2016-04-29 23:24:10 +02:00
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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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2016-08-19 01:23:42 +02:00
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package cmd
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2016-04-29 23:24:10 +02:00
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import (
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2016-05-13 20:52:36 +02:00
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"crypto/md5"
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2016-10-03 00:51:49 +02:00
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"crypto/sha256"
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2016-05-13 20:52:36 +02:00
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"encoding/hex"
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2016-10-05 21:48:07 +02:00
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"fmt"
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2016-10-03 00:51:49 +02:00
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"hash"
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2016-04-29 23:24:10 +02:00
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"io"
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2016-05-26 23:43:17 +02:00
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"os"
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2016-05-29 00:13:15 +02:00
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"path"
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2016-05-21 05:48:47 +02:00
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"sort"
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2016-04-29 23:24:10 +02:00
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"strings"
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"github.com/minio/minio/pkg/mimedb"
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)
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// fsObjects - Implements fs object layer.
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type fsObjects struct {
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storage StorageAPI
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2016-06-25 01:41:57 +02:00
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// List pool management.
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listPool *treeWalkPool
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2016-04-29 23:24:10 +02:00
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}
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2016-09-15 22:43:40 +02:00
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// list of all errors that can be ignored in tree walk operation in FS
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var fsTreeWalkIgnoredErrs = []error{
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errFileNotFound,
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errVolumeNotFound,
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}
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2016-04-29 23:24:10 +02:00
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// newFSObjects - initialize new fs object layer.
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2016-10-05 21:48:07 +02:00
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func newFSObjects(storage StorageAPI) (ObjectLayer, error) {
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if storage == nil {
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return nil, errInvalidArgument
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2016-07-02 10:59:28 +02:00
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}
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2016-05-31 01:51:59 +02:00
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// Runs house keeping code, like creating minioMetaBucket, cleaning up tmp files etc.
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2016-10-05 21:48:07 +02:00
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if err := fsHouseKeeping(storage); err != nil {
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2016-07-02 10:59:28 +02:00
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return nil, err
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}
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2016-06-24 11:06:23 +02:00
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2016-10-05 21:48:07 +02:00
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// Load format and validate.
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_, err := loadFormatFS(storage)
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2016-06-14 10:39:40 +02:00
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if err != nil {
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2016-10-05 21:48:07 +02:00
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return nil, fmt.Errorf("Unable to recognize backend format, %s", err)
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2016-06-14 10:39:40 +02:00
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}
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2016-06-24 11:06:23 +02:00
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2016-08-05 07:01:58 +02:00
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// Initialize fs objects.
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fs := fsObjects{
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2016-10-05 21:48:07 +02:00
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storage: storage,
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listPool: newTreeWalkPool(globalLookupTimeout),
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2016-08-05 07:01:58 +02:00
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}
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// Return successfully initialized object layer.
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return fs, nil
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2016-04-29 23:24:10 +02:00
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}
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2016-08-15 08:55:48 +02:00
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// Should be called when process shuts down.
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func (fs fsObjects) Shutdown() error {
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// List if there are any multipart entries.
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_, err := fs.storage.ListDir(minioMetaBucket, mpartMetaPrefix)
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if err != errFileNotFound {
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2016-09-13 20:01:10 +02:00
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// A nil err means that multipart directory is not empty hence do not remove '.minio.sys' volume.
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2016-10-04 09:09:21 +02:00
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// A non nil err means that an unexpected error occurred
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2016-09-15 01:41:39 +02:00
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return toObjectErr(traceError(err))
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2016-08-15 08:55:48 +02:00
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}
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// List if there are any bucket configuration entries.
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_, err = fs.storage.ListDir(minioMetaBucket, bucketConfigPrefix)
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if err != errFileNotFound {
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2016-09-13 20:01:10 +02:00
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// A nil err means that bucket config directory is not empty hence do not remove '.minio.sys' volume.
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2016-10-04 09:09:21 +02:00
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// A non nil err means that an unexpected error occurred
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2016-09-15 01:41:39 +02:00
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return toObjectErr(traceError(err))
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2016-08-15 08:55:48 +02:00
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}
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// Cleanup everything else.
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prefix := ""
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if err = cleanupDir(fs.storage, minioMetaBucket, prefix); err != nil {
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return err
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}
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if err = fs.storage.DeleteVol(minioMetaBucket); err != nil {
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if err != errVolumeNotEmpty {
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2016-09-15 01:41:39 +02:00
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return toObjectErr(traceError(err))
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2016-08-15 08:55:48 +02:00
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}
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}
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// Successful.
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return nil
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}
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2016-05-26 23:13:10 +02:00
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// StorageInfo - returns underlying storage statistics.
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func (fs fsObjects) StorageInfo() StorageInfo {
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2016-08-26 02:16:34 +02:00
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info, err := fs.storage.DiskInfo()
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errorIf(err, "Unable to get disk info %#v", fs.storage)
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2016-10-05 21:48:07 +02:00
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storageInfo := StorageInfo{
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Total: info.Total,
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Free: info.Free,
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}
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2016-10-05 21:48:07 +02:00
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storageInfo.Backend.Type = FS
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return storageInfo
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2016-05-26 23:13:10 +02:00
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}
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2016-04-29 23:24:10 +02:00
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/// Bucket operations
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// MakeBucket - make a bucket.
