+func (r *BulkUpdateRequest) DocAsUpsert(docAsUpsert bool) *BulkUpdateRequest {
+	r.docAsUpsert = &docAsUpsert
+	r.source = nil
+	return r
+}
+
+// Upsert specifies the document to use for upserts. It will be used for
+// create if the original document does not exist.
+func (r *BulkUpdateRequest) Upsert(doc interface{}) *BulkUpdateRequest {
+	r.upsert = doc
+	r.source = nil
+	return r
+}
+
+// Ttl specifies the time to live, and optional expiry time.
+// This is deprecated as of 2.0.0-beta2.
+func (r *BulkUpdateRequest) Ttl(ttl int64) *BulkUpdateRequest {
+	r.ttl = ttl
+	r.source = nil
+	return r
+}
+
+// Timestamp specifies a timestamp for the document.
+// This is deprecated as of 2.0.0-beta2.
+func (r *BulkUpdateRequest) Timestamp(timestamp string) *BulkUpdateRequest {
+	r.timestamp = timestamp
+	r.source = nil
+	return r
+}
+
+// String returns the on-wire representation of the update request,
+// concatenated as a single string.
+func (r *BulkUpdateRequest) String() string {
+	lines, err := r.Source()
+	if err != nil {
+		return fmt.Sprintf("error: %v", err)
+	}
+	return strings.Join(lines, "\n")
+}
+
+func (r *BulkUpdateRequest) getSourceAsString(data interface{}) (string, error) {
+	switch t := data.(type) {
+	default:
+		body, err := json.Marshal(data)
+		if err != nil {
+			return "", err
+		}
+		return string(body), nil
+	case json.RawMessage:
+		return string(t), nil
+	case *json.RawMessage:
+		return string(*t), nil
+	case string:
+		return t, nil
+	case *string:
+		return *t, nil
+	}
+}
+
+// Source returns the on-wire representation of the update request,
+// split into an action-and-meta-data line and an (optional) source line.
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
+// for details.
+func (r BulkUpdateRequest) Source() ([]string, error) {
+	// { "update" : { "_index" : "test", "_type" : "type1", "_id" : "1", ... } }
+	// { "doc" : { "field1" : "value1", ... } }
+	// or
+	// { "update" : { "_index" : "test", "_type" : "type1", "_id" : "1", ... } }
+	// { "script" : { ... } }
+
+	if r.source != nil {
+		return r.source, nil
+	}
+
+	lines := make([]string, 2)
+
+	// "update" ...
+	command := make(map[string]interface{})
+	updateCommand := make(map[string]interface{})
+	if r.index != "" {
+		updateCommand["_index"] = r.index
+	}
+	if r.typ != "" {
+		updateCommand["_type"] = r.typ
+	}
+	if r.id != "" {
+		updateCommand["_id"] = r.id
+	}
+	if r.routing != "" {
+		updateCommand["_routing"] = r.routing
+	}
+	if r.parent != "" {
+		updateCommand["_parent"] = r.parent
+	}
+	if r.timestamp != "" {
+		updateCommand["_timestamp"] = r.timestamp
+	}
+	if r.ttl > 0 {
+		updateCommand["_ttl"] = r.ttl
+	}
+	if r.version > 0 {
+		updateCommand["_version"] = r.version
+	}
+	if r.versionType != "" {
+		updateCommand["_version_type"] = r.versionType
+	}
+	if r.refresh != nil {
+		updateCommand["refresh"] = *r.refresh
+	}
+	if r.retryOnConflict != nil {
+		updateCommand["_retry_on_conflict"] = *r.retryOnConflict
+	}
+	command["update"] = updateCommand
+	line, err := json.Marshal(command)
+	if err != nil {
+		return nil, err
+	}
+	lines[0] = string(line)
+
+	// 2nd line: {"doc" : { ... }} or {"script": {...}}
+	source := make(map[string]interface{})
+	if r.docAsUpsert != nil {
+		source["doc_as_upsert"] = *r.docAsUpsert
+	}
+	if r.upsert != nil {
+		source["upsert"] = r.upsert
+	}
+	if r.doc != nil {
+		// {"doc":{...}}
+		source["doc"] = r.doc
+	} else if r.script != nil {
+		// {"script":...}
+		src, err := r.script.Source()
+		if err != nil {
+			return nil, err
+		}
+		source["script"] = src
+	}
+	lines[1], err = r.getSourceAsString(source)
+	if err != nil {
+		return nil, err
+	}
+
+	r.source = lines
+	return lines, nil
+}

vendor/gopkg.in/olivere/elastic.v3/canonicalize.go

@@ -0,0 +1,38 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import "net/url"
+
+// canonicalize takes a list of URLs and returns its canonicalized form, i.e.
+// remove anything but scheme, userinfo, host, path, and port.
+// It also removes all trailing slashes. It also skips invalid URLs or
+// URLs that do not use protocol http or https.
+//
+// Example:
+// http://127.0.0.1:9200/?query=1 -> http://127.0.0.1:9200
+// http://127.0.0.1:9200/db1/ -> http://127.0.0.1:9200/db1
+// 127.0.0.1:9200 -> http://127.0.0.1:9200
+func canonicalize(rawurls ...string) []string {
+	var canonicalized []string
+	for _, rawurl := range rawurls {
+		u, err := url.Parse(rawurl)
+		if err == nil {
+			if len(u.Scheme) == 0 {
+				u.Scheme = DefaultScheme
+			}
+			if u.Scheme == "http" || u.Scheme == "https" {
+				// Trim trailing slashes
+				for len(u.Path) > 0 && u.Path[len(u.Path)-1] == '/' {
+					u.Path = u.Path[0 : len(u.Path)-1]
+				}
+				u.Fragment = ""
+				u.RawQuery = ""
+				canonicalized = append(canonicalized, u.String())
+			}
+		}
+	}
+	return canonicalized
+}

vendor/gopkg.in/olivere/elastic.v3/clear_scroll.go

@@ -0,0 +1,101 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+)
+
+// ClearScrollService clears one or more scroll contexts by their ids.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-scroll.html#_clear_scroll_api
+// for details.
+type ClearScrollService struct {
+	client   *Client
+	pretty   bool
+	scrollId []string
+}
+
+// NewClearScrollService creates a new ClearScrollService.
+func NewClearScrollService(client *Client) *ClearScrollService {
+	return &ClearScrollService{
+		client:   client,
+		scrollId: make([]string, 0),
+	}
+}
+
+// ScrollId is a list of scroll IDs to clear.
+// Use _all to clear all search contexts.
+func (s *ClearScrollService) ScrollId(scrollIds ...string) *ClearScrollService {
+	s.scrollId = append(s.scrollId, scrollIds...)
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *ClearScrollService) Pretty(pretty bool) *ClearScrollService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *ClearScrollService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path := "/_search/scroll/"
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *ClearScrollService) Validate() error {
+	var invalid []string
+	if len(s.scrollId) == 0 {
+		invalid = append(invalid, "ScrollId")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *ClearScrollService) Do() (*ClearScrollResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Setup HTTP request body
+	body := strings.Join(s.scrollId, ",")
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("DELETE", path, params, body)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(ClearScrollResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// ClearScrollResponse is the response of ClearScrollService.Do.
+type ClearScrollResponse struct {
+}

vendor/gopkg.in/olivere/elastic.v3/cluster_health.go

@@ -0,0 +1,243 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// ClusterHealthService allows to get a very simple status on the health of the cluster.
+//
+// See http://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-health.html
+// for details.
+type ClusterHealthService struct {
+	client                  *Client
+	pretty                  bool
+	indices                 []string
+	level                   string
+	local                   *bool
+	masterTimeout           string
+	timeout                 string
+	waitForActiveShards     *int
+	waitForNodes            string
+	waitForRelocatingShards *int
+	waitForStatus           string
+}
+
+// NewClusterHealthService creates a new ClusterHealthService.
+func NewClusterHealthService(client *Client) *ClusterHealthService {
+	return &ClusterHealthService{
+		client:  client,
+		indices: make([]string, 0),
+	}
+}
+
+// Index limits the information returned to specific indices.
+func (s *ClusterHealthService) Index(indices ...string) *ClusterHealthService {
+	s.indices = append(s.indices, indices...)
+	return s
+}
+
+// Level specifies the level of detail for returned information.
+func (s *ClusterHealthService) Level(level string) *ClusterHealthService {
+	s.level = level
+	return s
+}
+
+// Local indicates whether to return local information. If it is true,
+// we do not retrieve the state from master node (default: false).
+func (s *ClusterHealthService) Local(local bool) *ClusterHealthService {
+	s.local = &local
+	return s
+}
+
+// MasterTimeout specifies an explicit operation timeout for connection to master node.
+func (s *ClusterHealthService) MasterTimeout(masterTimeout string) *ClusterHealthService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// Timeout specifies an explicit operation timeout.
+func (s *ClusterHealthService) Timeout(timeout string) *ClusterHealthService {
+	s.timeout = timeout
+	return s
+}
+
+// WaitForActiveShards can be used to wait until the specified number of shards are active.
+func (s *ClusterHealthService) WaitForActiveShards(waitForActiveShards int) *ClusterHealthService {
+	s.waitForActiveShards = &waitForActiveShards
+	return s
+}
+
+// WaitForNodes can be used to wait until the specified number of nodes are available.
+// Example: "12" to wait for exact values, ">12" and "<12" for ranges.
+func (s *ClusterHealthService) WaitForNodes(waitForNodes string) *ClusterHealthService {
+	s.waitForNodes = waitForNodes
+	return s
+}
+
+// WaitForRelocatingShards can be used to wait until the specified number of relocating shards is finished.
+func (s *ClusterHealthService) WaitForRelocatingShards(waitForRelocatingShards int) *ClusterHealthService {
+	s.waitForRelocatingShards = &waitForRelocatingShards
+	return s
+}
+
+// WaitForStatus can be used to wait until the cluster is in a specific state.
+// Valid values are: green, yellow, or red.
+func (s *ClusterHealthService) WaitForStatus(waitForStatus string) *ClusterHealthService {
+	s.waitForStatus = waitForStatus
+	return s
+}
+
+// WaitForGreenStatus will wait for the "green" state.
+func (s *ClusterHealthService) WaitForGreenStatus() *ClusterHealthService {
+	return s.WaitForStatus("green")
+}
+
+// WaitForYellowStatus will wait for the "yellow" state.
+func (s *ClusterHealthService) WaitForYellowStatus() *ClusterHealthService {
+	return s.WaitForStatus("yellow")
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *ClusterHealthService) Pretty(pretty bool) *ClusterHealthService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *ClusterHealthService) buildURL() (string, url.Values, error) {
+	// Build URL
+	var err error
+	var path string
+	if len(s.indices) > 0 {
+		path, err = uritemplates.Expand("/_cluster/health/{index}", map[string]string{
+			"index": strings.Join(s.indices, ","),
+		})
+	} else {
+		path = "/_cluster/health"
+	}
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.level != "" {
+		params.Set("level", s.level)
+	}
+	if s.local != nil {
+		params.Set("local", fmt.Sprintf("%v", *s.local))
+	}
+	if s.masterTimeout != "" {
+		params.Set("master_timeout", s.masterTimeout)
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+	if s.waitForActiveShards != nil {
+		params.Set("wait_for_active_shards", fmt.Sprintf("%v", s.waitForActiveShards))
+	}
+	if s.waitForNodes != "" {
+		params.Set("wait_for_nodes", s.waitForNodes)
+	}
+	if s.waitForRelocatingShards != nil {
+		params.Set("wait_for_relocating_shards", fmt.Sprintf("%v", s.waitForRelocatingShards))
+	}
+	if s.waitForStatus != "" {
+		params.Set("wait_for_status", s.waitForStatus)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *ClusterHealthService) Validate() error {
+	return nil
+}
+
+// Do executes the operation.
+func (s *ClusterHealthService) Do() (*ClusterHealthResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("GET", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(ClusterHealthResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// ClusterHealthResponse is the response of ClusterHealthService.Do.
+type ClusterHealthResponse struct {
+	ClusterName                    string  `json:"cluster_name"`
+	Status                         string  `json:"status"`
+	TimedOut                       bool    `json:"timed_out"`
+	NumberOfNodes                  int     `json:"number_of_nodes"`
+	NumberOfDataNodes              int     `json:"number_of_data_nodes"`
+	ActivePrimaryShards            int     `json:"active_primary_shards"`
+	ActiveShards                   int     `json:"active_shards"`
+	RelocatingShards               int     `json:"relocating_shards"`
+	InitializingShards             int     `json:"initializing_shards"`
+	UnassignedShards               int     `json:"unassigned_shards"`
+	DelayedUnassignedShards        int     `json:"delayed_unassigned_shards"`
+	NumberOfPendingTasks           int     `json:"number_of_pending_tasks"`
+	NumberOfInFlightFetch          int     `json:"number_of_in_flight_fetch"`
+	TaskMaxWaitTimeInQueueInMillis int     `json:"task_max_waiting_in_queue_millis"`
+	ActiveShardsPercentAsNumber    float64 `json:"active_shards_percent_as_number"`
+
+	// Validation failures -> index name -> array of validation failures
+	ValidationFailures []map[string][]string `json:"validation_failures"`
+
+	// Index name -> index health
+	Indices map[string]*ClusterIndexHealth `json:"indices"`
+}
+
+// ClusterIndexHealth will be returned as part of ClusterHealthResponse.
+type ClusterIndexHealth struct {
+	Status              string `json:"status"`
+	NumberOfShards      int    `json:"number_of_shards"`
+	NumberOfReplicas    int    `json:"number_of_replicas"`
+	ActivePrimaryShards int    `json:"active_primary_shards"`
+	ActiveShards        int    `json:"active_shards"`
+	RelocatingShards    int    `json:"relocating_shards"`
+	InitializingShards  int    `json:"initializing_shards"`
+	UnassignedShards    int    `json:"unassigned_shards"`
+	// Validation failures
+	ValidationFailures []string `json:"validation_failures"`
+	// Shards by id, e.g. "0" or "1"
+	Shards map[string]*ClusterShardHealth `json:"shards"`
+}
+
+// ClusterShardHealth will be returned as part of ClusterHealthResponse.
+type ClusterShardHealth struct {
+	Status             string `json:"status"`
+	PrimaryActive      bool   `json:"primary_active"`
+	ActiveShards       int    `json:"active_shards"`
+	RelocatingShards   int    `json:"relocating_shards"`
+	InitializingShards int    `json:"initializing_shards"`
+	UnassignedShards   int    `json:"unassigned_shards"`
+}

