mirror of
https://github.com/siyuan-note/siyuan.git
synced 2025-05-04 20:32:12 +08:00
109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
// SiYuan - Build Your Eternal Digital Garden
|
|
// Copyright (c) 2020-present, b3log.org
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
package filesys
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"sync"
|
|
|
|
"github.com/88250/gulu"
|
|
"github.com/siyuan-note/filelock"
|
|
"github.com/siyuan-note/siyuan/kernel/util"
|
|
)
|
|
|
|
type DataConf struct {
|
|
Updated int64 `json:"updated"` // 最近一次数据更新时间
|
|
SyncVer int64 `json:"syncVer"` // 同步版本号
|
|
Device string `json:"device"` // 设备 ID
|
|
}
|
|
|
|
var incWorkspaceDataVerLock = sync.Mutex{}
|
|
|
|
func IncWorkspaceDataVer(inc bool, systemID string) {
|
|
incWorkspaceDataVerLock.Lock()
|
|
defer incWorkspaceDataVerLock.Unlock()
|
|
|
|
confPath := filepath.Join(util.DataDir, ".siyuan")
|
|
os.MkdirAll(confPath, 0755)
|
|
confPath = filepath.Join(confPath, "conf.json")
|
|
|
|
var data []byte
|
|
var err error
|
|
now := util.CurrentTimeMillis()
|
|
conf := &DataConf{Updated: now, Device: systemID}
|
|
if !gulu.File.IsExist(confPath) {
|
|
data, _ = gulu.JSON.MarshalIndentJSON(conf, "", " ")
|
|
if err = filelock.LockFileWrite(confPath, data); nil != err {
|
|
util.LogErrorf("save data conf [%s] failed: %s", confPath, err)
|
|
}
|
|
|
|
t := util.Millisecond2Time(now)
|
|
if err = os.Chtimes(confPath, t, t); nil != err {
|
|
util.LogErrorf("change file [%s] mod time failed: %s", confPath, err)
|
|
}
|
|
return
|
|
}
|
|
|
|
data, err = filelock.LockFileRead(confPath)
|
|
if nil != err {
|
|
data, err = recoverFrom(confPath)
|
|
if nil != err {
|
|
return
|
|
}
|
|
}
|
|
|
|
if err = gulu.JSON.UnmarshalJSON(data, conf); nil != err {
|
|
data, err = recoverFrom(confPath)
|
|
if nil != err {
|
|
return
|
|
}
|
|
if err = gulu.JSON.UnmarshalJSON(data, conf); nil != err {
|
|
util.LogErrorf("parse data conf [%s] failed: %s", confPath, err)
|
|
}
|
|
}
|
|
|
|
conf.Updated = now
|
|
conf.Device = systemID
|
|
if inc {
|
|
conf.SyncVer++
|
|
}
|
|
|
|
data, _ = gulu.JSON.MarshalIndentJSON(conf, "", " ")
|
|
if err = filelock.LockFileWrite(confPath, data); nil != err {
|
|
util.LogErrorf("save data conf [%s] failed: %s", confPath, err)
|
|
return
|
|
}
|
|
}
|
|
|
|
func recoverFrom(confPath string) (data []byte, err error) {
|
|
// 尝试从临时文件恢复
|
|
tmp := util.LatestTmpFile(confPath)
|
|
if "" == tmp {
|
|
return
|
|
}
|
|
|
|
data, err = filelock.NoLockFileRead(tmp)
|
|
if nil != err {
|
|
util.LogErrorf("read temp data conf [%s] failed: %s", tmp, err)
|
|
return
|
|
}
|
|
util.LogInfof("recovered file [%s] from [%s]", confPath, tmp)
|
|
os.RemoveAll(tmp)
|
|
return
|
|
}
|