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sync.go
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// 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 (
"bytes"
"errors"
"fmt"
"os"
"path"
"path/filepath"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/88250/gulu"
"github.com/panjf2000/ants/v2"
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"
)
var (
ErrCloudStorageSizeExceeded = errors.New("cloud storage limit size exceeded")
ErrCloudBackupCountExceeded = errors.New("cloud backup count exceeded")
ErrCloudGenerateConflictHistory = errors.New("generate conflict history failed")
)
type MergeResult struct {
Time time.Time
Upserts, Removes, Conflicts []*entity.File
}
func (mr *MergeResult) DataChanged() bool {
return len(mr.Upserts) > 0 || len(mr.Removes) > 0 || len(mr.Conflicts) > 0
}
type DownloadTrafficStat struct {
DownloadFileCount int
DownloadChunkCount int
DownloadBytes int64
}
type UploadTrafficStat struct {
UploadFileCount int
UploadChunkCount int
UploadBytes int64
}
type APITrafficStat struct {
APIGet int
APIPut int
}
type TrafficStat struct {
DownloadTrafficStat
UploadTrafficStat
APITrafficStat
m *sync.Mutex
}
func (repo *Repo) GetSyncCloudFiles(cloudLatest *entity.Index, context map[string]interface{}) (fetchedFiles []*entity.File, err error) {
lock.Lock()
defer lock.Unlock()
fetchedFiles, err = repo.getSyncCloudFiles(cloudLatest, context)
return
}
func (repo *Repo) GetCloudLatest(context map[string]interface{}) (cloudLatest *entity.Index, err error) {
lock.Lock()
defer lock.Unlock()
_, cloudLatest, err = repo.downloadCloudLatest(context)
return
}
func (repo *Repo) Sync(context map[string]interface{}) (mergeResult *MergeResult, trafficStat *TrafficStat, err error) {
lock.Lock()
defer lock.Unlock()
// 锁定云端，防止其他设备并发上传数据
err = repo.tryLockCloud(repo.DeviceID, context)
if nil != err {
return
}
defer repo.unlockCloud(context)
mergeResult, trafficStat, err = repo.sync(context)
if e, ok := err.(*os.PathError); ok && isNoSuchFileOrDirErr(err) {
p := e.Path
if !strings.Contains(p, "objects") {
return
}
// 索引时正常，但是上传时可能因为外部变更导致对象（文件或者分块）不存在，此时需要告知用户数据仓库已经损坏，需要重置数据仓库
logging.LogErrorf("sync failed: %s", err)
err = ErrRepoFatal
}
return
}
func (repo *Repo) sync(context map[string]interface{}) (mergeResult *MergeResult, trafficStat *TrafficStat, err error) {
mergeResult = &MergeResult{Time: time.Now()}
trafficStat = &TrafficStat{m: &sync.Mutex{}}
// 获取本地最新索引
latest, err := repo.Latest()
if nil != err {
logging.LogErrorf("get latest failed: %s", err)
return
}
// 从云端获取最新索引
length, cloudLatest, err := repo.downloadCloudLatest(context)
if nil != err {
if !errors.Is(err, cloud.ErrCloudObjectNotFound) {
logging.LogErrorf("download cloud latest failed: %s", err)
return
}
}
trafficStat.DownloadFileCount++
trafficStat.DownloadBytes += length
trafficStat.APIGet++
if cloudLatest.ID == latest.ID {
// 数据一致，直接返回
return
}
availableSize := repo.cloud.GetAvailableSize()
if availableSize <= cloudLatest.Size || availableSize <= latest.Size {
err = ErrCloudStorageSizeExceeded
return
}
// 计算本地缺失的文件
fetchFileIDs, err := repo.localNotFoundFiles(cloudLatest.Files)
if nil != err {
logging.LogErrorf("get local not found files failed: %s", err)
return
}
// 从云端下载缺失文件并入库
length, fetchedFiles, err := repo.downloadCloudFilesPut(fetchFileIDs, context)
if nil != err {