vendor/gopkg.in/olivere/elastic.v3/cluster_state.go

@@ -0,0 +1,283 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// ClusterStateService allows to get a comprehensive state information of the whole cluster.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-state.html
+// for details.
+type ClusterStateService struct {
+	client            *Client
+	pretty            bool
+	indices           []string
+	metrics           []string
+	allowNoIndices    *bool
+	expandWildcards   string
+	flatSettings      *bool
+	ignoreUnavailable *bool
+	local             *bool
+	masterTimeout     string
+}
+
+// NewClusterStateService creates a new ClusterStateService.
+func NewClusterStateService(client *Client) *ClusterStateService {
+	return &ClusterStateService{
+		client:  client,
+		indices: make([]string, 0),
+		metrics: make([]string, 0),
+	}
+}
+
+// Index is a list of index names. Use _all or an empty string to
+// perform the operation on all indices.
+func (s *ClusterStateService) Index(indices ...string) *ClusterStateService {
+	s.indices = append(s.indices, indices...)
+	return s
+}
+
+// Metric limits the information returned to the specified metric.
+// It can be one of: version, master_node, nodes, routing_table, metadata,
+// blocks, or customs.
+func (s *ClusterStateService) Metric(metrics ...string) *ClusterStateService {
+	s.metrics = append(s.metrics, metrics...)
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices
+// expression resolves into no concrete indices.
+// (This includes `_all` string or when no indices have been specified).
+func (s *ClusterStateService) AllowNoIndices(allowNoIndices bool) *ClusterStateService {
+	s.allowNoIndices = &allowNoIndices
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both..
+func (s *ClusterStateService) ExpandWildcards(expandWildcards string) *ClusterStateService {
+	s.expandWildcards = expandWildcards
+	return s
+}
+
+// FlatSettings, when set, returns settings in flat format (default: false).
+func (s *ClusterStateService) FlatSettings(flatSettings bool) *ClusterStateService {
+	s.flatSettings = &flatSettings
+	return s
+}
+
+// IgnoreUnavailable indicates whether specified concrete indices should be
+// ignored when unavailable (missing or closed).
+func (s *ClusterStateService) IgnoreUnavailable(ignoreUnavailable bool) *ClusterStateService {
+	s.ignoreUnavailable = &ignoreUnavailable
+	return s
+}
+
+// Local indicates whether to return local information. When set, it does not
+// retrieve the state from master node (default: false).
+func (s *ClusterStateService) Local(local bool) *ClusterStateService {
+	s.local = &local
+	return s
+}
+
+// MasterTimeout specifies timeout for connection to master.
+func (s *ClusterStateService) MasterTimeout(masterTimeout string) *ClusterStateService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *ClusterStateService) Pretty(pretty bool) *ClusterStateService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *ClusterStateService) buildURL() (string, url.Values, error) {
+	// Build URL
+	metrics := strings.Join(s.metrics, ",")
+	if metrics == "" {
+		metrics = "_all"
+	}
+	indices := strings.Join(s.indices, ",")
+	if indices == "" {
+		indices = "_all"
+	}
+	path, err := uritemplates.Expand("/_cluster/state/{metrics}/{indices}", map[string]string{
+		"metrics": metrics,
+		"indices": indices,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.allowNoIndices != nil {
+		params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	if s.flatSettings != nil {
+		params.Set("flat_settings", fmt.Sprintf("%v", *s.flatSettings))
+	}
+	if s.ignoreUnavailable != nil {
+		params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
+	}
+	if s.local != nil {
+		params.Set("local", fmt.Sprintf("%v", *s.local))
+	}
+	if s.masterTimeout != "" {
+		params.Set("master_timeout", s.masterTimeout)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *ClusterStateService) Validate() error {
+	return nil
+}
+
+// Do executes the operation.
+func (s *ClusterStateService) Do() (*ClusterStateResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("GET", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(ClusterStateResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// ClusterStateResponse is the response of ClusterStateService.Do.
+type ClusterStateResponse struct {
+	ClusterName  string                               `json:"cluster_name"`
+	Version      int64                                `json:"version"`
+	StateUUID    string                               `json:"state_uuid"`
+	MasterNode   string                               `json:"master_node"`
+	Blocks       map[string]*clusterBlocks            `json:"blocks"`
+	Nodes        map[string]*discoveryNode            `json:"nodes"`
+	Metadata     *clusterStateMetadata                `json:"metadata"`
+	RoutingTable map[string]*clusterStateRoutingTable `json:"routing_table"`
+	RoutingNodes *clusterStateRoutingNode             `json:"routing_nodes"`
+	Customs      map[string]interface{}               `json:"customs"`
+}
+
+type clusterBlocks struct {
+	Global  map[string]*clusterBlock `json:"global"`  // id -> cluster block
+	Indices map[string]*clusterBlock `json:"indices"` // index name -> cluster block
+}
+
+type clusterBlock struct {
+	Description             string   `json:"description"`
+	Retryable               bool     `json:"retryable"`
+	DisableStatePersistence bool     `json:"disable_state_persistence"`
+	Levels                  []string `json:"levels"`
+}
+
+type clusterStateMetadata struct {
+	ClusterUUID  string                            `json:"cluster_uuid"`
+	Templates    map[string]*indexTemplateMetaData `json:"templates"` // template name -> index template metadata
+	Indices      map[string]*indexMetaData         `json:"indices"`   // index name _> meta data
+	RoutingTable struct {
+		Indices map[string]*indexRoutingTable `json:"indices"` // index name -> routing table
+	} `json:"routing_table"`
+	RoutingNodes struct {
+		Unassigned []*shardRouting `json:"unassigned"`
+		Nodes      []*shardRouting `json:"nodes"`
+	} `json:"routing_nodes"`
+	Customs map[string]interface{} `json:"customs"`
+}
+
+type discoveryNode struct {
+	Name             string                 `json:"name"`              // server name, e.g. "es1"
+	TransportAddress string                 `json:"transport_address"` // e.g. inet[/1.2.3.4:9300]
+	Attributes       map[string]interface{} `json:"attributes"`        // e.g. { "data": true, "master": true }
+}
+
+type clusterStateRoutingTable struct {
+	Indices map[string]interface{} `json:"indices"`
+}
+
+type clusterStateRoutingNode struct {
+	Unassigned []*shardRouting `json:"unassigned"`
+	// Node Id -> shardRouting
+	Nodes map[string][]*shardRouting `json:"nodes"`
+}
+
+type indexTemplateMetaData struct {
+	Template string                 `json:"template"` // e.g. "store-*"
+	Order    int                    `json:"order"`
+	Settings map[string]interface{} `json:"settings"` // index settings
+	Mappings map[string]interface{} `json:"mappings"` // type name -> mapping
+}
+
+type indexMetaData struct {
+	State    string                 `json:"state"`
+	Settings map[string]interface{} `json:"settings"`
+	Mappings map[string]interface{} `json:"mappings"`
+	Aliases  []string               `json:"aliases"` // e.g. [ "alias1", "alias2" ]
+}
+
+type indexRoutingTable struct {
+	Shards map[string]*shardRouting `json:"shards"`
+}
+
+type shardRouting struct {
+	State          string          `json:"state"`
+	Primary        bool            `json:"primary"`
+	Node           string          `json:"node"`
+	RelocatingNode string          `json:"relocating_node"`
+	Shard          int             `json:"shard"`
+	Index          string          `json:"index"`
+	Version        int64           `json:"state"`
+	RestoreSource  *RestoreSource  `json:"restore_source"`
+	AllocationId   *allocationId   `json:"allocation_id"`
+	UnassignedInfo *unassignedInfo `json:"unassigned_info"`
+}
+
+type RestoreSource struct {
+	Repository string `json:"repository"`
+	Snapshot   string `json:"snapshot"`
+	Version    string `json:"version"`
+	Index      string `json:"index"`
+}
+
+type allocationId struct {
+	Id           string `json:"id"`
+	RelocationId string `json:"relocation_id"`
+}
+
+type unassignedInfo struct {
+	Reason  string `json:"reason"`
+	At      string `json:"at"`
+	Details string `json:"details"`
+}

vendor/gopkg.in/olivere/elastic.v3/cluster_stats.go

@@ -0,0 +1,348 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// ClusterStatsService is documented at http://www.elasticsearch.org/guide/en/elasticsearch/reference/1.4/cluster-stats.html.
+type ClusterStatsService struct {
+	client       *Client
+	pretty       bool
+	nodeId       []string
+	flatSettings *bool
+	human        *bool
+}
+
+// NewClusterStatsService creates a new ClusterStatsService.
+func NewClusterStatsService(client *Client) *ClusterStatsService {
+	return &ClusterStatsService{
+		client: client,
+		nodeId: make([]string, 0),
+	}
+}
+
+// NodeId is documented as: A comma-separated list of node IDs or names to limit the returned information; use `_local` to return information from the node you're connecting to, leave empty to get information from all nodes.
+func (s *ClusterStatsService) NodeId(nodeId []string) *ClusterStatsService {
+	s.nodeId = nodeId
+	return s
+}
+
+// FlatSettings is documented as: Return settings in flat format (default: false).
+func (s *ClusterStatsService) FlatSettings(flatSettings bool) *ClusterStatsService {
+	s.flatSettings = &flatSettings
+	return s
+}
+
+// Human is documented as: Whether to return time and byte values in human-readable format..
+func (s *ClusterStatsService) Human(human bool) *ClusterStatsService {
+	s.human = &human
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *ClusterStatsService) Pretty(pretty bool) *ClusterStatsService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *ClusterStatsService) buildURL() (string, url.Values, error) {
+	// Build URL
+	var err error
+	var path string
+
+	if len(s.nodeId) > 0 {
+		path, err = uritemplates.Expand("/_cluster/stats/nodes/{node_id}", map[string]string{
+			"node_id": strings.Join(s.nodeId, ","),
+		})
+		if err != nil {
+			return "", url.Values{}, err
+		}
+	} else {
+		path, err = uritemplates.Expand("/_cluster/stats", map[string]string{})
+		if err != nil {
+			return "", url.Values{}, err
+		}
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.flatSettings != nil {
+		params.Set("flat_settings", fmt.Sprintf("%v", *s.flatSettings))
+	}
+	if s.human != nil {
+		params.Set("human", fmt.Sprintf("%v", *s.human))
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *ClusterStatsService) Validate() error {
+	return nil
+}
+
+// Do executes the operation.
+func (s *ClusterStatsService) Do() (*ClusterStatsResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("GET", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(ClusterStatsResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// ClusterStatsResponse is the response of ClusterStatsService.Do.
+type ClusterStatsResponse struct {
+	Timestamp   int64                `json:"timestamp"`
+	ClusterName string               `json:"cluster_name"`
+	ClusterUUID string               `json:"uuid"`
+	Status      string               `json:"status"`
+	Indices     *ClusterStatsIndices `json:"indices"`
+	Nodes       *ClusterStatsNodes   `json:"nodes"`
+}
+
+type ClusterStatsIndices struct {
+	Count       int                             `json:"count"`
+	Shards      *ClusterStatsIndicesShards      `json:"shards"`
+	Docs        *ClusterStatsIndicesDocs        `json:"docs"`
+	Store       *ClusterStatsIndicesStore       `json:"store"`
+	FieldData   *ClusterStatsIndicesFieldData   `json:"fielddata"`
+	FilterCache *ClusterStatsIndicesFilterCache `json:"filter_cache"`
+	IdCache     *ClusterStatsIndicesIdCache     `json:"id_cache"`
+	Completion  *ClusterStatsIndicesCompletion  `json:"completion"`
+	Segments    *ClusterStatsIndicesSegments    `json:"segments"`
+	Percolate   *ClusterStatsIndicesPercolate   `json:"percolate"`
+}
+
+type ClusterStatsIndicesShards struct {
+	Total       int                             `json:"total"`
+	Primaries   int                             `json:"primaries"`
+	Replication float64                         `json:"replication"`
+	Index       *ClusterStatsIndicesShardsIndex `json:"index"`
+}
+
+type ClusterStatsIndicesShardsIndex struct {
+	Shards      *ClusterStatsIndicesShardsIndexIntMinMax     `json:"shards"`
+	Primaries   *ClusterStatsIndicesShardsIndexIntMinMax     `json:"primaries"`
+	Replication *ClusterStatsIndicesShardsIndexFloat64MinMax `json:"replication"`
+}
+
+type ClusterStatsIndicesShardsIndexIntMinMax struct {
+	Min int     `json:"min"`
+	Max int     `json:"max"`
+	Avg float64 `json:"avg"`
+}
+
+type ClusterStatsIndicesShardsIndexFloat64MinMax struct {
+	Min float64 `json:"min"`
+	Max float64 `json:"max"`
+	Avg float64 `json:"avg"`
+}
+
+type ClusterStatsIndicesDocs struct {
+	Count   int `json:"count"`
+	Deleted int `json:"deleted"`
+}
+
+type ClusterStatsIndicesStore struct {
+	Size                 string `json:"size"` // e.g. "5.3gb"
+	SizeInBytes          int64  `json:"size_in_bytes"`
+	ThrottleTime         string `json:"throttle_time"` // e.g. "0s"
+	ThrottleTimeInMillis int64  `json:"throttle_time_in_millis"`
+}
+
+type ClusterStatsIndicesFieldData struct {
+	MemorySize        string `json:"memory_size"` // e.g. "61.3kb"
+	MemorySizeInBytes int64  `json:"memory_size_in_bytes"`
+	Evictions         int64  `json:"evictions"`
+	Fields            map[string]struct {
+		MemorySize        string `json:"memory_size"` // e.g. "61.3kb"
+		MemorySizeInBytes int64  `json:"memory_size_in_bytes"`
+	} `json:"fields"`
+}
+
+type ClusterStatsIndicesFilterCache struct {
+	MemorySize        string `json:"memory_size"` // e.g. "61.3kb"
+	MemorySizeInBytes int64  `json:"memory_size_in_bytes"`
+	Evictions         int64  `json:"evictions"`
+}
+
+type ClusterStatsIndicesIdCache struct {
+	MemorySize        string `json:"memory_size"` // e.g. "61.3kb"
+	MemorySizeInBytes int64  `json:"memory_size_in_bytes"`
+}
+
+type ClusterStatsIndicesCompletion struct {
+	Size        string `json:"size"` // e.g. "61.3kb"
+	SizeInBytes int64  `json:"size_in_bytes"`
+	Fields      map[string]struct {
+		Size        string `json:"size"` // e.g. "61.3kb"
+		SizeInBytes int64  `json:"size_in_bytes"`
+	} `json:"fields"`
+}
+
+type ClusterStatsIndicesSegments struct {
+	Count                       int64  `json:"count"`
+	Memory                      string `json:"memory"` // e.g. "61.3kb"
+	MemoryInBytes               int64  `json:"memory_in_bytes"`
+	IndexWriterMemory           string `json:"index_writer_memory"` // e.g. "61.3kb"
+	IndexWriterMemoryInBytes    int64  `json:"index_writer_memory_in_bytes"`
+	IndexWriterMaxMemory        string `json:"index_writer_max_memory"` // e.g. "61.3kb"
+	IndexWriterMaxMemoryInBytes int64  `json:"index_writer_max_memory_in_bytes"`
+	VersionMapMemory            string `json:"version_map_memory"` // e.g. "61.3kb"
+	VersionMapMemoryInBytes     int64  `json:"version_map_memory_in_bytes"`
+	FixedBitSet                 string `json:"fixed_bit_set"` // e.g. "61.3kb"
+	FixedBitSetInBytes          int64  `json:"fixed_bit_set_memory_in_bytes"`
+}
+
+type ClusterStatsIndicesPercolate struct {
+	Total int64 `json:"total"`
+	// TODO(oe) The JSON tag here is wrong as of ES 1.5.2 it seems
+	Time              string `json:"get_time"` // e.g. "1s"
+	TimeInBytes       int64  `json:"time_in_millis"`
+	Current           int64  `json:"current"`
+	MemorySize        string `json:"memory_size"` // e.g. "61.3kb"
+	MemorySizeInBytes int64  `json:"memory_sitze_in_bytes"`
+	Queries           int64  `json:"queries"`
+}
+
+// ---
+
+type ClusterStatsNodes struct {
+	Count    *ClusterStatsNodesCount        `json:"count"`
+	Versions []string                       `json:"versions"`
+	OS       *ClusterStatsNodesOsStats      `json:"os"`
+	Process  *ClusterStatsNodesProcessStats `json:"process"`
+	JVM      *ClusterStatsNodesJvmStats     `json:"jvm"`
+	FS       *ClusterStatsNodesFsStats      `json:"fs"`
+	Plugins  []*ClusterStatsNodesPlugin     `json:"plugins"`
+}
+
+type ClusterStatsNodesCount struct {
+	Total      int `json:"total"`
+	MasterOnly int `json:"master_only"`
+	DataOnly   int `json:"data_only"`
+	MasterData int `json:"master_data"`
+	Client     int `json:"client"`
+}
+
+type ClusterStatsNodesOsStats struct {
+	AvailableProcessors int                            `json:"available_processors"`
+	Mem                 *ClusterStatsNodesOsStatsMem   `json:"mem"`
+	CPU                 []*ClusterStatsNodesOsStatsCPU `json:"cpu"`
+}
+
+type ClusterStatsNodesOsStatsMem struct {
+	Total        string `json:"total"` // e.g. "16gb"
+	TotalInBytes int64  `json:"total_in_bytes"`
+}
+
+type ClusterStatsNodesOsStatsCPU struct {
+	Vendor           string `json:"vendor"`
+	Model            string `json:"model"`
+	MHz              int    `json:"mhz"`
+	TotalCores       int    `json:"total_cores"`
+	TotalSockets     int    `json:"total_sockets"`
+	CoresPerSocket   int    `json:"cores_per_socket"`
+	CacheSize        string `json:"cache_size"` // e.g. "256b"
+	CacheSizeInBytes int64  `json:"cache_size_in_bytes"`
+	Count            int    `json:"count"`
+}
+
+type ClusterStatsNodesProcessStats struct {
+	CPU                 *ClusterStatsNodesProcessStatsCPU                 `json:"cpu"`
+	OpenFileDescriptors *ClusterStatsNodesProcessStatsOpenFileDescriptors `json:"open_file_descriptors"`
+}
+
+type ClusterStatsNodesProcessStatsCPU struct {
+	Percent float64 `json:"percent"`
+}
+
+type ClusterStatsNodesProcessStatsOpenFileDescriptors struct {
+	Min int64 `json:"min"`
+	Max int64 `json:"max"`
+	Avg int64 `json:"avg"`
+}
+
+type ClusterStatsNodesJvmStats struct {
+	MaxUptime         string                              `json:"max_uptime"` // e.g. "5h"
+	MaxUptimeInMillis int64                               `json:"max_uptime_in_millis"`
+	Versions          []*ClusterStatsNodesJvmStatsVersion `json:"versions"`
+	Mem               *ClusterStatsNodesJvmStatsMem       `json:"mem"`
+	Threads           int64                               `json:"threads"`
+}
+
+type ClusterStatsNodesJvmStatsVersion struct {
+	Version   string `json:"version"`    // e.g. "1.8.0_45"
+	VMName    string `json:"vm_name"`    // e.g. "Java HotSpot(TM) 64-Bit Server VM"
+	VMVersion string `json:"vm_version"` // e.g. "25.45-b02"
+	VMVendor  string `json:"vm_vendor"`  // e.g. "Oracle Corporation"
+	Count     int    `json:"count"`
+}
+
+type ClusterStatsNodesJvmStatsMem struct {
+	HeapUsed        string `json:"heap_used"`
+	HeapUsedInBytes int64  `json:"heap_used_in_bytes"`
+	HeapMax         string `json:"heap_max"`
+	HeapMaxInBytes  int64  `json:"heap_max_in_bytes"`
+}
+
+type ClusterStatsNodesFsStats struct {
+	Path                 string `json:"path"`
+	Mount                string `json:"mount"`
+	Dev                  string `json:"dev"`
+	Total                string `json:"total"` // e.g. "930.7gb"`
+	TotalInBytes         int64  `json:"total_in_bytes"`
+	Free                 string `json:"free"` // e.g. "930.7gb"`
+	FreeInBytes          int64  `json:"free_in_bytes"`
+	Available            string `json:"available"` // e.g. "930.7gb"`
+	AvailableInBytes     int64  `json:"available_in_bytes"`
+	DiskReads            int64  `json:"disk_reads"`
+	DiskWrites           int64  `json:"disk_writes"`
+	DiskIOOp             int64  `json:"disk_io_op"`
+	DiskReadSize         string `json:"disk_read_size"` // e.g. "0b"`
+	DiskReadSizeInBytes  int64  `json:"disk_read_size_in_bytes"`
+	DiskWriteSize        string `json:"disk_write_size"` // e.g. "0b"`
+	DiskWriteSizeInBytes int64  `json:"disk_write_size_in_bytes"`
+	DiskIOSize           string `json:"disk_io_size"` // e.g. "0b"`
+	DiskIOSizeInBytes    int64  `json:"disk_io_size_in_bytes"`
+	DiskQueue            string `json:"disk_queue"`
+	DiskServiceTime      string `json:"disk_service_time"`
+}
+
+type ClusterStatsNodesPlugin struct {
+	Name        string `json:"name"`
+	Version     string `json:"version"`
+	Description string `json:"description"`
+	URL         string `json:"url"`
+	JVM         bool   `json:"jvm"`
+	Site        bool   `json:"site"`
+}

