Merge pull request #1072 from harshavardhana/query

vendor: Update minio-go library with fixes for object listing.

vendor/github.com/minio/minio-go/api-definitions.go

@@ -33,10 +33,10 @@ type ObjectInfo struct {
 	// each parts concatenated into one string.
 	ETag string `json:"etag"`
 
-	Key          string `json:"name"`            // Name of the object
+	Key          string    `json:"name"`         // Name of the object
 	LastModified time.Time `json:"lastModified"` // Date and time the object was last modified.
-	Size         int64 `json:"size"`             // Size in bytes of the object.
+	Size         int64     `json:"size"`         // Size in bytes of the object.
-	ContentType  string `json:"contentType"`     // A standard MIME type describing the format of the object data.
+	ContentType  string    `json:"contentType"`  // A standard MIME type describing the format of the object data.
 
 	// Owner name.
 	Owner struct {

vendor/github.com/minio/minio-go/api-list.go

@@ -188,11 +188,11 @@ func (c Client) listObjectsQuery(bucketName, objectPrefix, objectMarker, delimit
 	urlValues := make(url.Values)
 	// Set object prefix.
 	if objectPrefix != "" {
-		urlValues.Set("prefix", urlEncodePath(objectPrefix))
+		urlValues.Set("prefix", objectPrefix)
 	}
 	// Set object marker.
 	if objectMarker != "" {
-		urlValues.Set("marker", urlEncodePath(objectMarker))
+		urlValues.Set("marker", objectMarker)
 	}
 	// Set delimiter.
 	if delimiter != "" {
@@ -366,7 +366,7 @@ func (c Client) listMultipartUploadsQuery(bucketName, keyMarker, uploadIDMarker,
 	urlValues.Set("uploads", "")
 	// Set object key marker.
 	if keyMarker != "" {
-		urlValues.Set("key-marker", urlEncodePath(keyMarker))
+		urlValues.Set("key-marker", keyMarker)
 	}
 	// Set upload id marker.
 	if uploadIDMarker != "" {
@@ -374,7 +374,7 @@ func (c Client) listMultipartUploadsQuery(bucketName, keyMarker, uploadIDMarker,
 	}
 	// Set prefix marker.
 	if prefix != "" {
-		urlValues.Set("prefix", urlEncodePath(prefix))
+		urlValues.Set("prefix", prefix)
 	}
 	// Set delimiter.
 	if delimiter != "" {

vendor/github.com/minio/minio-go/api-put-bucket.go

@@ -91,19 +91,14 @@ func (c Client) makeBucketRequest(bucketName string, acl BucketACL, location str
 		return nil, ErrInvalidArgument("Unrecognized ACL " + acl.String())
 	}
 
-	// Set get bucket location always as path style.
+	// In case of Amazon S3.  The make bucket issued on already
+	// existing bucket would fail with 'AuthorizationMalformed' error
+	// if virtual style is used. So we default to 'path style' as that
+	// is the preferred method here. The final location of the
+	// 'bucket' is provided through XML LocationConstraint data with
+	// the request.
 	targetURL := *c.endpointURL
-	if bucketName != "" {
+	targetURL.Path = "/" + bucketName + "/"
-		// If endpoint supports virtual host style use that always.
-		// Currently only S3 and Google Cloud Storage would support this.
-		if isVirtualHostSupported(c.endpointURL, bucketName) {
-			targetURL.Host = bucketName + "." + c.endpointURL.Host
-			targetURL.Path = "/"
-		} else {
-			// If not fall back to using path style.
-			targetURL.Path = "/" + bucketName
-		}
-	}
 
 	// get a new HTTP request for the method.
 	req, err := http.NewRequest("PUT", targetURL.String(), nil)

vendor/github.com/minio/minio-go/api-put-object-common.go

@@ -94,6 +94,58 @@ func optimalPartInfo(objectSize int64) (totalPartsCount int, partSize int64, las
 	return totalPartsCount, partSize, lastPartSize, nil
 }
 
