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479 lines
14 KiB
479 lines
14 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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"sort"
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"strconv"
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"encoding/xml"
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"github.com/gorilla/mux"
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"github.com/minio/minio/pkg/iodine"
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"github.com/minio/minio/pkg/storage/drivers"
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"github.com/minio/minio/pkg/utils/log"
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)
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const (
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maxPartsList = 1000
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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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acceptsContentType := getContentType(req)
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// verify if this operation is allowed
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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var object, bucket string
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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 iodine.ToError(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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writeErrorResponse(w, req, InvalidRange, acceptsContentType, req.URL.Path)
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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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// unable to write headers, we've already printed data. Just close the connection.
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log.Error.Println(iodine.New(err, nil))
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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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if _, err := server.driver.GetPartialObject(w, bucket, object, httpRange.start, httpRange.length); err != nil {
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// unable to write headers, we've already printed data. Just close the connection.
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log.Error.Println(iodine.New(err, nil))
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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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writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
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}
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case drivers.ObjectNameInvalid:
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{
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writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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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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acceptsContentType := getContentType(req)
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// verify if this operation is allowed
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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var object, bucket string
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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 iodine.ToError(err).(type) {
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case nil:
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{
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setObjectHeaders(w, metadata)
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w.WriteHeader(http.StatusOK)
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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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w.Header().Set("Server", "Minio")
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w.WriteHeader(error.HTTPStatusCode)
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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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w.Header().Set("Server", "Minio")
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w.WriteHeader(error.HTTPStatusCode)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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error := getErrorCode(InternalError)
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w.Header().Set("Server", "Minio")
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w.WriteHeader(error.HTTPStatusCode)
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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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acceptsContentType := getContentType(req)
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// verify if this operation is allowed
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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var object, bucket string
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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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// get Content-MD5 sent by client and verify if valid
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md5 := req.Header.Get("Content-MD5")
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if !isValidMD5(md5) {
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writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
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return
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}
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/// if Content-Length missing, throw away
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size := req.Header.Get("Content-Length")
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if size == "" {
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writeErrorResponse(w, req, MissingContentLength, acceptsContentType, req.URL.Path)
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return
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}
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/// maximum Upload size for objects in a single operation
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if isMaxObjectSize(size) {
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writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
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return
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}
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/// minimum Upload size for objects in a single operation
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//
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// Surprisingly while Amazon in their document states that S3 objects have 1byte
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// as the minimum limit, they do not seem to enforce it one can successfully
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// create a 0byte file using a regular putObject() operation
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//
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// if isMinObjectSize(size) {
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// writeErrorResponse(w, req, EntityTooSmall, acceptsContentType, req.URL.Path)
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// return
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// }
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sizeInt64, err := strconv.ParseInt(size, 10, 64)
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if err != nil {
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writeErrorResponse(w, req, InvalidRequest, acceptsContentType, req.URL.Path)
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return
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}
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calculatedMD5, err := server.driver.CreateObject(bucket, object, "", md5, sizeInt64, req.Body)
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switch iodine.ToError(err).(type) {
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case nil:
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{
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w.Header().Set("ETag", calculatedMD5)
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writeSuccessResponse(w, acceptsContentType)
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}
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case drivers.ObjectExists:
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{
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writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
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}
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case drivers.BadDigest:
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{
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writeErrorResponse(w, req, BadDigest, acceptsContentType, req.URL.Path)
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}
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case drivers.EntityTooLarge:
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{
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writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
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}
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case drivers.InvalidDigest:
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{
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writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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}
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}
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}
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/// Multipart API
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// New multipart upload
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func (server *minioAPI) newMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
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acceptsContentType := getContentType(req)
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// handle ACL's here at bucket level
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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if !isRequestUploads(req.URL.Query()) {
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writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
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return
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}
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var object, bucket string
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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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uploadID, err := server.driver.NewMultipartUpload(bucket, object, "")
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switch iodine.ToError(err).(type) {
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case nil:
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{
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response := generateInitiateMultipartUploadResult(bucket, object, uploadID)
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encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
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// write headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
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// write body
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w.Write(encodedSuccessResponse)
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}
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case drivers.ObjectExists:
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{
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writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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}
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}
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}
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// Upload part
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func (server *minioAPI) putObjectPartHandler(w http.ResponseWriter, req *http.Request) {
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acceptsContentType := getContentType(req)
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// handle ACL's here at bucket level
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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// get Content-MD5 sent by client and verify if valid
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md5 := req.Header.Get("Content-MD5")
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if !isValidMD5(md5) {
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writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