vendor/gopkg.in/olivere/elastic.v3/connection.go

@@ -0,0 +1,90 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+// conn represents a single connection to a node in a cluster.
+type conn struct {
+	sync.RWMutex
+	nodeID    string // node ID
+	url       string
+	failures  int
+	dead      bool
+	deadSince *time.Time
+}
+
+// newConn creates a new connection to the given URL.
+func newConn(nodeID, url string) *conn {
+	c := &conn{
+		nodeID: nodeID,
+		url:    url,
+	}
+	return c
+}
+
+// String returns a representation of the connection status.
+func (c *conn) String() string {
+	c.RLock()
+	defer c.RUnlock()
+	return fmt.Sprintf("%s [dead=%v,failures=%d,deadSince=%v]", c.url, c.dead, c.failures, c.deadSince)
+}
+
+// NodeID returns the ID of the node of this connection.
+func (c *conn) NodeID() string {
+	c.RLock()
+	defer c.RUnlock()
+	return c.nodeID
+}
+
+// URL returns the URL of this connection.
+func (c *conn) URL() string {
+	c.RLock()
+	defer c.RUnlock()
+	return c.url
+}
+
+// IsDead returns true if this connection is marked as dead, i.e. a previous
+// request to the URL has been unsuccessful.
+func (c *conn) IsDead() bool {
+	c.RLock()
+	defer c.RUnlock()
+	return c.dead
+}
+
+// MarkAsDead marks this connection as dead, increments the failures
+// counter and stores the current time in dead since.
+func (c *conn) MarkAsDead() {
+	c.Lock()
+	c.dead = true
+	if c.deadSince == nil {
+		utcNow := time.Now().UTC()
+		c.deadSince = &utcNow
+	}
+	c.failures += 1
+	c.Unlock()
+}
+
+// MarkAsAlive marks this connection as eligible to be returned from the
+// pool of connections by the selector.
+func (c *conn) MarkAsAlive() {
+	c.Lock()
+	c.dead = false
+	c.Unlock()
+}
+
+// MarkAsHealthy marks this connection as healthy, i.e. a request has been
+// successfully performed with it.
+func (c *conn) MarkAsHealthy() {
+	c.Lock()
+	c.dead = false
+	c.deadSince = nil
+	c.failures = 0
+	c.Unlock()
+}

vendor/gopkg.in/olivere/elastic.v3/count.go

@@ -0,0 +1,309 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// CountService is a convenient service for determining the
+// number of documents in an index. Use SearchService with
+// a SearchType of count for counting with queries etc.
+type CountService struct {
+	client                 *Client
+	pretty                 bool
+	index                  []string
+	typ                    []string
+	allowNoIndices         *bool
+	analyzeWildcard        *bool
+	analyzer               string
+	defaultOperator        string
+	df                     string
+	expandWildcards        string
+	ignoreUnavailable      *bool
+	lenient                *bool
+	lowercaseExpandedTerms *bool
+	minScore               interface{}
+	preference             string
+	q                      string
+	query                  Query
+	routing                string
+	bodyJson               interface{}
+	bodyString             string
+}
+
+// NewCountService creates a new CountService.
+func NewCountService(client *Client) *CountService {
+	return &CountService{
+		client: client,
+	}
+}
+
+// Index sets the names of the indices to restrict the results.
+func (s *CountService) Index(index ...string) *CountService {
+	if s.index == nil {
+		s.index = make([]string, 0)
+	}
+	s.index = append(s.index, index...)
+	return s
+}
+
+// Type sets the types to use to restrict the results.
+func (s *CountService) Type(typ ...string) *CountService {
+	if s.typ == nil {
+		s.typ = make([]string, 0)
+	}
+	s.typ = append(s.typ, typ...)
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices
+// expression resolves into no concrete indices. (This includes "_all" string
+// or when no indices have been specified).
+func (s *CountService) AllowNoIndices(allowNoIndices bool) *CountService {
+	s.allowNoIndices = &allowNoIndices
+	return s
+}
+
+// AnalyzeWildcard specifies whether wildcard and prefix queries should be
+// analyzed (default: false).
+func (s *CountService) AnalyzeWildcard(analyzeWildcard bool) *CountService {
+	s.analyzeWildcard = &analyzeWildcard
+	return s
+}
+
+// Analyzer specifies the analyzer to use for the query string.
+func (s *CountService) Analyzer(analyzer string) *CountService {
+	s.analyzer = analyzer
+	return s
+}
+
+// DefaultOperator specifies the default operator for query string query (AND or OR).
+func (s *CountService) DefaultOperator(defaultOperator string) *CountService {
+	s.defaultOperator = defaultOperator
+	return s
+}
+
+// Df specifies the field to use as default where no field prefix is given
+// in the query string.
+func (s *CountService) Df(df string) *CountService {
+	s.df = df
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both.
+func (s *CountService) ExpandWildcards(expandWildcards string) *CountService {
+	s.expandWildcards = expandWildcards
+	return s
+}
+
+// IgnoreUnavailable indicates whether specified concrete indices should be
+// ignored when unavailable (missing or closed).
+func (s *CountService) IgnoreUnavailable(ignoreUnavailable bool) *CountService {
+	s.ignoreUnavailable = &ignoreUnavailable
+	return s
+}
+
+// Lenient specifies whether format-based query failures (such as
+// providing text to a numeric field) should be ignored.
+func (s *CountService) Lenient(lenient bool) *CountService {
+	s.lenient = &lenient
+	return s
+}
+
+// LowercaseExpandedTerms specifies whether query terms should be lowercased.
+func (s *CountService) LowercaseExpandedTerms(lowercaseExpandedTerms bool) *CountService {
+	s.lowercaseExpandedTerms = &lowercaseExpandedTerms
+	return s
+}
+
+// MinScore indicates to include only documents with a specific `_score`
+// value in the result.
+func (s *CountService) MinScore(minScore interface{}) *CountService {
+	s.minScore = minScore
+	return s
+}
+
+// Preference specifies the node or shard the operation should be
+// performed on (default: random).
+func (s *CountService) Preference(preference string) *CountService {
+	s.preference = preference
+	return s
+}
+
+// Q in the Lucene query string syntax. You can also use Query to pass
+// a Query struct.
+func (s *CountService) Q(q string) *CountService {
+	s.q = q
+	return s
+}
+
+// Query specifies the query to pass. You can also pass a query string with Q.
+func (s *CountService) Query(query Query) *CountService {
+	s.query = query
+	return s
+}
+
+// Routing specifies the routing value.
+func (s *CountService) Routing(routing string) *CountService {
+	s.routing = routing
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *CountService) Pretty(pretty bool) *CountService {
+	s.pretty = pretty
+	return s
+}
+
+// BodyJson specifies the query to restrict the results specified with the
+// Query DSL (optional). The interface{} will be serialized to a JSON document,
+// so use a map[string]interface{}.
+func (s *CountService) BodyJson(body interface{}) *CountService {
+	s.bodyJson = body
+	return s
+}
+
+// Body specifies a query to restrict the results specified with
+// the Query DSL (optional).
+func (s *CountService) BodyString(body string) *CountService {
+	s.bodyString = body
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *CountService) buildURL() (string, url.Values, error) {
+	var err error
+	var path string
+
+	if len(s.index) > 0 && len(s.typ) > 0 {
+		path, err = uritemplates.Expand("/{index}/{type}/_count", map[string]string{
+			"index": strings.Join(s.index, ","),
+			"type":  strings.Join(s.typ, ","),
+		})
+	} else if len(s.index) > 0 {
+		path, err = uritemplates.Expand("/{index}/_count", map[string]string{
+			"index": strings.Join(s.index, ","),
+		})
+	} else if len(s.typ) > 0 {
+		path, err = uritemplates.Expand("/_all/{type}/_count", map[string]string{
+			"type": strings.Join(s.typ, ","),
+		})
+	} else {
+		path = "/_all/_count"
+	}
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.allowNoIndices != nil {
+		params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
+	}
+	if s.analyzeWildcard != nil {
+		params.Set("analyze_wildcard", fmt.Sprintf("%v", *s.analyzeWildcard))
+	}
+	if s.analyzer != "" {
+		params.Set("analyzer", s.analyzer)
+	}
+	if s.defaultOperator != "" {
+		params.Set("default_operator", s.defaultOperator)
+	}
+	if s.df != "" {
+		params.Set("df", s.df)
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	if s.ignoreUnavailable != nil {
+		params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
+	}
+	if s.lenient != nil {
+		params.Set("lenient", fmt.Sprintf("%v", *s.lenient))
+	}
+	if s.lowercaseExpandedTerms != nil {
+		params.Set("lowercase_expanded_terms", fmt.Sprintf("%v", *s.lowercaseExpandedTerms))
+	}
+	if s.minScore != nil {
+		params.Set("min_score", fmt.Sprintf("%v", s.minScore))
+	}
+	if s.preference != "" {
+		params.Set("preference", s.preference)
+	}
+	if s.q != "" {
+		params.Set("q", s.q)
+	}
+	if s.routing != "" {
+		params.Set("routing", s.routing)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *CountService) Validate() error {
+	return nil
+}
+
+// Do executes the operation.
+func (s *CountService) Do() (int64, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return 0, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return 0, err
+	}
+
+	// Setup HTTP request body
+	var body interface{}
+	if s.query != nil {
+		src, err := s.query.Source()
+		if err != nil {
+			return 0, err
+		}
+		query := make(map[string]interface{})
+		query["query"] = src
+		body = query
+	} else if s.bodyJson != nil {
+		body = s.bodyJson
+	} else if s.bodyString != "" {
+		body = s.bodyString
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("POST", path, params, body)
+	if err != nil {
+		return 0, err
+	}
+
+	// Return result
+	ret := new(CountResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return 0, err
+	}
+	if ret != nil {
+		return ret.Count, nil
+	}
+
+	return int64(0), nil
+}
+
+// CountResponse is the response of using the Count API.
+type CountResponse struct {
+	Count  int64      `json:"count"`
+	Shards shardsInfo `json:"_shards,omitempty"`
+}

vendor/gopkg.in/olivere/elastic.v3/decoder.go

@@ -0,0 +1,26 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"encoding/json"
+)
+
+// Decoder is used to decode responses from Elasticsearch.
+// Users of elastic can implement their own marshaler for advanced purposes
+// and set them per Client (see SetDecoder). If none is specified,
+// DefaultDecoder is used.
+type Decoder interface {
+	Decode(data []byte, v interface{}) error
+}
+
+// DefaultDecoder uses json.Unmarshal from the Go standard library
+// to decode JSON data.
+type DefaultDecoder struct{}
+
+// Decode decodes with json.Unmarshal from the Go standard library.
+func (u *DefaultDecoder) Decode(data []byte, v interface{}) error {
+	return json.Unmarshal(data, v)
+}

vendor/gopkg.in/olivere/elastic.v3/delete.go

@@ -0,0 +1,213 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// DeleteService allows to delete a typed JSON document from a specified
+// index based on its id.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-delete.html
+// for details.
+type DeleteService struct {
+	client      *Client
+	pretty      bool
+	id          string
+	index       string
+	typ         string
+	routing     string
+	timeout     string
+	version     interface{}
+	versionType string
+	consistency string
+	parent      string
+	refresh     *bool
+	replication string
+}
+
+// NewDeleteService creates a new DeleteService.
+func NewDeleteService(client *Client) *DeleteService {
+	return &DeleteService{
+		client: client,
+	}
+}
+
+// Type is the type of the document.
+func (s *DeleteService) Type(typ string) *DeleteService {
+	s.typ = typ
+	return s
+}
+
+// Id is the document ID.
+func (s *DeleteService) Id(id string) *DeleteService {
+	s.id = id
+	return s
+}
+
+// Index is the name of the index.
+func (s *DeleteService) Index(index string) *DeleteService {
+	s.index = index
+	return s
+}
+
+// Replication specifies a replication type.
+func (s *DeleteService) Replication(replication string) *DeleteService {
+	s.replication = replication
+	return s
+}
+
+// Routing is a specific routing value.
+func (s *DeleteService) Routing(routing string) *DeleteService {
+	s.routing = routing
+	return s
+}
+
+// Timeout is an explicit operation timeout.
+func (s *DeleteService) Timeout(timeout string) *DeleteService {
+	s.timeout = timeout
+	return s
+}
+
+// Version is an explicit version number for concurrency control.
+func (s *DeleteService) Version(version interface{}) *DeleteService {
+	s.version = version
+	return s
+}
+
+// VersionType is a specific version type.
+func (s *DeleteService) VersionType(versionType string) *DeleteService {
+	s.versionType = versionType
+	return s
+}
+
+// Consistency defines a specific write consistency setting for the operation.
+func (s *DeleteService) Consistency(consistency string) *DeleteService {
+	s.consistency = consistency
+	return s
+}
+
+// Parent is the ID of parent document.
+func (s *DeleteService) Parent(parent string) *DeleteService {
+	s.parent = parent
+	return s
+}
+
+// Refresh the index after performing the operation.
+func (s *DeleteService) Refresh(refresh bool) *DeleteService {
+	s.refresh = &refresh
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *DeleteService) Pretty(pretty bool) *DeleteService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *DeleteService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}/{type}/{id}", map[string]string{
+		"index": s.index,
+		"type":  s.typ,
+		"id":    s.id,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.refresh != nil {
+		params.Set("refresh", fmt.Sprintf("%v", *s.refresh))
+	}
+	if s.replication != "" {
+		params.Set("replication", s.replication)
+	}
+	if s.routing != "" {
+		params.Set("routing", s.routing)
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+	if s.version != nil {
+		params.Set("version", fmt.Sprintf("%v", s.version))
+	}
+	if s.versionType != "" {
+		params.Set("version_type", s.versionType)
+	}
+	if s.consistency != "" {
+		params.Set("consistency", s.consistency)
+	}
+	if s.parent != "" {
+		params.Set("parent", s.parent)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *DeleteService) Validate() error {
+	var invalid []string
+	if s.typ == "" {
+		invalid = append(invalid, "Type")
+	}
+	if s.id == "" {
+		invalid = append(invalid, "Id")
+	}
+	if s.index == "" {
+		invalid = append(invalid, "Index")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *DeleteService) Do() (*DeleteResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("DELETE", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(DeleteResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// -- Result of a delete request.
+
+// DeleteResponse is the outcome of running DeleteService.Do.
+type DeleteResponse struct {
+	// TODO _shards { total, failed, successful }
+	Found   bool   `json:"found"`
+	Index   string `json:"_index"`
+	Type    string `json:"_type"`
+	Id      string `json:"_id"`
+	Version int64  `json:"_version"`
+}

