forked from siyuan-note/dejavu
-
Notifications
You must be signed in to change notification settings - Fork 0
/
repo.go
612 lines (533 loc) · 16.1 KB
/
repo.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
// DejaVu - Data snapshot and sync.
// Copyright (c) 2022-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 dejavu
import (
"errors"
"io"
"os"
"path/filepath"
"strings"
"sync"
"time"
"github.com/88250/gulu"
"github.com/panjf2000/ants/v2"
"github.com/restic/chunker"
ignore "github.com/sabhiram/go-gitignore"
"github.com/siyuan-note/dejavu/cloud"
"github.com/siyuan-note/dejavu/entity"
"github.com/siyuan-note/dejavu/util"
"github.com/siyuan-note/eventbus"
"github.com/siyuan-note/filelock"
"github.com/siyuan-note/logging"
)
// Repo 描述了逮虾户数据仓库。
type Repo struct {
DataPath string // 数据文件夹的绝对路径,如:F:\\SiYuan\\data\\
Path string // 仓库的绝对路径,如:F:\\SiYuan\\repo\\
HistoryPath string // 数据历史文件夹的绝对路径,如:F:\\SiYuan\\history\\
TempPath string // 临时文件夹的绝对路径,如:F:\\SiYuan\\temp\\
DeviceID string // 设备 ID
DeviceName string // 设备名称
DeviceOS string // 操作系统
IgnoreLines []string // 忽略配置文件内容行,是用 .gitignore 语法
store *Store // 仓库的存储
chunkPol chunker.Pol // 文件分块多项式值
cloud cloud.Cloud // 云端存储服务
}
// NewRepo 创建一个新的仓库。
func NewRepo(dataPath, repoPath, historyPath, tempPath, deviceID, deviceName, deviceOS string, aesKey []byte, ignoreLines []string, cloud cloud.Cloud) (ret *Repo, err error) {
if nil != cloud {
cloud.GetConf().RepoPath = repoPath
}
ret = &Repo{
DataPath: filepath.Clean(dataPath),
Path: filepath.Clean(repoPath),
HistoryPath: filepath.Clean(historyPath),
TempPath: filepath.Clean(tempPath),
DeviceID: deviceID,
DeviceName: deviceName,
DeviceOS: deviceOS,
cloud: cloud,
chunkPol: chunker.Pol(0x3DA3358B4DC173), // 固定分块多项式值
}
if !strings.HasSuffix(ret.DataPath, string(os.PathSeparator)) {
ret.DataPath += string(os.PathSeparator)
}
if !strings.HasSuffix(ret.Path, string(os.PathSeparator)) {
ret.Path += string(os.PathSeparator)
}
if !strings.HasSuffix(ret.HistoryPath, string(os.PathSeparator)) {
ret.HistoryPath += string(os.PathSeparator)
}
ignoreLines = gulu.Str.RemoveDuplicatedElem(ignoreLines)
ret.IgnoreLines = ignoreLines
ret.store, err = NewStore(ret.Path, aesKey)
return
}
var ErrRepoFatalErr = errors.New("repo fatal error")
var lock = sync.Mutex{} // 仓库锁,Checkout、Index 和 Sync 等不能同时执行
type PurgeStat struct {
Objects int
Indexes int
Size int64
}
// Purge 清理所有未引用数据。
func (repo *Repo) Purge() (ret *PurgeStat, err error) {
lock.Lock()
defer lock.Unlock()
return repo.store.Purge()
}
// GetIndex 从仓库根据 id 获取索引。
func (repo *Repo) GetIndex(id string) (index *entity.Index, err error) {
lock.Lock()
defer lock.Unlock()
return repo.store.GetIndex(id)
}
// PutIndex 将索引 index 写入仓库。
func (repo *Repo) PutIndex(index *entity.Index) (err error) {
lock.Lock()
defer lock.Unlock()
return repo.store.PutIndex(index)
}
var workspaceDataDirs = []string{"assets", "emojis", "snippets", "storage", "templates", "widgets"}
var removeEmptyDirExcludes = append(workspaceDataDirs, ".git")
// Checkout 将仓库中的数据迁出到 repo 数据文件夹下。context 参数用于发布事件时传递调用上下文。
func (repo *Repo) Checkout(id string, context map[string]interface{}) (upserts, removes []*entity.File, err error) {
lock.Lock()
defer lock.Unlock()
index, err := repo.store.GetIndex(id)
if nil != err {
return
}
if err = os.MkdirAll(repo.DataPath, 0755); nil != err {
return
}
var files []*entity.File
ignoreMatcher := repo.ignoreMatcher()
eventbus.Publish(eventbus.EvtCheckoutBeforeWalkData, context, repo.DataPath)
err = filepath.Walk(repo.DataPath, func(path string, info os.FileInfo, err error) error {
if nil != err {
return io.EOF
}
if ignored, ignoreResult := repo.builtInIgnore(info, path); ignored || nil != ignoreResult {
return ignoreResult
}
p := repo.relPath(path)
if ignoreMatcher.MatchesPath(p) {
return nil
}
files = append(files, entity.NewFile(p, info.Size(), info.ModTime().UnixMilli()))
eventbus.Publish(eventbus.EvtCheckoutWalkData, context, p)
return nil
})
if nil != err {
return
}
defer gulu.File.RemoveEmptyDirs(repo.DataPath, removeEmptyDirExcludes...)