+// Compatibility code for Golang < 1.5.x.
+// copyBuffer is identical to io.CopyBuffer, since such a function is
+// not available/implemented in Golang version < 1.5.x, we use a
+// custom call exactly implementng io.CopyBuffer from Golang > 1.5.x
+// version does.
+//
+// copyBuffer stages through the provided buffer (if one is required)
+// rather than allocating a temporary one. If buf is nil, one is
+// allocated; otherwise if it has zero length, copyBuffer panics.
+//
+// FIXME: Remove this code when distributions move to newer Golang versions.
+func copyBuffer(writer io.Writer, reader io.Reader, buf []byte) (written int64, err error) {
+	// If the reader has a WriteTo method, use it to do the copy.
+	// Avoids an allocation and a copy.
+	if wt, ok := reader.(io.WriterTo); ok {
+		return wt.WriteTo(writer)
+	}
+	// Similarly, if the writer has a ReadFrom method, use it to do
+	// the copy.
+	if rt, ok := writer.(io.ReaderFrom); ok {
+		return rt.ReadFrom(reader)
+	}
+	if buf == nil {
+		buf = make([]byte, 32*1024)
+	}
+	for {
+		nr, er := reader.Read(buf)
+		if nr > 0 {
+			nw, ew := writer.Write(buf[0:nr])
+			if nw > 0 {
+				written += int64(nw)
+			}
+			if ew != nil {
+				err = ew
+				break
+			}
+			if nr != nw {
+				err = io.ErrShortWrite
+				break
+			}
+		}
+		if er == io.EOF {
+			break
+		}
+		if er != nil {
+			err = er
+			break
+		}
+	}
+	return written, err
+}
+
 // hashCopyBuffer is identical to hashCopyN except that it stages
 // through the provided buffer (if one is required) rather than
 // allocating a temporary one. If buf is nil, one is allocated for 5MiB.
@@ -113,9 +165,9 @@ func (c Client) hashCopyBuffer(writer io.Writer, reader io.Reader, buf []byte) (
 		buf = make([]byte, optimalReadBufferSize)
 	}
 
-	// Using io.CopyBuffer to copy in large buffers, default buffer
+	// Using copyBuffer to copy in large buffers, default buffer
 	// for io.Copy of 32KiB is too small.
-	size, err = io.CopyBuffer(hashWriter, reader, buf)
+	size, err = copyBuffer(hashWriter, reader, buf)
 	if err != nil {
 		return nil, nil, 0, err
 	}
@@ -215,7 +267,7 @@ func (c Client) computeHashBuffer(reader io.ReadSeeker, buf []byte) (md5Sum, sha
 			return nil, nil, 0, err
 		}
 	} else {
-		size, err = io.CopyBuffer(hashWriter, reader, buf)
+		size, err = copyBuffer(hashWriter, reader, buf)
 		if err != nil {
 			return nil, nil, 0, err
 		}

vendor/github.com/minio/minio-go/api-put-object-file.go

@@ -88,7 +88,7 @@ func (c Client) FPutObject(bucketName, objectName, filePath, contentType string)
 	}
 
 	// Small object upload is initiated for uploads for input data size smaller than 5MiB.
-	if fileSize < minPartSize {
+	if fileSize < minPartSize && fileSize >= 0 {
 		return c.putObjectSingle(bucketName, objectName, fileReader, fileSize, contentType, nil)
 	}
 	// Upload all large objects as multipart.

vendor/github.com/minio/minio-go/api-put-object-progress.go

@@ -82,7 +82,7 @@ func (c Client) PutObjectWithProgress(bucketName, objectName string, reader io.R
 	}
 
 	// putSmall object.
-	if size < minPartSize && size > 0 {
+	if size < minPartSize && size >= 0 {
 		return c.putObjectSingle(bucketName, objectName, reader, size, contentType, progress)
 	}
 	// For all sizes greater than 5MiB do multipart.

