Add everything back into one project hood, still missing iodine

pkg/storage/donut/donut_object.go

@@ -0,0 +1,70 @@
+/*
+ * 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"
+	"path"
+
+	"encoding/json"
+	"io/ioutil"
+)
+
+// object internal struct
+type object struct {
+	name                string
+	objectPath          string
+	objectMetadata      map[string]string
+	donutObjectMetadata map[string]string
+}
+
+// NewObject - instantiate a new object
+func NewObject(objectName, p string) (Object, error) {
+	if objectName == "" {
+		return nil, errors.New("invalid argument")
+	}
+	o := object{}
+	o.name = objectName
+	o.objectPath = path.Join(p, objectName)
+	return o, nil
+}
+
+func (o object) GetObjectMetadata() (map[string]string, error) {
+	objectMetadata := make(map[string]string)
+	objectMetadataBytes, err := ioutil.ReadFile(path.Join(o.objectPath, objectMetadataConfig))
+	if err != nil {
+		return nil, err
+	}
+	if err := json.Unmarshal(objectMetadataBytes, &objectMetadata); err != nil {
+		return nil, err
+	}
+	o.objectMetadata = objectMetadata
+	return o.objectMetadata, nil
+}
+
+func (o object) GetDonutObjectMetadata() (map[string]string, error) {
+	donutObjectMetadata := make(map[string]string)
+	donutObjectMetadataBytes, err := ioutil.ReadFile(path.Join(o.objectPath, donutObjectMetadataConfig))
+	if err != nil {
+		return nil, err
+	}
+	if err := json.Unmarshal(donutObjectMetadataBytes, &donutObjectMetadata); err != nil {
+		return nil, err
+	}
+	o.donutObjectMetadata = donutObjectMetadata
+	return o.donutObjectMetadata, nil
+}