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697 lines
25 KiB
697 lines
25 KiB
/*
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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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"path"
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"strconv"
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"strings"
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"time"
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"github.com/skyrings/skyring-common/tools/uuid"
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)
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// listMultipartUploads - lists all multipart uploads.
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func (fs fsObjects) listMultipartUploads(bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (ListMultipartsInfo, error) {
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result := ListMultipartsInfo{}
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recursive := true
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if delimiter == slashSeparator {
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recursive = false
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}
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result.IsTruncated = true
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result.MaxUploads = maxUploads
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result.KeyMarker = keyMarker
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result.Prefix = prefix
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result.Delimiter = delimiter
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// Not using path.Join() as it strips off the trailing '/'.
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multipartPrefixPath := pathJoin(mpartMetaPrefix, bucket, prefix)
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if prefix == "" {
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// Should have a trailing "/" if prefix is ""
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// For ex. multipartPrefixPath should be "multipart/bucket/" if prefix is ""
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multipartPrefixPath += slashSeparator
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}
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multipartMarkerPath := ""
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if keyMarker != "" {
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multipartMarkerPath = pathJoin(mpartMetaPrefix, bucket, keyMarker)
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}
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var uploads []uploadMetadata
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var err error
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var eof bool
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if uploadIDMarker != "" {
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nsMutex.RLock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, keyMarker))
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uploads, _, err = listMultipartUploadIDs(bucket, keyMarker, uploadIDMarker, maxUploads, fs.storage)
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nsMutex.RUnlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, keyMarker))
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if err != nil {
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return ListMultipartsInfo{}, err
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}
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maxUploads = maxUploads - len(uploads)
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}
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var walkResultCh chan treeWalkResult
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var endWalkCh chan struct{}
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if maxUploads > 0 {
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walkResultCh, endWalkCh = fs.listPool.Release(listParams{minioMetaBucket, recursive, multipartMarkerPath, multipartPrefixPath})
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if walkResultCh == nil {
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endWalkCh = make(chan struct{})
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listDir := listDirFactory(fs.isMultipartUpload, fs.storage)
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walkResultCh = startTreeWalk(minioMetaBucket, multipartPrefixPath, multipartMarkerPath, recursive, listDir, endWalkCh)
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}
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for maxUploads > 0 {
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walkResult, ok := <-walkResultCh
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if !ok {
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// Closed channel.
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eof = true
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break
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}
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// For any walk error return right away.
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if walkResult.err != nil {
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// File not found or Disk not found is a valid case.
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if walkResult.err == errFileNotFound || walkResult.err == errDiskNotFound || walkResult.err == errFaultyDisk {
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eof = true
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break
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}
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return ListMultipartsInfo{}, err
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}
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entry := strings.TrimPrefix(walkResult.entry, retainSlash(pathJoin(mpartMetaPrefix, bucket)))
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if strings.HasSuffix(walkResult.entry, slashSeparator) {
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uploads = append(uploads, uploadMetadata{
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Object: entry,
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})
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maxUploads--
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if maxUploads == 0 {
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if walkResult.end {
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eof = true
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break
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}
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}
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continue
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}
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var tmpUploads []uploadMetadata
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var end bool
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uploadIDMarker = ""
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nsMutex.RLock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, entry))
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tmpUploads, end, err = listMultipartUploadIDs(bucket, entry, uploadIDMarker, maxUploads, fs.storage)
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nsMutex.RUnlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, entry))
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if err != nil {
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return ListMultipartsInfo{}, err
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}
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uploads = append(uploads, tmpUploads...)
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maxUploads -= len(tmpUploads)
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if walkResult.end && end {
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eof = true
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break
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}
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}
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}
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// Loop through all the received uploads fill in the multiparts result.
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for _, upload := range uploads {
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var objectName string
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var uploadID string
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if strings.HasSuffix(upload.Object, slashSeparator) {
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// All directory entries are common prefixes.
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uploadID = "" // Upload ids are empty for CommonPrefixes.
