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Copy pathobject-handlers.go
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795 lines (720 loc) · 24.4 KB
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/*
* Minio Cloud 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 main
import (
"encoding/hex"
"encoding/xml"
"io"
"io/ioutil"
"net/http"
"net/url"
"sort"
"strconv"
"strings"
"time"
mux "github.com/gorilla/mux"
)
// supportedGetReqParams - supported request parameters for GET presigned request.
var supportedGetReqParams = map[string]string{
"response-expires": "Expires",
"response-content-type": "Content-Type",
"response-cache-control": "Cache-Control",
"response-content-disposition": "Content-Disposition",
}
// setGetRespHeaders - set any requested parameters as response headers.
func setGetRespHeaders(w http.ResponseWriter, reqParams url.Values) {
for k, v := range reqParams {
if header, ok := supportedGetReqParams[k]; ok {
w.Header()[header] = v
}
}
}
// errAllowableNotFound - For an anon user, return 404 if have ListBucket, 403 otherwise
// this is in keeping with the permissions sections of the docs of both:
// HEAD Object: http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectHEAD.html
// GET Object: http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
func errAllowableObjectNotFound(bucket string, r *http.Request) APIErrorCode {
if getRequestAuthType(r) == authTypeAnonymous {
//we care about the bucket as a whole, not a particular resource
url := *r.URL
url.Path = "/" + bucket
if s3Error := enforceBucketPolicy("s3:ListBucket", bucket, &url); s3Error != ErrNone {
return ErrAccessDenied
}
}
return ErrNoSuchKey
}
// Simple way to convert a func to io.Writer type.
type funcToWriter func([]byte) (int, error)
func (f funcToWriter) Write(p []byte) (int, error) {
return f(p)
}
// GetObjectHandler - GET Object
// ----------
// This implementation of the GET operation retrieves object. To use GET,
// you must have READ access to the object.
func (api objectAPIHandlers) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:GetObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
// Fetch object stat info.
objInfo, err := api.ObjectAPI.GetObjectInfo(bucket, object)
if err != nil {
errorIf(err, "Unable to fetch object info.")
apiErr := toAPIErrorCode(err)
if apiErr == ErrNoSuchKey {
apiErr = errAllowableObjectNotFound(bucket, r)
}
writeErrorResponse(w, r, apiErr, r.URL.Path)
return
}
// Get request range.
var hrange *httpRange
rangeHeader := r.Header.Get("Range")
if rangeHeader != "" {
if hrange, err = parseRequestRange(rangeHeader, objInfo.Size); err != nil {
// Handle only errInvalidRange
// Ignore other parse error and treat it as regular Get request like Amazon S3.
if err == errInvalidRange {
writeErrorResponse(w, r, ErrInvalidRange, r.URL.Path)
return
}
// log the error.
errorIf(err, "Invalid request range")
}
}
// Validate pre-conditions if any.
if checkPreconditions(w, r, objInfo) {
return
}
// Get the object.
startOffset := int64(0)
length := objInfo.Size
if hrange != nil {
startOffset = hrange.offsetBegin
length = hrange.getLength()
}
// Indicates if any data was written to the http.ResponseWriter
dataWritten := false
// io.Writer type which keeps track if any data was written.
writer := funcToWriter(func(p []byte) (int, error) {
if !dataWritten {
// Set headers on the first write.
// Set standard object headers.
setObjectHeaders(w, objInfo, hrange)
// Set any additional requested response headers.
setGetRespHeaders(w, r.URL.Query())
dataWritten = true
}
return w.Write(p)
})
// Reads the object at startOffset and writes to mw.
if err := api.ObjectAPI.GetObject(bucket, object, startOffset, length, writer); err != nil {
errorIf(err, "Unable to write to client.")
if !dataWritten {
// Error response only if no data has been written to client yet. i.e if
// partial data has already been written before an error
// occurred then no point in setting StatusCode and
// sending error XML.
apiErr := toAPIErrorCode(err)
writeErrorResponse(w, r, apiErr, r.URL.Path)
}
return
}
if !dataWritten {
// If ObjectAPI.GetObject did not return error and no data has
// been written it would mean that it is a 0-byte object.
// call wrter.Write(nil) to set appropriate headers.
writer.Write(nil)
}
}
// HeadObjectHandler - HEAD Object
// -----------
// The HEAD operation retrieves metadata from an object without returning the object itself.
func (api objectAPIHandlers) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:GetObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
objInfo, err := api.ObjectAPI.GetObjectInfo(bucket, object)
if err != nil {
errorIf(err, "Unable to fetch object info.")
apiErr := toAPIErrorCode(err)
if apiErr == ErrNoSuchKey {
apiErr = errAllowableObjectNotFound(bucket, r)
}
writeErrorResponse(w, r, apiErr, r.URL.Path)
return
}
// Validate pre-conditions if any.
if checkPreconditions(w, r, objInfo) {
return
}
// Set standard object headers.
setObjectHeaders(w, objInfo, nil)
// Successfull response.
w.WriteHeader(http.StatusOK)
}
// CopyObjectHandler - Copy Object
// ----------
// This implementation of the PUT operation adds an object to a bucket
// while reading the object from another source.
func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
// TODO: Reject requests where body/payload is present, for now we don't even read it.