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return
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}
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/// if Content-Length missing, throw away
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size := req.Header.Get("Content-Length")
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if size == "" {
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writeErrorResponse(w, req, MissingContentLength, acceptsContentType, req.URL.Path)
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return
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}
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/// maximum Upload size for multipart objects in a single operation
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if isMaxObjectSize(size) {
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writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
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return
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}
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sizeInt64, err := strconv.ParseInt(size, 10, 64)
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if err != nil {
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writeErrorResponse(w, req, InvalidRequest, acceptsContentType, req.URL.Path)
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return
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}
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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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uploadID := req.URL.Query().Get("uploadId")
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partIDString := req.URL.Query().Get("partNumber")
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partID, err := strconv.Atoi(partIDString)
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if err != nil {
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writeErrorResponse(w, req, InvalidPart, acceptsContentType, req.URL.Path)
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}
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calculatedMD5, err := server.driver.CreateObjectPart(bucket, object, uploadID, partID, "", md5, sizeInt64, req.Body)
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switch iodine.ToError(err).(type) {
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case nil:
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{
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w.Header().Set("ETag", calculatedMD5)
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writeSuccessResponse(w, acceptsContentType)
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}
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case drivers.InvalidUploadID:
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{
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writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
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}
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case drivers.ObjectExists:
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{
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writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
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}
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case drivers.BadDigest:
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{
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writeErrorResponse(w, req, BadDigest, acceptsContentType, req.URL.Path)
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}
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case drivers.EntityTooLarge:
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{
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writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
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}
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case drivers.InvalidDigest:
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{
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writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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}
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}
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}
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// Abort multipart upload
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func (server *minioAPI) abortMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
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acceptsContentType := getContentType(req)
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// handle ACL's here at bucket level
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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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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objectResourcesMetadata := getObjectResources(req.URL.Query())
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err := server.driver.AbortMultipartUpload(bucket, object, objectResourcesMetadata.UploadID)
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switch iodine.ToError(err).(type) {
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case nil:
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{
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setCommonHeaders(w, getContentTypeString(acceptsContentType), 0)
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w.WriteHeader(http.StatusNoContent)
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}
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case drivers.InvalidUploadID:
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{
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writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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}
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}
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}
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// List object parts
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func (server *minioAPI) listObjectPartsHandler(w http.ResponseWriter, req *http.Request) {
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acceptsContentType := getContentType(req)
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// handle ACL's here at bucket level
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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objectResourcesMetadata := getObjectResources(req.URL.Query())
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if objectResourcesMetadata.MaxParts == 0 {
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objectResourcesMetadata.MaxParts = maxPartsList
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}
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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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objectResourcesMetadata, err := server.driver.ListObjectParts(bucket, object, objectResourcesMetadata)
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switch iodine.ToError(err).(type) {
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case nil:
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{
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response := generateListPartsResult(objectResourcesMetadata)
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encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
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// write headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
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// write body
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w.Write(encodedSuccessResponse)
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}
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case drivers.InvalidUploadID:
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{
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writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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}
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}
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}
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// Complete multipart upload
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func (server *minioAPI) completeMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
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acceptsContentType := getContentType(req)
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// handle ACL's here at bucket level
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if !server.isValidOp(w, req, acceptsContentType) {
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return
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}
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decoder := xml.NewDecoder(req.Body)
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parts := &CompleteMultipartUpload{}
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err := decoder.Decode(parts)
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if err != nil {
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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return
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}
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if !sort.IsSorted(completedParts(parts.Part)) {
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writeErrorResponse(w, req, InvalidPartOrder, acceptsContentType, req.URL.Path)
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return
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}
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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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objectResourcesMetadata := getObjectResources(req.URL.Query())
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partMap := make(map[int]string)
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for _, part := range parts.Part {
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partMap[part.PartNumber] = part.ETag
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}
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etag, err := server.driver.CompleteMultipartUpload(bucket, object, objectResourcesMetadata.UploadID, partMap)
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switch iodine.ToError(err).(type) {
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case nil:
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{
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response := generateCompleteMultpartUploadResult(bucket, object, "", etag)
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encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
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// write headers
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setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
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// write body
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w.Write(encodedSuccessResponse)
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}
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case drivers.InvalidUploadID:
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{
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writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
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}
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default:
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{
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log.Error.Println(iodine.New(err, nil))
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writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
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}
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}
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}
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/// Delete API
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// Delete bucket
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func (server *minioAPI) deleteBucketHandler(w http.ResponseWriter, req *http.Request) {
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error := getErrorCode(NotImplemented)
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w.WriteHeader(error.HTTPStatusCode)
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}
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// Delete object
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func (server *minioAPI) deleteObjectHandler(w http.ResponseWriter, req *http.Request) {
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error := getErrorCode(NotImplemented)
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w.WriteHeader(error.HTTPStatusCode)
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}
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