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objectName = upload.Object
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result.CommonPrefixes = append(result.CommonPrefixes, objectName)
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} else {
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uploadID = upload.UploadID
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objectName = upload.Object
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result.Uploads = append(result.Uploads, upload)
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}
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result.NextKeyMarker = objectName
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result.NextUploadIDMarker = uploadID
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}
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if !eof {
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// Save the go-routine state in the pool so that it can continue from where it left off on
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// the next request.
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fs.listPool.Set(listParams{bucket, recursive, result.NextKeyMarker, prefix}, walkResultCh, endWalkCh)
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}
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result.IsTruncated = !eof
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if !result.IsTruncated {
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result.NextKeyMarker = ""
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result.NextUploadIDMarker = ""
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}
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return result, nil
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}
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// ListMultipartUploads - lists all the pending multipart uploads on a
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// bucket. Additionally takes 'prefix, keyMarker, uploadIDmarker and a
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// delimiter' which allows us to list uploads match a particular
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// prefix or lexically starting from 'keyMarker' or delimiting the
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// output to get a directory like listing.
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//
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// Implements S3 compatible ListMultipartUploads API. The resulting
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// ListMultipartsInfo structure is unmarshalled directly into XML and
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// replied back to the client.
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func (fs fsObjects) ListMultipartUploads(bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (ListMultipartsInfo, error) {
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// Validate input arguments.
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if !IsValidBucketName(bucket) {
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return ListMultipartsInfo{}, BucketNameInvalid{Bucket: bucket}
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}
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if !fs.isBucketExist(bucket) {
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return ListMultipartsInfo{}, BucketNotFound{Bucket: bucket}
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}
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if !IsValidObjectPrefix(prefix) {
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return ListMultipartsInfo{}, ObjectNameInvalid{Bucket: bucket, Object: prefix}
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}
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// Verify if delimiter is anything other than '/', which we do not support.
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if delimiter != "" && delimiter != slashSeparator {
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return ListMultipartsInfo{}, UnsupportedDelimiter{
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Delimiter: delimiter,
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}
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}
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// Verify if marker has prefix.
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if keyMarker != "" && !strings.HasPrefix(keyMarker, prefix) {
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return ListMultipartsInfo{}, InvalidMarkerPrefixCombination{
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Marker: keyMarker,
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Prefix: prefix,
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}
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}
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if uploadIDMarker != "" {
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if strings.HasSuffix(keyMarker, slashSeparator) {
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return ListMultipartsInfo{}, InvalidUploadIDKeyCombination{
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UploadIDMarker: uploadIDMarker,
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KeyMarker: keyMarker,
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}
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}
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id, err := uuid.Parse(uploadIDMarker)
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if err != nil {
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return ListMultipartsInfo{}, err
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}
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if id.IsZero() {
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return ListMultipartsInfo{}, MalformedUploadID{
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UploadID: uploadIDMarker,
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}
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}
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}
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return fs.listMultipartUploads(bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
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}
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// newMultipartUpload - wrapper for initializing a new multipart
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// request, returns back a unique upload id.
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//
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// Internally this function creates 'uploads.json' associated for the
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// incoming object at '.minio/multipart/bucket/object/uploads.json' on
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// all the disks. `uploads.json` carries metadata regarding on going
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// multipart operation on the object.
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func (fs fsObjects) newMultipartUpload(bucket string, object string, meta map[string]string) (uploadID string, err error) {
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// Initialize `fs.json` values.
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fsMeta := newFSMetaV1()
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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 = fs.writeUploadJSON(bucket, object, uploadID, initiated); 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, uploadID)
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if err = fs.writeFSMetadata(minioMetaBucket, tempUploadIDPath, fsMeta); err != nil {
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return "", toObjectErr(err, minioMetaBucket, tempUploadIDPath)
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}
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err = fs.storage.RenameFile(minioMetaBucket, path.Join(tempUploadIDPath, fsMetaJSONFile), minioMetaBucket, path.Join(uploadIDPath, fsMetaJSONFile))
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if err != nil {
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if dErr := fs.storage.DeleteFile(minioMetaBucket, path.Join(tempUploadIDPath, fsMetaJSONFile)); 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
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// unique id. The unique id returned here is of UUID form, for each
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// subsequent request each UUID is unique.