logging.LogErrorf("download cloud files put failed: %s", err)
return
}
trafficStat.DownloadBytes += length
trafficStat.DownloadFileCount += len(fetchFileIDs)
trafficStat.APIGet += trafficStat.DownloadFileCount
// 执行数据同步
err = repo.sync0(context, fetchedFiles, cloudLatest, latest, mergeResult, trafficStat)
return
}
// sync0 实现了数据同步的核心逻辑。
//
// fetchedFiles 已从云端下载的文件
// cloudLatest 云端最新索引
// latest 本地最新索引
// mergeResult 待返回的同步合并结果
// trafficStat 待返回的流量统计
func (repo *Repo) sync0(context map[string]interface{},
fetchedFiles []*entity.File, cloudLatest *entity.Index, latest *entity.Index, mergeResult *MergeResult, trafficStat *TrafficStat) (err error) {
// 组装还原云端最新文件列表
cloudLatestFiles, err := repo.getFiles(cloudLatest.Files)
if nil != err {
logging.LogErrorf("get cloud latest files failed: %s", err)
return
}
// 从文件列表中得到去重后的分块列表
cloudChunkIDs := repo.getChunks(cloudLatestFiles)
waitGroup := sync.WaitGroup{}
waitGroup.Add(1)
var errs []error
go func() { // 从云端下载缺失分块并入库
defer waitGroup.Done()
fetchChunkIDs, downloadErr := repo.localNotFoundChunks(cloudChunkIDs)
if nil != downloadErr {
logging.LogErrorf("get local not found chunks failed: %s", downloadErr)
errs = append(errs, downloadErr)
return
}
length, downloadErr := repo.downloadCloudChunksPut(fetchChunkIDs, context)
if nil != downloadErr {
logging.LogErrorf("download cloud chunks put failed: %s", downloadErr)
errs = append(errs, downloadErr)
return
}
trafficStat.DownloadBytes += length
trafficStat.DownloadChunkCount += len(fetchChunkIDs)
trafficStat.APIGet += trafficStat.DownloadChunkCount
}()
waitGroup.Add(1)
go func() { // 上传差异数据
defer waitGroup.Done()
uploadErr := repo.uploadCloud(context, latest, cloudLatest, cloudChunkIDs, trafficStat)
if nil != uploadErr {
logging.LogErrorf("upload cloud failed: %s", uploadErr)
errs = append(errs, uploadErr)
return
}
}()
waitGroup.Wait()
if 0 < len(errs) {
err = errs[0]
return
}
// 计算本地相比上一个同步点的 upsert 和 remove 差异
latestFiles, err := repo.getFiles(latest.Files)
if nil != err {
logging.LogErrorf("get latest files failed: %s", err)
return
}
logging.LogInfof("got local latest [%s] files [%d]", latest.ID, len(latestFiles))
latestSync := repo.latestSync()
latestSyncFiles, err := repo.getFiles(latestSync.Files)
if nil != err {
logging.LogErrorf("get latest sync files failed: %s", err)
return
}
localUpserts, localRemoves := repo.diffUpsertRemove(latestFiles, latestSyncFiles, false)
latestFileMap := map[string]*entity.File{}
for _, file := range latestFiles {
latestFileMap[file.Path] = file
}
// 计算云端最新相比本地最新的 upsert 和 remove 差异
var cloudUpserts, cloudRemoves []*entity.File
if "" != cloudLatest.ID {
cloudUpserts, cloudRemoves = repo.diffUpsertRemove(cloudLatestFiles, latestFiles, true)
}
// 增加一些诊断日志 https://ld246.com/article/1698370932077
for _, c := range cloudUpserts {
logging.LogInfof("cloud upsert [%s, %s, %s]", c.ID, c.Path, time.UnixMilli(c.Updated).Format("2006-01-02 15:04:05"))
}
for _, r := range cloudRemoves {
logging.LogInfof("cloud remove [%s, %s, %s]", r.ID, r.Path, time.UnixMilli(r.Updated).Format("2006-01-02 15:04:05"))
}
for _, c := range localUpserts {
logging.LogInfof("local upsert [%s, %s, %s]", c.ID, c.Path, time.UnixMilli(c.Updated).Format("2006-01-02 15:04:05"))
}
for _, r := range localRemoves {
logging.LogInfof("local remove [%s, %s, %s]", r.ID, r.Path, time.UnixMilli(r.Updated).Format("2006-01-02 15:04:05"))