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func (fs fsObjects) MakeBucket(bucket string) error {
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2016-05-21 05:48:47 +02:00
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// Verify if bucket is valid.
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if !IsValidBucketName(bucket) {
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2016-08-25 18:39:01 +02:00
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return traceError(BucketNameInvalid{Bucket: bucket})
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2016-05-21 05:48:47 +02:00
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}
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if err := fs.storage.MakeVol(bucket); err != nil {
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2016-08-25 18:39:01 +02:00
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return toObjectErr(traceError(err), bucket)
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2016-05-21 05:48:47 +02:00
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}
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return nil
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2016-04-29 23:24:10 +02:00
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}
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// GetBucketInfo - get bucket info.
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func (fs fsObjects) GetBucketInfo(bucket string) (BucketInfo, error) {
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2016-05-21 05:48:47 +02:00
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// Verify if bucket is valid.
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if !IsValidBucketName(bucket) {
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2016-08-25 18:39:01 +02:00
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return BucketInfo{}, traceError(BucketNameInvalid{Bucket: bucket})
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2016-05-21 05:48:47 +02:00
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}
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vi, err := fs.storage.StatVol(bucket)
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if err != nil {
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2016-08-25 18:39:01 +02:00
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return BucketInfo{}, toObjectErr(traceError(err), bucket)
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2016-05-21 05:48:47 +02:00
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}
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return BucketInfo{
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Name: bucket,
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Created: vi.Created,
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}, nil
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2016-04-29 23:24:10 +02:00
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}
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// ListBuckets - list buckets.
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func (fs fsObjects) ListBuckets() ([]BucketInfo, error) {
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2016-05-21 05:48:47 +02:00
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var bucketInfos []BucketInfo
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vols, err := fs.storage.ListVols()
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if err != nil {
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2016-08-25 18:39:01 +02:00
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return nil, toObjectErr(traceError(err))
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2016-05-21 05:48:47 +02:00
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}
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for _, vol := range vols {
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// StorageAPI can send volume names which are incompatible
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// with buckets, handle it and skip them.
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if !IsValidBucketName(vol.Name) {
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continue
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}
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2016-07-24 07:51:12 +02:00
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// Ignore the volume special bucket.
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if vol.Name == minioMetaBucket {
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continue
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}
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2016-05-21 05:48:47 +02:00
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bucketInfos = append(bucketInfos, BucketInfo{
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Name: vol.Name,
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Created: vol.Created,
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})
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}
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sort.Sort(byBucketName(bucketInfos))
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return bucketInfos, nil
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2016-04-29 23:24:10 +02:00
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}
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// DeleteBucket - delete a bucket.
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func (fs fsObjects) DeleteBucket(bucket string) error {
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2016-05-21 05:48:47 +02:00
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// Verify if bucket is valid.
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if !IsValidBucketName(bucket) {
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2016-08-25 18:39:01 +02:00
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return traceError(BucketNameInvalid{Bucket: bucket})
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2016-05-21 05:48:47 +02:00
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}
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2016-07-12 10:01:47 +02:00
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// Attempt to delete regular bucket.
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2016-05-21 05:48:47 +02:00
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if err := fs.storage.DeleteVol(bucket); err != nil {
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2016-08-25 18:39:01 +02:00
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return toObjectErr(traceError(err), bucket)
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2016-05-21 05:48:47 +02:00
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}
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2016-07-12 10:01:47 +02:00
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// Cleanup all the previously incomplete multiparts.
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2016-09-15 01:41:39 +02:00
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if err := cleanupDir(fs.storage, path.Join(minioMetaBucket, mpartMetaPrefix), bucket); err != nil && errorCause(err) != errVolumeNotFound {
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2016-07-12 10:01:47 +02:00
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return toObjectErr(err, bucket)
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}
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2016-05-21 05:48:47 +02:00
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return nil
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2016-04-29 23:24:10 +02:00
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}
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/// Object Operations
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// GetObject - get an object.
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2016-06-25 12:03:27 +02:00
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func (fs fsObjects) GetObject(bucket, object string, offset int64, length int64, writer io.Writer) (err error) {
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2016-04-29 23:24:10 +02:00
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// Verify if bucket is valid.
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if !IsValidBucketName(bucket) {
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2016-08-25 18:39:01 +02:00
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return traceError(BucketNameInvalid{Bucket: bucket})
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2016-05-08 10:58:05 +02:00
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}
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2016-04-29 23:24:10 +02:00
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// Verify if object is valid.
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if !IsValidObjectName(object) {
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2016-08-25 18:39:01 +02:00
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return traceError(ObjectNameInvalid{Bucket: bucket, Object: object})
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2016-04-29 23:24:10 +02:00
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}
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2016-07-07 10:30:34 +02:00
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// Offset and length cannot be negative.