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//
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// Implements S3 compatible initiate multipart API.
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func (fs fsObjects) NewMultipartUpload(bucket, object string, meta map[string]string) (string, error) {
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meta = make(map[string]string) // Reset the meta value, we are not going to save headers for fs.
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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 !fs.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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return fs.newMultipartUpload(bucket, object, meta)
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}
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// PutObjectPart - reads incoming data until EOF for the part file on
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// an ongoing multipart transaction. Internally incoming data is
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// written to '.minio/tmp' location and safely renamed to
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// '.minio/multipart' for reach parts.
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func (fs fsObjects) PutObjectPart(bucket, object, 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 !fs.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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uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
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nsMutex.RLock(minioMetaBucket, uploadIDPath)
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// Just check if the uploadID exists to avoid copy if it doesn't.
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uploadIDExists := fs.isUploadIDExists(bucket, object, uploadID)
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nsMutex.RUnlock(minioMetaBucket, uploadIDPath)
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if !uploadIDExists {
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return "", InvalidUploadID{UploadID: uploadID}
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}
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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%d", partID)
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tmpPartPath := path.Join(tmpMetaPrefix, uploadID, partSuffix)
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// Initialize md5 writer.
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md5Writer := md5.New()
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// Limit the reader to its provided size if specified.
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var limitDataReader io.Reader
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if size > 0 {
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// This is done so that we can avoid erroneous clients sending more data than the set content size.
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limitDataReader = io.LimitReader(data, size)
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} else {
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// else we read till EOF.
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limitDataReader = data
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}
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// Allocate buffer for staging buffer.
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bufSize := int64(readSizeV1)
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if size > 0 && bufSize > size {
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bufSize = size
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}
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var buf = make([]byte, int(bufSize))
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// Read up to required size
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totalLeft := size
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for {
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n, err := io.ReadFull(limitDataReader, buf)
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if err == io.EOF {
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break
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}
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if err != nil && err != io.ErrUnexpectedEOF {
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return "", toObjectErr(err, bucket, object)
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}
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// Update md5 writer.
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md5Writer.Write(buf[:n])
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if err = fs.storage.AppendFile(minioMetaBucket, tmpPartPath, buf[:n]); err != nil {
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return "", toObjectErr(err, bucket, object)
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}
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if totalLeft -= int64(n); size >= 0 && totalLeft <= 0 {
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break
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}
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}
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// Validate if payload is valid.
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if isSignVerify(data) {
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if err := data.(*signVerifyReader).Verify(); err != nil {
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// Incoming payload wrong, delete the temporary object.
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fs.storage.DeleteFile(minioMetaBucket, tmpPartPath)
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// Error return.
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return "", toObjectErr(err, bucket, object)
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}
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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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// MD5 mismatch, delete the temporary object.
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fs.storage.DeleteFile(minioMetaBucket, tmpPartPath)
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// Returns md5 mismatch.
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return "", BadDigest{md5Hex, newMD5Hex}
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}
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}
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// Hold write lock as we are updating fs.json
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nsMutex.Lock(minioMetaBucket, uploadIDPath)
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defer nsMutex.Unlock(minioMetaBucket, uploadIDPath)
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// Just check if the uploadID exists to avoid copy if it doesn't.
