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/*
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* Minio Cloud Storage, (C) 2016 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 main
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import (
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"crypto/md5"
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"encoding/hex"
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"fmt"
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"io"
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"io/ioutil"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/minio/minio/pkg/mimedb"
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)
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// ListMultipartUploads - list multipart uploads.
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func (xl xlObjects) ListMultipartUploads(bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (ListMultipartsInfo, error) {
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return xl.listMultipartUploadsCommon(bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
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}
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/// Common multipart object layer functions.
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// newMultipartUploadCommon - initialize a new multipart, is a common function for both object layers.
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func (xl xlObjects) newMultipartUploadCommon(bucket string, object string, meta map[string]string) (uploadID string, err error) {
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// Verify if bucket name is valid.
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if !IsValidBucketName(bucket) {
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return "", BucketNameInvalid{Bucket: bucket}
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}
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// Verify whether the bucket exists.
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if !xl.isBucketExist(bucket) {
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return "", BucketNotFound{Bucket: bucket}
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}
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// Verify if object name is valid.
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if !IsValidObjectName(object) {
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return "", ObjectNameInvalid{Bucket: bucket, Object: object}
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}
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// No metadata is set, allocate a new one.
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if meta == nil {
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meta = make(map[string]string)
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}
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xlMeta := xlMetaV1{}
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// If not set default to "application/octet-stream"
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if meta["content-type"] == "" {
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contentType := "application/octet-stream"
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if objectExt := filepath.Ext(object); objectExt != "" {
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content, ok := mimedb.DB[strings.ToLower(strings.TrimPrefix(objectExt, "."))]
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if ok {
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contentType = content.ContentType
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}
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}
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meta["content-type"] = contentType
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}
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xlMeta.Meta = meta
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// This lock needs to be held for any changes to the directory contents of ".minio/multipart/object/"
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nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object))
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defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object))
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uploadID = getUUID()
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initiated := time.Now().UTC()
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// Create 'uploads.json'
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if err = writeUploadJSON(bucket, object, uploadID, initiated, xl.storageDisks...); err != nil {
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return "", err
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}
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uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
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tempUploadIDPath := path.Join(tmpMetaPrefix, bucket, object, uploadID)
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if err = xl.writeXLMetadata(minioMetaBucket, tempUploadIDPath, xlMeta); err != nil {
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return "", toObjectErr(err, minioMetaBucket, tempUploadIDPath)
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}
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if err = xl.renameXLMetadata(minioMetaBucket, tempUploadIDPath, minioMetaBucket, uploadIDPath); err != nil {
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if dErr := xl.deleteXLMetadata(minioMetaBucket, tempUploadIDPath); dErr != nil {
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return "", toObjectErr(dErr, minioMetaBucket, tempUploadIDPath)
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}
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return "", toObjectErr(err, minioMetaBucket, uploadIDPath)
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}
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// Return success.
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return uploadID, nil
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}
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// NewMultipartUpload - initialize a new multipart upload, returns a unique id.
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func (xl xlObjects) NewMultipartUpload(bucket, object string, meta map[string]string) (string, error) {
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return xl.newMultipartUploadCommon(bucket, object, meta)
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}
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// putObjectPartCommon - put object part.
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func (xl xlObjects) putObjectPartCommon(bucket string, object string, uploadID string, partID int, size int64, data io.Reader, md5Hex string) (string, error) {
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// Verify if bucket is valid.
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if !IsValidBucketName(bucket) {
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return "", BucketNameInvalid{Bucket: bucket}
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}
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// Verify whether the bucket exists.
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if !xl.isBucketExist(bucket) {
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return "", BucketNotFound{Bucket: bucket}
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}
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if !IsValidObjectName(object) {
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return "", ObjectNameInvalid{Bucket: bucket, Object: object}
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}
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if !xl.isUploadIDExists(bucket, object, uploadID) {
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return "", InvalidUploadID{UploadID: uploadID}
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}
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// Hold read lock on the uploadID so that no one aborts it.
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nsMutex.RLock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
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defer nsMutex.RUnlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
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// Hold write lock on the part so that there is no parallel upload on the part.
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nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID, strconv.Itoa(partID)))
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defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID, strconv.Itoa(partID)))
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partSuffix := fmt.Sprintf("object.%.5d", partID)
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tmpPartPath := path.Join(tmpMetaPrefix, bucket, object, uploadID, partSuffix)
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fileWriter, err := xl.erasureDisk.CreateFile(minioMetaBucket, tmpPartPath)
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if err != nil {
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return "", toObjectErr(err, bucket, object)
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}
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// Initialize md5 writer.