latestFiles, err := repo.getFiles(index.Files)
if nil != err {
return
}
upserts, removes = repo.DiffUpsertRemove(latestFiles, files)
if 1 > len(upserts) && 1 > len(removes) {
return
}
count, total := 0, len(upserts)
eventbus.Publish(eventbus.EvtCheckoutUpsertFiles, context, total)
for _, file := range upserts {
count++
if err = repo.checkoutFile(file, repo.DataPath, count, total, context); nil != err {
return
}
}
total = len(removes)
eventbus.Publish(eventbus.EvtCheckoutRemoveFiles, context, total)
for i, f := range removes {
absPath := repo.absPath(f.Path)
if err = filelock.Remove(absPath); nil != err {
return
}
eventbus.Publish(eventbus.EvtCheckoutRemoveFile, context, i+1, total)
}
return
}
// Index 将 repo 数据文件夹中的文件索引到仓库中。context 参数用于发布事件时传递调用上下文。
func (repo *Repo) Index(memo string, context map[string]interface{}) (ret *entity.Index, err error) {
lock.Lock()
defer lock.Unlock()
ret, err = repo.index(memo, context)
return
}
// GetFiles 返回快照索引 index 中的文件列表。
func (repo *Repo) GetFiles(index *entity.Index) (ret []*entity.File, err error) {
ret, err = repo.getFiles(index.Files)
return
}
func (repo *Repo) GetFile(fileID string) (ret *entity.File, err error) {
ret, err = repo.store.GetFile(fileID)
return
}
func (repo *Repo) OpenFile(file *entity.File) (ret []byte, err error) {
ret, err = repo.openFile(file)
return
}
func (repo *Repo) index(memo string, context map[string]interface{}) (ret *entity.Index, err error) {
var files []*entity.File
ignoreMatcher := repo.ignoreMatcher()
eventbus.Publish(eventbus.EvtIndexBeforeWalkData, context, repo.DataPath)
err = filepath.Walk(repo.DataPath, func(path string, info os.FileInfo, err error) error {
if nil != err {
return io.EOF
}
if ignored, ignoreResult := repo.builtInIgnore(info, path); ignored || nil != ignoreResult {
return ignoreResult
}
p := repo.relPath(path)
if ignoreMatcher.MatchesPath(p) {
return nil
}
files = append(files, entity.NewFile(p, info.Size(), info.ModTime().UnixMilli()))
eventbus.Publish(eventbus.EvtIndexWalkData, context, p)
return nil
})
if nil != err {
return
}
latest, err := repo.Latest()
init := false
if nil != err {
if ErrNotFoundIndex != err {
return
}
// 如果没有索引,则创建第一个索引
latest = &entity.Index{
ID: util.RandHash(),
Memo: memo,
Created: time.Now().UnixMilli(),
SystemID: repo.DeviceID,
SystemName: repo.DeviceName,
SystemOS: repo.DeviceOS,
}
init = true
}
var upserts, removes, latestFiles []*entity.File
if !init {
count, total := 0, len(files)
eventbus.Publish(eventbus.EvtIndexBeforeGetLatestFiles, context, total)
lock := &sync.Mutex{}
waitGroup := &sync.WaitGroup{}
p, _ := ants.NewPoolWithFunc(4, func(arg interface{}) {
defer waitGroup.Done()
count++
eventbus.Publish(eventbus.EvtIndexGetLatestFile, context, count, total)
fileID := arg.(string)
file, getErr := repo.store.GetFile(fileID)
if nil != getErr {
logging.LogErrorf("get file [%s] failed: %s", fileID, getErr)
err = ErrNotFoundObject
return
}
lock.Lock()
latestFiles = append(latestFiles, file)
lock.Unlock()
})
for _, f := range latest.Files {
waitGroup.Add(1)
err = p.Invoke(f)
if nil != err {
return
}
}
waitGroup.Wait()
p.Release()
}
upserts, removes = repo.DiffUpsertRemove(files, latestFiles)
if 1 > len(upserts) && 1 > len(removes) {
ret = latest
return
}
if init {
ret = latest
} else {
ret = &entity.Index{
ID: util.RandHash(),
Memo: memo,
Created: time.Now().UnixMilli(),
SystemID: repo.DeviceID,
SystemName: repo.DeviceName,
SystemOS: repo.DeviceOS,
}
}
count, total := 0, len(upserts)
eventbus.Publish(eventbus.EvtIndexUpsertFiles, context, total)
waitGroup := &sync.WaitGroup{}
p, _ := ants.NewPoolWithFunc(4, func(arg interface{}) {
defer waitGroup.Done()
count++
file := arg.(*entity.File)
err = repo.putFileChunks(file, context, count, total)
if nil != err {
return
}
})
for _, file := range upserts {
waitGroup.Add(1)
err = p.Invoke(file)
