Add everything back into one project hood, still missing iodine

pkg/storage/donut/donut_public_interfaces.go

@@ -0,0 +1,57 @@
+/*
+ * 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 "io"
+
+// Collection of Donut specification interfaces
+
+// Donut is a collection of object storage and management interface
+type Donut interface {
+	ObjectStorage
+	Management
+}
+
+// ObjectStorage is a donut object storage interface
+type ObjectStorage interface {
+	// Storage service Operations
+	GetBucketMetadata(bucket string) (map[string]string, error)
+	SetBucketMetadata(bucket string, metadata map[string]string) error
+	ListBuckets() ([]string, error)
+	MakeBucket(bucket string) error
+
+	// Bucket Operations
+	ListObjects(bucket, prefix, marker, delim string, maxKeys int) (result []string, prefixes []string, isTruncated bool, err error)
+
+	// Object Operations
+	GetObject(bucket, object string) (io.ReadCloser, int64, error)
+	GetObjectMetadata(bucket, object string) (map[string]string, error)
+	PutObject(bucket, object, expectedMD5Sum string, reader io.ReadCloser, metadata map[string]string) error
+}
+
+// Management is a donut management system interface
+type Management interface {
+	Heal() error
+	Rebalance() error
+	Info() (map[string][]string, error)
+
+	AttachNode(node Node) error
+	DetachNode(node Node) error
+
+	SaveConfig() error
+	LoadConfig() error
+}