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if offset < 0 || length < 0 {
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2016-08-25 18:39:01 +02:00
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return toObjectErr(traceError(errUnexpected), bucket, object)
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2016-07-07 10:30:34 +02:00
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}
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2016-07-08 16:46:49 +02:00
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// Writer cannot be nil.
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if writer == nil {
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2016-08-25 18:39:01 +02:00
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return toObjectErr(traceError(errUnexpected), bucket, object)
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2016-07-08 16:46:49 +02:00
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}
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2016-07-08 04:49:45 +02:00
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2016-07-08 16:46:49 +02:00
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// Stat the file to get file size.
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2016-07-08 04:49:45 +02:00
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fi, err := fs.storage.StatFile(bucket, object)
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if err != nil {
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2016-08-25 18:39:01 +02:00
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return toObjectErr(traceError(err), bucket, object)
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2016-07-08 04:49:45 +02:00
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}
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2016-07-08 16:46:49 +02:00
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// Reply back invalid range if the input offset and length fall out of range.
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if offset > fi.Size || length > fi.Size {
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2016-08-25 18:39:01 +02:00
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return traceError(InvalidRange{offset, length, fi.Size})
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2016-07-08 16:46:49 +02:00
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}
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// Reply if we have inputs with offset and length falling out of file size range.
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if offset+length > fi.Size {
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2016-08-25 18:39:01 +02:00
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return traceError(InvalidRange{offset, length, fi.Size})
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2016-07-08 04:49:45 +02:00
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}
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2016-10-10 19:20:04 +02:00
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// get a random ID for lock instrumentation.
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opsID := getOpsID()
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// Lock the object before reading.
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nsMutex.RLock(bucket, object, opsID)
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defer nsMutex.RUnlock(bucket, object, opsID)
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2016-05-29 00:13:15 +02:00
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var totalLeft = length
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2016-07-06 05:59:54 +02:00
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bufSize := int64(readSizeV1)
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if length > 0 && bufSize > length {
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bufSize = length
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}
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// Allocate a staging buffer.
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buf := make([]byte, int(bufSize))
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2016-07-09 22:01:32 +02:00
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for {
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2016-06-24 11:06:23 +02:00
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// Figure out the right size for the buffer.
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2016-07-06 05:59:54 +02:00
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curLeft := bufSize
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if totalLeft < bufSize {
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2016-06-25 12:03:27 +02:00
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curLeft = totalLeft
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2016-05-29 00:13:15 +02:00
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}
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2016-06-24 11:06:23 +02:00
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// Reads the file at offset.
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2016-06-25 12:03:27 +02:00
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nr, er := fs.storage.ReadFile(bucket, object, offset, buf[:curLeft])
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if nr > 0 {
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// Write to response writer.
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nw, ew := writer.Write(buf[0:nr])
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if nw > 0 {
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// Decrement whats left to write.
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totalLeft -= int64(nw)
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// Progress the offset
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offset += int64(nw)
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}
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if ew != nil {
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2016-08-25 18:39:01 +02:00
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err = traceError(ew)
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2016-06-25 12:03:27 +02:00
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break
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}
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if nr != int64(nw) {
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2016-08-25 18:39:01 +02:00
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err = traceError(io.ErrShortWrite)
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2016-06-25 12:03:27 +02:00
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break
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}
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2016-05-29 00:13:15 +02:00
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}
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2016-06-25 12:03:27 +02:00
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if er == io.EOF || er == io.ErrUnexpectedEOF {
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break
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2016-05-29 00:13:15 +02:00
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}
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2016-06-25 12:03:27 +02:00
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if er != nil {
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2016-08-25 18:39:01 +02:00
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err = traceError(er)
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2016-06-25 12:03:27 +02:00
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break
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}
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2016-07-09 22:01:32 +02:00
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if totalLeft == 0 {
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break
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}
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2016-06-25 12:03:27 +02:00
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}
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// Returns any error.
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return toObjectErr(err, bucket, object)
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2016-04-29 23:24:10 +02:00
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}
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2016-09-02 21:18:35 +02:00
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// getObjectInfo - get object info.
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func (fs fsObjects) getObjectInfo(bucket, object string) (ObjectInfo, error) {
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2016-04-29 23:24:10 +02:00
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fi, err := fs.storage.StatFile(bucket, object)
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if err != nil {
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2016-08-25 18:39:01 +02:00
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return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
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2016-04-29 23:24:10 +02:00
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}
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2016-08-31 22:42:57 +02:00
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fsMeta, err := readFSMetadata(fs.storage, minioMetaBucket, path.Join(bucketMetaPrefix, bucket, object, fsMetaJSONFile))
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2016-08-25 18:39:01 +02:00
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// Ignore error if the metadata file is not found, other errors must be returned.