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if !fs.isUploadIDExists(bucket, object, uploadID) {
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return "", InvalidUploadID{UploadID: uploadID}
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}
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fsMeta, err := readFSMetadata(fs.storage, 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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fsMeta.AddObjectPart(partID, partSuffix, newMD5Hex, size)
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partPath := path.Join(mpartMetaPrefix, bucket, object, uploadID, partSuffix)
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err = fs.storage.RenameFile(minioMetaBucket, tmpPartPath, minioMetaBucket, partPath)
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if err != nil {
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if dErr := fs.storage.DeleteFile(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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uploadIDPath = path.Join(mpartMetaPrefix, bucket, object, uploadID)
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tempUploadIDPath := path.Join(tmpMetaPrefix, uploadID)
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if err = fs.writeFSMetadata(minioMetaBucket, tempUploadIDPath, fsMeta); err != nil {
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return "", toObjectErr(err, minioMetaBucket, tempUploadIDPath)
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}
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err = fs.storage.RenameFile(minioMetaBucket, path.Join(tempUploadIDPath, fsMetaJSONFile), minioMetaBucket, path.Join(uploadIDPath, fsMetaJSONFile))
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if err != nil {
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if dErr := fs.storage.DeleteFile(minioMetaBucket, path.Join(tempUploadIDPath, fsMetaJSONFile)); 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 newMD5Hex, nil
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}
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// listObjectParts - wrapper scanning through
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// '.minio/multipart/bucket/object/UPLOADID'. Lists all the parts
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// saved inside '.minio/multipart/bucket/object/UPLOADID'.
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func (fs fsObjects) listObjectParts(bucket, object, uploadID string, partNumberMarker, maxParts int) (ListPartsInfo, error) {
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result := ListPartsInfo{}
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uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
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fsMeta, err := readFSMetadata(fs.storage, 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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partIdx := fsMeta.ObjectPartIndex(partNumberMarker)
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parts := fsMeta.Parts
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if partIdx != -1 {
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parts = fsMeta.Parts[partIdx+1:]
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}
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count := maxParts
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for _, 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 = fs.storage.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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result.Parts = append(result.Parts, partInfo{
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PartNumber: part.Number,
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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 - lists all previously uploaded parts for a given
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// object and uploadID. Takes additional input of part-number-marker
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// to indicate where the listing should begin from.
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//
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// Implements S3 compatible ListObjectParts API. The resulting
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// ListPartsInfo structure is unmarshalled directly into XML and
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// replied back to the client.
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func (fs fsObjects) ListObjectParts(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 !fs.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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// Hold lock so that there is no competing abort-multipart-upload or complete-multipart-upload.
|
|
nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
|
|
defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
|
|
|
|
if !fs.isUploadIDExists(bucket, object, uploadID) {
|
|
return ListPartsInfo{}, InvalidUploadID{UploadID: uploadID}
|
|
}
|
|
return fs.listObjectParts(bucket, object, uploadID, partNumberMarker, maxParts)
|
|
}
|
|
|
|
// CompleteMultipartUpload - completes an ongoing multipart
|
|
// transaction after receiving all the parts indicated by the client.
|
|
// Returns an md5sum calculated by concatenating all the individual
|
|
// md5sums of all the parts.
|
|
//
|
|
// Implements S3 compatible Complete multipart API.
|
|
func (fs fsObjects) CompleteMultipartUpload(bucket string, object string, uploadID string, parts []completePart) (string, error) {
|
|
// Verify if bucket is valid.
|
|
if !IsValidBucketName(bucket) {
|
|
return "", BucketNameInvalid{Bucket: bucket}
|
|
}
|
|
// Verify whether the bucket exists.
|
|
if !fs.isBucketExist(bucket) {
|
|
return "", BucketNotFound{Bucket: bucket}
|
|
}
|
|
if !IsValidObjectName(object) {
|
|
return "", ObjectNameInvalid{
|
|
Bucket: bucket,
|
|
Object: object,
|
|
}
|
|
}
|
|
|
|
uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
|
|
// Hold lock so that
|
|
// 1) no one aborts this multipart upload
|
|
// 2) no one does a parallel complete-multipart-upload on this
|
|
// multipart upload
|
|
nsMutex.Lock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
|
|
defer nsMutex.Unlock(minioMetaBucket, pathJoin(mpartMetaPrefix, bucket, object, uploadID))
|
|
|
|
if !fs.isUploadIDExists(bucket, object, uploadID) {
|
|
return "", InvalidUploadID{UploadID: uploadID}
|
|
}
|
|
|
|
// Read saved fs metadata for ongoing multipart.