vendor/github.com/minio/minio-go/api.go

@@ -181,7 +181,7 @@ func (c *Client) SetCustomTransport(customHTTPTransport http.RoundTripper) {
 }
 
 // TraceOn - enable HTTP tracing.
-func (c *Client) TraceOn(outputStream io.Writer) error {
+func (c *Client) TraceOn(outputStream io.Writer) {
 	// if outputStream is nil then default to os.Stdout.
 	if outputStream == nil {
 		outputStream = os.Stdout
@@ -191,7 +191,6 @@ func (c *Client) TraceOn(outputStream io.Writer) error {
 
 	// Enable tracing.
 	c.isTraceEnabled = true
-	return nil
 }
 
 // TraceOff - disable HTTP tracing.
@@ -471,15 +470,15 @@ func (c Client) makeTargetURL(bucketName, objectName, bucketLocation string, que
 			}
 		} else {
 			// If not fall back to using path style.
-			urlStr = urlStr + bucketName
+			urlStr = urlStr + bucketName + "/"
 			if objectName != "" {
-				urlStr = urlStr + "/" + urlEncodePath(objectName)
+				urlStr = urlStr + urlEncodePath(objectName)
 			}
 		}
 	}
 	// If there are any query values, add them to the end.
 	if len(queryValues) > 0 {
-		urlStr = urlStr + "?" + queryValues.Encode()
+		urlStr = urlStr + "?" + queryEncode(queryValues)
 	}
 	u, err := url.Parse(urlStr)
 	if err != nil {
@@ -528,6 +527,6 @@ type CloudStorageClient interface {
 	SetCustomTransport(customTransport http.RoundTripper)
 
 	// HTTP tracing methods.
-	TraceOn(traceOutput io.Writer) error
+	TraceOn(traceOutput io.Writer)
 	TraceOff()
 }

vendor/github.com/minio/minio-go/api_functional_v2_test.go

@@ -31,6 +31,53 @@ import (
 	"github.com/minio/minio-go"
 )
 
+// Tests bucket re-create errors.
+func TestMakeBucketErrorV2(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping functional tests for short runs")
+	}
+
+	// Seed random based on current time.
+	rand.Seed(time.Now().Unix())
+
+	// Instantiate new minio client object.
+	c, err := minio.NewV2(
+		"s3.amazonaws.com",
+		os.Getenv("ACCESS_KEY"),
+		os.Getenv("SECRET_KEY"),
+		false,
+	)
+	if err != nil {
+		t.Fatal("Error:", err)
+	}
+
+	// Enable tracing, write to stderr.
+	// c.TraceOn(os.Stderr)
+
+	// Set user agent.
+	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
+
+	// Generate a new random bucket name.
+	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
+
+	// Make a new bucket in 'eu-west-1'.
+	if err = c.MakeBucket(bucketName, "private", "eu-west-1"); err != nil {
+		t.Fatal("Error:", err, bucketName)
+	}
+	if err = c.MakeBucket(bucketName, "private", "eu-west-1"); err == nil {
+		t.Fatal("Error: make bucket should should fail for", bucketName)
+	}
+	// Verify valid error response from server.
+	if minio.ToErrorResponse(err).Code != "BucketAlreadyExists" &&
+		minio.ToErrorResponse(err).Code != "BucketAlreadyOwnedByYou" {
+		t.Fatal("Error: Invalid error returned by server", err)
+	}
+	if err = c.RemoveBucket(bucketName); err != nil {
+		t.Fatal("Error:", err, bucketName)
+	}
+}
+
+// Test get object reader to not throw error on being closed twice.
 func TestGetObjectClosedTwiceV2(t *testing.T) {
 	if testing.Short() {
 		t.Skip("skipping functional tests for short runs")
@@ -39,8 +86,8 @@ func TestGetObjectClosedTwiceV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
-	c, err := minio.New(
+	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
 		os.Getenv("SECRET_KEY"),
@@ -124,7 +171,7 @@ func TestRemovePartiallyUploadedV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -191,8 +238,8 @@ func TestResumbalePutObjectV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
-	c, err := minio.New(
+	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
 		os.Getenv("SECRET_KEY"),
@@ -302,8 +349,8 @@ func TestResumableFPutObjectV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
-	c, err := minio.New(
+	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
 		os.Getenv("SECRET_KEY"),
@@ -370,6 +417,57 @@ func TestResumableFPutObjectV2(t *testing.T) {
 	}
 }
 