vendor/gopkg.in/olivere/elastic.v3/delete_by_query.go

@@ -0,0 +1,301 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// DeleteByQueryService deletes documents that match a query.
+// See http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/docs-delete-by-query.html.
+type DeleteByQueryService struct {
+	client            *Client
+	indices           []string
+	types             []string
+	analyzer          string
+	consistency       string
+	defaultOper       string
+	df                string
+	ignoreUnavailable *bool
+	allowNoIndices    *bool
+	expandWildcards   string
+	replication       string
+	routing           string
+	timeout           string
+	pretty            bool
+	q                 string
+	query             Query
+}
+
+// NewDeleteByQueryService creates a new DeleteByQueryService.
+// You typically use the client's DeleteByQuery to get a reference to
+// the service.
+func NewDeleteByQueryService(client *Client) *DeleteByQueryService {
+	builder := &DeleteByQueryService{
+		client: client,
+	}
+	return builder
+}
+
+// Index sets the indices on which to perform the delete operation.
+func (s *DeleteByQueryService) Index(indices ...string) *DeleteByQueryService {
+	if s.indices == nil {
+		s.indices = make([]string, 0)
+	}
+	s.indices = append(s.indices, indices...)
+	return s
+}
+
+// Type limits the delete operation to the given types.
+func (s *DeleteByQueryService) Type(types ...string) *DeleteByQueryService {
+	if s.types == nil {
+		s.types = make([]string, 0)
+	}
+	s.types = append(s.types, types...)
+	return s
+}
+
+// Analyzer to use for the query string.
+func (s *DeleteByQueryService) Analyzer(analyzer string) *DeleteByQueryService {
+	s.analyzer = analyzer
+	return s
+}
+
+// Consistency represents the specific write consistency setting for the operation.
+// It can be one, quorum, or all.
+func (s *DeleteByQueryService) Consistency(consistency string) *DeleteByQueryService {
+	s.consistency = consistency
+	return s
+}
+
+// DefaultOperator for query string query (AND or OR).
+func (s *DeleteByQueryService) DefaultOperator(defaultOperator string) *DeleteByQueryService {
+	s.defaultOper = defaultOperator
+	return s
+}
+
+// DF is the field to use as default where no field prefix is given in the query string.
+func (s *DeleteByQueryService) DF(defaultField string) *DeleteByQueryService {
+	s.df = defaultField
+	return s
+}
+
+// DefaultField is the field to use as default where no field prefix is given in the query string.
+// It is an alias to the DF func.
+func (s *DeleteByQueryService) DefaultField(defaultField string) *DeleteByQueryService {
+	s.df = defaultField
+	return s
+}
+
+// IgnoreUnavailable indicates whether specified concrete indices should be
+// ignored when unavailable (missing or closed).
+func (s *DeleteByQueryService) IgnoreUnavailable(ignore bool) *DeleteByQueryService {
+	s.ignoreUnavailable = &ignore
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices
+// expression resolves into no concrete indices (including the _all string
+// or when no indices have been specified).
+func (s *DeleteByQueryService) AllowNoIndices(allow bool) *DeleteByQueryService {
+	s.allowNoIndices = &allow
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both. It can be "open" or "closed".
+func (s *DeleteByQueryService) ExpandWildcards(expand string) *DeleteByQueryService {
+	s.expandWildcards = expand
+	return s
+}
+
+// Replication sets a specific replication type (sync or async).
+func (s *DeleteByQueryService) Replication(replication string) *DeleteByQueryService {
+	s.replication = replication
+	return s
+}
+
+// Q specifies the query in Lucene query string syntax. You can also use
+// Query to programmatically specify the query.
+func (s *DeleteByQueryService) Q(query string) *DeleteByQueryService {
+	s.q = query
+	return s
+}
+
+// QueryString is an alias to Q. Notice that you can also use Query to
+// programmatically set the query.
+func (s *DeleteByQueryService) QueryString(query string) *DeleteByQueryService {
+	s.q = query
+	return s
+}
+
+// Routing sets a specific routing value.
+func (s *DeleteByQueryService) Routing(routing string) *DeleteByQueryService {
+	s.routing = routing
+	return s
+}
+
+// Timeout sets an explicit operation timeout, e.g. "1s" or "10000ms".
+func (s *DeleteByQueryService) Timeout(timeout string) *DeleteByQueryService {
+	s.timeout = timeout
+	return s
+}
+
+// Pretty indents the JSON output from Elasticsearch.
+func (s *DeleteByQueryService) Pretty(pretty bool) *DeleteByQueryService {
+	s.pretty = pretty
+	return s
+}
+
+// Query sets the query programmatically.
+func (s *DeleteByQueryService) Query(query Query) *DeleteByQueryService {
+	s.query = query
+	return s
+}
+
+// Do executes the delete-by-query operation.
+func (s *DeleteByQueryService) Do() (*DeleteByQueryResult, error) {
+	var err error
+
+	// Build url
+	path := "/"
+
+	// Indices part
+	indexPart := make([]string, 0)
+	for _, index := range s.indices {
+		index, err = uritemplates.Expand("{index}", map[string]string{
+			"index": index,
+		})
+		if err != nil {
+			return nil, err
+		}
+		indexPart = append(indexPart, index)
+	}
+	if len(indexPart) > 0 {
+		path += strings.Join(indexPart, ",")
+	}
+
+	// Types part
+	typesPart := make([]string, 0)
+	for _, typ := range s.types {
+		typ, err = uritemplates.Expand("{type}", map[string]string{
+			"type": typ,
+		})
+		if err != nil {
+			return nil, err
+		}
+		typesPart = append(typesPart, typ)
+	}
+	if len(typesPart) > 0 {
+		path += "/" + strings.Join(typesPart, ",")
+	}
+
+	// Search
+	path += "/_query"
+
+	// Parameters
+	params := make(url.Values)
+	if s.analyzer != "" {
+		params.Set("analyzer", s.analyzer)
+	}
+	if s.consistency != "" {
+		params.Set("consistency", s.consistency)
+	}
+	if s.defaultOper != "" {
+		params.Set("default_operator", s.defaultOper)
+	}
+	if s.df != "" {
+		params.Set("df", s.df)
+	}
+	if s.ignoreUnavailable != nil {
+		params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
+	}
+	if s.allowNoIndices != nil {
+		params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	if s.replication != "" {
+		params.Set("replication", s.replication)
+	}
+	if s.routing != "" {
+		params.Set("routing", s.routing)
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+	if s.pretty {
+		params.Set("pretty", fmt.Sprintf("%v", s.pretty))
+	}
+	if s.q != "" {
+		params.Set("q", s.q)
+	}
+
+	// Set body if there is a query set
+	var body interface{}
+	if s.query != nil {
+		src, err := s.query.Source()
+		if err != nil {
+			return nil, err
+		}
+		query := make(map[string]interface{})
+		query["query"] = src
+		body = query
+	}
+
+	// Get response
+	res, err := s.client.PerformRequest("DELETE", path, params, body)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return result
+	ret := new(DeleteByQueryResult)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// DeleteByQueryResult is the outcome of executing Do with DeleteByQueryService.
+type DeleteByQueryResult struct {
+	Took     int64                               `json:"took"`
+	TimedOut bool                                `json:"timed_out"`
+	Indices  map[string]IndexDeleteByQueryResult `json:"_indices"`
+	Failures []shardOperationFailure             `json:"failures"`
+}
+
+// IndexNames returns the names of the indices the DeleteByQuery touched.
+func (res DeleteByQueryResult) IndexNames() []string {
+	var indices []string
+	for index, _ := range res.Indices {
+		indices = append(indices, index)
+	}
+	return indices
+}
+
+// All returns the index delete-by-query result of all indices.
+func (res DeleteByQueryResult) All() IndexDeleteByQueryResult {
+	all, _ := res.Indices["_all"]
+	return all
+}
+
+// IndexDeleteByQueryResult is the result of a delete-by-query for a specific
+// index.
+type IndexDeleteByQueryResult struct {
+	// Found documents, matching the query.
+	Found int `json:"found"`
+	// Deleted documents, successfully, from the given index.
+	Deleted int `json:"deleted"`
+	// Missing documents when trying to delete them.
+	Missing int `json:"missing"`
+	// Failed documents to be deleted for the given index.
+	Failed int `json:"failed"`
+}

vendor/gopkg.in/olivere/elastic.v3/delete_template.go

@@ -0,0 +1,117 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// DeleteTemplateService deletes a search template. More information can
+// be found at http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/search-template.html.
+type DeleteTemplateService struct {
+	client      *Client
+	pretty      bool
+	id          string
+	version     *int
+	versionType string
+}
+
+// NewDeleteTemplateService creates a new DeleteTemplateService.
+func NewDeleteTemplateService(client *Client) *DeleteTemplateService {
+	return &DeleteTemplateService{
+		client: client,
+	}
+}
+
+// Id is the template ID.
+func (s *DeleteTemplateService) Id(id string) *DeleteTemplateService {
+	s.id = id
+	return s
+}
+
+// Version an explicit version number for concurrency control.
+func (s *DeleteTemplateService) Version(version int) *DeleteTemplateService {
+	s.version = &version
+	return s
+}
+
+// VersionType specifies a version type.
+func (s *DeleteTemplateService) VersionType(versionType string) *DeleteTemplateService {
+	s.versionType = versionType
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *DeleteTemplateService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/_search/template/{id}", map[string]string{
+		"id": s.id,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.version != nil {
+		params.Set("version", fmt.Sprintf("%d", *s.version))
+	}
+	if s.versionType != "" {
+		params.Set("version_type", s.versionType)
+	}
+
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *DeleteTemplateService) Validate() error {
+	var invalid []string
+	if s.id == "" {
+		invalid = append(invalid, "Id")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *DeleteTemplateService) Do() (*DeleteTemplateResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("DELETE", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(DeleteTemplateResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// DeleteTemplateResponse is the response of DeleteTemplateService.Do.
+type DeleteTemplateResponse struct {
+	Found   bool   `json:"found"`
+	Index   string `json:"_index"`
+	Type    string `json:"_type"`
+	Id      string `json:"_id"`
+	Version int    `json:"_version"`
+}

vendor/gopkg.in/olivere/elastic.v3/doc.go

@@ -0,0 +1,51 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+/*
+Package elastic provides an interface to the Elasticsearch server
+(http://www.elasticsearch.org/).
+
+The first thing you do is to create a Client. If you have Elasticsearch
+installed and running with its default settings
+(i.e. available at http://127.0.0.1:9200), all you need to do is:
+
+	client, err := elastic.NewClient()
+	if err != nil {
+		// Handle error
+	}
+
+If your Elasticsearch server is running on a different IP and/or port,
+just provide a URL to NewClient:
+
+  // Create a client and connect to http://192.168.2.10:9201
+  client, err := elastic.NewClient(elastic.SetURL("http://192.168.2.10:9201"))
+  if err != nil {
+    // Handle error
+  }
+
+You can pass many more configuration parameters to NewClient. Review the
+documentation of NewClient for more information.
+
+If no Elasticsearch server is available, services will fail when creating
+a new request and will return ErrNoClient.
+
+A Client provides services. The services usually come with a variety of
+methods to prepare the query and a Do function to execute it against the
+Elasticsearch REST interface and return a response. Here is an example
+of the IndexExists service that checks if a given index already exists.
+
+	exists, err := client.IndexExists("twitter").Do()
+	if err != nil {
+		// Handle error
+	}
+	if !exists {
+		// Index does not exist yet.
+	}
+
+Look up the documentation for Client to get an idea of the services provided
+and what kinds of responses you get when executing the Do function of a service.
+Also see the wiki on Github for more details.
+
+*/
+package elastic

vendor/gopkg.in/olivere/elastic.v3/errors.go

@@ -0,0 +1,141 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+// checkResponse will return an error if the request/response indicates
+// an error returned from Elasticsearch.
+//
+// HTTP status codes between in the range [200..299] are considered successful.
+// All other errors are considered errors except they are specified in
+// ignoreErrors. This is necessary because for some services, HTTP status 404
+// is a valid response from Elasticsearch (e.g. the Exists service).
+//
+// The func tries to parse error details as returned from Elasticsearch
+// and encapsulates them in type elastic.Error.
+func checkResponse(req *http.Request, res *http.Response, ignoreErrors ...int) error {
+	// 200-299 are valid status codes
+	if res.StatusCode >= 200 && res.StatusCode <= 299 {
+		return nil
+	}
+	// Ignore certain errors?
+	for _, code := range ignoreErrors {
+		if code == res.StatusCode {
+			return nil
+		}
+	}
+	return createResponseError(res)
+}
+
+// createResponseError creates an Error structure from the HTTP response,
+// its status code and the error information sent by Elasticsearch.
+func createResponseError(res *http.Response) error {
+	if res.Body == nil {
+		return &Error{Status: res.StatusCode}
+	}
+	data, err := ioutil.ReadAll(res.Body)
+	if err != nil {
+		return &Error{Status: res.StatusCode}
+	}
+	errReply := new(Error)
+	err = json.Unmarshal(data, errReply)
+	if err != nil {
+		return &Error{Status: res.StatusCode}
+	}
+	if errReply != nil {
+		if errReply.Status == 0 {
+			errReply.Status = res.StatusCode
+		}
+		return errReply
+	}
+	return &Error{Status: res.StatusCode}
+}
+
+// Error encapsulates error details as returned from Elasticsearch.
+type Error struct {
+	Status  int           `json:"status"`
+	Details *ErrorDetails `json:"error,omitempty"`
+}
+
+// ErrorDetails encapsulate error details from Elasticsearch.
+// It is used in e.g. elastic.Error and elastic.BulkResponseItem.
+type ErrorDetails struct {
+	Type         string                   `json:"type"`
+	Reason       string                   `json:"reason"`
+	ResourceType string                   `json:"resource.type,omitempty"`
+	ResourceId   string                   `json:"resource.id,omitempty"`
+	Index        string                   `json:"index,omitempty"`
+	Phase        string                   `json:"phase,omitempty"`
+	Grouped      bool                     `json:"grouped,omitempty"`
+	CausedBy     map[string]interface{}   `json:"caused_by,omitempty"`
+	RootCause    []*ErrorDetails          `json:"root_cause,omitempty"`
+	FailedShards []map[string]interface{} `json:"failed_shards,omitempty"`
+}
+
+// Error returns a string representation of the error.
+func (e *Error) Error() string {
+	if e.Details != nil && e.Details.Reason != "" {
+		return fmt.Sprintf("elastic: Error %d (%s): %s [type=%s]", e.Status, http.StatusText(e.Status), e.Details.Reason, e.Details.Type)
+	} else {
+		return fmt.Sprintf("elastic: Error %d (%s)", e.Status, http.StatusText(e.Status))
+	}
+}
+
+// IsNotFound returns true if the given error indicates that Elasticsearch
+// returned HTTP status 404. The err parameter can be of type *elastic.Error,
+// elastic.Error, *http.Response or int (indicating the HTTP status code).
+func IsNotFound(err interface{}) bool {
+	switch e := err.(type) {
+	case *http.Response:
+		return e.StatusCode == http.StatusNotFound
+	case *Error:
+		return e.Status == http.StatusNotFound
+	case Error:
+		return e.Status == http.StatusNotFound
+	case int:
+		return e == http.StatusNotFound
+	}
+	return false
+}
+
+// IsTimeout returns true if the given error indicates that Elasticsearch
+// returned HTTP status 408. The err parameter can be of type *elastic.Error,
+// elastic.Error, *http.Response or int (indicating the HTTP status code).
+func IsTimeout(err interface{}) bool {
+	switch e := err.(type) {
+	case *http.Response:
+		return e.StatusCode == http.StatusRequestTimeout
+	case *Error:
+		return e.Status == http.StatusRequestTimeout
+	case Error:
+		return e.Status == http.StatusRequestTimeout
+	case int:
+		return e == http.StatusRequestTimeout
+	}
+	return false
+}
+
+// -- General errors --
+
+// shardsInfo represents information from a shard.
+type shardsInfo struct {
+	Total      int `json:"total"`
+	Successful int `json:"successful"`
+	Failed     int `json:"failed"`
+}
+
+// shardOperationFailure represents a shard failure.
+type shardOperationFailure struct {
+	Shard  int    `json:"shard"`
+	Index  string `json:"index"`
+	Status string `json:"status"`
+	// "reason"
+}

vendor/gopkg.in/olivere/elastic.v3/exists.go

@@ -0,0 +1,175 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// ExistsService checks for the existence of a document using HEAD.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html
+// for details.
+type ExistsService struct {
+	client     *Client
+	pretty     bool
+	id         string
+	index      string
+	typ        string
+	preference string
+	realtime   *bool
+	refresh    *bool
+	routing    string
+	parent     string
+}
+
+// NewExistsService creates a new ExistsService.
+func NewExistsService(client *Client) *ExistsService {
+	return &ExistsService{
+		client: client,
+	}
+}
+
+// Id is the document ID.
+func (s *ExistsService) Id(id string) *ExistsService {
+	s.id = id
+	return s
+}
+
+// Index is the name of the index.
+func (s *ExistsService) Index(index string) *ExistsService {
+	s.index = index
+	return s
+}
+
+// Type is the type of the document (use `_all` to fetch the first document
+// matching the ID across all types).
+func (s *ExistsService) Type(typ string) *ExistsService {
+	s.typ = typ
+	return s
+}
+
+// Preference specifies the node or shard the operation should be performed on (default: random).
+func (s *ExistsService) Preference(preference string) *ExistsService {
+	s.preference = preference
+	return s
+}
+
+// Realtime specifies whether to perform the operation in realtime or search mode.
+func (s *ExistsService) Realtime(realtime bool) *ExistsService {
+	s.realtime = &realtime
+	return s
+}
+
+// Refresh the shard containing the document before performing the operation.
+func (s *ExistsService) Refresh(refresh bool) *ExistsService {
+	s.refresh = &refresh
+	return s
+}
+
+// Routing is a specific routing value.
+func (s *ExistsService) Routing(routing string) *ExistsService {
+	s.routing = routing
+	return s
+}
+
+// Parent is the ID of the parent document.
+func (s *ExistsService) Parent(parent string) *ExistsService {
+	s.parent = parent
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *ExistsService) Pretty(pretty bool) *ExistsService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *ExistsService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}/{type}/{id}", map[string]string{
+		"id":    s.id,
+		"index": s.index,
+		"type":  s.typ,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.realtime != nil {
+		params.Set("realtime", fmt.Sprintf("%v", *s.realtime))
+	}
+	if s.refresh != nil {
+		params.Set("refresh", fmt.Sprintf("%v", *s.refresh))
+	}
+	if s.routing != "" {
+		params.Set("routing", s.routing)
+	}
+	if s.parent != "" {
+		params.Set("parent", s.parent)
+	}
+	if s.preference != "" {
+		params.Set("preference", s.preference)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *ExistsService) Validate() error {
+	var invalid []string
+	if s.id == "" {
+		invalid = append(invalid, "Id")
+	}
+	if s.index == "" {
+		invalid = append(invalid, "Index")
+	}
+	if s.typ == "" {
+		invalid = append(invalid, "Type")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *ExistsService) Do() (bool, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return false, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return false, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("HEAD", path, params, nil, 404)
+	if err != nil {
+		return false, err
+	}
+
+	// Return operation response
+	switch res.StatusCode {
+	case http.StatusOK:
+		return true, nil
+	case http.StatusNotFound:
+		return false, nil
+	default:
+		return false, fmt.Errorf("elastic: got HTTP code %d when it should have been either 200 or 404", res.StatusCode)
+	}
+}