}
// 避免旧的本地数据覆盖云端数据 https://github.com/siyuan-note/siyuan/issues/7403
localUpserts = repo.filterLocalUpserts(localUpserts, cloudUpserts)
localChanged := 0 < len(localUpserts) || 0 < len(localRemoves)
// 记录本地 syncignore 变更
var localUpsertIgnore *entity.File
for _, upsert := range localUpserts {
if "/.siyuan/syncignore" == upsert.Path {
localUpsertIgnore = upsert
break
}
}
var fetchedFileIDs []string
for _, fetchedFile := range fetchedFiles {
fetchedFileIDs = append(fetchedFileIDs, fetchedFile.ID)
}
// 计算冲突的 upsert 和无冲突能够合并的 upsert
// 冲突的文件以本地 upsert 和 remove 为准
var tmpMergeConflicts []*entity.File
var cloudUpsertIgnore *entity.File
for _, cloudUpsert := range cloudUpserts {
if "/.siyuan/syncignore" == cloudUpsert.Path {
cloudUpsertIgnore = cloudUpsert
}
if localUpsert := repo.getFile(localUpserts, cloudUpsert); nil != localUpsert {
// 无论是否发生实际下载文件，都需要生成本地历史，以确保任何情况下都能够通过数据历史恢复文件
tmpMergeConflicts = append(tmpMergeConflicts, cloudUpsert)
if gulu.Str.Contains(cloudUpsert.ID, fetchedFileIDs) {
// 发生实际下载文件的情况下才能认为云端有更新的 upsert 从而导致了冲突
// 冲突列表在外部单独处理生成副本
mergeResult.Conflicts = append(mergeResult.Conflicts, cloudUpsert)
logging.LogInfof("sync merge conflict [%s, %s, %s]", cloudUpsert.ID, cloudUpsert.Path, time.UnixMilli(cloudUpsert.Updated).Format("2006-01-02 15:04:05"))
}
continue
}
if nil == repo.getFile(localRemoves, cloudUpsert) {
if strings.HasSuffix(cloudUpsert.Path, ".tmp") {
// 数据仓库不迁出 `.tmp` 临时文件 https://github.com/siyuan-note/siyuan/issues/7087
logging.LogWarnf("ignored tmp file [%s]", cloudUpsert.Path)
continue
}
// 如果云端 upsert 早于本地已经存在的文件 7 分钟，则以本地文件为准
cloudUpsertTooOld := false
if localFile := latestFileMap[cloudUpsert.Path]; nil != localFile && localFile.Updated > cloudUpsert.Updated+7*60*1000 {
logging.LogWarnf("ignored cloud upsert [%s, %s, %s] because local file is newer", cloudUpsert.ID, cloudUpsert.Path, time.UnixMilli(cloudUpsert.Updated).Format("2006-01-02 15:04:05"))
cloudUpsertTooOld = true
}
if !cloudUpsertTooOld {
mergeResult.Upserts = append(mergeResult.Upserts, cloudUpsert)
logging.LogInfof("sync merge upsert [%s, %s, %s]", cloudUpsert.ID, cloudUpsert.Path, time.UnixMilli(cloudUpsert.Updated).Format("2006-01-02 15:04:05"))
}
}
}
// 计算能够无冲突合并的 remove，冲突的文件以本地 upsert 为准
for _, cloudRemove := range cloudRemoves {
if nil == repo.getFile(localUpserts, cloudRemove) {
mergeResult.Removes = append(mergeResult.Removes, cloudRemove)
}
}
// 云端如果更新了忽略文件则使用其规则过滤 remove，避免后面误删本地文件 https://github.com/siyuan-note/siyuan/issues/5497
var ignoreLines []string
if nil != cloudUpsertIgnore {
coDir := filepath.Join(repo.DataPath)
if nil != localUpsertIgnore {
// 本地 syncignore 存在变更，则临时迁出
coDir = filepath.Join(repo.TempPath, "repo", "sync", "ignore")
}
if err = repo.checkoutFile(cloudUpsertIgnore, coDir, 1, 1, context); nil != err {
logging.LogErrorf("checkout ignore file failed: %s", err)
return
}
data, readErr := filelock.ReadFile(filepath.Join(coDir, cloudUpsertIgnore.Path))
if nil != readErr {
logging.LogErrorf("read ignore file failed: %s", readErr)
err = readErr
return
}
dataStr := string(data)
dataStr = strings.ReplaceAll(dataStr, "\r\n", "\n")
ignoreLines = strings.Split(dataStr, "\n")
//logging.LogInfof("sync merge ignore rules: \n %s", strings.Join(ignoreLines, "\n "))
}
ignoreMatcher := ignore.CompileIgnoreLines(ignoreLines...)
