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Remove parts that are missing in CompleteMultipartUpload (#1786)

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* Remove parts that are missing in CompleteMultipartUpload

* Moved isUploadIDExists under proper namespace locks

* Moved code that deletes part files to a function
This commit is contained in:
Krishnan Parthasarathi 2016-05-29 01:53:08 +05:30 committed by Harshavardhana
parent 7278b90fe1
commit c87f259820
2 changed files with 39 additions and 6 deletions
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17
xl-v1-multipart-common.go
View File

@ -511,3 +511,20 @@ func (xl xlObjects) isUploadIDExists(bucket, object, uploadID string) bool {
uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
return xl.isObject(minioMetaBucket, uploadIDPath)
}
// Removes part given by partName belonging to a mulitpart upload from minioMetaBucket
func (xl xlObjects) removeObjectPart(bucket, object, uploadID, partName string) {
curpartPath := path.Join(mpartMetaPrefix, bucket, object, uploadID, partName)
wg := sync.WaitGroup{}
for i, disk := range xl.storageDisks {
wg.Add(1)
go func(index int, disk StorageAPI) {
defer wg.Done()
// Ignoring failure to remove parts that weren't present in CompleteMultipartUpload
// requests. xl.json is the authoritative source of truth on which parts constitute
// the object. The presence of parts that don't belong in the object doesn't affect correctness.
_ = disk.DeleteFile(minioMetaBucket, curpartPath)
}(i, disk)
}
wg.Wait()
}

28
xl-v1-multipart.go
View File

@ -233,12 +233,14 @@ func (xl xlObjects) listObjectPartsCommon(bucket, object, uploadID string, partN
if !IsValidObjectName(object) {
return ListPartsInfo{}, ObjectNameInvalid{Bucket: bucket, Object: object}
}
if !xl.isUploadIDExists(bucket, object, uploadID) {
return ListPartsInfo{}, InvalidUploadID{UploadID: uploadID}
}
// 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 !xl.isUploadIDExists(bucket, object, uploadID) {
return ListPartsInfo{}, InvalidUploadID{UploadID: uploadID}
}
result := ListPartsInfo{}
uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
@ -404,6 +406,19 @@ func (xl xlObjects) CompleteMultipartUpload(bucket string, object string, upload
return "", toObjectErr(err, bucket, object)
}
// Remove parts that weren't present in CompleteMultipartUpload request
for _, curpart := range currentXLMeta.Parts {
if xlMeta.ObjectPartIndex(curpart.Number) == -1 {
// Delete the missing part files. e.g,
// Request 1: NewMultipart
// Request 2: PutObjectPart 1
// Request 3: PutObjectPart 2
// Request 4: CompleteMultipartUpload --part 2
// N.B. 1st part is not present. This part should be removed from the storage.
xl.removeObjectPart(bucket, object, uploadID, curpart.Name)
}
}
if err = xl.renameObject(minioMetaBucket, uploadIDPath, bucket, object); err != nil {
return "", toObjectErr(err, bucket, object)
}
@ -450,14 +465,15 @@ func (xl xlObjects) abortMultipartUploadCommon(bucket, object, uploadID string)
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))
if !xl.isUploadIDExists(bucket, object, uploadID) {
return InvalidUploadID{UploadID: uploadID}
}
// Cleanup all uploaded parts.
if err := cleanupUploadedParts(bucket, object, uploadID, xl.storageDisks...); err != nil {
return toObjectErr(err, bucket, object)