|
|
fsMeta, err := readFSMetadata(fs.storage, minioMetaBucket, uploadIDPath)
|
|
if err != nil {
|
|
return "", toObjectErr(err, minioMetaBucket, uploadIDPath)
|
|
}
|
|
|
|
// Calculate s3 compatible md5sum for complete multipart.
|
|
s3MD5, err := completeMultipartMD5(parts...)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
tempObj := path.Join(tmpMetaPrefix, uploadID, "part.1")
|
|
|
|
// Allocate staging buffer.
|
|
var buf = make([]byte, readSizeV1)
|
|
|
|
// Loop through all parts, validate them and then commit to disk.
|
|
for i, part := range parts {
|
|
partIdx := fsMeta.ObjectPartIndex(part.PartNumber)
|
|
if partIdx == -1 {
|
|
return "", InvalidPart{}
|
|
}
|
|
if fsMeta.Parts[partIdx].ETag != part.ETag {
|
|
return "", BadDigest{}
|
|
}
|
|
// All parts except the last part has to be atleast 5MB.
|
|
if (i < len(parts)-1) && !isMinAllowedPartSize(fsMeta.Parts[partIdx].Size) {
|
|
return "", PartTooSmall{
|
|
PartNumber: part.PartNumber,
|
|
PartSize: fsMeta.Parts[partIdx].Size,
|
|
PartETag: part.ETag,
|
|
}
|
|
}
|
|
// Construct part suffix.
|
|
partSuffix := fmt.Sprintf("object%d", part.PartNumber)
|
|
multipartPartFile := path.Join(mpartMetaPrefix, bucket, object, uploadID, partSuffix)
|
|
offset := int64(0)
|
|
totalLeft := fsMeta.Parts[partIdx].Size
|
|
for totalLeft > 0 {
|
|
curLeft := int64(readSizeV1)
|
|
if totalLeft < readSizeV1 {
|
|
curLeft = totalLeft
|
|
}
|
|
var n int64
|
|
n, err = fs.storage.ReadFile(minioMetaBucket, multipartPartFile, offset, buf[:curLeft])
|
|
if n > 0 {
|
|
if err = fs.storage.AppendFile(minioMetaBucket, tempObj, buf[:n]); err != nil {
|
|
return "", toObjectErr(err, minioMetaBucket, tempObj)
|
|
}
|
|
}
|
|
if err != nil {
|
|
if err == io.EOF || err == io.ErrUnexpectedEOF {
|
|
break
|
|
}
|
|
if err == errFileNotFound {
|
|
return "", InvalidPart{}
|
|
}
|
|
return "", toObjectErr(err, minioMetaBucket, multipartPartFile)
|
|
}
|
|
offset += n
|
|
totalLeft -= n
|
|
}
|
|
}
|
|
|
|
// Rename the file back to original location, if not delete the temporary object.
|
|
err = fs.storage.RenameFile(minioMetaBucket, tempObj, bucket, object)
|
|
if err != nil {
|
|
if dErr := fs.storage.DeleteFile(minioMetaBucket, tempObj); dErr != nil {
|
|
return "", toObjectErr(dErr, minioMetaBucket, tempObj)
|
|
}
|
|
return "", toObjectErr(err, bucket, object)
|
|
}
|
|
|
|
// Cleanup all the parts if everything else has been safely committed.
|
|
if err = cleanupUploadedParts(bucket, object, uploadID, fs.storage); err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// Hold the lock so that two parallel complete-multipart-uploads do not
|
|
// 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'.
|
|
uploadsJSON, err := readUploadsJSON(bucket, object, fs.storage)
|
|
if err != nil {
|
|
return "", toObjectErr(err, minioMetaBucket, object)
|
|
}
|
|
// If we have successfully read `uploads.json`, then we proceed to
|
|
// purge or update `uploads.json`.