// objectSource
objectSource, err := url.QueryUnescape(r.Header.Get("X-Amz-Copy-Source"))
if err != nil {
// Save unescaped string as is.
objectSource = r.Header.Get("X-Amz-Copy-Source")
}
// Skip the first element if it is '/', split the rest.
if strings.HasPrefix(objectSource, "/") {
objectSource = objectSource[1:]
}
splits := strings.SplitN(objectSource, "/", 2)
// Save sourceBucket and sourceObject extracted from url Path.
var sourceBucket, sourceObject string
if len(splits) == 2 {
sourceBucket = splits[0]
sourceObject = splits[1]
}
// If source object is empty, reply back error.
if sourceObject == "" {
writeErrorResponse(w, r, ErrInvalidCopySource, r.URL.Path)
return
}
// Source and destination objects cannot be same, reply back error.
if sourceObject == object && sourceBucket == bucket {
writeErrorResponse(w, r, ErrInvalidCopyDest, r.URL.Path)
return
}
objInfo, err := api.ObjectAPI.GetObjectInfo(sourceBucket, sourceObject)
if err != nil {
errorIf(err, "Unable to fetch object info.")
writeErrorResponse(w, r, toAPIErrorCode(err), objectSource)
return
}
// Verify before x-amz-copy-source preconditions before continuing with CopyObject.
if checkCopyObjectPreconditions(w, r, objInfo) {
return
}
/// maximum Upload size for object in a single CopyObject operation.
if isMaxObjectSize(objInfo.Size) {
writeErrorResponse(w, r, ErrEntityTooLarge, objectSource)
return
}
pipeReader, pipeWriter := io.Pipe()
go func() {
startOffset := int64(0) // Read the whole file.
// Get the object.
gErr := api.ObjectAPI.GetObject(sourceBucket, sourceObject, startOffset, objInfo.Size, pipeWriter)
if gErr != nil {
errorIf(gErr, "Unable to read an object.")
pipeWriter.CloseWithError(gErr)
return
}
pipeWriter.Close() // Close.
}()
// Size of object.
size := objInfo.Size
// Save metadata.
metadata := make(map[string]string)
// Save other metadata if available.
metadata["content-type"] = objInfo.ContentType
metadata["content-encoding"] = objInfo.ContentEncoding
// Do not set `md5sum` as CopyObject will not keep the
// same md5sum as the source.
// Create the object.
md5Sum, err := api.ObjectAPI.PutObject(bucket, object, size, pipeReader, metadata)
if err != nil {
errorIf(err, "Unable to create an object.")
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
objInfo, err = api.ObjectAPI.GetObjectInfo(bucket, object)
if err != nil {
errorIf(err, "Unable to fetch object info.")
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
response := generateCopyObjectResponse(md5Sum, objInfo.ModTime)
encodedSuccessResponse := encodeResponse(response)
// write headers
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
// Explicitly close the reader, to avoid fd leaks.
pipeReader.Close()
}
// PutObjectHandler - PUT Object
// ----------
// This implementation of the PUT operation adds an object to a bucket.
func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
// If the matching failed, it means that the X-Amz-Copy-Source was
// wrong, fail right here.
if _, ok := r.Header["X-Amz-Copy-Source"]; ok {
writeErrorResponse(w, r, ErrInvalidCopySource, r.URL.Path)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// Get Content-Md5 sent by client and verify if valid
md5Bytes, err := checkValidMD5(r.Header.Get("Content-Md5"))
if err != nil {
errorIf(err, "Unable to validate content-md5 format.")
writeErrorResponse(w, r, ErrInvalidDigest, r.URL.Path)
return
}
/// if Content-Length is unknown/missing, deny the request
size := r.ContentLength
if size == -1 && !contains(r.TransferEncoding, "chunked") {
writeErrorResponse(w, r, ErrMissingContentLength, r.URL.Path)
return
}
/// maximum Upload size for objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, r, ErrEntityTooLarge, r.URL.Path)
return
}
// Save metadata.
metadata := make(map[string]string)
// Make sure we hex encode md5sum here.
metadata["md5Sum"] = hex.EncodeToString(md5Bytes)
// Save other metadata if available.