var mergeResultRemovesTmp []*entity.File
for _, remove := range mergeResult.Removes {
if !ignoreMatcher.MatchesPath(remove.Path) {
mergeResultRemovesTmp = append(mergeResultRemovesTmp, remove)
continue
}
// logging.LogInfof("sync merge ignore remove [%s]", remove.Path)
}
mergeResult.Removes = mergeResultRemovesTmp
// 冲突文件复制到数据历史文件夹
if 0 < len(tmpMergeConflicts) {
now := mergeResult.Time.Format("2006-01-02-150405")
temp := filepath.Join(repo.TempPath, "repo", "sync", "conflicts", now)
for i, file := range tmpMergeConflicts {
var checkoutTmp *entity.File
checkoutTmp, err = repo.store.GetFile(file.ID)
if nil != err {
logging.LogErrorf("get file failed: %s", err)
return
}
err = repo.checkoutFile(checkoutTmp, temp, i+1, len(tmpMergeConflicts), context)
if nil != err {
logging.LogErrorf("checkout file failed: %s", err)
return
}
absPath := filepath.Join(temp, checkoutTmp.Path)
err = repo.genSyncHistory(now, file.Path, absPath)
if nil != err {
logging.LogErrorf("generate sync history failed: %s", err)
err = ErrCloudGenerateConflictHistory
return
}
}
}
// 数据变更后还原工作区
err = repo.checkoutFiles(mergeResult.Upserts, context)
if nil != err {
logging.LogErrorf("checkout files failed: %s", err)
return
}
err = repo.removeFiles(mergeResult.Removes, context)
if nil != err {
logging.LogErrorf("remove files failed: %s", err)
return
}
// 处理合并
err = repo.mergeSync(mergeResult, localChanged, true, latest, cloudLatest, cloudChunkIDs, trafficStat, context)
if nil != err {
logging.LogErrorf("merge sync failed: %s", err)
return
}
// 统计流量
go repo.cloud.AddTraffic(&cloud.Traffic{
UploadBytes: trafficStat.UploadBytes,
DownloadBytes: trafficStat.DownloadBytes,
APIGet: trafficStat.APIGet,
APIPut: trafficStat.APIPut,
})
// 移除空目录
gulu.File.RemoveEmptyDirs(repo.DataPath, removeEmptyDirExcludes...)
return
}
func (repo *Repo) mergeSync(mergeResult *MergeResult, localChanged, needSyncCloud bool, latest, cloudLatest *entity.Index, cloudChunkIDs []string, trafficStat *TrafficStat, context map[string]interface{}) (err error) {
// 数据变更后还原工作区
err = repo.checkoutFiles(mergeResult.Upserts, context)
if nil != err {
logging.LogErrorf("checkout files failed: %s", err)
return
}
err = repo.removeFiles(mergeResult.Removes, context)
if nil != err {
logging.LogErrorf("remove files failed: %s", err)
return
}
if mergeResult.DataChanged() {
if localChanged { // 如果云端和本地都改变了，则需要创建合并索引并再次同步
logging.LogInfof("creating merge index [%s]", latest.ID)
mergeStart := time.Now()
mergedLatest, mergeIndexErr := repo.index("[Sync] Cloud sync merge", false, context)
if nil != mergeIndexErr {
logging.LogErrorf("merge index failed: %s", mergeIndexErr)
err = mergeIndexErr
return
}
diff, mergeIndexErr := repo.diffIndex(mergedLatest, latest)
if nil != mergeIndexErr {
logging.LogErrorf("diff index failed: %s", mergeIndexErr)
err = mergeIndexErr
return
}
for _, add := range diff.AddsLeft {
logging.LogInfof("merge index add [%s, %s, %s]", add.ID, add.Path, time.UnixMilli(add.Updated).Format("2006-01-02 15:04:05"))
}
for _, update := range diff.UpdatesLeft {
logging.LogInfof("merge index update [%s, %s, %s]", update.ID, update.Path, time.UnixMilli(update.Updated).Format("2006-01-02 15:04:05"))
}
latest = mergedLatest
mergeElapsed := time.Since(mergeStart)