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2016-09-06 22:30:05 +02:00
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|
|
if err != nil && errorCause(err) != errFileNotFound {
|
2016-07-22 02:31:14 +02:00
|
|
|
return ObjectInfo{}, toObjectErr(err, bucket, object)
|
|
|
|
}
|
2016-06-17 06:42:02 +02:00
|
|
|
|
2016-07-23 05:31:45 +02:00
|
|
|
if len(fsMeta.Meta) == 0 {
|
|
|
|
fsMeta.Meta = make(map[string]string)
|
|
|
|
}
|
|
|
|
|
2016-06-17 06:42:02 +02:00
|
|
|
// Guess content-type from the extension if possible.
|
2016-07-23 05:31:45 +02:00
|
|
|
if fsMeta.Meta["content-type"] == "" {
|
2016-08-17 22:26:08 +02:00
|
|
|
if objectExt := path.Ext(object); objectExt != "" {
|
2016-07-22 02:31:14 +02:00
|
|
|
if content, ok := mimedb.DB[strings.ToLower(strings.TrimPrefix(objectExt, "."))]; ok {
|
2016-07-23 05:31:45 +02:00
|
|
|
fsMeta.Meta["content-type"] = content.ContentType
|
2016-07-22 02:31:14 +02:00
|
|
|
}
|
2016-04-29 23:24:10 +02:00
|
|
|
}
|
|
|
|
}
|
2016-06-17 06:42:02 +02:00
|
|
|
|
2016-07-22 02:31:14 +02:00
|
|
|
// Guess content-type from the extension if possible.
|
2016-04-29 23:24:10 +02:00
|
|
|
return ObjectInfo{
|
2016-07-22 02:31:14 +02:00
|
|
|
Bucket: bucket,
|
|
|
|
Name: object,
|
|
|
|
ModTime: fi.ModTime,
|
|
|
|
Size: fi.Size,
|
|
|
|
IsDir: fi.Mode.IsDir(),
|
|
|
|
MD5Sum: fsMeta.Meta["md5Sum"],
|
2016-07-23 05:31:45 +02:00
|
|
|
ContentType: fsMeta.Meta["content-type"],
|
2016-07-22 02:31:14 +02:00
|
|
|
ContentEncoding: fsMeta.Meta["content-encoding"],
|
|
|
|
UserDefined: fsMeta.Meta,
|
2016-04-29 23:24:10 +02:00
|
|
|
}, nil
|
|
|
|
}
|
|
|
|
|
2016-09-02 21:18:35 +02:00
|
|
|
// GetObjectInfo - get object info.
|
|
|
|
func (fs fsObjects) GetObjectInfo(bucket, object string) (ObjectInfo, error) {
|
|
|
|
// Verify if bucket is valid.
|
|
|
|
if !IsValidBucketName(bucket) {
|
|
|
|
return ObjectInfo{}, traceError(BucketNameInvalid{Bucket: bucket})
|
|
|
|
}
|
|
|
|
// Verify if object is valid.
|
|
|
|
if !IsValidObjectName(object) {
|
|
|
|
return ObjectInfo{}, traceError(ObjectNameInvalid{Bucket: bucket, Object: object})
|
|
|
|
}
|
|
|
|
return fs.getObjectInfo(bucket, object)
|
|
|
|
}
|
|
|
|
|
2016-05-03 01:57:31 +02:00
|
|
|
// PutObject - create an object.
|
2016-10-03 00:51:49 +02:00
|
|
|
func (fs fsObjects) PutObject(bucket string, object string, size int64, data io.Reader, metadata map[string]string, sha256sum string) (objInfo ObjectInfo, err error) {
|
2016-05-13 20:52:36 +02:00
|
|
|
// Verify if bucket is valid.
|
|
|
|
if !IsValidBucketName(bucket) {
|
2016-09-02 21:18:35 +02:00
|
|
|
return ObjectInfo{}, traceError(BucketNameInvalid{Bucket: bucket})
|
2016-05-13 20:52:36 +02:00
|
|
|
}
|
|
|
|
if !IsValidObjectName(object) {
|
2016-09-02 21:18:35 +02:00
|
|
|
return ObjectInfo{}, traceError(ObjectNameInvalid{
|
2016-05-13 20:52:36 +02:00
|
|
|
Bucket: bucket,
|
|
|
|
Object: object,
|
2016-08-25 18:39:01 +02:00
|
|
|
})
|
2016-05-13 20:52:36 +02:00
|
|
|
}
|
2016-08-17 22:26:08 +02:00
|
|
|
// No metadata is set, allocate a new one.
|
|
|
|
if metadata == nil {
|
|
|
|
metadata = make(map[string]string)
|
|
|
|
}
|
2016-05-13 20:52:36 +02:00
|
|
|
|
2016-05-29 09:42:09 +02:00
|
|
|
uniqueID := getUUID()
|
|
|
|
|
2016-06-09 07:00:31 +02:00
|
|
|
// Uploaded object will first be written to the temporary location which will eventually
|
|
|
|
// be renamed to the actual location. It is first written to the temporary location
|
|
|
|
// so that cleaning it up will be easy if the server goes down.
|
2016-05-29 09:42:09 +02:00
|
|
|
tempObj := path.Join(tmpMetaPrefix, uniqueID)
|
2016-05-13 20:52:36 +02:00
|
|
|
|
|
|
|
// Initialize md5 writer.