metadata["content-type"] = r.Header.Get("Content-Type")
metadata["content-encoding"] = r.Header.Get("Content-Encoding")
for key := range r.Header {
cKey := http.CanonicalHeaderKey(key)
if strings.HasPrefix(cKey, "x-amz-meta-") {
metadata[cKey] = r.Header.Get(cKey)
} else if strings.HasPrefix(key, "x-minio-meta-") {
metadata[cKey] = r.Header.Get(cKey)
}
}
var md5Sum string
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
// Create anonymous object.
md5Sum, err = api.ObjectAPI.PutObject(bucket, object, size, r.Body, metadata)
case authTypePresigned, authTypeSigned:
// Initialize signature verifier.
reader := newSignVerify(r)
// Create object.
md5Sum, err = api.ObjectAPI.PutObject(bucket, object, size, reader, metadata)
}
if err != nil {
errorIf(err, "Unable to create an object.")
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
if md5Sum != "" {
w.Header().Set("ETag", "\""+md5Sum+"\"")
}
writeSuccessResponse(w, nil)
}
/// Multipart objectAPIHandlers
// NewMultipartUploadHandler - New multipart upload
func (api objectAPIHandlers) NewMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
var object, bucket string
vars := mux.Vars(r)
bucket = vars["bucket"]
object = vars[&
8BD0
quot;object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
// Save metadata.
metadata := make(map[string]string)
// Save other metadata if available.
metadata["content-type"] = r.Header.Get("Content-Type")
metadata["content-encoding"] = r.Header.Get("Content-Encoding")
for key := range r.Header {
cKey := http.CanonicalHeaderKey(key)
if strings.HasPrefix(cKey, "x-amz-meta-") {
metadata[cKey] = r.Header.Get(cKey)
} else if strings.HasPrefix(key, "x-minio-meta-") {
metadata[cKey] = r.Header.Get(cKey)
}
}
uploadID, err := api.ObjectAPI.NewMultipartUpload(bucket, object, metadata)
if err != nil {
errorIf(err, "Unable to initiate new multipart upload id.")
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
response := generateInitiateMultipartUploadResponse(bucket, object, uploadID)
encodedSuccessResponse := encodeResponse(response)
// write headers
setCommonHeaders(w)
// write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
// PutObjectPartHandler - Upload part
func (api objectAPIHandlers) PutObjectPartHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// get Content-Md5 sent by client and verify if valid
md5Bytes, err := checkValidMD5(r.Header.Get("Content-Md5"))
if err != nil {
writeErrorResponse(w, r, ErrInvalidDigest, r.URL.Path)
return
}
/// if Content-Length is unknown/missing, throw away
size := r.ContentLength
if size == -1 {
writeErrorResponse(w, r, ErrMissingContentLength, r.URL.Path)
return
}
/// maximum Upload size for multipart objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, r, ErrEntityTooLarge, r.URL.Path)
return
}
uploadID := r.URL.Query().Get("uploadId")
partIDString := r.URL.Query().Get("partNumber")
partID, err := strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(w, r, ErrInvalidPart, r.URL.Path)
return
}
// check partID with maximum part ID for multipart objects
if isMaxPartID(partID) {
writeErrorResponse(w, r, ErrInvalidMaxParts, r.URL.Path)
return
}
var partMD5 string
incomingMD5 := hex.EncodeToString(md5Bytes)
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
// No need to verify signature, anonymous request access is already allowed.
partMD5, err = api.ObjectAPI.PutObjectPart(bucket, object, uploadID, partID, size, r.Body, incomingMD5)
case authTypePresigned, authTypeSigned:
// Initialize signature verifier.
reader := newSignVerify(r)
partMD5, err = api.ObjectAPI.PutObjectPart(bucket, object, uploadID, partID, size, reader, incomingMD5)
}
if err != nil {
errorIf(err, "Unable to create object part.")
// Verify if the underlying error is signature mismatch.
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
if partMD5 != "" {
w.Header().Set("ETag", "\""+partMD5+"\"")
}
writeSuccessResponse(w, nil)
}
// AbortMultipartUploadHandler - Abort multipart upload
func (api objectAPIHandlers) AbortMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:AbortMultipartUpload", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
uploadID, _, _, _ := getObjectResources(r.URL.Query())
if err := api.ObjectAPI.AbortMultipartUpload(bucket, object, uploadID); err != nil {
errorIf(err, "Unable to abort multipart upload.")
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
writeSuccessNoContent(w)
}
// Send whitespace character, once every 5secs, until CompleteMultipartUpload is done.
