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c70bc2209e
When list object is invoked, it creates a goroutine if not available for given parameters else uses existing goroutine. These goroutines are alive for 15 seconds for further continuation list object request else they exit. Fixes #1076
137 lines
3.3 KiB
Go
137 lines
3.3 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015 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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"os"
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"path/filepath"
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"sync"
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"time"
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"github.com/minio/minio/pkg/probe"
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)
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// ListObjectParams - list object params used for list object map
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type ListObjectParams struct {
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bucket string
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delimiter string
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marker string
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prefix string
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}
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// Filesystem - local variables
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type Filesystem struct {
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path string
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minFreeDisk int64
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rwLock *sync.RWMutex
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multiparts *Multiparts
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listObjectMap map[ListObjectParams][]ObjectInfoChannel
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listObjectMapMutex *sync.Mutex
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}
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func (fs *Filesystem) pushListObjectCh(params ListObjectParams, ch ObjectInfoChannel) {
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fs.listObjectMapMutex.Lock()
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defer fs.listObjectMapMutex.Unlock()
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channels := []ObjectInfoChannel{ch}
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if _, ok := fs.listObjectMap[params]; ok {
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channels = append(fs.listObjectMap[params], ch)
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}
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fs.listObjectMap[params] = channels
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}
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func (fs *Filesystem) popListObjectCh(params ListObjectParams) *ObjectInfoChannel {
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fs.listObjectMapMutex.Lock()
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defer fs.listObjectMapMutex.Unlock()
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if channels, ok := fs.listObjectMap[params]; ok {
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for i, channel := range channels {
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if !channel.IsTimedOut() {
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chs := channels[i+1:]
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if len(chs) > 0 {
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fs.listObjectMap[params] = chs
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} else {
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delete(fs.listObjectMap, params)
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}
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return &channel
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}
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}
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// As all channels are timed out, delete the map entry
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delete(fs.listObjectMap, params)
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}
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return nil
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}
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// MultipartSession holds active session information
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type MultipartSession struct {
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TotalParts int
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ObjectName string
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UploadID string
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Initiated time.Time
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Parts []PartMetadata
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}
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// Multiparts collection of many parts
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type Multiparts struct {
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Version string `json:"version"`
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ActiveSession map[string]*MultipartSession `json:"activeSessions"`
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}
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// New instantiate a new donut
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func New(rootPath string, minFreeDisk int64) (Filesystem, *probe.Error) {
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setFSMultipartsMetadataPath(filepath.Join(rootPath, "$multiparts-session.json"))
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var err *probe.Error
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// load multiparts session from disk
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var multiparts *Multiparts
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multiparts, err = loadMultipartsSession()
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if err != nil {
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if os.IsNotExist(err.ToGoError()) {
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multiparts = &Multiparts{
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Version: "1",
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ActiveSession: make(map[string]*MultipartSession),
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}
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if err = saveMultipartsSession(*multiparts); err != nil {
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return Filesystem{}, err.Trace()
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}
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} else {
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return Filesystem{}, err.Trace()
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}
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}
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fs := Filesystem{
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rwLock: &sync.RWMutex{},
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}
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fs.path = rootPath
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fs.multiparts = multiparts
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/// Defaults
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// minium free disk required for i/o operations to succeed.
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fs.minFreeDisk = minFreeDisk
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fs.listObjectMap = make(map[ListObjectParams][]ObjectInfoChannel)
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fs.listObjectMapMutex = &sync.Mutex{}
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// Return here.
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return fs, nil
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}
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