if nil != err {
return
}
}
waitGroup.Wait()
p.Release()
for _, file := range files {
ret.Files = append(ret.Files, file.ID)
ret.Size += file.Size
}
ret.Count = len(ret.Files)
err = repo.store.PutIndex(ret)
if nil != err {
return
}
err = repo.UpdateLatest(ret.ID)
return
}
func (repo *Repo) builtInIgnore(info os.FileInfo, absPath string) (ignored bool, err error) {
name := info.Name()
if info.IsDir() {
if strings.HasPrefix(name, ".") {
if ".siyuan" == name {
return true, nil
}
return true, filepath.SkipDir
}
if "filesys_status_check" == name {
// 数据同步忽略用于文件系统检查的文件 https://github.com/siyuan-note/siyuan/issues/7744
return true, filepath.SkipDir
}
return true, nil
} else {
if strings.HasPrefix(name, ".") || strings.HasSuffix(name, ".tmp") {
return true, nil
}
slashAbsPath := filepath.ToSlash(absPath)
if strings.HasSuffix(slashAbsPath, "data/storage/local.json") {
// localStorage 不再支持同步 https://github.com/siyuan-note/siyuan/issues/6964
return true, nil
}
if strings.HasSuffix(slashAbsPath, "data/storage/recent-doc.json") {
// 数据同步忽略最近文档存储 https://github.com/siyuan-note/siyuan/issues/7246
return true, nil
}
}
if gulu.File.IsHidden(absPath) {
return true, nil
}
if !info.Mode().IsRegular() {
return true, nil
}
return false, nil
}
func (repo *Repo) ignoreMatcher() *ignore.GitIgnore {
return ignore.CompileIgnoreLines(repo.IgnoreLines...)
}
func (repo *Repo) absPath(relPath string) string {
return filepath.Join(repo.DataPath, relPath)
}
func (repo *Repo) relPath(absPath string) string {
absPath = filepath.Clean(absPath)
return "/" + filepath.ToSlash(strings.TrimPrefix(absPath, repo.DataPath))
}
func (repo *Repo) putFileChunks(file *entity.File, context map[string]interface{}, count, total int) (err error) {
absPath := repo.absPath(file.Path)
info, err := os.Stat(absPath)
if nil != err {
logging.LogErrorf("stat file [%s] failed: %s", absPath, err)
return
}
if chunker.MinSize > info.Size() {
var data []byte
data, err = filelock.ReadFile(absPath)
if nil != err {
logging.LogErrorf("read file [%s] failed: %s", absPath, err)
return
}
chunkHash := util.Hash(data)
file.Chunks = append(file.Chunks, chunkHash)
chunk := &entity.Chunk{ID: chunkHash, Data: data}
if err = repo.store.PutChunk(chunk); nil != err {
logging.LogErrorf("put chunk [%s] failed: %s", chunkHash, err)
return
}
eventbus.Publish(eventbus.EvtIndexUpsertFile, context, count, total)
err = repo.store.PutFile(file)
if nil != err {
return
}
return
}
reader, err := os.OpenFile(absPath, os.O_RDWR, 0644)
if nil != err {
logging.LogErrorf("open file [%s] failed: %s", absPath, err)
return
}
chnkr := chunker.NewWithBoundaries(reader, repo.chunkPol, chunker.MinSize, chunker.MaxSize)
for {
buf := make([]byte, chunker.MaxSize)
var chnk chunker.Chunk
chnk, err = chnkr.Next(buf)
if io.EOF == err {
break
}
if nil != err {
logging.LogErrorf("chunk file [%s] failed: %s", absPath, err)
return
}
chunkHash := util.Hash(chnk.Data)
file.Chunks = append(file.Chunks, chunkHash)
chunk := &entity.Chunk{ID: chunkHash, Data: chnk.Data}
if err = repo.store.PutChunk(chunk); nil != err {
logging.LogErrorf("put chunk [%s] failed: %s", chunkHash, err)
return
}
}
if closeErr := reader.Close(); nil != closeErr {
logging.LogErrorf("close file [%s] failed: %s", absPath, closeErr)
}
eventbus.Publish(eventbus.EvtIndexUpsertFile, context, count, total)
err = repo.store.PutFile(file)
if nil != err {
return
}
return
}
func (repo *Repo) getFiles(fileIDs []string) (ret []*entity.File, err error) {
for _, fileID := range fileIDs {
file, getErr := repo.store.GetFile(fileID)
if nil != getErr {
err = getErr
return
}
ret = append(ret, file)
}
return
}
func (repo *Repo) openFile(file *entity.File) (ret []byte, err error) {
for _, c := range file.Chunks {
var chunk *entity.Chunk
chunk, err = repo.store.GetChunk(c)
if nil != err {
return
}
ret = append(ret, chunk.Data...)