+// Tests various bucket supported formats.
+func TestMakeBucketRegionsV2(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping functional tests for short runs")
+	}
+
+	// Seed random based on current time.
+	rand.Seed(time.Now().Unix())
+
+	// Instantiate new minio client object.
+	c, err := minio.NewV2(
+		"s3.amazonaws.com",
+		os.Getenv("ACCESS_KEY"),
+		os.Getenv("SECRET_KEY"),
+		false,
+	)
+	if err != nil {
+		t.Fatal("Error:", err)
+	}
+
+	// Enable tracing, write to stderr.
+	// c.TraceOn(os.Stderr)
+
+	// Set user agent.
+	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
+
+	// Generate a new random bucket name.
+	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
+
+	// Make a new bucket in 'eu-central-1'.
+	if err = c.MakeBucket(bucketName, "private", "eu-west-1"); err != nil {
+		t.Fatal("Error:", err, bucketName)
+	}
+
+	if err = c.RemoveBucket(bucketName); err != nil {
+		t.Fatal("Error:", err, bucketName)
+	}
+
+	// Make a new bucket with '.' in its name, in 'us-west-2'. This
+	// request is internally staged into a path style instead of
+	// virtual host style.
+	if err = c.MakeBucket(bucketName+".withperiod", "private", "us-west-2"); err != nil {
+		t.Fatal("Error:", err, bucketName+".withperiod")
+	}
+
+	// Remove the newly created bucket.
+	if err = c.RemoveBucket(bucketName + ".withperiod"); err != nil {
+		t.Fatal("Error:", err, bucketName+".withperiod")
+	}
+}
+
 // Tests resumable put object multipart upload.
 func TestResumablePutObjectV2(t *testing.T) {
 	if testing.Short() {
@@ -379,8 +477,8 @@ func TestResumablePutObjectV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
-	c, err := minio.New(
+	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
 		os.Getenv("SECRET_KEY"),
@@ -443,8 +541,8 @@ func TestGetObjectReadSeekFunctionalV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
-	c, err := minio.New(
+	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
 		os.Getenv("SECRET_KEY"),
@@ -557,8 +655,8 @@ func TestGetObjectReadAtFunctionalV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
-	c, err := minio.New(
+	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
 		os.Getenv("SECRET_KEY"),
@@ -699,7 +797,7 @@ func TestFunctionalV2(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	c, err := minio.New(
+	c, err := minio.NewV2(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
 		os.Getenv("SECRET_KEY"),

vendor/github.com/minio/minio-go/api_functional_v4_test.go

@@ -55,6 +55,52 @@ func randString(n int, src rand.Source) string {
 	return string(b[0:30])
 }
 