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md5Writer := md5.New()
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// Instantiate a new multi writer.
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multiWriter := io.MultiWriter(md5Writer, fileWriter)
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// Instantiate checksum hashers and create a multiwriter.
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if size > 0 {
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if _, err = io.CopyN(multiWriter, data, size); err != nil {
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if clErr := safeCloseAndRemove(fileWriter); clErr != nil {
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return "", toObjectErr(clErr, bucket, object)
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}
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return "", toObjectErr(err, bucket, object)
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}
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// Reader shouldn't have more data what mentioned in size argument.
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// reading one more byte from the reader to validate it.
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// expected to fail, success validates existence of more data in the reader.
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if _, err = io.CopyN(ioutil.Discard, data, 1); err == nil {
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if clErr := safeCloseAndRemove(fileWriter); clErr != nil {
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return "", toObjectErr(clErr, bucket, object)
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}
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return "", UnExpectedDataSize{Size: int(size)}
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}
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} else {
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var n int64
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if n, err = io.Copy(multiWriter, data); err != nil {
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if clErr := safeCloseAndRemove(fileWriter); clErr != nil {
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return "", toObjectErr(clErr, bucket, object)
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}
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return "", toObjectErr(err, bucket, object)
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}
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size = n
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}
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newMD5Hex := hex.EncodeToString(md5Writer.Sum(nil))
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if md5Hex != "" {
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if newMD5Hex != md5Hex {
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if clErr := safeCloseAndRemove(fileWriter); clErr != nil {
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return "", toObjectErr(clErr, bucket, object)
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}
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return "", BadDigest{md5Hex, newMD5Hex}
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}
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}
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err = fileWriter.Close()
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if err != nil {
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if clErr := safeCloseAndRemove(fileWriter); clErr != nil {
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return "", toObjectErr(clErr, bucket, object)
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}
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return "", err
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}
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uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
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xlMeta, err := readXLMetadata(xl.getRandomDisk(), minioMetaBucket, uploadIDPath)
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if err != nil {
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return "", toObjectErr(err, minioMetaBucket, uploadIDPath)
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}
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xlMeta.AddObjectPart(partSuffix, newMD5Hex, size)
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partPath := path.Join(mpartMetaPrefix, bucket, object, uploadID, partSuffix)
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err = xl.renameObject(minioMetaBucket, tmpPartPath, minioMetaBucket, partPath)
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if err != nil {
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if dErr := xl.deleteObject(minioMetaBucket, tmpPartPath); dErr != nil {
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return "", toObjectErr(dErr, minioMetaBucket, tmpPartPath)
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}
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return "", toObjectErr(err, minioMetaBucket, partPath)
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}
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if err = xl.writeXLMetadata(minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object, uploadID), xlMeta); err != nil {
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return "", toObjectErr(err, minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object, uploadID))
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}
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return newMD5Hex, nil
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}
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// PutObjectPart - writes the multipart upload chunks.
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func (xl xlObjects) PutObjectPart(bucket, object, uploadID string, partID int, size int64, data io.Reader, md5Hex string) (string, error) {
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return xl.putObjectPartCommon(bucket, object, uploadID, partID, size, data, md5Hex)
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}
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// ListObjectParts - list object parts, common function across both object layers.
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func (xl xlObjects) listObjectPartsCommon(bucket, object, uploadID string, partNumberMarker, maxParts int) (ListPartsInfo, error) {
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// Verify if bucket is valid.
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if !IsValidBucketName(bucket) {
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return ListPartsInfo{}, BucketNameInvalid{Bucket: bucket}
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}
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// Verify whether the bucket exists.
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if !xl.isBucketExist(bucket) {
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return ListPartsInfo{}, BucketNotFound{Bucket: bucket}
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}
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if !IsValidObjectName(object) {
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return ListPartsInfo{}, ObjectNameInvalid{Bucket: bucket, Object: object}
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}
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if !xl.isUploadIDExists(bucket, object, uploadID) {
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return ListPartsInfo{}, InvalidUploadID{UploadID: uploadID}
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}
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// Hold lock so that there is no competing abort-multipart-upload or complete-multipart-upload.
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nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
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defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
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result := ListPartsInfo{}
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disk := xl.getRandomDisk() // Pick a random disk and read `xl.json` from there.