mergeMemo := fmt.Sprintf("[Sync] Cloud sync merge, completed in %.2fs", mergeElapsed.Seconds())
latest.Memo = mergeMemo
err = repo.store.PutIndex(latest)
if nil != err {
logging.LogErrorf("put merge index failed: %s", err)
return
}
logging.LogInfof("created merge index [%s]", latest.ID)
if needSyncCloud {
err = repo.uploadCloud(context, latest, cloudLatest, cloudChunkIDs, trafficStat)
if nil != err {
logging.LogErrorf("upload cloud failed: %s", err)
return
}
}
} else { // 只有云端改变了，本地没有改变，则直接使用云端索引作为本地最新索引
latest = cloudLatest
}
}
if (localChanged && needSyncCloud) || "" == cloudLatest.ID {
err = repo.updateCloudIndexes(latest, trafficStat, context)
if nil != err {
logging.LogErrorf("update cloud indexes failed: %s", err)
return
}
}
// 更新本地最新索引
if err = repo.UpdateLatest(latest); nil != err {
logging.LogErrorf("update latest failed: %s", err)
return
}
if err = repo.store.PutIndex(latest); nil != err {
logging.LogErrorf("put index failed: %s", err)
return
}
// 更新本地同步点
err = repo.UpdateLatestSync(latest)
if nil != err {
logging.LogErrorf("update latest sync failed: %s", err)
return
}
return
}
func (repo *Repo) updateCloudIndexes(latest *entity.Index, trafficStat *TrafficStat, context map[string]interface{}) (err error) {
// 生成校验索引
files, getErr := repo.getFiles(latest.Files)
if nil != getErr {
logging.LogErrorf("get files failed: %s", getErr)
err = getErr
return
}
checkIndex := &entity.CheckIndex{ID: util.RandHash(), IndexID: latest.ID}
for _, file := range files {
checkIndex.Files = append(checkIndex.Files, &entity.CheckIndexFile{ID: file.ID, Chunks: file.Chunks})
}
// 更新本地 latest 的关联的 checkIndexID，后续会将本地 latest 上传到云端
latest.CheckIndexID = checkIndex.ID
if err = repo.store.PutIndex(latest); nil != err {
logging.LogErrorf("put index failed: %s", err)
return
}
// 以下步骤是更新云端相关索引数据
var errs []error
errLock := sync.Mutex{}
waitGroup := &sync.WaitGroup{}
// 更新云端 latest
waitGroup.Add(1)
go func() {
defer waitGroup.Done()
// 上传索引和更新 refs/latest 两个操作需要保证顺序，否则可能会导致云端索引 和 refs/latest 不一致 https://github.com/siyuan-note/siyuan/issues/10111
// 上传索引
length, uploadErr := repo.uploadIndex(latest, context)
if nil != uploadErr {
logging.LogErrorf("upload latest index failed: %s", uploadErr)
errLock.Lock()
errs = append(errs, uploadErr)
errLock.Unlock()
return
}
trafficStat.m.Lock()
trafficStat.UploadFileCount++
trafficStat.UploadBytes += length
trafficStat.APIPut++
trafficStat.m.Unlock()
// 更新 refs/latest
length, uploadErr = repo.updateCloudRef("refs/latest", context)
if nil != uploadErr {
logging.LogErrorf("update cloud [refs/latest] failed: %s", uploadErr)
errLock.Lock()
errs = append(errs, uploadErr)
errLock.Unlock()
return
}
trafficStat.m.Lock()
trafficStat.UploadFileCount++
trafficStat.UploadBytes += length
trafficStat.APIPut++
trafficStat.m.Unlock()
}()
isS3OrSiYuan := repo.isCloudS3() || repo.isCloudSiYuan()
if isS3OrSiYuan {
// 上传最新索引列表 https://github.com/siyuan-note/siyuan/issues/12991
// 上传 refs/latest 后可能存在缓存导致后续下载 refs/latest 时返回的是旧数据，所以这里还需要再上传 refs/latest-seqNum-id，
// 后续下载 latest 时使用 list 接口返回前缀为 refs/latest- 的对象，然后取最新的一个和下载到的 latest 对比，
// 如果不一致则重现下载 refs/latest 进行确认，具体细节参考 downloadCloudLatest()
waitGroup.Add(1)
go func() {
defer waitGroup.Done()
_, maxSeqNum, seqNumLatests := repo.getSeqNumLatest()
seqNum := maxSeqNum + 1