|
|
|
|
md5Writer := md5.New()
|
|
|
|
|
2016-10-03 00:51:49 +02:00
|
|
|
hashWriters := []io.Writer{md5Writer}
|
|
|
|
|
|
|
|
var sha256Writer hash.Hash
|
|
|
|
if sha256sum != "" {
|
|
|
|
sha256Writer = sha256.New()
|
|
|
|
hashWriters = append(hashWriters, sha256Writer)
|
|
|
|
}
|
|
|
|
multiWriter := io.MultiWriter(hashWriters...)
|
|
|
|
|
2016-07-05 10:04:50 +02:00
|
|
|
// Limit the reader to its provided size if specified.
|
|
|
|
var limitDataReader io.Reader
|
|
|
|
if size > 0 {
|
|
|
|
// This is done so that we can avoid erroneous clients sending more data than the set content size.
|
|
|
|
limitDataReader = io.LimitReader(data, size)
|
|
|
|
} else {
|
|
|
|
// else we read till EOF.
|
|
|
|
limitDataReader = data
|
|
|
|
}
|
|
|
|
|
2016-05-29 00:13:15 +02:00
|
|
|
if size == 0 {
|
|
|
|
// For size 0 we write a 0byte file.
|
2016-09-02 21:18:35 +02:00
|
|
|
err = fs.storage.AppendFile(minioMetaBucket, tempObj, []byte(""))
|
2016-05-29 00:13:15 +02:00
|
|
|
if err != nil {
|
2016-09-02 21:18:35 +02:00
|
|
|
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
|
2016-05-13 20:52:36 +02:00
|
|
|
}
|
|
|
|
} else {
|
2016-07-19 04:06:48 +02:00
|
|
|
// Allocate a buffer to Read() from request body
|
2016-07-06 05:59:54 +02:00
|
|
|
bufSize := int64(readSizeV1)
|
|
|
|
if size > 0 && bufSize > size {
|
|
|
|
bufSize = size
|
|
|
|
}
|
|
|
|
buf := make([]byte, int(bufSize))
|
2016-10-03 00:51:49 +02:00
|
|
|
teeReader := io.TeeReader(limitDataReader, multiWriter)
|
2016-09-02 21:18:35 +02:00
|
|
|
var bytesWritten int64
|
|
|
|
bytesWritten, err = fsCreateFile(fs.storage, teeReader, buf, minioMetaBucket, tempObj)
|
2016-07-19 04:06:48 +02:00
|
|
|
if err != nil {
|
2016-10-10 10:42:32 +02:00
|
|
|
errorIf(err, "Failed to create object %s/%s", bucket, object)
|
2016-07-19 04:06:48 +02:00
|
|
|
fs.storage.DeleteFile(minioMetaBucket, tempObj)
|
2016-10-10 10:42:32 +02:00
|
|
|
return ObjectInfo{}, toObjectErr(err, bucket, object)
|
2016-07-19 04:06:48 +02:00
|
|
|
}
|
2016-07-05 10:04:50 +02:00
|
|
|
|
2016-07-19 04:06:48 +02:00
|
|
|
// Should return IncompleteBody{} error when reader has fewer
|
|
|
|
// bytes than specified in request header.
|
|
|
|
if bytesWritten < size {
|
|
|
|
fs.storage.DeleteFile(minioMetaBucket, tempObj)
|
2016-09-02 21:18:35 +02:00
|
|
|
return ObjectInfo{}, traceError(IncompleteBody{})
|
2016-05-13 20:52:36 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
newMD5Hex := hex.EncodeToString(md5Writer.Sum(nil))
|
2016-08-17 22:26:08 +02:00
|
|
|
// Update the md5sum if not set with the newly calculated one.
|
|
|
|
if len(metadata["md5Sum"]) == 0 {
|
|
|
|
metadata["md5Sum"] = newMD5Hex
|
2016-05-13 20:52:36 +02:00
|
|
|
}
|
2016-07-05 10:04:50 +02:00
|
|
|
|
2016-08-17 22:26:08 +02:00
|
|
|
// md5Hex representation.
|
|
|
|
md5Hex := metadata["md5Sum"]
|
2016-05-13 20:52:36 +02:00
|
|
|
if md5Hex != "" {
|
|
|
|
if newMD5Hex != md5Hex {
|
2016-07-05 10:04:50 +02:00
|
|
|
// MD5 mismatch, delete the temporary object.
|
|
|
|
fs.storage.DeleteFile(minioMetaBucket, tempObj)
|
|
|
|
// Returns md5 mismatch.
|
2016-09-02 21:18:35 +02:00
|
|
|
return ObjectInfo{}, traceError(BadDigest{md5Hex, newMD5Hex})
|
2016-05-13 20:52:36 +02:00
|
|
|
}
|
|
|
|
}
|
2016-05-29 00:13:15 +02:00
|
|
|
|
2016-10-03 00:51:49 +02:00
|
|
|
if sha256sum != "" {
|
|
|
|
newSHA256sum := hex.EncodeToString(sha256Writer.Sum(nil))
|
|
|
|
if newSHA256sum != sha256sum {
|
|
|
|
// SHA256 mismatch, delete the temporary object.
