Add everything back into one project hood, still missing iodine

pkg/storage/donut/objectstorage.go

@@ -0,0 +1,203 @@
+/*
+ * Minimalist Object Storage, (C) 2015 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 donut
+
+import (
+	"errors"
+	"io"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/minio-io/iodine"
+)
+
+// MakeBucket - make a new bucket
+func (d donut) MakeBucket(bucket string) error {
+	if bucket == "" || strings.TrimSpace(bucket) == "" {
+		return iodine.New(errors.New("invalid argument"), nil)
+	}
+	return d.makeDonutBucket(bucket)
+}
+
+// GetBucketMetadata - get bucket metadata
+func (d donut) GetBucketMetadata(bucket string) (map[string]string, error) {
+	err := d.getDonutBuckets()
+	if err != nil {
+		return nil, iodine.New(err, nil)
+	}
+	if _, ok := d.buckets[bucket]; !ok {
+		return nil, iodine.New(errors.New("bucket does not exist"), nil)
+	}
+	metadata := make(map[string]string)
+	metadata["name"] = bucket
+	metadata["created"] = time.Now().Format(time.RFC3339Nano) // TODO get this, from whatever is written from SetBucketMetadata
+	return metadata, nil
+}
+
+// SetBucketMetadata - set bucket metadata
+func (d donut) SetBucketMetadata(bucket string, metadata map[string]string) error {
+	return errors.New("Not implemented")
+}
+
+// ListBuckets - return list of buckets
+func (d donut) ListBuckets() (results []string, err error) {
+	err = d.getDonutBuckets()
+	if err != nil {
+		return nil, iodine.New(err, nil)
+	}
+	for name := range d.buckets {
+		results = append(results, name)
+	}
+	sort.Strings(results)
+	return results, nil
+}
+
+// ListObjects - return list of objects
+func (d donut) ListObjects(bucket, prefix, marker, delimiter string, maxkeys int) ([]string, []string, bool, error) {
+	// TODO: Marker is not yet handled please handle it
+	errParams := map[string]string{
+		"bucket":    bucket,
+		"prefix":    prefix,
+		"marker":    marker,
+		"delimiter": delimiter,
+		"maxkeys":   strconv.Itoa(maxkeys),
+	}
+	err := d.getDonutBuckets()
+	if err != nil {
+		return nil, nil, false, iodine.New(err, errParams)
+	}
+	if _, ok := d.buckets[bucket]; !ok {
+		return nil, nil, false, iodine.New(errors.New("bucket does not exist"), errParams)
+	}
+	objectList, err := d.buckets[bucket].ListObjects()
+	if err != nil {
+		return nil, nil, false, iodine.New(err, errParams)
+	}
+	var donutObjects []string
+	for objectName := range objectList {
+		donutObjects = append(donutObjects, objectName)
+	}
+	if maxkeys <= 0 {
+		maxkeys = 1000
+	}
+	if strings.TrimSpace(prefix) != "" {
+		donutObjects = filterPrefix(donutObjects, prefix)
+		donutObjects = removePrefix(donutObjects, prefix)
+	}
+
+	var actualObjects []string
+	var actualPrefixes []string
+	var isTruncated bool
+	if strings.TrimSpace(delimiter) != "" {
+		actualObjects = filterDelimited(donutObjects, delimiter)
+		actualPrefixes = filterNotDelimited(donutObjects, delimiter)
+		actualPrefixes = extractDir(actualPrefixes, delimiter)
+		actualPrefixes = uniqueObjects(actualPrefixes)
+	} else {
+		actualObjects = donutObjects
+	}
+
+	var results []string
+	var commonPrefixes []string
+	for _, objectName := range actualObjects {
+		if len(results) >= maxkeys {
+			isTruncated = true
+			break
+		}
+		results = appendUniq(results, prefix+objectName)
+	}
+	for _, commonPrefix := range actualPrefixes {
+		commonPrefixes = appendUniq(commonPrefixes, prefix+commonPrefix)
+	}
+	sort.Strings(results)
+	sort.Strings(commonPrefixes)
+	return results, commonPrefixes, isTruncated, nil
+}
+
+// PutObject - put object
+func (d donut) PutObject(bucket, object, expectedMD5Sum string, reader io.ReadCloser, metadata map[string]string) error {
+	errParams := map[string]string{
+		"bucket": bucket,
+		"object": object,
+	}
+	if bucket == "" || strings.TrimSpace(bucket) == "" {
+		return iodine.New(errors.New("invalid argument"), errParams)
+	}
+	if object == "" || strings.TrimSpace(object) == "" {
+		return iodine.New(errors.New("invalid argument"), errParams)
+	}
+	err := d.getDonutBuckets()
+	if err != nil {
+		return iodine.New(err, errParams)
+	}
+	if _, ok := d.buckets[bucket]; !ok {
+		return iodine.New(errors.New("bucket does not exist"), nil)
+	}
+	err = d.buckets[bucket].PutObject(object, reader, expectedMD5Sum, metadata)
+	if err != nil {
+		return iodine.New(err, errParams)
+	}
+	return nil
+}
+
+// GetObject - get object
+func (d donut) GetObject(bucket, object string) (reader io.ReadCloser, size int64, err error) {
+	errParams := map[string]string{
+		"bucket": bucket,
+		"object": object,
+	}
+	if bucket == "" || strings.TrimSpace(bucket) == "" {
+		return nil, 0, iodine.New(errors.New("invalid argument"), errParams)
+	}
+	if object == "" || strings.TrimSpace(object) == "" {
+		return nil, 0, iodine.New(errors.New("invalid argument"), errParams)
+	}
+	err = d.getDonutBuckets()
+	if err != nil {
+		return nil, 0, iodine.New(err, nil)
+	}
+	if _, ok := d.buckets[bucket]; !ok {
+		return nil, 0, iodine.New(errors.New("bucket does not exist"), errParams)
+	}
+	return d.buckets[bucket].GetObject(object)
+}
+
+// GetObjectMetadata - get object metadata
+func (d donut) GetObjectMetadata(bucket, object string) (map[string]string, error) {
+	errParams := map[string]string{
+		"bucket": bucket,
+		"object": object,
+	}
+	err := d.getDonutBuckets()
+	if err != nil {
+		return nil, iodine.New(err, errParams)
+	}
+	if _, ok := d.buckets[bucket]; !ok {
+		return nil, iodine.New(errors.New("bucket does not exist"), errParams)
+	}
+	objectList, err := d.buckets[bucket].ListObjects()
+	if err != nil {
+		return nil, iodine.New(err, errParams)
+	}
+	donutObject, ok := objectList[object]
+	if !ok {
+		return nil, iodine.New(errors.New("object does not exist"), errParams)
+	}
+	return donutObject.GetObjectMetadata()
+}