+// Tests bucket re-create errors.
+func TestMakeBucketError(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping functional tests for short runs")
+	}
+
+	// Seed random based on current time.
+	rand.Seed(time.Now().Unix())
+
+	// Instantiate new minio client object.
+	c, err := minio.New(
+		"s3.amazonaws.com",
+		os.Getenv("ACCESS_KEY"),
+		os.Getenv("SECRET_KEY"),
+		false,
+	)
+	if err != nil {
+		t.Fatal("Error:", err)
+	}
+
+	// Enable tracing, write to stderr.
+	// c.TraceOn(os.Stderr)
+
+	// Set user agent.
+	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
+
+	// Generate a new random bucket name.
+	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
+
+	// Make a new bucket in 'eu-central-1'.
+	if err = c.MakeBucket(bucketName, "private", "eu-central-1"); err != nil {
+		t.Fatal("Error:", err, bucketName)
+	}
+	if err = c.MakeBucket(bucketName, "private", "eu-central-1"); err == nil {
+		t.Fatal("Error: make bucket should should fail for", bucketName)
+	}
+	// Verify valid error response from server.
+	if minio.ToErrorResponse(err).Code != "BucketAlreadyExists" &&
+		minio.ToErrorResponse(err).Code != "BucketAlreadyOwnedByYou" {
+		t.Fatal("Error: Invalid error returned by server", err)
+	}
+	if err = c.RemoveBucket(bucketName); err != nil {
+		t.Fatal("Error:", err, bucketName)
+	}
+}
+
 // Tests various bucket supported formats.
 func TestMakeBucketRegions(t *testing.T) {
 	if testing.Short() {
@@ -64,7 +110,7 @@ func TestMakeBucketRegions(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -115,7 +161,7 @@ func TestGetObjectClosedTwice(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -200,7 +246,7 @@ func TestRemovePartiallyUploaded(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -236,7 +282,7 @@ func TestRemovePartiallyUploaded(t *testing.T) {
 			}
 			i++
 		}
-		err = writer.CloseWithError(errors.New("Proactively closed to be verified later."))
+		err := writer.CloseWithError(errors.New("Proactively closed to be verified later."))
 		if err != nil {
 			t.Fatal("Error:", err)
 		}
@@ -270,7 +316,7 @@ func TestResumbalePutObject(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -380,7 +426,7 @@ func TestResumableFPutObject(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -460,7 +506,7 @@ func TestResumablePutObject(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -524,7 +570,7 @@ func TestGetObjectReadSeekFunctional(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),
@@ -638,7 +684,7 @@ func TestGetObjectReadAtFunctional(t *testing.T) {
 	// Seed random based on current time.
 	rand.Seed(time.Now().Unix())
 
-	// Connect and make sure bucket exists.
+	// Instantiate new minio client object.
 	c, err := minio.New(
 		"s3.amazonaws.com",
 		os.Getenv("ACCESS_KEY"),

vendor/github.com/minio/minio-go/api_unit_test.go

@@ -397,6 +397,22 @@ func TestPartSize(t *testing.T) {
 	}
 }
 
+// Tests query values to URL encoding.
+func TestQueryURLEncoding(t *testing.T) {
+	urlValues := make(url.Values)
+	urlValues.Set("prefix", "test@1123")
+	urlValues.Set("delimiter", "/")
+	urlValues.Set("marker", "%%%@$$$")
+
+	queryStr := queryEncode(urlValues)
+	if !strings.Contains(queryStr, "test%401123") {
+		t.Fatalf("Error: @ should be encoded as %s, invalid query string %s", "test%401123", queryStr)
+	}
+	if !strings.Contains(queryStr, "%25%25%25%40%24%24%24") {
+		t.Fatalf("Error: %s should be encoded as %s, invalid query string %s", "%%%@$$$", "%25%25%25%40%24%24%24", queryStr)
+	}
+}
+
 // Tests url encoding.
 func TestURLEncoding(t *testing.T) {
 	type urlStrings struct {

vendor/github.com/minio/minio-go/bucket-cache.go

@@ -127,7 +127,7 @@ func (c Client) getBucketLocationRequest(bucketName string) (*http.Request, erro
 
 	// Set get bucket location always as path style.
 	targetURL := c.endpointURL
-	targetURL.Path = filepath.Join(bucketName, "")
+	targetURL.Path = filepath.Join(bucketName, "") + "/"
 	targetURL.RawQuery = urlValues.Encode()
 
 	// Get a new HTTP request for the method.