|
|
|
|
fs.storage.DeleteFile(minioMetaBucket, tempObj)
|
|
|
|
return ObjectInfo{}, traceError(SHA256Mismatch{})
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-10-10 19:20:04 +02:00
|
|
|
// get a random ID for lock instrumentation.
|
|
|
|
opsID := getOpsID()
|
|
|
|
|
|
|
|
// Lock the object before comitting the object.
|
|
|
|
nsMutex.RLock(bucket, object, opsID)
|
|
|
|
defer nsMutex.RUnlock(bucket, object, opsID)
|
|
|
|
|
2016-07-05 10:04:50 +02:00
|
|
|
// Entire object was written to the temp location, now it's safe to rename it to the actual location.
|
2016-09-02 21:18:35 +02:00
|
|
|
err = fs.storage.RenameFile(minioMetaBucket, tempObj, bucket, object)
|
2016-05-13 20:52:36 +02:00
|
|
|
if err != nil {
|
2016-09-02 21:18:35 +02:00
|
|
|
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
|
2016-05-13 20:52:36 +02:00
|
|
|
}
|
|
|
|
|
2016-07-22 02:31:14 +02:00
|
|
|
// Save additional metadata only if extended headers such as "X-Amz-Meta-" are set.
|
|
|
|
if hasExtendedHeader(metadata) {
|
|
|
|
// Initialize `fs.json` values.
|
|
|
|
fsMeta := newFSMetaV1()
|
|
|
|
fsMeta.Meta = metadata
|
|
|
|
|
|
|
|
fsMetaPath := path.Join(bucketMetaPrefix, bucket, object, fsMetaJSONFile)
|
2016-08-31 22:42:57 +02:00
|
|
|
if err = writeFSMetadata(fs.storage, minioMetaBucket, fsMetaPath, fsMeta); err != nil {
|
2016-09-02 21:18:35 +02:00
|
|
|
return ObjectInfo{}, toObjectErr(traceError(err), bucket, object)
|
2016-07-22 02:31:14 +02:00
|
|
|
}
|
|
|
|
}
|
2016-09-02 21:18:35 +02:00
|
|
|
objInfo, err = fs.getObjectInfo(bucket, object)
|
|
|
|
if err == nil {
|
|
|
|
// If MINIO_ENABLE_FSMETA is not enabled objInfo.MD5Sum will be empty.
|
|
|
|
objInfo.MD5Sum = newMD5Hex
|
|
|
|
}
|
|
|
|
return objInfo, err
|
2016-04-29 23:24:10 +02:00
|
|
|
}
|
|
|
|
|
2016-07-22 02:31:14 +02:00
|
|
|
// DeleteObject - deletes an object from a bucket, this operation is destructive
|
|
|
|
// and there are no rollbacks supported.
|
2016-04-29 23:24:10 +02:00
|
|
|
func (fs fsObjects) DeleteObject(bucket, object string) error {
|
|
|
|
// Verify if bucket is valid.
|
|
|
|
if !IsValidBucketName(bucket) {
|
2016-08-25 18:39:01 +02:00
|
|
|
return traceError(BucketNameInvalid{Bucket: bucket})
|
2016-04-29 23:24:10 +02:00
|
|
|
}
|
|
|
|
if !IsValidObjectName(object) {
|
2016-08-25 18:39:01 +02:00
|
|
|
return traceError(ObjectNameInvalid{Bucket: bucket, Object: object})
|
2016-04-29 23:24:10 +02:00
|
|
|
}
|
2016-10-10 19:20:04 +02:00
|
|
|
// get a random ID for lock instrumentation.
|
|
|
|
opsID := getOpsID()
|
|
|
|
|
|
|
|
// Lock the object before deleting so that an in progress GetObject does not return
|
|
|
|
// corrupt data or there is no race with a PutObject.
|
|
|
|
nsMutex.RLock(bucket, object, opsID)
|
|
|
|
defer nsMutex.RUnlock(bucket, object, opsID)
|
|
|
|
|
2016-08-16 19:05:08 +02:00
|
|
|
err := fs.storage.DeleteFile(minioMetaBucket, path.Join(bucketMetaPrefix, bucket, object, fsMetaJSONFile))
|
2016-07-22 02:31:14 +02:00
|
|
|
if err != nil && err != errFileNotFound {
|
2016-08-25 18:39:01 +02:00
|
|
|
return toObjectErr(traceError(err), bucket, object)
|
2016-07-22 02:31:14 +02:00
|
|
|
}
|
|
|
|
if err = fs.storage.DeleteFile(bucket, object); err != nil {
|
2016-08-25 18:39:01 +02:00
|
|
|
return toObjectErr(traceError(err), bucket, object)
|
2016-04-29 23:24:10 +02:00
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2016-08-17 22:26:08 +02:00
|
|
|
// ListObjects - list all objects at prefix upto maxKeys., optionally delimited by '/'. Maintains the list pool
|
|
|
|
// state for future re-entrant list requests.
|
|
|
|
func (fs fsObjects) ListObjects(bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsInfo, error) {
|
2016-05-26 23:43:17 +02:00
|
|
|
// Convert entry to FileInfo
|
|
|
|
entryToFileInfo := func(entry string) (fileInfo FileInfo, err error) {
|
|
|
|
if strings.HasSuffix(entry, slashSeparator) {
|
|
|
|
// Object name needs to be full path.