_, uploadErr := repo.cloud.UploadBytes("refs/latest-"+strconv.Itoa(seqNum)+"-"+latest.ID, []byte(latest.ID), true)
if nil != uploadErr {
logging.LogErrorf("update cloud [refs/latest-%d] failed: %s", seqNum, uploadErr)
errLock.Lock()
errs = append(errs, uploadErr)
errLock.Unlock()
return
}
// 删除旧的 refs/latest-*
go func() {
for _, seqNumLatest := range seqNumLatests {
deleteErr := repo.cloud.RemoveObject(seqNumLatest)
if nil != deleteErr {
logging.LogWarnf("delete cloud [%s] failed: %s", seqNumLatest, deleteErr)
continue
}
}
}()
}()
}
// 更新云端索引列表
waitGroup.Add(1)
go func() {
defer waitGroup.Done()
downloadBytes, uploadBytes, uploadErr := repo.updateCloudIndexesV2(latest, context)
if nil != uploadErr {
logging.LogErrorf("update cloud indexes failed: %s", uploadErr)
errLock.Lock()
errs = append(errs, uploadErr)
errLock.Unlock()
return
}
trafficStat.m.Lock()
trafficStat.DownloadFileCount++
trafficStat.DownloadBytes += downloadBytes
trafficStat.UploadFileCount++
trafficStat.UploadBytes += uploadBytes
trafficStat.APIGet++
trafficStat.APIPut++
trafficStat.m.Unlock()
}()
// 上传校验索引
waitGroup.Add(1)
go func() {
defer waitGroup.Done()
uploadErr := repo.updateCloudCheckIndex(checkIndex, context)
if nil != uploadErr {
logging.LogErrorf("update cloud check index failed: %s", uploadErr)
errLock.Lock()
errs = append(errs, uploadErr)
errLock.Unlock()
return
}
}()
// 尝试上传修复云端缺失的数据对象
waitGroup.Add(1)
go func() {
defer waitGroup.Done()
repo.uploadCloudMissingObjects(trafficStat, context)
}()
waitGroup.Wait()
if 0 < len(errs) {
err = errs[0]
}
return
}
// filterLocalUpserts 避免旧的本地数据覆盖云端数据 https://github.com/siyuan-note/siyuan/issues/7403
func (repo *Repo) filterLocalUpserts(localUpserts, cloudUpserts []*entity.File) (ret []*entity.File) {
cloudUpsertsMap := map[string]*entity.File{}
for _, cloudUpsert := range cloudUpserts {
cloudUpsertsMap[cloudUpsert.Path] = cloudUpsert
}
var toRemoveLocalUpsertPaths []string
for _, localUpsert := range localUpserts {
if cloudUpsert := cloudUpsertsMap[localUpsert.Path]; nil != cloudUpsert {
if localUpsert.Updated < cloudUpsert.Updated-1000*60*7 { // 本地早于云端 7 分钟
toRemoveLocalUpsertPaths = append(toRemoveLocalUpsertPaths, localUpsert.Path) // 使用云端数据覆盖本地数据
logging.LogWarnf("ignored local upsert [%s, %s, %s] because it is older than cloud upsert [%s, %s, %s]",
localUpsert.ID, localUpsert.Path, time.UnixMilli(localUpsert.Updated).Format("2006-01-02 15:04:05"),
cloudUpsert.ID, cloudUpsert.Path, time.UnixMilli(cloudUpsert.Updated).Format("2006-01-02 15:04:05"))
}
}
}
for _, localUpsert := range localUpserts {
if !gulu.Str.Contains(localUpsert.Path, toRemoveLocalUpsertPaths) {
ret = append(ret, localUpsert)
}
}
if len(localUpserts) != len(ret) {
buf := bytes.Buffer{}
buf.WriteString("filtered local upserts from:\n")
for _, localUpsert := range localUpserts {
buf.WriteString(fmt.Sprintf(" [%s, %s, %s]\n", localUpsert.ID, localUpsert.Path, time.UnixMilli(localUpsert.Updated).Format("2006-01-02 15:04:05")))
}
buf.WriteString("to:\n")
for _, localUpsert := range ret {
buf.WriteString(fmt.Sprintf(" [%s, %s, %s]\n", localUpsert.ID, localUpsert.Path, time.UnixMilli(localUpsert.Updated).Format("2006-01-02 15:04:05")))
}
if 1 > len(ret) {
buf.WriteString(" []")
}
logging.LogWarnf(buf.String())