vendor/github.com/minio/minio-go/request-signature-v2.go

@@ -24,6 +24,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+	"path/filepath"
 	"sort"
 	"strconv"
 	"strings"
@@ -38,8 +39,11 @@ const (
 // Encode input URL path to URL encoded path.
 func encodeURL2Path(u *url.URL) (path string) {
 	// Encode URL path.
-	if strings.HasSuffix(u.Host, ".s3.amazonaws.com") {
+	if isS3, _ := filepath.Match("*.s3*.amazonaws.com", u.Host); isS3 {
-		path = "/" + strings.TrimSuffix(u.Host, ".s3.amazonaws.com")
+		hostSplits := strings.SplitN(u.Host, ".", 4)
+		// First element is the bucket name.
+		bucketName := hostSplits[0]
+		path = "/" + bucketName
 		path += u.Path
 		path = urlEncodePath(path)
 		return
@@ -251,10 +255,9 @@ var resourceList = []string{
 // CanonicalizedResource = [ "/" + Bucket ] +
 // 	  <HTTP-Request-URI, from the protocol name up to the query string> +
 // 	  [ sub-resource, if present. For example "?acl", "?location", "?logging", or "?torrent"];
-func writeCanonicalizedResource(buf *bytes.Buffer, req http.Request) error {
+func writeCanonicalizedResource(buf *bytes.Buffer, req http.Request) {
 	// Save request URL.
 	requestURL := req.URL
-
 	// Get encoded URL path.
 	path := encodeURL2Path(requestURL)
 	buf.WriteString(path)
@@ -285,5 +288,4 @@ func writeCanonicalizedResource(buf *bytes.Buffer, req http.Request) error {
 			}
 		}
 	}
-	return nil
 }

vendor/github.com/minio/minio-go/utils.go

@@ -17,6 +17,7 @@
 package minio
 
 import (
+	"bytes"
 	"crypto/hmac"
 	"crypto/sha256"
 	"encoding/hex"
@@ -27,6 +28,7 @@ import (
 	"net/http"
 	"net/url"
 	"regexp"
+	"sort"
 	"strings"
 	"time"
 	"unicode/utf8"
@@ -183,7 +185,7 @@ func isValidEndpointURL(endpointURL *url.URL) error {
 		return ErrInvalidArgument("Endpoint url cannot be empty.")
 	}
 	if endpointURL.Path != "/" && endpointURL.Path != "" {
-		return ErrInvalidArgument("Endpoing url cannot have fully qualified paths.")
+		return ErrInvalidArgument("Endpoint url cannot have fully qualified paths.")
 	}
 	if strings.Contains(endpointURL.Host, ".amazonaws.com") {
 		if !isAmazonEndpoint(endpointURL) {
@@ -264,6 +266,31 @@ func isValidObjectPrefix(objectPrefix string) error {
 	return nil
 }
 
+// queryEncode - encodes query values in their URL encoded form.
+func queryEncode(v url.Values) string {
+	if v == nil {
+		return ""
+	}
+	var buf bytes.Buffer
+	keys := make([]string, 0, len(v))
+	for k := range v {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	for _, k := range keys {
+		vs := v[k]
+		prefix := urlEncodePath(k) + "="
+		for _, v := range vs {
+			if buf.Len() > 0 {
+				buf.WriteByte('&')
+			}
+			buf.WriteString(prefix)
+			buf.WriteString(urlEncodePath(v))
+		}
+	}
+	return buf.String()
+}
+
 // urlEncodePath encode the strings from UTF-8 byte representations to HTML hex escape sequences
 //
 // This is necessary since regular url.Parse() and url.Encode() functions do not support UTF-8

vendor/vendor.json

@@ -54,8 +54,8 @@
 		},
 		{
 			"path": "github.com/minio/minio-go",
-			"revision": "412df729f2c19ce60895770403f266cf5eac56f7",
+			"revision": "c5884ce9ce3ac73b025d0bc58c4d3d72870edc0b",
-			"revisionTime": "2016-01-22T16:23:42-08:00"
+			"revisionTime": "2016-02-02T13:13:10+05:30"
 		},
 		{
 			"path": "github.com/minio/minio-xl/pkg/atomic",