vendor/gopkg.in/olivere/elastic.v3/explain.go

@@ -0,0 +1,329 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"log"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+var (
+	_ = fmt.Print
+	_ = log.Print
+	_ = strings.Index
+	_ = uritemplates.Expand
+	_ = url.Parse
+)
+
+// ExplainService computes a score explanation for a query and
+// a specific document.
+// See http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-explain.html.
+type ExplainService struct {
+	client                 *Client
+	pretty                 bool
+	id                     string
+	index                  string
+	typ                    string
+	q                      string
+	routing                string
+	lenient                *bool
+	analyzer               string
+	df                     string
+	fields                 []string
+	lowercaseExpandedTerms *bool
+	xSourceInclude         []string
+	analyzeWildcard        *bool
+	parent                 string
+	preference             string
+	xSource                []string
+	defaultOperator        string
+	xSourceExclude         []string
+	source                 string
+	bodyJson               interface{}
+	bodyString             string
+}
+
+// NewExplainService creates a new ExplainService.
+func NewExplainService(client *Client) *ExplainService {
+	return &ExplainService{
+		client:         client,
+		xSource:        make([]string, 0),
+		xSourceExclude: make([]string, 0),
+		fields:         make([]string, 0),
+		xSourceInclude: make([]string, 0),
+	}
+}
+
+// Id is the document ID.
+func (s *ExplainService) Id(id string) *ExplainService {
+	s.id = id
+	return s
+}
+
+// Index is the name of the index.
+func (s *ExplainService) Index(index string) *ExplainService {
+	s.index = index
+	return s
+}
+
+// Type is the type of the document.
+func (s *ExplainService) Type(typ string) *ExplainService {
+	s.typ = typ
+	return s
+}
+
+// Source is the URL-encoded query definition (instead of using the request body).
+func (s *ExplainService) Source(source string) *ExplainService {
+	s.source = source
+	return s
+}
+
+// XSourceExclude is a list of fields to exclude from the returned _source field.
+func (s *ExplainService) XSourceExclude(xSourceExclude ...string) *ExplainService {
+	s.xSourceExclude = append(s.xSourceExclude, xSourceExclude...)
+	return s
+}
+
+// Lenient specifies whether format-based query failures
+// (such as providing text to a numeric field) should be ignored.
+func (s *ExplainService) Lenient(lenient bool) *ExplainService {
+	s.lenient = &lenient
+	return s
+}
+
+// Query in the Lucene query string syntax.
+func (s *ExplainService) Q(q string) *ExplainService {
+	s.q = q
+	return s
+}
+
+// Routing sets a specific routing value.
+func (s *ExplainService) Routing(routing string) *ExplainService {
+	s.routing = routing
+	return s
+}
+
+// AnalyzeWildcard specifies whether wildcards and prefix queries
+// in the query string query should be analyzed (default: false).
+func (s *ExplainService) AnalyzeWildcard(analyzeWildcard bool) *ExplainService {
+	s.analyzeWildcard = &analyzeWildcard
+	return s
+}
+
+// Analyzer is the analyzer for the query string query.
+func (s *ExplainService) Analyzer(analyzer string) *ExplainService {
+	s.analyzer = analyzer
+	return s
+}
+
+// Df is the default field for query string query (default: _all).
+func (s *ExplainService) Df(df string) *ExplainService {
+	s.df = df
+	return s
+}
+
+// Fields is a list of fields to return in the response.
+func (s *ExplainService) Fields(fields ...string) *ExplainService {
+	s.fields = append(s.fields, fields...)
+	return s
+}
+
+// LowercaseExpandedTerms specifies whether query terms should be lowercased.
+func (s *ExplainService) LowercaseExpandedTerms(lowercaseExpandedTerms bool) *ExplainService {
+	s.lowercaseExpandedTerms = &lowercaseExpandedTerms
+	return s
+}
+
+// XSourceInclude is a list of fields to extract and return from the _source field.
+func (s *ExplainService) XSourceInclude(xSourceInclude ...string) *ExplainService {
+	s.xSourceInclude = append(s.xSourceInclude, xSourceInclude...)
+	return s
+}
+
+// DefaultOperator is the default operator for query string query (AND or OR).
+func (s *ExplainService) DefaultOperator(defaultOperator string) *ExplainService {
+	s.defaultOperator = defaultOperator
+	return s
+}
+
+// Parent is the ID of the parent document.
+func (s *ExplainService) Parent(parent string) *ExplainService {
+	s.parent = parent
+	return s
+}
+
+// Preference specifies the node or shard the operation should be performed on (default: random).
+func (s *ExplainService) Preference(preference string) *ExplainService {
+	s.preference = preference
+	return s
+}
+
+// XSource is true or false to return the _source field or not, or a list of fields to return.
+func (s *ExplainService) XSource(xSource ...string) *ExplainService {
+	s.xSource = append(s.xSource, xSource...)
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *ExplainService) Pretty(pretty bool) *ExplainService {
+	s.pretty = pretty
+	return s
+}
+
+// Query sets a query definition using the Query DSL.
+func (s *ExplainService) Query(query Query) *ExplainService {
+	src, err := query.Source()
+	if err != nil {
+		// Do nothing in case of an error
+		return s
+	}
+	body := make(map[string]interface{})
+	body["query"] = src
+	s.bodyJson = body
+	return s
+}
+
+// BodyJson sets the query definition using the Query DSL.
+func (s *ExplainService) BodyJson(body interface{}) *ExplainService {
+	s.bodyJson = body
+	return s
+}
+
+// BodyString sets the query definition using the Query DSL as a string.
+func (s *ExplainService) BodyString(body string) *ExplainService {
+	s.bodyString = body
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *ExplainService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}/{type}/{id}/_explain", map[string]string{
+		"id":    s.id,
+		"index": s.index,
+		"type":  s.typ,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if len(s.xSource) > 0 {
+		params.Set("_source", strings.Join(s.xSource, ","))
+	}
+	if s.defaultOperator != "" {
+		params.Set("default_operator", s.defaultOperator)
+	}
+	if s.parent != "" {
+		params.Set("parent", s.parent)
+	}
+	if s.preference != "" {
+		params.Set("preference", s.preference)
+	}
+	if s.source != "" {
+		params.Set("source", s.source)
+	}
+	if len(s.xSourceExclude) > 0 {
+		params.Set("_source_exclude", strings.Join(s.xSourceExclude, ","))
+	}
+	if s.lenient != nil {
+		params.Set("lenient", fmt.Sprintf("%v", *s.lenient))
+	}
+	if s.q != "" {
+		params.Set("q", s.q)
+	}
+	if s.routing != "" {
+		params.Set("routing", s.routing)
+	}
+	if len(s.fields) > 0 {
+		params.Set("fields", strings.Join(s.fields, ","))
+	}
+	if s.lowercaseExpandedTerms != nil {
+		params.Set("lowercase_expanded_terms", fmt.Sprintf("%v", *s.lowercaseExpandedTerms))
+	}
+	if len(s.xSourceInclude) > 0 {
+		params.Set("_source_include", strings.Join(s.xSourceInclude, ","))
+	}
+	if s.analyzeWildcard != nil {
+		params.Set("analyze_wildcard", fmt.Sprintf("%v", *s.analyzeWildcard))
+	}
+	if s.analyzer != "" {
+		params.Set("analyzer", s.analyzer)
+	}
+	if s.df != "" {
+		params.Set("df", s.df)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *ExplainService) Validate() error {
+	var invalid []string
+	if s.index == "" {
+		invalid = append(invalid, "Index")
+	}
+	if s.typ == "" {
+		invalid = append(invalid, "Type")
+	}
+	if s.id == "" {
+		invalid = append(invalid, "Id")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *ExplainService) Do() (*ExplainResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Setup HTTP request body
+	var body interface{}
+	if s.bodyJson != nil {
+		body = s.bodyJson
+	} else {
+		body = s.bodyString
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("GET", path, params, body)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(ExplainResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// ExplainResponse is the response of ExplainService.Do.
+type ExplainResponse struct {
+	Index       string                 `json:"_index"`
+	Type        string                 `json:"_type"`
+	Id          string                 `json:"_id"`
+	Matched     bool                   `json:"matched"`
+	Explanation map[string]interface{} `json:"explanation"`
+}

vendor/gopkg.in/olivere/elastic.v3/fetch_source_context.go

@@ -0,0 +1,74 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"net/url"
+	"strings"
+)
+
+type FetchSourceContext struct {
+	fetchSource     bool
+	transformSource bool
+	includes        []string
+	excludes        []string
+}
+
+func NewFetchSourceContext(fetchSource bool) *FetchSourceContext {
+	return &FetchSourceContext{
+		fetchSource: fetchSource,
+		includes:    make([]string, 0),
+		excludes:    make([]string, 0),
+	}
+}
+
+func (fsc *FetchSourceContext) FetchSource() bool {
+	return fsc.fetchSource
+}
+
+func (fsc *FetchSourceContext) SetFetchSource(fetchSource bool) {
+	fsc.fetchSource = fetchSource
+}
+
+func (fsc *FetchSourceContext) Include(includes ...string) *FetchSourceContext {
+	fsc.includes = append(fsc.includes, includes...)
+	return fsc
+}
+
+func (fsc *FetchSourceContext) Exclude(excludes ...string) *FetchSourceContext {
+	fsc.excludes = append(fsc.excludes, excludes...)
+	return fsc
+}
+
+func (fsc *FetchSourceContext) TransformSource(transformSource bool) *FetchSourceContext {
+	fsc.transformSource = transformSource
+	return fsc
+}
+
+func (fsc *FetchSourceContext) Source() (interface{}, error) {
+	if !fsc.fetchSource {
+		return false, nil
+	}
+	return map[string]interface{}{
+		"includes": fsc.includes,
+		"excludes": fsc.excludes,
+	}, nil
+}
+
+// Query returns the parameters in a form suitable for a URL query string.
+func (fsc *FetchSourceContext) Query() url.Values {
+	params := url.Values{}
+	if !fsc.fetchSource {
+		params.Add("_source", "false")
+		return params
+	}
+	if len(fsc.includes) > 0 {
+		params.Add("_source_include", strings.Join(fsc.includes, ","))
+	}
+	if len(fsc.excludes) > 0 {
+		params.Add("_source_exclude", strings.Join(fsc.excludes, ","))
+	}
+	return params
+}

vendor/gopkg.in/olivere/elastic.v3/field_stats.go

@@ -0,0 +1,255 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+const (
+	FieldStatsClusterLevel = "cluster"
+	FieldStatsIndicesLevel = "indices"
+)
+
+// FieldStatsService allows finding statistical properties of a field without executing a search,
+// but looking up measurements that are natively available in the Lucene index.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/search-field-stats.html
+// for details
+type FieldStatsService struct {
+	client            *Client
+	pretty            bool
+	level             string
+	index             []string
+	allowNoIndices    *bool
+	expandWildcards   string
+	fields            []string
+	ignoreUnavailable *bool
+	bodyJson          interface{}
+	bodyString        string
+}
+
+// NewFieldStatsService creates a new FieldStatsService
+func NewFieldStatsService(client *Client) *FieldStatsService {
+	return &FieldStatsService{
+		client: client,
+		index:  make([]string, 0),
+		fields: make([]string, 0),
+	}
+}
+
+// Index is a list of index names; use `_all` or empty string to perform
+// the operation on all indices.
+func (s *FieldStatsService) Index(index ...string) *FieldStatsService {
+	s.index = append(s.index, index...)
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices expression
+// resolves into no concrete indices.
+// (This includes `_all` string or when no indices have been specified).
+func (s *FieldStatsService) AllowNoIndices(allowNoIndices bool) *FieldStatsService {
+	s.allowNoIndices = &allowNoIndices
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both.
+func (s *FieldStatsService) ExpandWildcards(expandWildcards string) *FieldStatsService {
+	s.expandWildcards = expandWildcards
+	return s
+}
+
+// Fields is a list of fields for to get field statistics
+// for (min value, max value, and more).
+func (s *FieldStatsService) Fields(fields ...string) *FieldStatsService {
+	s.fields = append(s.fields, fields...)
+	return s
+}
+
+// IgnoreUnavailable is documented as: Whether specified concrete indices should be ignored when unavailable (missing or closed).
+func (s *FieldStatsService) IgnoreUnavailable(ignoreUnavailable bool) *FieldStatsService {
+	s.ignoreUnavailable = &ignoreUnavailable
+	return s
+}
+
+// Level sets if stats should be returned on a per index level or on a cluster wide level;
+// should be one of 'cluster' or 'indices'; defaults to former
+func (s *FieldStatsService) Level(level string) *FieldStatsService {
+	s.level = level
+	return s
+}
+
+// ClusterLevel is a helper that sets Level to "cluster".
+func (s *FieldStatsService) ClusterLevel() *FieldStatsService {
+	s.level = FieldStatsClusterLevel
+	return s
+}
+
+// IndicesLevel is a helper that sets Level to "indices".
+func (s *FieldStatsService) IndicesLevel() *FieldStatsService {
+	s.level = FieldStatsIndicesLevel
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *FieldStatsService) Pretty(pretty bool) *FieldStatsService {
+	s.pretty = pretty
+	return s
+}
+
+// BodyJson is documented as: Field json objects containing the name and optionally a range to filter out indices result, that have results outside the defined bounds.
+func (s *FieldStatsService) BodyJson(body interface{}) *FieldStatsService {
+	s.bodyJson = body
+	return s
+}
+
+// BodyString is documented as: Field json objects containing the name and optionally a range to filter out indices result, that have results outside the defined bounds.
+func (s *FieldStatsService) BodyString(body string) *FieldStatsService {
+	s.bodyString = body
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *FieldStatsService) buildURL() (string, url.Values, error) {
+	// Build URL
+	var err error
+	var path string
+	if len(s.index) > 0 {
+		path, err = uritemplates.Expand("/{index}/_field_stats", map[string]string{
+			"index": strings.Join(s.index, ","),
+		})
+	} else {
+		path = "/_field_stats"
+	}
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.allowNoIndices != nil {
+		params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	if len(s.fields) > 0 {
+		params.Set("fields", strings.Join(s.fields, ","))
+	}
+	if s.ignoreUnavailable != nil {
+		params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
+	}
+	if s.level != "" {
+		params.Set("level", s.level)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *FieldStatsService) Validate() error {
+	var invalid []string
+	if s.level != "" && (s.level != FieldStatsIndicesLevel && s.level != FieldStatsClusterLevel) {
+		invalid = append(invalid, "Level")
+	}
+	if len(invalid) != 0 {
+		return fmt.Errorf("missing or invalid required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *FieldStatsService) Do() (*FieldStatsResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Setup HTTP request body
+	var body interface{}
+	if s.bodyJson != nil {
+		body = s.bodyJson
+	} else {
+		body = s.bodyString
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("POST", path, params, body, http.StatusNotFound)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO(oe): Is 404 really a valid response here?
+	if res.StatusCode == http.StatusNotFound {
+		return &FieldStatsResponse{make(map[string]IndexFieldStats)}, nil
+	}
+
+	// Return operation response
+	ret := new(FieldStatsResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// -- Request --
+
+// FieldStatsRequest can be used to set up the body to be used in the
+// Field Stats API.
+type FieldStatsRequest struct {
+	Fields           []string                          `json:"fields"`
+	IndexConstraints map[string]*FieldStatsConstraints `json:"index_constraints,omitempty"`
+}
+
+// FieldStatsConstraints is a constraint on a field.
+type FieldStatsConstraints struct {
+	Min *FieldStatsComparison `json:"min_value,omitempty"`
+	Max *FieldStatsComparison `json:"max_value,omitempty"`
+}
+
+// FieldStatsComparison contain all comparison operations that can be used
+// in FieldStatsConstraints.
+type FieldStatsComparison struct {
+	Lte interface{} `json:"lte,omitempty"`
+	Lt  interface{} `json:"lt,omitempty"`
+	Gte interface{} `json:"gte,omitempty"`
+	Gt  interface{} `json:"gt,omitempty"`
+}
+
+// -- Response --
+
+// FieldStatsResponse is the response body content
+type FieldStatsResponse struct {
+	Indices map[string]IndexFieldStats `json:"indices,omitempty"`
+}
+
+// IndexFieldStats contains field stats for an index
+type IndexFieldStats struct {
+	Fields map[string]FieldStats `json:"fields,omitempty"`
+}
+
+// FieldStats contains stats of an individual  field
+type FieldStats struct {
+	MaxDoc                int64       `json:"max_doc"`
+	DocCount              int64       `json:"doc_count"`
+	Density               int64       `json:"density"`
+	SumDocFrequeny        int64       `json:"sum_doc_freq"`
+	SumTotalTermFrequency int64       `json:"sum_total_term_freq"`
+	MinValue              interface{} `json:"min_value"`
+	MinValueAsString      string      `json:"min_value_as_string"`
+	MaxValue              interface{} `json:"max_value"`
+	MaxValueAsString      string      `json:"max_value_as_string"`
+}

