Refactor to move config handling into api/

pkg/api/api_object_handlers.go

@@ -0,0 +1,221 @@
+/*
+ * Mini 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 (
+	"log"
+	"net/http"
+
+	"github.com/gorilla/mux"
+	mstorage "github.com/minio-io/minio/pkg/storage"
+)
+
+// GET Object
+// ----------
+// This implementation of the GET operation retrieves object. To use GET,
+// you must have READ access to the object.
+func (server *minioAPI) getObjectHandler(w http.ResponseWriter, req *http.Request) {
+	var object, bucket string
+	acceptsContentType := getContentType(req)
+	vars := mux.Vars(req)
+	bucket = vars["bucket"]
+	object = vars["object"]
+
+	metadata, err := server.storage.GetObjectMetadata(bucket, object, "")
+	switch err := err.(type) {
+	case nil: // success
+		{
+			log.Println("Found: " + bucket + "#" + object)
+			httpRange, err := newRange(req, metadata.Size)
+			if err != nil {
+				log.Println(err)
+				error := errorCodeError(InvalidRange)
+				errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+				w.WriteHeader(error.HTTPStatusCode)
+				w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+				return
+			}
+			switch httpRange.start == 0 && httpRange.length == 0 {
+			case true:
+				writeObjectHeaders(w, metadata)
+				if _, err := server.storage.GetObject(w, bucket, object); err != nil {
+					log.Println(err)
+					error := errorCodeError(InternalError)
+					errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+					w.WriteHeader(error.HTTPStatusCode)
+					w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+					return
+				}
+			case false:
+				metadata.Size = httpRange.length
+				writeRangeObjectHeaders(w, metadata, httpRange.getContentRange())
+				w.WriteHeader(http.StatusPartialContent)
+				_, err := server.storage.GetPartialObject(w, bucket, object, httpRange.start, httpRange.length)
+				if err != nil {
+					log.Println(err)
+					error := errorCodeError(InternalError)
+					errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+					w.WriteHeader(error.HTTPStatusCode)
+					w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+					return
+				}
+
+			}
+		}
+	case mstorage.ObjectNotFound:
+		{
+			error := errorCodeError(NoSuchKey)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.ObjectNameInvalid:
+		{
+			error := errorCodeError(NoSuchKey)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.BucketNameInvalid:
+		{
+			error := errorCodeError(InvalidBucketName)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.ImplementationError:
+		{
+			// Embed errors log on serve side
+			log.Println(err)
+			error := errorCodeError(InternalError)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	}
+}
+
+// HEAD Object
+// -----------
+// The HEAD operation retrieves metadata from an object without returning the object itself.
+func (server *minioAPI) headObjectHandler(w http.ResponseWriter, req *http.Request) {
+	var object, bucket string
+	acceptsContentType := getContentType(req)
+	vars := mux.Vars(req)
+	bucket = vars["bucket"]
+	object = vars["object"]
+
+	metadata, err := server.storage.GetObjectMetadata(bucket, object, "")
+	switch err := err.(type) {
+	case nil:
+		writeObjectHeaders(w, metadata)
+	case mstorage.ObjectNotFound:
+		{
+			error := errorCodeError(NoSuchKey)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.ObjectNameInvalid:
+		{
+			error := errorCodeError(NoSuchKey)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.ImplementationError:
+		{
+			// Embed error log on server side
+			log.Println(err)
+			error := errorCodeError(InternalError)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	}
+}
+
+// PUT Object
+// ----------
+// This implementation of the PUT operation adds an object to a bucket.
+func (server *minioAPI) putObjectHandler(w http.ResponseWriter, req *http.Request) {
+	var object, bucket string
+	vars := mux.Vars(req)
+	acceptsContentType := getContentType(req)
+	bucket = vars["bucket"]
+	object = vars["object"]
+
+	resources := getBucketResources(req.URL.Query())
+	if resources.Policy == true && object == "" {
+		server.putBucketPolicyHandler(w, req)
+		return
+	}
+
+	// get Content-MD5 sent by client
+	md5 := req.Header.Get("Content-MD5")
+	err := server.storage.CreateObject(bucket, object, "", md5, req.Body)
+	switch err := err.(type) {
+	case nil:
+		w.Header().Set("Server", "Minio")
+		w.Header().Set("Connection", "close")
+	case mstorage.ImplementationError:
+		{
+			// Embed error log on server side
+			log.Println(err)
+			error := errorCodeError(InternalError)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.BucketNotFound:
+		{
+			error := errorCodeError(NoSuchBucket)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.BucketNameInvalid:
+		{
+			error := errorCodeError(InvalidBucketName)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.ObjectExists:
+		{
+			error := errorCodeError(NotImplemented)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.BadDigest:
+		{
+			error := errorCodeError(BadDigest)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	case mstorage.InvalidDigest:
+		{
+			error := errorCodeError(InvalidDigest)
+			errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
+			w.WriteHeader(error.HTTPStatusCode)
+			w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
+		}
+	}
+
+}