|
|
uploadIDIdx := uploadsJSON.Index(uploadID)
|
|
if uploadIDIdx != -1 {
|
|
uploadsJSON.Uploads = append(uploadsJSON.Uploads[:uploadIDIdx], uploadsJSON.Uploads[uploadIDIdx+1:]...)
|
|
}
|
|
if len(uploadsJSON.Uploads) > 0 {
|
|
if err = fs.updateUploadsJSON(bucket, object, uploadsJSON); err != nil {
|
|
return "", toObjectErr(err, minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object))
|
|
}
|
|
// Return success.
|
|
return s3MD5, nil
|
|
}
|
|
|
|
if err = fs.storage.DeleteFile(minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object, uploadsJSONFile)); err != nil {
|
|
return "", toObjectErr(err, minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object))
|
|
}
|
|
|
|
// Return md5sum.
|
|
return s3MD5, nil
|
|
}
|
|
|
|
// abortMultipartUpload - wrapper for purging an ongoing multipart
|
|
// transaction, deletes uploadID entry from `uploads.json` and purges
|
|
// the directory at '.minio/multipart/bucket/object/uploadID' holding
|
|
// all the upload parts.
|
|
func (fs fsObjects) abortMultipartUpload(bucket, object, uploadID string) error {
|
|
// Cleanup all uploaded parts.
|
|
if err := cleanupUploadedParts(bucket, object, uploadID, fs.storage); 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'.
|
|
uploadsJSON, err := readUploadsJSON(bucket, object, fs.storage)
|
|
if err == nil {
|
|
uploadIDIdx := uploadsJSON.Index(uploadID)
|
|
if uploadIDIdx != -1 {
|
|
uploadsJSON.Uploads = append(uploadsJSON.Uploads[:uploadIDIdx], uploadsJSON.Uploads[uploadIDIdx+1:]...)
|
|
}
|
|
// There are pending uploads for the same object, preserve
|
|
// them update 'uploads.json' in-place.
|
|
if len(uploadsJSON.Uploads) > 0 {
|
|
err = fs.updateUploadsJSON(bucket, object, uploadsJSON)
|
|
if err != nil {
|
|
return toObjectErr(err, bucket, object)
|
|
}
|
|
return nil
|
|
}
|
|
} // No more pending uploads for the object, we purge the entire
|
|
// entry at '.minio/multipart/bucket/object'.
|
|
if err = fs.storage.DeleteFile(minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object, uploadsJSONFile)); err != nil {
|
|
return toObjectErr(err, minioMetaBucket, path.Join(mpartMetaPrefix, bucket, object))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// AbortMultipartUpload - aborts an ongoing multipart operation
|
|
// signified by the input uploadID. This is an atomic operation
|
|
// doesn't require clients to initiate multiple such requests.
|
|
//
|
|
// All parts are purged from all disks and reference to the uploadID
|
|
// would be removed from the system, rollback is not possible on this
|
|
// operation.
|
|
//
|
|
// Implements S3 compatible Abort multipart API, slight difference is
|
|
// that this is an atomic idempotent operation. Subsequent calls have
|
|
// no affect and further requests to the same uploadID would not be
|
|
// honored.
|
|
func (fs fsObjects) AbortMultipartUpload(bucket, object, uploadID string) error {
|
|
// Verify if bucket is valid.
|
|
if !IsValidBucketName(bucket) {
|
|
return BucketNameInvalid{Bucket: bucket}
|
|
}
|
|
if !fs.isBucketExist(bucket) {
|
|
return BucketNotFound{Bucket: bucket}
|
|
}
|
|
if !IsValidObjectName(object) {
|
|
return ObjectNameInvalid{Bucket: bucket, Object: object}
|
|
}
|
|
|
|
// 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))
|
|
|
|
if !fs.isUploadIDExists(bucket, object, uploadID) {
|
|
return InvalidUploadID{UploadID: uploadID}
|
|
}
|
|
|
|
err := fs.abortMultipartUpload(bucket, object, uploadID)
|
|
return err
|
|
}
|
|
|