vendor/gopkg.in/olivere/elastic.v3/geo_point.go

@@ -0,0 +1,48 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// GeoPoint is a geographic position described via latitude and longitude.
+type GeoPoint struct {
+	Lat float64 `json:"lat"`
+	Lon float64 `json:"lon"`
+}
+
+// Source returns the object to be serialized in Elasticsearch DSL.
+func (pt *GeoPoint) Source() map[string]float64 {
+	return map[string]float64{
+		"lat": pt.Lat,
+		"lon": pt.Lon,
+	}
+}
+
+// GeoPointFromLatLon initializes a new GeoPoint by latitude and longitude.
+func GeoPointFromLatLon(lat, lon float64) *GeoPoint {
+	return &GeoPoint{Lat: lat, Lon: lon}
+}
+
+// GeoPointFromString initializes a new GeoPoint by a string that is
+// formatted as "{latitude},{longitude}", e.g. "40.10210,-70.12091".
+func GeoPointFromString(latLon string) (*GeoPoint, error) {
+	latlon := strings.SplitN(latLon, ",", 2)
+	if len(latlon) != 2 {
+		return nil, fmt.Errorf("elastic: %s is not a valid geo point string", latLon)
+	}
+	lat, err := strconv.ParseFloat(latlon[0], 64)
+	if err != nil {
+		return nil, err
+	}
+	lon, err := strconv.ParseFloat(latlon[1], 64)
+	if err != nil {
+		return nil, err
+	}
+	return &GeoPoint{Lat: lat, Lon: lon}, nil
+}

vendor/gopkg.in/olivere/elastic.v3/get.go

@@ -0,0 +1,271 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// GetService allows to get a typed JSON document from the index based
+// on its id.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html
+// for details.
+type GetService struct {
+	client                        *Client
+	pretty                        bool
+	index                         string
+	typ                           string
+	id                            string
+	routing                       string
+	preference                    string
+	fields                        []string
+	refresh                       *bool
+	realtime                      *bool
+	fsc                           *FetchSourceContext
+	version                       interface{}
+	versionType                   string
+	parent                        string
+	ignoreErrorsOnGeneratedFields *bool
+}
+
+// NewGetService creates a new GetService.
+func NewGetService(client *Client) *GetService {
+	return &GetService{
+		client: client,
+		typ:    "_all",
+	}
+}
+
+/*
+// String returns a string representation of the GetService request.
+func (s *GetService) String() string {
+	return fmt.Sprintf("[%v][%v][%v]: routing [%v]",
+		s.index,
+		s.typ,
+		s.id,
+		s.routing)
+}
+*/
+
+// Index is the name of the index.
+func (s *GetService) Index(index string) *GetService {
+	s.index = index
+	return s
+}
+
+// Type is the type of the document (use `_all` to fetch the first document
+// matching the ID across all types).
+func (s *GetService) Type(typ string) *GetService {
+	s.typ = typ
+	return s
+}
+
+// Id is the document ID.
+func (s *GetService) Id(id string) *GetService {
+	s.id = id
+	return s
+}
+
+// Parent is the ID of the parent document.
+func (s *GetService) Parent(parent string) *GetService {
+	s.parent = parent
+	return s
+}
+
+// Routing is the specific routing value.
+func (s *GetService) Routing(routing string) *GetService {
+	s.routing = routing
+	return s
+}
+
+// Preference specifies the node or shard the operation should be performed on (default: random).
+func (s *GetService) Preference(preference string) *GetService {
+	s.preference = preference
+	return s
+}
+
+// Fields is a list of fields to return in the response.
+func (s *GetService) Fields(fields ...string) *GetService {
+	if s.fields == nil {
+		s.fields = make([]string, 0)
+	}
+	s.fields = append(s.fields, fields...)
+	return s
+}
+
+func (s *GetService) FetchSource(fetchSource bool) *GetService {
+	if s.fsc == nil {
+		s.fsc = NewFetchSourceContext(fetchSource)
+	} else {
+		s.fsc.SetFetchSource(fetchSource)
+	}
+	return s
+}
+
+func (s *GetService) FetchSourceContext(fetchSourceContext *FetchSourceContext) *GetService {
+	s.fsc = fetchSourceContext
+	return s
+}
+
+// Refresh the shard containing the document before performing the operation.
+func (s *GetService) Refresh(refresh bool) *GetService {
+	s.refresh = &refresh
+	return s
+}
+
+// Realtime specifies whether to perform the operation in realtime or search mode.
+func (s *GetService) Realtime(realtime bool) *GetService {
+	s.realtime = &realtime
+	return s
+}
+
+// VersionType is the specific version type.
+func (s *GetService) VersionType(versionType string) *GetService {
+	s.versionType = versionType
+	return s
+}
+
+// Version is an explicit version number for concurrency control.
+func (s *GetService) Version(version interface{}) *GetService {
+	s.version = version
+	return s
+}
+
+// IgnoreErrorsOnGeneratedFields indicates whether to ignore fields that
+// are generated if the transaction log is accessed.
+func (s *GetService) IgnoreErrorsOnGeneratedFields(ignore bool) *GetService {
+	s.ignoreErrorsOnGeneratedFields = &ignore
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *GetService) Pretty(pretty bool) *GetService {
+	s.pretty = pretty
+	return s
+}
+
+// Validate checks if the operation is valid.
+func (s *GetService) Validate() error {
+	var invalid []string
+	if s.id == "" {
+		invalid = append(invalid, "Id")
+	}
+	if s.index == "" {
+		invalid = append(invalid, "Index")
+	}
+	if s.typ == "" {
+		invalid = append(invalid, "Type")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// buildURL builds the URL for the operation.
+func (s *GetService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}/{type}/{id}", map[string]string{
+		"id":    s.id,
+		"index": s.index,
+		"type":  s.typ,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.routing != "" {
+		params.Set("routing", s.routing)
+	}
+	if s.parent != "" {
+		params.Set("parent", s.parent)
+	}
+	if s.preference != "" {
+		params.Set("preference", s.preference)
+	}
+	if len(s.fields) > 0 {
+		params.Set("fields", strings.Join(s.fields, ","))
+	}
+	if s.refresh != nil {
+		params.Set("refresh", fmt.Sprintf("%v", *s.refresh))
+	}
+	if s.version != nil {
+		params.Set("version", fmt.Sprintf("%v", s.version))
+	}
+	if s.versionType != "" {
+		params.Set("version_type", s.versionType)
+	}
+	if s.realtime != nil {
+		params.Set("realtime", fmt.Sprintf("%v", *s.realtime))
+	}
+	if s.ignoreErrorsOnGeneratedFields != nil {
+		params.Add("ignore_errors_on_generated_fields", fmt.Sprintf("%v", *s.ignoreErrorsOnGeneratedFields))
+	}
+	if s.fsc != nil {
+		for k, values := range s.fsc.Query() {
+			params.Add(k, strings.Join(values, ","))
+		}
+	}
+	return path, params, nil
+}
+
+// Do executes the operation.
+func (s *GetService) Do() (*GetResult, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("GET", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(GetResult)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// -- Result of a get request.
+
+// GetResult is the outcome of GetService.Do.
+type GetResult struct {
+	Index     string                 `json:"_index"`     // index meta field
+	Type      string                 `json:"_type"`      // type meta field
+	Id        string                 `json:"_id"`        // id meta field
+	Uid       string                 `json:"_uid"`       // uid meta field (see MapperService.java for all meta fields)
+	Timestamp int64                  `json:"_timestamp"` // timestamp meta field
+	TTL       int64                  `json:"_ttl"`       // ttl meta field
+	Routing   string                 `json:"_routing"`   // routing meta field
+	Parent    string                 `json:"_parent"`    // parent meta field
+	Version   *int64                 `json:"_version"`   // version number, when Version is set to true in SearchService
+	Source    *json.RawMessage       `json:"_source,omitempty"`
+	Found     bool                   `json:"found,omitempty"`
+	Fields    map[string]interface{} `json:"fields,omitempty"`
+	//Error     string                 `json:"error,omitempty"` // used only in MultiGet
+	// TODO double-check that MultiGet now returns details error information
+	Error *ErrorDetails `json:"error,omitempty"` // only used in MultiGet
+}

vendor/gopkg.in/olivere/elastic.v3/get_template.go

@@ -0,0 +1,112 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// GetTemplateService reads a search template.
+// It is documented at http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/search-template.html.
+type GetTemplateService struct {
+	client      *Client
+	pretty      bool
+	id          string
+	version     interface{}
+	versionType string
+}
+
+// NewGetTemplateService creates a new GetTemplateService.
+func NewGetTemplateService(client *Client) *GetTemplateService {
+	return &GetTemplateService{
+		client: client,
+	}
+}
+
+// Id is the template ID.
+func (s *GetTemplateService) Id(id string) *GetTemplateService {
+	s.id = id
+	return s
+}
+
+// Version is an explicit version number for concurrency control.
+func (s *GetTemplateService) Version(version interface{}) *GetTemplateService {
+	s.version = version
+	return s
+}
+
+// VersionType is a specific version type.
+func (s *GetTemplateService) VersionType(versionType string) *GetTemplateService {
+	s.versionType = versionType
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *GetTemplateService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/_search/template/{id}", map[string]string{
+		"id": s.id,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.version != nil {
+		params.Set("version", fmt.Sprintf("%v", s.version))
+	}
+	if s.versionType != "" {
+		params.Set("version_type", s.versionType)
+	}
+
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *GetTemplateService) Validate() error {
+	var invalid []string
+	if s.id == "" {
+		invalid = append(invalid, "Id")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation and returns the template.
+func (s *GetTemplateService) Do() (*GetTemplateResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("GET", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return result
+	ret := new(GetTemplateResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+type GetTemplateResponse struct {
+	Template string `json:"template"`
+}