|
|
|
|
fileInfo.Name = entry
|
|
|
|
fileInfo.Mode = os.ModeDir
|
|
|
|
return
|
|
|
|
}
|
|
|
|
if fileInfo, err = fs.storage.StatFile(bucket, entry); err != nil {
|
2016-08-25 18:39:01 +02:00
|
|
|
return FileInfo{}, traceError(err)
|
2016-05-26 23:43:17 +02:00
|
|
|
}
|
2016-08-31 22:42:57 +02:00
|
|
|
fsMeta, mErr := readFSMetadata(fs.storage, minioMetaBucket, path.Join(bucketMetaPrefix, bucket, entry, fsMetaJSONFile))
|
2016-09-06 22:30:05 +02:00
|
|
|
if mErr != nil && errorCause(mErr) != errFileNotFound {
|
2016-08-25 18:39:01 +02:00
|
|
|
return FileInfo{}, traceError(mErr)
|
2016-08-17 22:26:08 +02:00
|
|
|
}
|
|
|
|
if len(fsMeta.Meta) == 0 {
|
|
|
|
fsMeta.Meta = make(map[string]string)
|
|
|
|
}
|
2016-05-26 23:43:17 +02:00
|
|
|
// Object name needs to be full path.
|
|
|
|
fileInfo.Name = entry
|
2016-08-17 22:26:08 +02:00
|
|
|
fileInfo.MD5Sum = fsMeta.Meta["md5Sum"]
|
2016-05-26 23:43:17 +02:00
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2016-05-21 05:48:47 +02:00
|
|
|
// Verify if bucket is valid.
|
|
|
|
if !IsValidBucketName(bucket) {
|
2016-08-25 18:39:01 +02:00
|
|
|
return ListObjectsInfo{}, traceError(BucketNameInvalid{Bucket: bucket})
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
// Verify if bucket exists.
|
2016-09-16 22:06:49 +02:00
|
|
|
if !fs.isBucketExist(bucket) {
|
2016-08-25 18:39:01 +02:00
|
|
|
return ListObjectsInfo{}, traceError(BucketNotFound{Bucket: bucket})
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
if !IsValidObjectPrefix(prefix) {
|
2016-08-25 18:39:01 +02:00
|
|
|
return ListObjectsInfo{}, traceError(ObjectNameInvalid{Bucket: bucket, Object: prefix})
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
// Verify if delimiter is anything other than '/', which we do not support.
|
|
|
|
if delimiter != "" && delimiter != slashSeparator {
|
2016-08-25 18:39:01 +02:00
|
|
|
return ListObjectsInfo{}, traceError(UnsupportedDelimiter{
|
2016-05-21 05:48:47 +02:00
|
|
|
Delimiter: delimiter,
|
2016-08-25 18:39:01 +02:00
|
|
|
})
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
// Verify if marker has prefix.
|
|
|
|
if marker != "" {
|
|
|
|
if !strings.HasPrefix(marker, prefix) {
|
2016-08-25 18:39:01 +02:00
|
|
|
return ListObjectsInfo{}, traceError(InvalidMarkerPrefixCombination{
|
2016-05-21 05:48:47 +02:00
|
|
|
Marker: marker,
|
|
|
|
Prefix: prefix,
|
2016-08-25 18:39:01 +02:00
|
|
|
})
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// With max keys of zero we have reached eof, return right here.
|
|
|
|
if maxKeys == 0 {
|
|
|
|
return ListObjectsInfo{}, nil
|
|
|
|
}
|
|
|
|
|
2016-05-28 00:43:51 +02:00
|
|
|
// For delimiter and prefix as '/' we do not list anything at all
|
|
|
|
// since according to s3 spec we stop at the 'delimiter'
|
|
|
|
// along // with the prefix. On a flat namespace with 'prefix'
|
|
|
|
// as '/' we don't have any entries, since all the keys are
|
|
|
|
// of form 'keyName/...'
|
|
|
|
if delimiter == slashSeparator && prefix == slashSeparator {
|
|
|
|
return ListObjectsInfo{}, nil
|
|
|
|
}
|
|
|
|
|
2016-05-21 05:48:47 +02:00
|
|
|
// Over flowing count - reset to maxObjectList.
|
|
|
|
if maxKeys < 0 || maxKeys > maxObjectList {
|
|
|
|
maxKeys = maxObjectList
|
|
|
|
}
|
|
|
|
|
|
|
|
// Default is recursive, if delimiter is set then list non recursive.
|
|
|
|
recursive := true
|
|
|
|
if delimiter == slashSeparator {
|
|
|
|
recursive = false
|
|
|
|
}
|
|
|
|
|
2016-08-17 20:36:33 +02:00
|
|
|
heal := false // true only for xl.ListObjectsHeal()
|
|
|
|
walkResultCh, endWalkCh := fs.listPool.Release(listParams{bucket, recursive, marker, prefix, heal})
|
2016-06-25 01:41:57 +02:00
|
|
|
if walkResultCh == nil {
|
|
|
|
endWalkCh = make(chan struct{})
|
2016-07-18 00:16:52 +02:00
|
|
|
isLeaf := func(bucket, object string) bool {
|
|
|
|
// bucket argument is unused as we don't need to StatFile
|
|
|
|
// to figure if it's a file, just need to check that the
|
|
|
|
// object string does not end with "/".