// CompleteMultipartUpload method of the object layer indicates that it's done via doneCh
func sendWhiteSpaceChars(w http.ResponseWriter, doneCh <-chan struct{}) {
for {
select {
case <-time.After(5 * time.Second):
w.Write([]byte(" "))
case <-doneCh:
return
}
}
}
// ListObjectPartsHandler - List object parts
func (api objectAPIHandlers) ListObjectPartsHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:ListMultipartUploadParts", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
uploadID, partNumberMarker, maxParts, _ := getObjectResources(r.URL.Query())
if partNumberMarker < 0 {
writeErrorResponse(w, r, ErrInvalidPartNumberMarker, r.URL.Path)
return
}
if maxParts < 0 {
writeErrorResponse(w, r, ErrInvalidMaxParts, r.URL.Path)
return
}
listPartsInfo, err := api.ObjectAPI.ListObjectParts(bucket, object, uploadID, partNumberMarker, maxParts)
if err != nil {
errorIf(err, "Unable to list uploaded parts.")
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
return
}
response := generateListPartsResponse(listPartsInfo)
encodedSuccessResponse := encodeResponse(response)
// Write headers.
setCommonHeaders(w)
// Write success response.
writeSuccessResponse(w, encodedSuccessResponse)
}
// CompleteMultipartUploadHandler - Complete multipart upload
func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
// Get upload id.
uploadID, _, _, _ := getObjectResources(r.URL.Query())
var md5Sum string
var err error
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/mpuAndPermissions.html
if s3Error := enforceBucketPolicy("s3:PutObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypePresigned, authTypeSigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
completeMultipartBytes, err := ioutil.ReadAll(r.Body)
if err != nil {
errorIf(err, "Unable to complete multipart upload.")
writeErrorResponse(w, r, ErrInternalError, r.URL.Path)
return
}
complMultipartUpload := &completeMultipartUpload{}
if err = xml.Unmarshal(completeMultipartBytes, complMultipartUpload); err != nil {
errorIf(err, "Unable to parse complete multipart upload XML.")
writeErrorResponse(w, r, ErrMalformedXML, r.URL.Path)
return
}
if len(complMultipartUpload.Parts) == 0 {
writeErrorResponse(w, r, ErrMalformedXML, r.URL.Path)
return
}
if !sort.IsSorted(completedParts(complMultipartUpload.Parts)) {
writeErrorResponse(w, r, ErrInvalidPartOrder, r.URL.Path)
return
}
// Complete parts.
var completeParts []completePart
for _, part := range complMultipartUpload.Parts {
part.ETag = strings.TrimPrefix(part.ETag, "\"")
part.ETag = strings.TrimSuffix(part.ETag, "\"")
completeParts = append(completeParts, part)
}
// Complete multipart upload.
// Send 200 OK
setCommonHeaders(w)
w.WriteHeader(http.StatusOK)
// Xml headers need to be sent before we possibly send whitespace characters
// to the client.
_, err = w.Write([]byte(xml.Header))
if err != nil {
errorIf(err, "Unable to write XML header for complete multipart upload")
writeErrorResponseNoHeader(w, r, ErrInternalError, r.URL.Path)
return
}
doneCh := make(chan struct{})
// Signal that completeMultipartUpload is over via doneCh
go func(doneCh chan<- struct{}) {
md5Sum, err = api.ObjectAPI.CompleteMultipartUpload(bucket, object, uploadID, completeParts)
doneCh <- struct{}{}
}(doneCh)
sendWhiteSpaceChars(w, doneCh)
if err != nil {
errorIf(err, "Unable to complete multipart upload.")
switch oErr := err.(type) {
case PartTooSmall:
// Write part too small error.
writePartSmallErrorResponse(w, r, oErr)
default:
// Handle all other generic issues.
writeErrorResponseNoHeader(w, r, toAPIErrorCode(err), r.URL.Path)
}
return
}
// Get object location.
location := getLocation(r)
// Generate complete multipart response.
response := generateCompleteMultpartUploadResponse(bucket, object, location, md5Sum)
encodedSuccessResponse, err := xml.Marshal(response)
if err != nil {
errorIf(err, "Unable to parse CompleteMultipartUpload response")
writeErrorResponseNoHeader(w, r, ErrInternalError, r.URL.Path)
return
}
// write success response.
w.Write(encodedSuccessResponse)
w.(http.Flusher).Flush()
}
/// Delete objectAPIHandlers
// DeleteObjectHandler - delete an object
func (api objectAPIHandlers) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
switch getRequestAuthType(r) {
default:
// For all unknown auth types return error.
writeErrorResponse(w, r, ErrAccessDenied, r.URL.Path)
return
case authTypeAnonymous:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
if s3Error := enforceBucketPolicy("s3:DeleteObject", bucket, r.URL); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
case authTypeSigned, authTypePresigned:
if s3Error := isReqAuthenticated(r); s3Error != ErrNone {
writeErrorResponse(w, r, s3Error, r.URL.Path)
return
}
}
/// http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectDELETE.html
/// Ignore delete object errors, since we are suppposed to reply
/// only 204.
api.ObjectAPI.DeleteObject(bucket, object)
writeSuccessNoContent(w)
}