}
return
}
func (repo *Repo) getSyncCloudFiles(cloudLatest *entity.Index, context map[string]interface{}) (fetchedFiles []*entity.File, err error) {
latest, err := repo.Latest()
if nil != err {
logging.LogErrorf("get latest failed: %s", err)
return
}
if cloudLatest.ID == latest.ID {
// 数据一致，直接返回
return
}
availableSize := repo.cloud.GetAvailableSize()
if availableSize <= cloudLatest.Size || availableSize <= latest.Size {
err = ErrCloudStorageSizeExceeded
return
}
// 计算本地缺失的文件
fetchFileIDs, err := repo.localNotFoundFiles(cloudLatest.Files)
if nil != err {
logging.LogErrorf("get local not found files failed: %s", err)
return
}
// 从云端下载缺失文件并入库
length, fetchedFiles, err := repo.downloadCloudFilesPut(fetchFileIDs, context)
if nil != err {
logging.LogErrorf("download cloud files put failed: %s", err)
return
}
trafficStat := &TrafficStat{m: &sync.Mutex{}}
trafficStat.DownloadBytes += length
trafficStat.DownloadFileCount += len(fetchFileIDs)
trafficStat.APIGet += len(fetchFileIDs)
// 统计流量
go repo.cloud.AddTraffic(&cloud.Traffic{
UploadBytes: trafficStat.UploadBytes,
DownloadBytes: trafficStat.DownloadBytes,
APIGet: trafficStat.APIGet,
})
return
}
func (repo *Repo) downloadCloudChunksPut(chunkIDs []string, context map[string]interface{}) (downloadBytes int64, err error) {
if 1 > len(chunkIDs) {
return
}
waitGroup := &sync.WaitGroup{}
var downloadErr error
poolSize := repo.cloud.GetConcurrentReqs()
if poolSize > len(chunkIDs) {
poolSize = len(chunkIDs)
}
count := atomic.Int32{}
dBytes := atomic.Int64{}
total := len(chunkIDs)
p, err := ants.NewPoolWithFunc(poolSize, func(arg interface{}) {
defer waitGroup.Done()
if nil != downloadErr {
return // 快速失败
}
chunkID := arg.(string)
count.Add(1)
length, chunk, dccErr := repo.downloadCloudChunk(chunkID, int(count.Load()), total, context)
if nil != dccErr {
downloadErr = dccErr
return
}
if pcErr := repo.store.PutChunk(chunk); nil != pcErr {
downloadErr = pcErr
return
}
dBytes.Add(length)
})
if nil != err {
return
}
eventbus.Publish(eventbus.EvtCloudBeforeDownloadChunks, context, total)
for _, chunkID := range chunkIDs {
waitGroup.Add(1)
if err = p.Invoke(chunkID); nil != err {
logging.LogErrorf("invoke failed: %s", err)
return
}
if nil != downloadErr {
err = downloadErr
return
}
}
waitGroup.Wait()
p.Release()
downloadBytes = dBytes.Load()
if nil != downloadErr {
err = downloadErr
return
}
return
}
func (repo *Repo) downloadCloudFilesPut(fileIDs []string, context map[string]interface{}) (downloadBytes int64, ret []*entity.File, err error) {
if 1 > len(fileIDs) {
return
}
lock := &sync.Mutex{}
waitGroup := &sync.WaitGroup{}
var downloadErr error
poolSize := repo.cloud.GetConcurrentReqs()
if poolSize > len(fileIDs) {
poolSize = len(fileIDs)
}
count := atomic.Int32{}
dBytes := atomic.Int64{}
total := len(fileIDs)
p, err := ants.NewPoolWithFunc(poolSize, func(arg interface{}) {
defer waitGroup.Done()
if nil != downloadErr {
return // 快速失败
}
fileID := arg.(string)
count.Add(1)
length, file, dcfErr := repo.downloadCloudFile(fileID, int(count.Load()), total, context)
if nil != dcfErr {
downloadErr = dcfErr
return
}
if pfErr := repo.store.PutFile(file); nil != pfErr {
downloadErr = pfErr
return
}
dBytes.Add(length)
lock.Lock()
ret = append(ret, file)
lock.Unlock()