}
return
}
//func (repo *Repo) checkoutFiles(files []*entity.File, context map[string]interface{}) (err error) {
// now := time.Now()
//
// total := len(files)
// eventbus.Publish(eventbus.EvtCheckoutUpsertFiles, context, total)
// for i, file := range files {
// err = repo.checkoutFile(file, repo.DataPath, i+1, total, context)
// if nil != err {
// return
// }
// }
//
// logging.LogInfof("checkout files done, total: %d, cost: %s", total, time.Since(now))
// return
//}
func (repo *Repo) checkoutFiles(files []*entity.File, context map[string]interface{}) (err error) {
//now := time.Now()
count, total := 0, len(files)
eventbus.Publish(eventbus.EvtCheckoutUpsertFiles, context, total)
waitGroup := &sync.WaitGroup{}
p, _ := ants.NewPoolWithFunc(4, func(arg interface{}) {
defer waitGroup.Done()
file := arg.(*entity.File)
count++
err = repo.checkoutFile(file, repo.DataPath, count, total, context)
if nil != err {
return
}
})
for _, f := range files {
waitGroup.Add(1)
err = p.Invoke(f)
if nil != err {
return
}
}
waitGroup.Wait()
p.Release()
//logging.LogInfof("checkout files done, total: %d, cost: %s", total, time.Since(now))
return
}
func (repo *Repo) checkoutFile(file *entity.File, checkoutDir string, count, total int, context map[string]interface{}) (err error) {
absPath := filepath.Join(checkoutDir, file.Path)
dir, name := filepath.Split(absPath)
if err = os.MkdirAll(dir, 0755); nil != err {
return
}
tmp := filepath.Join(dir, name+gulu.Rand.String(7)+".tmp")
f, err := os.OpenFile(tmp, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0600)
if nil != err {
return
}
for _, c := range file.Chunks {
var chunk *entity.Chunk
chunk, err = repo.store.GetChunk(c)
if nil != err {
return
}
if _, err = f.Write(chunk.Data); nil != err {
logging.LogErrorf("write file [%s] failed: %s", absPath, err)
return
}
}
if err = f.Sync(); nil != err {
logging.LogErrorf("write file [%s] failed: %s", absPath, err)
return
}
if err = f.Close(); nil != err {
logging.LogErrorf("write file [%s] failed: %s", absPath, err)
return
}
filelock.RWLock.Lock()
defer filelock.RWLock.Unlock()
for i := 0; i < 3; i++ {
err = os.Rename(f.Name(), absPath) // Windows 上重命名是非原子的
if nil == err {
os.Remove(f.Name())
break
}
if errMsg := strings.ToLower(err.Error()); strings.Contains(errMsg, "access is denied") || strings.Contains(errMsg, "used by another process") { // 文件可能是被锁定
time.Sleep(200 * time.Millisecond)
continue
}
break
}
if nil != err {
logging.LogFatalf(logging.ExitCodeFileSysErr, "write file [%s] failed: %s", absPath, err)
}
updated := time.UnixMilli(file.Updated)
if err = os.Chtimes(absPath, updated, updated); nil != err {
logging.LogErrorf("change [%s] time failed: %s", absPath, err)
return
}
eventbus.Publish(eventbus.EvtCheckoutUpsertFile, context, count, total)
return
}