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132 lines
3.3 KiB
132 lines
3.3 KiB
/*
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* Minio Cloud Storage, (C) 2015-2016 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 fs
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import (
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"fmt"
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"net/url"
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"os"
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"path/filepath"
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"strings"
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"github.com/minio/minio/pkg/probe"
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)
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// ListObjects - lists all objects for a given prefix, returns up to
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// maxKeys number of objects per call.
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func (fs Filesystem) ListObjects(bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsResult, *probe.Error) {
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result := ListObjectsResult{}
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// Input validation.
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if !IsValidBucketName(bucket) {
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return result, probe.NewError(BucketNameInvalid{Bucket: bucket})
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}
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bucket = fs.denormalizeBucket(bucket)
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if status, err := isDirExist(filepath.Join(fs.path, bucket)); !status {
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if err == nil {
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return result, probe.NewError(BucketNotFound{Bucket: bucket})
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} else if os.IsNotExist(err) {
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return result, probe.NewError(BucketNotFound{Bucket: bucket})
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} else {
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return result, probe.NewError(err)
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}
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}
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if delimiter != "" && delimiter != "/" {
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return result, probe.NewError(fmt.Errorf("delimiter '%s' is not supported", delimiter))
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}
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if marker != "" {
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if markerUnescaped, err := url.QueryUnescape(marker); err == nil {
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marker = markerUnescaped
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} else {
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return result, probe.NewError(err)
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}
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if !strings.HasPrefix(marker, prefix) {
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return result, probe.NewError(fmt.Errorf("marker '%s' and prefix '%s' do not match", marker, prefix))
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}
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}
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if maxKeys <= 0 || maxKeys > listObjectsLimit {
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maxKeys = listObjectsLimit
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}
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bucketDir := filepath.Join(fs.path, bucket)
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recursive := true
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skipDir := true
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if delimiter == "/" {
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skipDir = false
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recursive = false
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}
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prefixDir := filepath.Dir(filepath.FromSlash(prefix))
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rootDir := filepath.Join(bucketDir, prefixDir)
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objectInfoCh := fs.popListObjectCh(ListObjectParams{bucket, delimiter, marker, prefix})
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if objectInfoCh == nil {
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ch := treeWalk(rootDir, bucketDir, recursive)
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objectInfoCh = &ch
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}
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nextMarker := ""
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for i := 0; i < maxKeys; {
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objInfo, ok := objectInfoCh.Read()
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if !ok {
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// closed channel
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return result, nil
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}
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if objInfo.Err != nil {
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return ListObjectsResult{}, probe.NewError(objInfo.Err)
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}
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if strings.Contains(objInfo.Name, "$multiparts") || strings.Contains(objInfo.Name, "$tmpobject") {
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continue
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}
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if objInfo.IsDir && skipDir {
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continue
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}
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// Add the bucket.
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objInfo.Bucket = bucket
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if strings.HasPrefix(objInfo.Name, prefix) {
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if objInfo.Name > marker {
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if objInfo.IsDir {
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result.Prefixes = append(result.Prefixes, objInfo.Name)
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} else {
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result.Objects = append(result.Objects, objInfo)
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}
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nextMarker = objInfo.Name
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i++
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}
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}
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}
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if !objectInfoCh.IsClosed() {
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result.IsTruncated = true
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result.NextMarker = nextMarker
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fs.pushListObjectCh(ListObjectParams{bucket, delimiter, nextMarker, prefix}, *objectInfoCh)
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}
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return result, nil
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}
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