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Copy pathfs.go
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141 lines (118 loc) · 3.42 KB
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Copy pathfs.go
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141 lines (118 loc) · 3.42 KB
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/*
* Minio Cloud Storage, (C) 2015, 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 (
"os"
"path/filepath"
"sync"
"time"
"github.com/minio/minio/pkg/probe"
)
// ListObjectParams - list object params used for list object map
type ListObjectParams struct {
bucket string
delimiter string
marker string
prefix string
}
// Filesystem - local variables
type Filesystem struct {
path string
minFreeDisk int64
rwLock *sync.RWMutex
multiparts *Multiparts
listObjectMap map[ListObjectParams][]ObjectInfoChannel
listObjectMapMutex *sync.Mutex
}
func (fs *Filesystem) pushListObjectCh(params ListObjectParams, ch ObjectInfoChannel) {
fs.listObjectMapMutex.Lock()
defer fs.listObjectMapMutex.Unlock()
channels := []ObjectInfoChannel{ch}
if _, ok := fs.listObjectMap[params]; ok {
channels = append(fs.listObjectMap[params], ch)
}
fs.listObjectMap[params] = channels
}
func (fs *Filesystem) popListObjectCh(params ListObjectParams) *ObjectInfoChannel {
fs.listObjectMapMutex.Lock()
defer fs.listObjectMapMutex.Unlock()
if channels, ok := fs.listObjectMap[params]; ok {
for i, channel := range channels {
if !channel.IsTimedOut() {
chs := channels[i+1:]
if len(chs) > 0 {
fs.listObjectMap[params] = chs
} else {
delete(fs.listObjectMap, params)
}
return &channel
}
}
// As all channels are timed out, delete the map entry
delete(fs.listObjectMap, params)
}
return nil
}
// MultipartSession holds active session information
type MultipartSession struct {
TotalParts int
ObjectName string
UploadID string
Initiated time.Time
Parts []PartMetadata
}
// Multiparts collection of many parts
type Multiparts struct {
Version string `json:"version"`
ActiveSession map[string]*MultipartSession `json:"activeSessions"`
}
// newFS instantiate a new filesystem.
func newFS(rootPath string) (ObjectAPI, *probe.Error) {
setFSMultipartsMetadataPath(filepath.Join(rootPath, "$multiparts-session.json"))
var err *probe.Error
// load multiparts session from disk
var multiparts *Multiparts
multiparts, err = loadMultipartsSession()
if err != nil {
if os.IsNotExist(err.ToGoError()) {
multiparts = &Multiparts{
Version: "1",
ActiveSession: make(map[string]*MultipartSession),
}
if err = saveMultipartsSession(*multiparts); err != nil {
return Filesystem{}, err.Trace()
}
} else {
return Filesystem{}, err.Trace()
}
}
fs := &Filesystem{
rwLock: &sync.RWMutex{},
}
fs.path = rootPath
fs.multiparts = multiparts
/// Defaults
// Minium free disk required for i/o operations to succeed.
fs.minFreeDisk = 5
fs.listObjectMap = make(map[ListObjectParams][]ObjectInfoChannel)
fs.listObjectMapMutex = &sync.Mutex{}
// Return here.
return fs, nil
}
// GetRootPath - get root path.
func (fs Filesystem) GetRootPath() string {
return fs.path
}