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277 lines
9.2 KiB
277 lines
9.2 KiB
/*
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* Minimalist Object Storage, (C) 2015 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package api
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import (
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"net/http"
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"github.com/gorilla/mux"
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"github.com/minio-io/minio/pkg/drivers"
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"github.com/minio-io/minio/pkg/utils/log"
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)
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// GET Object
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// ----------
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// This implementation of the GET operation retrieves object. To use GET,
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// you must have READ access to the object.
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func (server *minioAPI) getObjectHandler(w http.ResponseWriter, req *http.Request) {
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var object, bucket string
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acceptsContentType := getContentType(req)
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vars := mux.Vars(req)
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bucket = vars["bucket"]
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object = vars["object"]
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metadata, err := server.driver.GetObjectMetadata(bucket, object, "")
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switch err := err.(type) {
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case nil: // success
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{
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httpRange, err := getRequestedRange(req, metadata.Size)
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if err != nil {
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log.Error.Println(err)
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error := getErrorCode(InvalidRange)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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return
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}
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switch httpRange.start == 0 && httpRange.length == 0 {
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case true:
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setObjectHeaders(w, metadata)
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if _, err := server.driver.GetObject(w, bucket, object); err != nil {
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log.Error.Println(err)
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// unable to write headers, we've already printed data. Just close the connection.
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return
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}
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case false:
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metadata.Size = httpRange.length
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setRangeObjectHeaders(w, metadata, httpRange)
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w.WriteHeader(http.StatusPartialContent)
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_, err := server.driver.GetPartialObject(w, bucket, object, httpRange.start, httpRange.length)
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if err != nil {
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log.Error.Println(err)
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// unable to write headers, we've already printed data. Just close the connection.
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return
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}
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}
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}
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case drivers.ObjectNotFound:
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{
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error := getErrorCode(NoSuchKey)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.BucketNotFound:
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{
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error := getErrorCode(NoSuchBucket)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.ObjectNameInvalid:
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{
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error := getErrorCode(NoSuchKey)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.BucketNameInvalid:
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{
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error := getErrorCode(InvalidBucketName)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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default:
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{
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// Embed errors log on serve side
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log.Error.Println(err)
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error := getErrorCode(InternalError)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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}
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}
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// HEAD Object
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// -----------
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// The HEAD operation retrieves metadata from an object without returning the object itself.
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func (server *minioAPI) headObjectHandler(w http.ResponseWriter, req *http.Request) {
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var object, bucket string
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acceptsContentType := getContentType(req)
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vars := mux.Vars(req)
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bucket = vars["bucket"]
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object = vars["object"]
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metadata, err := server.driver.GetObjectMetadata(bucket, object, "")
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switch err := err.(type) {
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case nil:
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setObjectHeaders(w, metadata)
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case drivers.ObjectNotFound:
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{
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// get error
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error := getErrorCode(NoSuchKey)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.ObjectNameInvalid:
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{
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// get error
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error := getErrorCode(NoSuchKey)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.ImplementationError:
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{
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// Embed error log on server side
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log.Error.Println(err)
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// get error
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error := getErrorCode(InternalError)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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}
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}
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// PUT Object
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// ----------
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// This implementation of the PUT operation adds an object to a bucket.
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func (server *minioAPI) putObjectHandler(w http.ResponseWriter, req *http.Request) {
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var object, bucket string
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vars := mux.Vars(req)
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acceptsContentType := getContentType(req)
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bucket = vars["bucket"]
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object = vars["object"]
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resources := getBucketResources(req.URL.Query())
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if resources.Policy == true && object == "" {
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server.putBucketPolicyHandler(w, req)
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return
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}
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// get Content-MD5 sent by client
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md5 := req.Header.Get("Content-MD5")
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err := server.driver.CreateObject(bucket, object, "", md5, req.Body)
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switch err := err.(type) {
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case nil:
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w.Header().Set("Server", "Minio")
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w.Header().Set("Connection", "close")
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case drivers.ImplementationError:
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{
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// Embed error log on server side
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log.Error.Println(err)
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// get error
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error := getErrorCode(InternalError)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.BucketNotFound:
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{
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// get error
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error := getErrorCode(NoSuchBucket)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.BucketNameInvalid:
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{
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// get error
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error := getErrorCode(InvalidBucketName)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.ObjectExists:
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{
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// get error
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error := getErrorCode(NotImplemented)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.BadDigest:
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{
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// get error
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error := getErrorCode(BadDigest)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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case drivers.InvalidDigest:
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{
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// get error
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error := getErrorCode(InvalidDigest)
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errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
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// set headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType))
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w.WriteHeader(error.HTTPStatusCode)
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// write body
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encodedErrorResponse := encodeErrorResponse(errorResponse, acceptsContentType)
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w.Write(encodedErrorResponse)
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}
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}
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}
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