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1d4ac4b084
In case of UUID generation failure mustGetUUID() will panic than infinitely trying in for loop.
103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
/*
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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 cmd
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import (
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"path"
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"time"
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)
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// Returns if the prefix is a multipart upload.
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func (fs fsObjects) isMultipartUpload(bucket, prefix string) bool {
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_, err := fs.storage.StatFile(bucket, pathJoin(prefix, uploadsJSONFile))
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return err == nil
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}
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// Checks whether bucket exists.
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func (fs fsObjects) isBucketExist(bucket string) bool {
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// Check whether bucket exists.
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_, err := fs.storage.StatVol(bucket)
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if err != nil {
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if err == errVolumeNotFound {
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return false
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}
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errorIf(err, "Stat failed on bucket "+bucket+".")
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return false
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}
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return true
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}
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// isUploadIDExists - verify if a given uploadID exists and is valid.
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func (fs fsObjects) isUploadIDExists(bucket, object, uploadID string) bool {
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uploadIDPath := path.Join(bucket, object, uploadID)
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_, err := fs.storage.StatFile(minioMetaMultipartBucket, path.Join(uploadIDPath, fsMetaJSONFile))
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if err != nil {
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if err == errFileNotFound {
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return false
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}
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errorIf(err, "Unable to access upload id "+pathJoin(minioMetaMultipartBucket, uploadIDPath))
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return false
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}
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return true
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}
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// updateUploadJSON - add or remove upload ID info in all `uploads.json`.
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func (fs fsObjects) updateUploadJSON(bucket, object, uploadID string, initiated time.Time, isRemove bool) error {
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uploadsPath := path.Join(bucket, object, uploadsJSONFile)
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tmpUploadsPath := mustGetUUID()
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uploadsJSON, err := readUploadsJSON(bucket, object, fs.storage)
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if errorCause(err) == errFileNotFound {
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// If file is not found, we assume a default (empty)
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// upload info.
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uploadsJSON, err = newUploadsV1("fs"), nil
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}
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if err != nil {
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return err
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}
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// update the uploadsJSON struct
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if !isRemove {
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// Add the uploadID
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uploadsJSON.AddUploadID(uploadID, initiated)
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} else {
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// Remove the upload ID
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uploadsJSON.RemoveUploadID(uploadID)
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}
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// update the file or delete it?
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if len(uploadsJSON.Uploads) > 0 {
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err = writeUploadJSON(&uploadsJSON, uploadsPath, tmpUploadsPath, fs.storage)
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} else {
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// no uploads, so we delete the file.
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if err = fs.storage.DeleteFile(minioMetaMultipartBucket, uploadsPath); err != nil {
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return toObjectErr(traceError(err), minioMetaMultipartBucket, uploadsPath)
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}
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}
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return err
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}
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// addUploadID - add upload ID and its initiated time to 'uploads.json'.
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func (fs fsObjects) addUploadID(bucket, object string, uploadID string, initiated time.Time) error {
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return fs.updateUploadJSON(bucket, object, uploadID, initiated, false)
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}
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// removeUploadID - remove upload ID in 'uploads.json'.
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func (fs fsObjects) removeUploadID(bucket, object string, uploadID string) error {
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return fs.updateUploadJSON(bucket, object, uploadID, time.Time{}, true)
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}
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