})
if nil != err {
return
}
eventbus.Publish(eventbus.EvtCloudBeforeDownloadFiles, context, total)
for _, fileID := range fileIDs {
waitGroup.Add(1)
if err = p.Invoke(fileID); nil != err {
logging.LogErrorf("invoke failed: %s", err)
return
}
if nil != downloadErr {
err = downloadErr
return
}
}
waitGroup.Wait()
p.Release()
downloadBytes = dBytes.Load()
if nil != downloadErr {
err = downloadErr
return
}
return
}
func (repo *Repo) getFile(files []*entity.File, file *entity.File) *entity.File {
for _, f := range files {
if f.ID == file.ID || f.Path == file.Path {
return f
}
}
return nil
}
func (repo *Repo) updateCloudRef(ref string, context map[string]interface{}) (uploadBytes int64, err error) {
eventbus.Publish(eventbus.EvtCloudBeforeUploadRef, context, ref)
absFilePath := filepath.Join(repo.cloud.GetConf().RepoPath, ref)
data, err := os.ReadFile(absFilePath)
if nil != err {
logging.LogErrorf("read ref [%s] failed: %s", ref, err)
return
}
length, err := repo.cloud.UploadObject(ref, true)
uploadBytes += length
logging.LogInfof("uploaded cloud ref [%s, id=%s]", ref, data)
return
}
var uploadedCloudMissingObjects = false
func (repo *Repo) uploadCloudMissingObjects(trafficStat *TrafficStat, context map[string]interface{}) {
if uploadedCloudMissingObjects {
return
}
uploadedCloudMissingObjects = true
if _, ok := repo.cloud.(*cloud.SiYuan); !ok {
return
}
defer eventbus.Publish(eventbus.EvtCloudAfterFixObjects, context)
checkReportKey := "check/indexes-report"
data, err := repo.cloud.DownloadObject(checkReportKey)
if nil != err {
if errors.Is(err, cloud.ErrCloudObjectNotFound) {
return
}
logging.LogErrorf("download check report failed: %s", err)
return
}
trafficStat.m.Lock()
trafficStat.DownloadFileCount++
trafficStat.DownloadBytes += int64(len(data))
trafficStat.APIGet++
trafficStat.m.Unlock()
data, err = repo.store.compressDecoder.DecodeAll(data, nil)
if nil != err {
logging.LogErrorf("decompress check report failed: %s", err)
return
}
checkReport := &entity.CheckReport{}
if err = gulu.JSON.UnmarshalJSON(data, checkReport); nil != err {
logging.LogErrorf("unmarshal check report failed: %s", err)
return
}
if 1 > len(checkReport.MissingObjects) {
return
}
var missingObjects []string
stillMissingObjects := map[string]bool{}
for _, missingObject := range checkReport.MissingObjects {
logging.LogInfof("cloud missing object [%s]", missingObject)
stillMissingObjects[missingObject] = true
absFilePath := filepath.Join(repo.Path, "objects", missingObject)
info, statErr := os.Stat(absFilePath)
if nil != statErr {
// 本地没有该文件，忽略
logging.LogWarnf("cloud missing object [%s] not found: %s", missingObject, statErr)
continue
}
length := info.Size()
trafficStat.m.Lock()
trafficStat.UploadBytes += length
trafficStat.UploadFileCount++
trafficStat.m.Unlock()
missingObjects = append(missingObjects, missingObject)
}
missingObjects = gulu.Str.RemoveDuplicatedElem(missingObjects)
waitGroup := &sync.WaitGroup{}
var uploadErr error
poolSize := repo.cloud.GetConcurrentReqs()
if poolSize > len(missingObjects) {
poolSize = len(missingObjects)
}
count := atomic.Int32{}
total := len(missingObjects)
lock := sync.Mutex{}
p, err := ants.NewPoolWithFunc(poolSize, func(arg interface{}) {
defer waitGroup.Done()
if nil != uploadErr {