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uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
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xlMeta, err := readXLMetadata(disk, minioMetaBucket, uploadIDPath)
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if err != nil {
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return ListPartsInfo{}, toObjectErr(err, minioMetaBucket, uploadIDPath)
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}
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// Only parts with higher part numbers will be listed.
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parts := xlMeta.Parts[partNumberMarker:]
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count := maxParts
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for i, part := range parts {
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var fi FileInfo
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partNamePath := path.Join(mpartMetaPrefix, bucket, object, uploadID, part.Name)
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fi, err = disk.StatFile(minioMetaBucket, partNamePath)
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if err != nil {
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return ListPartsInfo{}, toObjectErr(err, minioMetaBucket, partNamePath)
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}
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partNum := i + partNumberMarker + 1
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result.Parts = append(result.Parts, partInfo{
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PartNumber: partNum,
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ETag: part.ETag,
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LastModified: fi.ModTime,
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Size: fi.Size,
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})
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count--
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if count == 0 {
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break
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}
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}
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// If listed entries are more than maxParts, we set IsTruncated as true.
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if len(parts) > len(result.Parts) {
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result.IsTruncated = true
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// Make sure to fill next part number marker if IsTruncated is
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// true for subsequent listing.
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nextPartNumberMarker := result.Parts[len(result.Parts)-1].PartNumber
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result.NextPartNumberMarker = nextPartNumberMarker
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}
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result.Bucket = bucket
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result.Object = object
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result.UploadID = uploadID
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result.MaxParts = maxParts
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return result, nil
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}
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// ListObjectParts - list object parts.
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func (xl xlObjects) ListObjectParts(bucket, object, uploadID string, partNumberMarker, maxParts int) (ListPartsInfo, error) {
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return xl.listObjectPartsCommon(bucket, object, uploadID, partNumberMarker, maxParts)
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}
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func (xl xlObjects) CompleteMultipartUpload(bucket string, object string, uploadID string, parts []completePart) (string, error) {
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// Verify if bucket is valid.
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if !IsValidBucketName(bucket) {
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return "", BucketNameInvalid{Bucket: bucket}
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}
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// Verify whether the bucket exists.
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if !xl.isBucketExist(bucket) {
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return "", BucketNotFound{Bucket: bucket}
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}
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if !IsValidObjectName(object) {
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return "", ObjectNameInvalid{
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Bucket: bucket,
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Object: object,
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}
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}
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if !xl.isUploadIDExists(bucket, object, uploadID) {
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return "", InvalidUploadID{UploadID: uploadID}
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}
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// Hold lock so that
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// 1) no one aborts this multipart upload
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// 2) no one does a parallel complete-multipart-upload on this multipart upload
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nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
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defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
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// Calculate s3 compatible md5sum for complete multipart.
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s3MD5, err := completeMultipartMD5(parts...)
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if err != nil {
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return "", err
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}
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uploadIDPath := pathJoin(mpartMetaPrefix, bucket, object, uploadID)
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xlMeta, err := readXLMetadata(xl.getRandomDisk(), minioMetaBucket, uploadIDPath)
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if err != nil {
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return "", err
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}
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var objectSize int64
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// Loop through all parts, validate them and then commit to disk.
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for i, part := range parts {
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// Construct part suffix.
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partSuffix := fmt.Sprintf("object.%.5d", part.PartNumber)
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if xlMeta.SearchObjectPart(partSuffix, part.ETag) == -1 {
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return "", InvalidPart{}
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}
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// All parts except the last part has to be atleast 5MB.
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if (i < len(parts)-1) && !isMinAllowedPartSize(xlMeta.Parts[i].Size) {
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return "", PartTooSmall{}
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}
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objectSize += xlMeta.Parts[i].Size
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}
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// Check if an object is present as one of the parent dir.
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if xl.parentDirIsObject(bucket, path.Dir(object)) {
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return "", toObjectErr(errFileAccessDenied, bucket, object)
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}
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// Save the final object size and modtime.
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xlMeta.Stat.Size = objectSize
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xlMeta.Stat.ModTime = time.Now().UTC()
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// Save successfully calculated md5sum.
