Restructure API handlers, add JSON RPC simple HelloService right now.

pkg/server/api/acl.go

@@ -0,0 +1,79 @@
+/*
+ * 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 api
+
+import "net/http"
+
+// Please read for more information - http://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl
+//
+// Here We are only supporting 'acl's through request headers not through their request body
+// http://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#setting-acls
+
+// Minio only supports three types for now i.e 'private, public-read, public-read-write'
+
+// ACLType - different acl types
+type ACLType int
+
+const (
+	unsupportedACLType ACLType = iota
+	privateACLType
+	publicReadACLType
+	publicReadWriteACLType
+)
+
+// Get acl type requested from 'x-amz-acl' header
+func getACLType(req *http.Request) ACLType {
+	aclHeader := req.Header.Get("x-amz-acl")
+	if aclHeader != "" {
+		switch {
+		case aclHeader == "private":
+			return privateACLType
+		case aclHeader == "public-read":
+			return publicReadACLType
+		case aclHeader == "public-read-write":
+			return publicReadWriteACLType
+		default:
+			return unsupportedACLType
+		}
+	}
+	// make it default private
+	return privateACLType
+}
+
+// ACL type to human readable string
+func getACLTypeString(acl ACLType) string {
+	switch acl {
+	case privateACLType:
+		{
+			return "private"
+		}
+	case publicReadACLType:
+		{
+			return "public-read"
+		}
+	case publicReadWriteACLType:
+		{
+			return "public-read-write"
+		}
+	case unsupportedACLType:
+		{
+			return ""
+		}
+	default:
+		return "private"
+	}
+}