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minio/fs-v1-multipart-common.go

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/*
* Minio Cloud Storage, (C) 2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"path"
"strings"
)
// Returns if the prefix is a multipart upload.
func (fs fsObjects) isMultipartUpload(bucket, prefix string) bool {
_, err := fs.storage.StatFile(bucket, pathJoin(prefix, uploadsJSONFile))
return err == nil
}
// listUploadsInfo - list all uploads info.
func (fs fsObjects) listUploadsInfo(prefixPath string) (uploads []uploadInfo, err error) {
splitPrefixes := strings.SplitN(prefixPath, "/", 3)
uploadIDs, err := readUploadsJSON(splitPrefixes[1], splitPrefixes[2], fs.storage)
if err != nil {
if err == errFileNotFound {
return []uploadInfo{}, nil
}
return nil, err
}
uploads = uploadIDs.Uploads
return uploads, nil
}
// Checks whether bucket exists.
func (fs fsObjects) isBucketExist(bucket string) bool {
// Check whether bucket exists.
_, err := fs.storage.StatVol(bucket)
if err != nil {
if err == errVolumeNotFound {
return false
}
errorIf(err, "Stat failed on bucket "+bucket+".")
return false
}
return true
}
// isUploadIDExists - verify if a given uploadID exists and is valid.
func (fs fsObjects) isUploadIDExists(bucket, object, uploadID string) bool {
uploadIDPath := path.Join(mpartMetaPrefix, bucket, object, uploadID)
_, err := fs.storage.StatFile(minioMetaBucket, path.Join(uploadIDPath, fsMetaJSONFile))
if err != nil {
if err == errFileNotFound {
return false
}
errorIf(err, "Unable to access upload id"+uploadIDPath)
return false
}
return true
}