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|
xlMeta.Meta["md5Sum"] = s3MD5
|
|
|
|
if err = xl.writeXLMetadata(minioMetaBucket, uploadIDPath, xlMeta); err != nil {
|
|
|
|
return "", toObjectErr(err, minioMetaBucket, uploadIDPath)
|
|
|
|
}
|
|
|
|
|
|
|
|
// Hold write lock on the destination before rename
|
|
|
|
nsMutex.Lock(bucket, object)
|
|
|
|
defer nsMutex.Unlock(bucket, object)
|
|
|
|
|
|
|
|
// Delete if an object already exists.
|
|
|
|
// FIXME: rename it to tmp file and delete only after
|
|
|
|
// the newly uploaded file is renamed from tmp location to
|
|
|
|
// the original location. Verify if the object is a multipart object.
|
|
|
|
err = xl.deleteObject(bucket, object)
|
|
|
|
if err != nil {
|
|
|
|
return "", toObjectErr(err, bucket, object)
|
|
|
|
}
|
|
|
|
|
|
|
|
if err = xl.renameObject(minioMetaBucket, uploadIDPath, bucket, object); err != nil {
|
|
|
|
return "", toObjectErr(err, bucket, object)
|
|
|
|
}
|
|
|
|
|
|
|
|
// Hold the lock so that two parallel complete-multipart-uploads do no
|
|
|
|
// leave a stale uploads.json behind.
|
|
|
|
nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object))
|
|
|
|
defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object))
|
|
|
|
|
|
|
|
// Validate if there are other incomplete upload-id's present for
|
|
|
|
// the object, if yes do not attempt to delete 'uploads.json'.
|
|
|
|
uploadIDs, err := getUploadIDs(bucket, object, xl.storageDisks...)
|
|
|
|
if err == nil {
|
|
|
|
uploadIDIdx := uploadIDs.SearchUploadID(uploadID)
|
|
|
|
if uploadIDIdx != -1 {
|
|
|
|
uploadIDs.Uploads = append(uploadIDs.Uploads[:uploadIDIdx], uploadIDs.Uploads[uploadIDIdx+1:]...)
|
|
|
|
}
|
|
|
|
if len(uploadIDs.Uploads) > 0 {
|
|
|
|
if err = updateUploadJSON(bucket, object, uploadIDs, xl.storageDisks...); err != nil {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
return s3MD5, nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
err = xl.deleteObject(minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object))
|
|
|
|
if err != nil {
|
|
|
|
return "", toObjectErr(err, minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object))
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return md5sum.
|
|
|
|
return s3MD5, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// abortMultipartUploadCommon - aborts a multipart upload, common
|
|
|
|
// function used by both object layers.
|
|
|
|
func (xl xlObjects) abortMultipartUploadCommon(bucket, object, uploadID string) error {
|
|
|
|
// Verify if bucket is valid.
|
|
|
|
if !IsValidBucketName(bucket) {
|
|
|
|
return BucketNameInvalid{Bucket: bucket}
|
|
|
|
}
|
|
|
|
if !xl.isBucketExist(bucket) {
|
|
|
|
return BucketNotFound{Bucket: bucket}
|
|
|
|
}
|
|
|
|
if !IsValidObjectName(object) {
|
|
|
|
return ObjectNameInvalid{Bucket: bucket, Object: object}
|
|
|
|
}
|
|
|
|
if !xl.isUploadIDExists(bucket, object, uploadID) {
|
|
|
|
return InvalidUploadID{UploadID: uploadID}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Hold lock so that there is no competing complete-multipart-upload or put-object-part.
|
|
|
|
nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
|
|
|
|
defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
|
|
|
|
|
|
|
|
// Cleanup all uploaded parts.
|
|
|
|
if err := cleanupUploadedParts(bucket, object, uploadID, xl.storageDisks...); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
// Validate if there are other incomplete upload-id's present for
|
|
|
|
// the object, if yes do not attempt to delete 'uploads.json'.
|
|
|
|
uploadIDs, err := getUploadIDs(bucket, object, xl.storageDisks...)
|
|
|
|
if err == nil {
|
|
|
|
uploadIDIdx := uploadIDs.SearchUploadID(uploadID)
|
|
|
|
if uploadIDIdx != -1 {
|
|
|
|
uploadIDs.Uploads = append(uploadIDs.Uploads[:uploadIDIdx], uploadIDs.Uploads[uploadIDIdx+1:]...)
|
|
|
|
}
|
|
|
|
if len(uploadIDs.Uploads) > 0 {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if err = xl.deleteObject(minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object)); err != nil {
|
|
|
|
return toObjectErr(err, minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object))
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// AbortMultipartUpload - aborts a multipart upload.
|
|
|
|
func (xl xlObjects) AbortMultipartUpload(bucket, object, uploadID string) error {
|
|
|
|
return xl.abortMultipartUploadCommon(bucket, object, uploadID)
|
|
|
|
}
|