vendor/gopkg.in/olivere/elastic.v3/highlight.go

@@ -0,0 +1,455 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+// Highlight allows highlighting search results on one or more fields.
+// For details, see:
+// http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-highlighting.html
+type Highlight struct {
+	fields                []*HighlighterField
+	tagsSchema            *string
+	highlightFilter       *bool
+	fragmentSize          *int
+	numOfFragments        *int
+	preTags               []string
+	postTags              []string
+	order                 *string
+	encoder               *string
+	requireFieldMatch     *bool
+	boundaryMaxScan       *int
+	boundaryChars         []rune
+	highlighterType       *string
+	fragmenter            *string
+	highlightQuery        Query
+	noMatchSize           *int
+	phraseLimit           *int
+	options               map[string]interface{}
+	forceSource           *bool
+	useExplicitFieldOrder bool
+}
+
+func NewHighlight() *Highlight {
+	hl := &Highlight{
+		fields:        make([]*HighlighterField, 0),
+		preTags:       make([]string, 0),
+		postTags:      make([]string, 0),
+		boundaryChars: make([]rune, 0),
+		options:       make(map[string]interface{}),
+	}
+	return hl
+}
+
+func (hl *Highlight) Fields(fields ...*HighlighterField) *Highlight {
+	hl.fields = append(hl.fields, fields...)
+	return hl
+}
+
+func (hl *Highlight) Field(name string) *Highlight {
+	field := NewHighlighterField(name)
+	hl.fields = append(hl.fields, field)
+	return hl
+}
+
+func (hl *Highlight) TagsSchema(schemaName string) *Highlight {
+	hl.tagsSchema = &schemaName
+	return hl
+}
+
+func (hl *Highlight) HighlightFilter(highlightFilter bool) *Highlight {
+	hl.highlightFilter = &highlightFilter
+	return hl
+}
+
+func (hl *Highlight) FragmentSize(fragmentSize int) *Highlight {
+	hl.fragmentSize = &fragmentSize
+	return hl
+}
+
+func (hl *Highlight) NumOfFragments(numOfFragments int) *Highlight {
+	hl.numOfFragments = &numOfFragments
+	return hl
+}
+
+func (hl *Highlight) Encoder(encoder string) *Highlight {
+	hl.encoder = &encoder
+	return hl
+}
+
+func (hl *Highlight) PreTags(preTags ...string) *Highlight {
+	hl.preTags = append(hl.preTags, preTags...)
+	return hl
+}
+
+func (hl *Highlight) PostTags(postTags ...string) *Highlight {
+	hl.postTags = append(hl.postTags, postTags...)
+	return hl
+}
+
+func (hl *Highlight) Order(order string) *Highlight {
+	hl.order = &order
+	return hl
+}
+
+func (hl *Highlight) RequireFieldMatch(requireFieldMatch bool) *Highlight {
+	hl.requireFieldMatch = &requireFieldMatch
+	return hl
+}
+
+func (hl *Highlight) BoundaryMaxScan(boundaryMaxScan int) *Highlight {
+	hl.boundaryMaxScan = &boundaryMaxScan
+	return hl
+}
+
+func (hl *Highlight) BoundaryChars(boundaryChars ...rune) *Highlight {
+	hl.boundaryChars = append(hl.boundaryChars, boundaryChars...)
+	return hl
+}
+
+func (hl *Highlight) HighlighterType(highlighterType string) *Highlight {
+	hl.highlighterType = &highlighterType
+	return hl
+}
+
+func (hl *Highlight) Fragmenter(fragmenter string) *Highlight {
+	hl.fragmenter = &fragmenter
+	return hl
+}
+
+func (hl *Highlight) HighlighQuery(highlightQuery Query) *Highlight {
+	hl.highlightQuery = highlightQuery
+	return hl
+}
+
+func (hl *Highlight) NoMatchSize(noMatchSize int) *Highlight {
+	hl.noMatchSize = &noMatchSize
+	return hl
+}
+
+func (hl *Highlight) Options(options map[string]interface{}) *Highlight {
+	hl.options = options
+	return hl
+}
+
+func (hl *Highlight) ForceSource(forceSource bool) *Highlight {
+	hl.forceSource = &forceSource
+	return hl
+}
+
+func (hl *Highlight) UseExplicitFieldOrder(useExplicitFieldOrder bool) *Highlight {
+	hl.useExplicitFieldOrder = useExplicitFieldOrder
+	return hl
+}
+
+// Creates the query source for the bool query.
+func (hl *Highlight) Source() (interface{}, error) {
+	// Returns the map inside of "highlight":
+	// "highlight":{
+	//   ... this ...
+	// }
+	source := make(map[string]interface{})
+	if hl.tagsSchema != nil {
+		source["tags_schema"] = *hl.tagsSchema
+	}
+	if hl.preTags != nil && len(hl.preTags) > 0 {
+		source["pre_tags"] = hl.preTags
+	}
+	if hl.postTags != nil && len(hl.postTags) > 0 {
+		source["post_tags"] = hl.postTags
+	}
+	if hl.order != nil {
+		source["order"] = *hl.order
+	}
+	if hl.highlightFilter != nil {
+		source["highlight_filter"] = *hl.highlightFilter
+	}
+	if hl.fragmentSize != nil {
+		source["fragment_size"] = *hl.fragmentSize
+	}
+	if hl.numOfFragments != nil {
+		source["number_of_fragments"] = *hl.numOfFragments
+	}
+	if hl.encoder != nil {
+		source["encoder"] = *hl.encoder
+	}
+	if hl.requireFieldMatch != nil {
+		source["require_field_match"] = *hl.requireFieldMatch
+	}
+	if hl.boundaryMaxScan != nil {
+		source["boundary_max_scan"] = *hl.boundaryMaxScan
+	}
+	if hl.boundaryChars != nil && len(hl.boundaryChars) > 0 {
+		source["boundary_chars"] = hl.boundaryChars
+	}
+	if hl.highlighterType != nil {
+		source["type"] = *hl.highlighterType
+	}
+	if hl.fragmenter != nil {
+		source["fragmenter"] = *hl.fragmenter
+	}
+	if hl.highlightQuery != nil {
+		src, err := hl.highlightQuery.Source()
+		if err != nil {
+			return nil, err
+		}
+		source["highlight_query"] = src
+	}
+	if hl.noMatchSize != nil {
+		source["no_match_size"] = *hl.noMatchSize
+	}
+	if hl.phraseLimit != nil {
+		source["phrase_limit"] = *hl.phraseLimit
+	}
+	if hl.options != nil && len(hl.options) > 0 {
+		source["options"] = hl.options
+	}
+	if hl.forceSource != nil {
+		source["force_source"] = *hl.forceSource
+	}
+
+	if hl.fields != nil && len(hl.fields) > 0 {
+		if hl.useExplicitFieldOrder {
+			// Use a slice for the fields
+			fields := make([]map[string]interface{}, 0)
+			for _, field := range hl.fields {
+				src, err := field.Source()
+				if err != nil {
+					return nil, err
+				}
+				fmap := make(map[string]interface{})
+				fmap[field.Name] = src
+				fields = append(fields, fmap)
+			}
+			source["fields"] = fields
+		} else {
+			// Use a map for the fields
+			fields := make(map[string]interface{}, 0)
+			for _, field := range hl.fields {
+				src, err := field.Source()
+				if err != nil {
+					return nil, err
+				}
+				fields[field.Name] = src
+			}
+			source["fields"] = fields
+		}
+	}
+
+	return source, nil
+}
+
+// HighlighterField specifies a highlighted field.
+type HighlighterField struct {
+	Name string
+
+	preTags           []string
+	postTags          []string
+	fragmentSize      int
+	fragmentOffset    int
+	numOfFragments    int
+	highlightFilter   *bool
+	order             *string
+	requireFieldMatch *bool
+	boundaryMaxScan   int
+	boundaryChars     []rune
+	highlighterType   *string
+	fragmenter        *string
+	highlightQuery    Query
+	noMatchSize       *int
+	matchedFields     []string
+	phraseLimit       *int
+	options           map[string]interface{}
+	forceSource       *bool
+
+	/*
+		Name              string
+		preTags           []string
+		postTags          []string
+		fragmentSize      int
+		numOfFragments    int
+		fragmentOffset    int
+		highlightFilter   *bool
+		order             string
+		requireFieldMatch *bool
+		boundaryMaxScan   int
+		boundaryChars     []rune
+		highlighterType   string
+		fragmenter        string
+		highlightQuery    Query
+		noMatchSize       *int
+		matchedFields     []string
+		options           map[string]interface{}
+		forceSource       *bool
+	*/
+}
+
+func NewHighlighterField(name string) *HighlighterField {
+	return &HighlighterField{
+		Name:            name,
+		preTags:         make([]string, 0),
+		postTags:        make([]string, 0),
+		fragmentSize:    -1,
+		fragmentOffset:  -1,
+		numOfFragments:  -1,
+		boundaryMaxScan: -1,
+		boundaryChars:   make([]rune, 0),
+		matchedFields:   make([]string, 0),
+		options:         make(map[string]interface{}),
+	}
+}
+
+func (f *HighlighterField) PreTags(preTags ...string) *HighlighterField {
+	f.preTags = append(f.preTags, preTags...)
+	return f
+}
+
+func (f *HighlighterField) PostTags(postTags ...string) *HighlighterField {
+	f.postTags = append(f.postTags, postTags...)
+	return f
+}
+
+func (f *HighlighterField) FragmentSize(fragmentSize int) *HighlighterField {
+	f.fragmentSize = fragmentSize
+	return f
+}
+
+func (f *HighlighterField) FragmentOffset(fragmentOffset int) *HighlighterField {
+	f.fragmentOffset = fragmentOffset
+	return f
+}
+
+func (f *HighlighterField) NumOfFragments(numOfFragments int) *HighlighterField {
+	f.numOfFragments = numOfFragments
+	return f
+}
+
+func (f *HighlighterField) HighlightFilter(highlightFilter bool) *HighlighterField {
+	f.highlightFilter = &highlightFilter
+	return f
+}
+
+func (f *HighlighterField) Order(order string) *HighlighterField {
+	f.order = &order
+	return f
+}
+
+func (f *HighlighterField) RequireFieldMatch(requireFieldMatch bool) *HighlighterField {
+	f.requireFieldMatch = &requireFieldMatch
+	return f
+}
+
+func (f *HighlighterField) BoundaryMaxScan(boundaryMaxScan int) *HighlighterField {
+	f.boundaryMaxScan = boundaryMaxScan
+	return f
+}
+
+func (f *HighlighterField) BoundaryChars(boundaryChars ...rune) *HighlighterField {
+	f.boundaryChars = append(f.boundaryChars, boundaryChars...)
+	return f
+}
+
+func (f *HighlighterField) HighlighterType(highlighterType string) *HighlighterField {
+	f.highlighterType = &highlighterType
+	return f
+}
+
+func (f *HighlighterField) Fragmenter(fragmenter string) *HighlighterField {
+	f.fragmenter = &fragmenter
+	return f
+}
+
+func (f *HighlighterField) HighlightQuery(highlightQuery Query) *HighlighterField {
+	f.highlightQuery = highlightQuery
+	return f
+}
+
+func (f *HighlighterField) NoMatchSize(noMatchSize int) *HighlighterField {
+	f.noMatchSize = &noMatchSize
+	return f
+}
+
+func (f *HighlighterField) Options(options map[string]interface{}) *HighlighterField {
+	f.options = options
+	return f
+}
+
+func (f *HighlighterField) MatchedFields(matchedFields ...string) *HighlighterField {
+	f.matchedFields = append(f.matchedFields, matchedFields...)
+	return f
+}
+
+func (f *HighlighterField) PhraseLimit(phraseLimit int) *HighlighterField {
+	f.phraseLimit = &phraseLimit
+	return f
+}
+
+func (f *HighlighterField) ForceSource(forceSource bool) *HighlighterField {
+	f.forceSource = &forceSource
+	return f
+}
+
+func (f *HighlighterField) Source() (interface{}, error) {
+	source := make(map[string]interface{})
+
+	if f.preTags != nil && len(f.preTags) > 0 {
+		source["pre_tags"] = f.preTags
+	}
+	if f.postTags != nil && len(f.postTags) > 0 {
+		source["post_tags"] = f.postTags
+	}
+	if f.fragmentSize != -1 {
+		source["fragment_size"] = f.fragmentSize
+	}
+	if f.numOfFragments != -1 {
+		source["number_of_fragments"] = f.numOfFragments
+	}
+	if f.fragmentOffset != -1 {
+		source["fragment_offset"] = f.fragmentOffset
+	}
+	if f.highlightFilter != nil {
+		source["highlight_filter"] = *f.highlightFilter
+	}
+	if f.order != nil {
+		source["order"] = *f.order
+	}
+	if f.requireFieldMatch != nil {
+		source["require_field_match"] = *f.requireFieldMatch
+	}
+	if f.boundaryMaxScan != -1 {
+		source["boundary_max_scan"] = f.boundaryMaxScan
+	}
+	if f.boundaryChars != nil && len(f.boundaryChars) > 0 {
+		source["boundary_chars"] = f.boundaryChars
+	}
+	if f.highlighterType != nil {
+		source["type"] = *f.highlighterType
+	}
+	if f.fragmenter != nil {
+		source["fragmenter"] = *f.fragmenter
+	}
+	if f.highlightQuery != nil {
+		src, err := f.highlightQuery.Source()
+		if err != nil {
+			return nil, err
+		}
+		source["highlight_query"] = src
+	}
+	if f.noMatchSize != nil {
+		source["no_match_size"] = *f.noMatchSize
+	}
+	if f.matchedFields != nil && len(f.matchedFields) > 0 {
+		source["matched_fields"] = f.matchedFields
+	}
+	if f.phraseLimit != nil {
+		source["phrase_limit"] = *f.phraseLimit
+	}
+	if f.options != nil && len(f.options) > 0 {
+		source["options"] = f.options
+	}
+	if f.forceSource != nil {
+		source["force_source"] = *f.forceSource
+	}
+
+	return source, nil
+}

vendor/gopkg.in/olivere/elastic.v3/index.go

@@ -0,0 +1,283 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndexService adds or updates a typed JSON document in a specified index,
+// making it searchable.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html
+// for details.
+type IndexService struct {
+	client      *Client
+	pretty      bool
+	id          string
+	index       string
+	typ         string
+	parent      string
+	replication string
+	routing     string
+	timeout     string
+	timestamp   string
+	ttl         string
+	version     interface{}
+	opType      string
+	versionType string
+	refresh     *bool
+	consistency string
+	bodyJson    interface{}
+	bodyString  string
+}
+
+// NewIndexService creates a new IndexService.
+func NewIndexService(client *Client) *IndexService {
+	return &IndexService{
+		client: client,
+	}
+}
+
+// Id is the document ID.
+func (s *IndexService) Id(id string) *IndexService {
+	s.id = id
+	return s
+}
+
+// Index is the name of the index.
+func (s *IndexService) Index(index string) *IndexService {
+	s.index = index
+	return s
+}
+
+// Type is the type of the document.
+func (s *IndexService) Type(typ string) *IndexService {
+	s.typ = typ
+	return s
+}
+
+// Consistency is an explicit write consistency setting for the operation.
+func (s *IndexService) Consistency(consistency string) *IndexService {
+	s.consistency = consistency
+	return s
+}
+
+// Refresh the index after performing the operation.
+func (s *IndexService) Refresh(refresh bool) *IndexService {
+	s.refresh = &refresh
+	return s
+}
+
+// Ttl is an expiration time for the document.
+func (s *IndexService) Ttl(ttl string) *IndexService {
+	s.ttl = ttl
+	return s
+}
+
+// TTL is an expiration time for the document (alias for Ttl).
+func (s *IndexService) TTL(ttl string) *IndexService {
+	s.ttl = ttl
+	return s
+}
+
+// Version is an explicit version number for concurrency control.
+func (s *IndexService) Version(version interface{}) *IndexService {
+	s.version = version
+	return s
+}
+
+// OpType is an explicit operation type, i.e. "create" or "index" (default).
+func (s *IndexService) OpType(opType string) *IndexService {
+	s.opType = opType
+	return s
+}
+
+// Parent is the ID of the parent document.
+func (s *IndexService) Parent(parent string) *IndexService {
+	s.parent = parent
+	return s
+}
+
+// Replication is a specific replication type.
+func (s *IndexService) Replication(replication string) *IndexService {
+	s.replication = replication
+	return s
+}
+
+// Routing is a specific routing value.
+func (s *IndexService) Routing(routing string) *IndexService {
+	s.routing = routing
+	return s
+}
+
+// Timeout is an explicit operation timeout.
+func (s *IndexService) Timeout(timeout string) *IndexService {
+	s.timeout = timeout
+	return s
+}
+
+// Timestamp is an explicit timestamp for the document.
+func (s *IndexService) Timestamp(timestamp string) *IndexService {
+	s.timestamp = timestamp
+	return s
+}
+
+// VersionType is a specific version type.
+func (s *IndexService) VersionType(versionType string) *IndexService {
+	s.versionType = versionType
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndexService) Pretty(pretty bool) *IndexService {
+	s.pretty = pretty
+	return s
+}
+
+// BodyJson is the document as a serializable JSON interface.
+func (s *IndexService) BodyJson(body interface{}) *IndexService {
+	s.bodyJson = body
+	return s
+}
+
+// BodyString is the document encoded as a string.
+func (s *IndexService) BodyString(body string) *IndexService {
+	s.bodyString = body
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndexService) buildURL() (string, string, url.Values, error) {
+	var err error
+	var method, path string
+
+	if s.id != "" {
+		// Create document with manual id
+		method = "PUT"
+		path, err = uritemplates.Expand("/{index}/{type}/{id}", map[string]string{
+			"id":    s.id,
+			"index": s.index,
+			"type":  s.typ,
+		})
+	} else {
+		// Automatic ID generation
+		// See https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html#index-creation
+		method = "POST"
+		path, err = uritemplates.Expand("/{index}/{type}/", map[string]string{
+			"index": s.index,
+			"type":  s.typ,
+		})
+	}
+	if err != nil {
+		return "", "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.consistency != "" {
+		params.Set("consistency", s.consistency)
+	}
+	if s.refresh != nil {
+		params.Set("refresh", fmt.Sprintf("%v", *s.refresh))
+	}
+	if s.opType != "" {
+		params.Set("op_type", s.opType)
+	}
+	if s.parent != "" {
+		params.Set("parent", s.parent)
+	}
+	if s.replication != "" {
+		params.Set("replication", s.replication)
+	}
+	if s.routing != "" {
+		params.Set("routing", s.routing)
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+	if s.timestamp != "" {
+		params.Set("timestamp", s.timestamp)
+	}
+	if s.ttl != "" {
+		params.Set("ttl", s.ttl)
+	}
+	if s.version != nil {
+		params.Set("version", fmt.Sprintf("%v", s.version))
+	}
+	if s.versionType != "" {
+		params.Set("version_type", s.versionType)
+	}
+	return method, path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndexService) Validate() error {
+	var invalid []string
+	if s.index == "" {
+		invalid = append(invalid, "Index")
+	}
+	if s.typ == "" {
+		invalid = append(invalid, "Type")
+	}
+	if s.bodyString == "" && s.bodyJson == nil {
+		invalid = append(invalid, "BodyJson")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndexService) Do() (*IndexResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	method, path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Setup HTTP request body
+	var body interface{}
+	if s.bodyJson != nil {
+		body = s.bodyJson
+	} else {
+		body = s.bodyString
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest(method, path, params, body)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(IndexResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// IndexResponse is the result of indexing a document in Elasticsearch.
+type IndexResponse struct {
+	// TODO _shards { total, failed, successful }
+	Index   string `json:"_index"`
+	Type    string `json:"_type"`
+	Id      string `json:"_id"`
+	Version int    `json:"_version"`
+	Created bool   `json:"created"`
+}

vendor/gopkg.in/olivere/elastic.v3/indices_close.go

@@ -0,0 +1,152 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesCloseService closes an index.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-open-close.html
+// for details.
+type IndicesCloseService struct {
+	client            *Client
+	pretty            bool
+	index             string
+	timeout           string
+	masterTimeout     string
+	ignoreUnavailable *bool
+	allowNoIndices    *bool
+	expandWildcards   string
+}
+
+// NewIndicesCloseService creates and initializes a new IndicesCloseService.
+func NewIndicesCloseService(client *Client) *IndicesCloseService {
+	return &IndicesCloseService{client: client}
+}
+
+// Index is the name of the index to close.
+func (s *IndicesCloseService) Index(index string) *IndicesCloseService {
+	s.index = index
+	return s
+}
+
+// Timeout is an explicit operation timeout.
+func (s *IndicesCloseService) Timeout(timeout string) *IndicesCloseService {
+	s.timeout = timeout
+	return s
+}
+
+// MasterTimeout specifies the timeout for connection to master.
+func (s *IndicesCloseService) MasterTimeout(masterTimeout string) *IndicesCloseService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// IgnoreUnavailable indicates whether specified concrete indices should be
+// ignored when unavailable (missing or closed).
+func (s *IndicesCloseService) IgnoreUnavailable(ignoreUnavailable bool) *IndicesCloseService {
+	s.ignoreUnavailable = &ignoreUnavailable
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices
+// expression resolves into no concrete indices. (This includes `_all` string or when no indices have been specified).
+func (s *IndicesCloseService) AllowNoIndices(allowNoIndices bool) *IndicesCloseService {
+	s.allowNoIndices = &allowNoIndices
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both.
+func (s *IndicesCloseService) ExpandWildcards(expandWildcards string) *IndicesCloseService {
+	s.expandWildcards = expandWildcards
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndicesCloseService) Pretty(pretty bool) *IndicesCloseService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndicesCloseService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}/_close", map[string]string{
+		"index": s.index,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.allowNoIndices != nil {
+		params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+	if s.masterTimeout != "" {
+		params.Set("master_timeout", s.masterTimeout)
+	}
+	if s.ignoreUnavailable != nil {
+		params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
+	}
+
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndicesCloseService) Validate() error {
+	var invalid []string
+	if s.index == "" {
+		invalid = append(invalid, "Index")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndicesCloseService) Do() (*IndicesCloseResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("POST", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(IndicesCloseResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// IndicesCloseResponse is the response of IndicesCloseService.Do.
+type IndicesCloseResponse struct {
+	Acknowledged bool `json:"acknowledged"`
+}

vendor/gopkg.in/olivere/elastic.v3/indices_create.go

@@ -0,0 +1,128 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"errors"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesCreateService creates a new index.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-create-index.html
+// for details.
+type IndicesCreateService struct {
+	client        *Client
+	pretty        bool
+	index         string
+	timeout       string
+	masterTimeout string
+	bodyJson      interface{}
+	bodyString    string
+}
+
+// NewIndicesCreateService returns a new IndicesCreateService.
+func NewIndicesCreateService(client *Client) *IndicesCreateService {
+	return &IndicesCreateService{client: client}
+}
+
+// Index is the name of the index to create.
+func (b *IndicesCreateService) Index(index string) *IndicesCreateService {
+	b.index = index
+	return b
+}
+
+// Timeout the explicit operation timeout, e.g. "5s".
+func (s *IndicesCreateService) Timeout(timeout string) *IndicesCreateService {
+	s.timeout = timeout
+	return s
+}
+
+// MasterTimeout specifies the timeout for connection to master.
+func (s *IndicesCreateService) MasterTimeout(masterTimeout string) *IndicesCreateService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// Body specifies the configuration of the index as a string.
+// It is an alias for BodyString.
+func (b *IndicesCreateService) Body(body string) *IndicesCreateService {
+	b.bodyString = body
+	return b
+}
+
+// BodyString specifies the configuration of the index as a string.
+func (b *IndicesCreateService) BodyString(body string) *IndicesCreateService {
+	b.bodyString = body
+	return b
+}
+
+// BodyJson specifies the configuration of the index. The interface{} will
+// be serializes as a JSON document, so use a map[string]interface{}.
+func (b *IndicesCreateService) BodyJson(body interface{}) *IndicesCreateService {
+	b.bodyJson = body
+	return b
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (b *IndicesCreateService) Pretty(pretty bool) *IndicesCreateService {
+	b.pretty = pretty
+	return b
+}
+
+// Do executes the operation.
+func (b *IndicesCreateService) Do() (*IndicesCreateResult, error) {
+	if b.index == "" {
+		return nil, errors.New("missing index name")
+	}
+
+	// Build url
+	path, err := uritemplates.Expand("/{index}", map[string]string{
+		"index": b.index,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	params := make(url.Values)
+	if b.pretty {
+		params.Set("pretty", "1")
+	}
+	if b.masterTimeout != "" {
+		params.Set("master_timeout", b.masterTimeout)
+	}
+	if b.timeout != "" {
+		params.Set("timeout", b.timeout)
+	}
+
+	// Setup HTTP request body
+	var body interface{}
+	if b.bodyJson != nil {
+		body = b.bodyJson
+	} else {
+		body = b.bodyString
+	}
+
+	// Get response
+	res, err := b.client.PerformRequest("PUT", path, params, body)
+	if err != nil {
+		return nil, err
+	}
+
+	ret := new(IndicesCreateResult)
+	if err := b.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// -- Result of a create index request.
+
+// IndicesCreateResult is the outcome of creating a new index.
+type IndicesCreateResult struct {
+	Acknowledged bool `json:"acknowledged"`
+}