|
2016-05-26 23:43:17 +02:00
|
|
|
return !strings.HasSuffix(object, slashSeparator)
|
2016-07-18 00:16:52 +02:00
|
|
|
}
|
2016-09-15 22:43:40 +02:00
|
|
|
listDir := listDirFactory(isLeaf, fsTreeWalkIgnoredErrs, fs.storage)
|
2016-07-18 00:16:52 +02:00
|
|
|
walkResultCh = startTreeWalk(bucket, prefix, marker, recursive, listDir, isLeaf, endWalkCh)
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
var fileInfos []FileInfo
|
|
|
|
var eof bool
|
|
|
|
var nextMarker string
|
|
|
|
for i := 0; i < maxKeys; {
|
2016-06-25 01:41:57 +02:00
|
|
|
walkResult, ok := <-walkResultCh
|
2016-05-21 05:48:47 +02:00
|
|
|
if !ok {
|
|
|
|
// Closed channel.
|
|
|
|
eof = true
|
|
|
|
break
|
|
|
|
}
|
|
|
|
// For any walk error return right away.
|
|
|
|
if walkResult.err != nil {
|
|
|
|
// File not found is a valid case.
|
2016-08-25 18:39:01 +02:00
|
|
|
if errorCause(walkResult.err) == errFileNotFound {
|
2016-05-21 05:48:47 +02:00
|
|
|
return ListObjectsInfo{}, nil
|
|
|
|
}
|
|
|
|
return ListObjectsInfo{}, toObjectErr(walkResult.err, bucket, prefix)
|
|
|
|
}
|
2016-05-26 23:43:17 +02:00
|
|
|
fileInfo, err := entryToFileInfo(walkResult.entry)
|
|
|
|
if err != nil {
|
|
|
|
return ListObjectsInfo{}, nil
|
|
|
|
}
|
2016-05-21 05:48:47 +02:00
|
|
|
nextMarker = fileInfo.Name
|
|
|
|
fileInfos = append(fileInfos, fileInfo)
|
|
|
|
if walkResult.end {
|
|
|
|
eof = true
|
|
|
|
break
|
|
|
|
}
|
|
|
|
i++
|
|
|
|
}
|
2016-08-17 20:36:33 +02:00
|
|
|
params := listParams{bucket, recursive, nextMarker, prefix, heal}
|
2016-05-21 05:48:47 +02:00
|
|
|
if !eof {
|
2016-06-25 01:41:57 +02:00
|
|
|
fs.listPool.Set(params, walkResultCh, endWalkCh)
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
result := ListObjectsInfo{IsTruncated: !eof}
|
|
|
|
for _, fileInfo := range fileInfos {
|
2016-07-25 00:52:12 +02:00
|
|
|
result.NextMarker = fileInfo.Name
|
|
|
|
if fileInfo.Mode.IsDir() {
|
|
|
|
result.Prefixes = append(result.Prefixes, fileInfo.Name)
|
|
|
|
continue
|
2016-05-21 05:48:47 +02:00
|
|
|
}
|
|
|
|
result.Objects = append(result.Objects, ObjectInfo{
|
|
|
|
Name: fileInfo.Name,
|
|
|
|
ModTime: fileInfo.ModTime,
|
|
|
|
Size: fileInfo.Size,
|
2016-07-20 21:40:20 +02:00
|
|
|
MD5Sum: fileInfo.MD5Sum,
|
2016-05-21 05:48:47 +02:00
|
|
|
IsDir: false,
|
|
|
|
})
|
|
|
|
}
|
|
|
|
return result, nil
|
|
|
|
}
|
|
|
|
|
2016-08-17 20:36:33 +02:00
|
|
|
// HealObject - no-op for fs. Valid only for XL.
|
|
|
|
func (fs fsObjects) HealObject(bucket, object string) error {
|
2016-08-25 18:39:01 +02:00
|
|
|
return traceError(NotImplemented{})
|
2016-08-17 20:36:33 +02:00
|
|
|
}
|
|
|
|
|
2016-10-15 04:57:40 +02:00
|
|
|
// HealBucket - no-op for fs, Valid only for XL.
|
|
|
|
func (fs fsObjects) HealBucket(bucket string) error {
|
|
|
|
return traceError(NotImplemented{})
|
|
|
|
}
|
|
|
|
|
|
|
|
// ListObjectsHeal - list all objects to be healed. Valid only for XL
|
2016-08-17 20:36:33 +02:00
|
|
|
func (fs fsObjects) ListObjectsHeal(bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsInfo, error) {
|
2016-08-25 18:39:01 +02:00
|
|
|
return ListObjectsInfo{}, traceError(NotImplemented{})
|
2016-08-17 20:36:33 +02:00
|
|
|
}
|