vendor/gopkg.in/olivere/elastic.v3/indices_delete.go

@@ -0,0 +1,128 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesDeleteService allows to delete existing indices.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-delete-index.html
+// for details.
+type IndicesDeleteService struct {
+	client        *Client
+	pretty        bool
+	index         []string
+	timeout       string
+	masterTimeout string
+}
+
+// NewIndicesDeleteService creates and initializes a new IndicesDeleteService.
+func NewIndicesDeleteService(client *Client) *IndicesDeleteService {
+	return &IndicesDeleteService{
+		client: client,
+		index:  make([]string, 0),
+	}
+}
+
+// Index adds the list of indices to delete.
+// Use `_all` or `*` string to delete all indices.
+func (s *IndicesDeleteService) Index(index []string) *IndicesDeleteService {
+	s.index = index
+	return s
+}
+
+// Timeout is an explicit operation timeout.
+func (s *IndicesDeleteService) Timeout(timeout string) *IndicesDeleteService {
+	s.timeout = timeout
+	return s
+}
+
+// MasterTimeout specifies the timeout for connection to master.
+func (s *IndicesDeleteService) MasterTimeout(masterTimeout string) *IndicesDeleteService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndicesDeleteService) Pretty(pretty bool) *IndicesDeleteService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndicesDeleteService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}", map[string]string{
+		"index": strings.Join(s.index, ","),
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+	if s.masterTimeout != "" {
+		params.Set("master_timeout", s.masterTimeout)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndicesDeleteService) Validate() error {
+	var invalid []string
+	if len(s.index) == 0 {
+		invalid = append(invalid, "Index")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndicesDeleteService) Do() (*IndicesDeleteResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("DELETE", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(IndicesDeleteResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// -- Result of a delete index request.
+
+// IndicesDeleteResponse is the response of IndicesDeleteService.Do.
+type IndicesDeleteResponse struct {
+	Acknowledged bool `json:"acknowledged"`
+}

vendor/gopkg.in/olivere/elastic.v3/indices_delete_template.go

@@ -0,0 +1,121 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesDeleteTemplateService deletes index templates.
+// See http://www.elasticsearch.org/guide/en/elasticsearch/reference/1.4/indices-templates.html.
+type IndicesDeleteTemplateService struct {
+	client        *Client
+	pretty        bool
+	name          string
+	timeout       string
+	masterTimeout string
+}
+
+// NewIndicesDeleteTemplateService creates a new IndicesDeleteTemplateService.
+func NewIndicesDeleteTemplateService(client *Client) *IndicesDeleteTemplateService {
+	return &IndicesDeleteTemplateService{
+		client: client,
+	}
+}
+
+// Name is the name of the template.
+func (s *IndicesDeleteTemplateService) Name(name string) *IndicesDeleteTemplateService {
+	s.name = name
+	return s
+}
+
+// Timeout is an explicit operation timeout.
+func (s *IndicesDeleteTemplateService) Timeout(timeout string) *IndicesDeleteTemplateService {
+	s.timeout = timeout
+	return s
+}
+
+// MasterTimeout specifies the timeout for connection to master.
+func (s *IndicesDeleteTemplateService) MasterTimeout(masterTimeout string) *IndicesDeleteTemplateService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndicesDeleteTemplateService) Pretty(pretty bool) *IndicesDeleteTemplateService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndicesDeleteTemplateService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/_template/{name}", map[string]string{
+		"name": s.name,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.timeout != "" {
+		params.Set("timeout", s.timeout)
+	}
+	if s.masterTimeout != "" {
+		params.Set("master_timeout", s.masterTimeout)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndicesDeleteTemplateService) Validate() error {
+	var invalid []string
+	if s.name == "" {
+		invalid = append(invalid, "Name")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndicesDeleteTemplateService) Do() (*IndicesDeleteTemplateResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("DELETE", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(IndicesDeleteTemplateResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// IndicesDeleteTemplateResponse is the response of IndicesDeleteTemplateService.Do.
+type IndicesDeleteTemplateResponse struct {
+	Acknowledged bool `json:"acknowledged,omitempty"`
+}

vendor/gopkg.in/olivere/elastic.v3/indices_delete_warmer.go

@@ -0,0 +1,130 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesDeleteWarmerService allows to delete a warmer.
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-warmers.html.
+type IndicesDeleteWarmerService struct {
+	client        *Client
+	pretty        bool
+	index         []string
+	name          []string
+	masterTimeout string
+}
+
+// NewIndicesDeleteWarmerService creates a new IndicesDeleteWarmerService.
+func NewIndicesDeleteWarmerService(client *Client) *IndicesDeleteWarmerService {
+	return &IndicesDeleteWarmerService{
+		client: client,
+		index:  make([]string, 0),
+		name:   make([]string, 0),
+	}
+}
+
+// Index is a list of index names the mapping should be added to
+// (supports wildcards); use `_all` or omit to add the mapping on all indices.
+func (s *IndicesDeleteWarmerService) Index(indices ...string) *IndicesDeleteWarmerService {
+	s.index = append(s.index, indices...)
+	return s
+}
+
+// Name is a list of warmer names to delete (supports wildcards);
+// use `_all` to delete all warmers in the specified indices.
+func (s *IndicesDeleteWarmerService) Name(name ...string) *IndicesDeleteWarmerService {
+	s.name = append(s.name, name...)
+	return s
+}
+
+// MasterTimeout specifies the timeout for connection to master.
+func (s *IndicesDeleteWarmerService) MasterTimeout(masterTimeout string) *IndicesDeleteWarmerService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndicesDeleteWarmerService) Pretty(pretty bool) *IndicesDeleteWarmerService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndicesDeleteWarmerService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}/_warmer/{name}", map[string]string{
+		"index": strings.Join(s.index, ","),
+		"name":  strings.Join(s.name, ","),
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.masterTimeout != "" {
+		params.Set("master_timeout", s.masterTimeout)
+	}
+	if len(s.name) > 0 {
+		params.Set("name", strings.Join(s.name, ","))
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndicesDeleteWarmerService) Validate() error {
+	var invalid []string
+	if len(s.index) == 0 {
+		invalid = append(invalid, "Index")
+	}
+	if len(s.name) == 0 {
+		invalid = append(invalid, "Name")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndicesDeleteWarmerService) Do() (*DeleteWarmerResponse, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return nil, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return nil, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("DELETE", path, params, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return operation response
+	ret := new(DeleteWarmerResponse)
+	if err := s.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// DeleteWarmerResponse is the response of IndicesDeleteWarmerService.Do.
+type DeleteWarmerResponse struct {
+	Acknowledged bool `json:"acknowledged"`
+}

vendor/gopkg.in/olivere/elastic.v3/indices_exists.go

@@ -0,0 +1,149 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesExistsService checks if an index or indices exist or not.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/master/indices-exists.html
+// for details.
+type IndicesExistsService struct {
+	client            *Client
+	pretty            bool
+	index             []string
+	ignoreUnavailable *bool
+	allowNoIndices    *bool
+	expandWildcards   string
+	local             *bool
+}
+
+// NewIndicesExistsService creates and initializes a new IndicesExistsService.
+func NewIndicesExistsService(client *Client) *IndicesExistsService {
+	return &IndicesExistsService{
+		client: client,
+		index:  make([]string, 0),
+	}
+}
+
+// Index is a list of one or more indices to check.
+func (s *IndicesExistsService) Index(index []string) *IndicesExistsService {
+	s.index = index
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices expression
+// resolves into no concrete indices. (This includes `_all` string or
+// when no indices have been specified).
+func (s *IndicesExistsService) AllowNoIndices(allowNoIndices bool) *IndicesExistsService {
+	s.allowNoIndices = &allowNoIndices
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both.
+func (s *IndicesExistsService) ExpandWildcards(expandWildcards string) *IndicesExistsService {
+	s.expandWildcards = expandWildcards
+	return s
+}
+
+// Local, when set, returns local information and does not retrieve the state
+// from master node (default: false).
+func (s *IndicesExistsService) Local(local bool) *IndicesExistsService {
+	s.local = &local
+	return s
+}
+
+// IgnoreUnavailable indicates whether specified concrete indices should be
+// ignored when unavailable (missing or closed).
+func (s *IndicesExistsService) IgnoreUnavailable(ignoreUnavailable bool) *IndicesExistsService {
+	s.ignoreUnavailable = &ignoreUnavailable
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndicesExistsService) Pretty(pretty bool) *IndicesExistsService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndicesExistsService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}", map[string]string{
+		"index": strings.Join(s.index, ","),
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.local != nil {
+		params.Set("local", fmt.Sprintf("%v", *s.local))
+	}
+	if s.ignoreUnavailable != nil {
+		params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
+	}
+	if s.allowNoIndices != nil {
+		params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndicesExistsService) Validate() error {
+	var invalid []string
+	if len(s.index) == 0 {
+		invalid = append(invalid, "Index")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndicesExistsService) Do() (bool, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return false, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return false, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("HEAD", path, params, nil, 404)
+	if err != nil {
+		return false, err
+	}
+
+	// Return operation response
+	switch res.StatusCode {
+	case http.StatusOK:
+		return true, nil
+	case http.StatusNotFound:
+		return false, nil
+	default:
+		return false, fmt.Errorf("elastic: got HTTP code %d when it should have been either 200 or 404", res.StatusCode)
+	}
+}

vendor/gopkg.in/olivere/elastic.v3/indices_exists_template.go

@@ -0,0 +1,112 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesExistsTemplateService checks if a given template exists.
+// See http://www.elastic.co/guide/en/elasticsearch/reference/current/indices-templates.html#indices-templates-exists
+// for documentation.
+type IndicesExistsTemplateService struct {
+	client *Client
+	pretty bool
+	name   string
+	local  *bool
+}
+
+// NewIndicesExistsTemplateService creates a new IndicesExistsTemplateService.
+func NewIndicesExistsTemplateService(client *Client) *IndicesExistsTemplateService {
+	return &IndicesExistsTemplateService{
+		client: client,
+	}
+}
+
+// Name is the name of the template.
+func (s *IndicesExistsTemplateService) Name(name string) *IndicesExistsTemplateService {
+	s.name = name
+	return s
+}
+
+// Local indicates whether to return local information, i.e. do not retrieve
+// the state from master node (default: false).
+func (s *IndicesExistsTemplateService) Local(local bool) *IndicesExistsTemplateService {
+	s.local = &local
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndicesExistsTemplateService) Pretty(pretty bool) *IndicesExistsTemplateService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndicesExistsTemplateService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/_template/{name}", map[string]string{
+		"name": s.name,
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.local != nil {
+		params.Set("local", fmt.Sprintf("%v", *s.local))
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndicesExistsTemplateService) Validate() error {
+	var invalid []string
+	if s.name == "" {
+		invalid = append(invalid, "Name")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndicesExistsTemplateService) Do() (bool, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return false, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return false, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("HEAD", path, params, nil, 404)
+	if err != nil {
+		return false, err
+	}
+
+	// Return operation response
+	switch res.StatusCode {
+	case http.StatusOK:
+		return true, nil
+	case http.StatusNotFound:
+		return false, nil
+	default:
+		return false, fmt.Errorf("elastic: got HTTP code %d when it should have been either 200 or 404", res.StatusCode)
+	}
+}

vendor/gopkg.in/olivere/elastic.v3/indices_exists_type.go

@@ -0,0 +1,161 @@
+// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesExistsTypeService checks if one or more types exist in one or more indices.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-types-exists.html
+// for details.
+type IndicesExistsTypeService struct {
+	client            *Client
+	pretty            bool
+	typ               []string
+	index             []string
+	expandWildcards   string
+	local             *bool
+	ignoreUnavailable *bool
+	allowNoIndices    *bool
+}
+
+// NewIndicesExistsTypeService creates a new IndicesExistsTypeService.
+func NewIndicesExistsTypeService(client *Client) *IndicesExistsTypeService {
+	return &IndicesExistsTypeService{
+		client: client,
+		index:  make([]string, 0),
+		typ:    make([]string, 0),
+	}
+}
+
+// Index is a list of index names; use `_all` to check the types across all indices.
+func (s *IndicesExistsTypeService) Index(indices ...string) *IndicesExistsTypeService {
+	s.index = append(s.index, indices...)
+	return s
+}
+
+// Type is a list of document types to check.
+func (s *IndicesExistsTypeService) Type(types ...string) *IndicesExistsTypeService {
+	s.typ = append(s.typ, types...)
+	return s
+}
+
+// IgnoreUnavailable indicates whether specified concrete indices should be
+// ignored when unavailable (missing or closed).
+func (s *IndicesExistsTypeService) IgnoreUnavailable(ignoreUnavailable bool) *IndicesExistsTypeService {
+	s.ignoreUnavailable = &ignoreUnavailable
+	return s
+}
+
+// AllowNoIndices indicates whether to ignore if a wildcard indices
+// expression resolves into no concrete indices.
+// (This includes `_all` string or when no indices have been specified).
+func (s *IndicesExistsTypeService) AllowNoIndices(allowNoIndices bool) *IndicesExistsTypeService {
+	s.allowNoIndices = &allowNoIndices
+	return s
+}
+
+// ExpandWildcards indicates whether to expand wildcard expression to
+// concrete indices that are open, closed or both.
+func (s *IndicesExistsTypeService) ExpandWildcards(expandWildcards string) *IndicesExistsTypeService {
+	s.expandWildcards = expandWildcards
+	return s
+}
+
+// Local specifies whether to return local information, i.e. do not retrieve
+// the state from master node (default: false).
+func (s *IndicesExistsTypeService) Local(local bool) *IndicesExistsTypeService {
+	s.local = &local
+	return s
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (s *IndicesExistsTypeService) Pretty(pretty bool) *IndicesExistsTypeService {
+	s.pretty = pretty
+	return s
+}
+
+// buildURL builds the URL for the operation.
+func (s *IndicesExistsTypeService) buildURL() (string, url.Values, error) {
+	// Build URL
+	path, err := uritemplates.Expand("/{index}/{type}", map[string]string{
+		"index": strings.Join(s.index, ","),
+		"type":  strings.Join(s.typ, ","),
+	})
+	if err != nil {
+		return "", url.Values{}, err
+	}
+
+	// Add query string parameters
+	params := url.Values{}
+	if s.pretty {
+		params.Set("pretty", "1")
+	}
+	if s.ignoreUnavailable != nil {
+		params.Set("ignore_unavailable", fmt.Sprintf("%v", *s.ignoreUnavailable))
+	}
+	if s.allowNoIndices != nil {
+		params.Set("allow_no_indices", fmt.Sprintf("%v", *s.allowNoIndices))
+	}
+	if s.expandWildcards != "" {
+		params.Set("expand_wildcards", s.expandWildcards)
+	}
+	if s.local != nil {
+		params.Set("local", fmt.Sprintf("%v", *s.local))
+	}
+	return path, params, nil
+}
+
+// Validate checks if the operation is valid.
+func (s *IndicesExistsTypeService) Validate() error {
+	var invalid []string
+	if len(s.index) == 0 {
+		invalid = append(invalid, "Index")
+	}
+	if len(s.typ) == 0 {
+		invalid = append(invalid, "Type")
+	}
+	if len(invalid) > 0 {
+		return fmt.Errorf("missing required fields: %v", invalid)
+	}
+	return nil
+}
+
+// Do executes the operation.
+func (s *IndicesExistsTypeService) Do() (bool, error) {
+	// Check pre-conditions
+	if err := s.Validate(); err != nil {
+		return false, err
+	}
+
+	// Get URL for request
+	path, params, err := s.buildURL()
+	if err != nil {
+		return false, err
+	}
+
+	// Get HTTP response
+	res, err := s.client.PerformRequest("HEAD", path, params, nil, 404)
+	if err != nil {
+		return false, err
+	}
+
+	// Return operation response
+	switch res.StatusCode {
+	case http.StatusOK:
+		return true, nil
+	case http.StatusNotFound:
+		return false, nil
+	default:
+		return false, fmt.Errorf("elastic: got HTTP code %d when it should have been either 200 or 404", res.StatusCode)
+	}
+}