[fs.verify] getmeta data from filer log (#5678)

* initial

* fix: print entry path

weed/shell/command_fs_verify.go

@@ -30,6 +30,7 @@ type commandFsVerify struct {
 	volumeServers      []pb.ServerAddress
 	volumeIds          map[uint32][]pb.ServerAddress
 	verbose            *bool
+	metadataFromLog    *bool
 	concurrency        *int
 	modifyTimeAgoAtSec int64
 	writer             io.Writer
@@ -56,7 +57,7 @@ func (c *commandFsVerify) Do(args []string, commandEnv *CommandEnv, writer io.Wr
 	c.verbose = fsVerifyCommand.Bool("v", false, "print out each processed files")
 	modifyTimeAgo := fsVerifyCommand.Duration("modifyTimeAgo", 0, "only include files after this modify time to verify")
 	c.concurrency = fsVerifyCommand.Int("concurrency", 0, "number of parallel verification per volume server")
-
+	c.metadataFromLog = fsVerifyCommand.Bool("metadataFromLog", false, "Using  filer log to get metadata")
 	if err = fsVerifyCommand.Parse(args); err != nil {
 		return err
 	}
@@ -88,14 +89,18 @@ func (c *commandFsVerify) Do(args []string, commandEnv *CommandEnv, writer io.Wr
 			defer close(c.waitChan[volumeServerStr])
 		}
 	}
-
-	fCount, eConut, terr := c.verifyTraverseBfs(path)
-	if terr == nil {
-		fmt.Fprintf(writer, "verified %d files, error %d files \n", fCount, eConut)
+	var fCount, eConut uint64
+	if *c.metadataFromLog {
+		itemErrCount := atomic.NewUint64(0)
+		var wg sync.WaitGroup
+		fCount, err = c.verifyProcessMetadata(path, itemErrCount, &wg)
+		wg.Wait()
+		eConut = itemErrCount.Load()
+	} else {
+		fCount, eConut, err = c.verifyTraverseBfs(path)
 	}
-
-	return terr
-
+	fmt.Fprintf(writer, "verified %d files, error %d files \n", fCount, eConut)
+	return err
 }
 
 func (c *commandFsVerify) collectVolumeIds() error {
@@ -117,7 +122,7 @@ func (c *commandFsVerify) collectVolumeIds() error {
 	return nil
 }
 
-func (c *commandFsVerify) verifyEntry(volumeServer pb.ServerAddress, fileId *filer_pb.FileId) error {
+func (c *commandFsVerify) verifyChunk(volumeServer pb.ServerAddress, fileId *filer_pb.FileId) error {
 	err := operation.WithVolumeServerClient(false, volumeServer, c.env.option.GrpcDialOption,
 		func(client volume_server_pb.VolumeServerClient) error {
 			_, err := client.VolumeNeedleStatus(context.Background(),
@@ -138,6 +143,94 @@ type ItemEntry struct {
 	path   util.FullPath
 }
 
+func (c *commandFsVerify) verifyProcessMetadata(path string, errorCount *atomic.Uint64, wg *sync.WaitGroup) (fileCount uint64, err error) {
+	processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
+		message := resp.EventNotification
+		if resp.EventNotification.NewEntry == nil || len(message.NewEntry.Chunks) == 0 {
+			return nil
+		}
+		entryPath := fmt.Sprintf("%s/%s", message.NewParentPath, message.NewEntry.Name)
+		if c.verifyEntry(entryPath, message.NewEntry.Chunks, errorCount, wg) {
+			if *c.verbose {
+				fmt.Fprintf(c.writer, "file: %s needles:%d verifed\n", entryPath, len(message.NewEntry.Chunks))
+			}
+			fileCount++
+		}
+		return nil
+	}
+	metadataFollowOption := &pb.MetadataFollowOption{
+		ClientName:             "shell_verify",
+		ClientId:               util.RandomInt32(),
+		ClientEpoch:            0,
+		SelfSignature:          0,
+		PathPrefix:             path,
+		AdditionalPathPrefixes: nil,
+		DirectoriesToWatch:     nil,
+		StartTsNs:              time.Now().Add(-1 * time.Second * time.Duration(c.modifyTimeAgoAtSec)).UnixNano(),
+		StopTsNs:               time.Now().UnixNano(),
+		EventErrorType:         pb.TrivialOnError,
+	}
+	return fileCount, pb.FollowMetadata(c.env.option.FilerAddress, c.env.option.GrpcDialOption, metadataFollowOption, processEventFn)
+}
+
+func (c *commandFsVerify) verifyEntry(path string, chunks []*filer_pb.FileChunk, errorCount *atomic.Uint64, wg *sync.WaitGroup) bool {
+	fileMsg := fmt.Sprintf("file:%s", path)
+	itemIsVerifed := atomic.NewBool(true)
+	for _, chunk := range chunks {
+		if volumeIds, ok := c.volumeIds[chunk.Fid.VolumeId]; ok {
+			for _, volumeServer := range volumeIds {
+				if *c.concurrency == 0 {
+					if err := c.verifyChunk(volumeServer, chunk.Fid); err != nil {
+						fmt.Fprintf(c.writer, "%s failed verify fileId %s: %+v\n",
+							fileMsg, chunk.GetFileIdString(), err)
+						if itemIsVerifed.Load() {
+							itemIsVerifed.Store(false)
+							errorCount.Add(1)
+						}
+					}
+					continue
+				}
+				c.waitChanLock.RLock()
+				waitChan, ok := c.waitChan[string(volumeServer)]
+				c.waitChanLock.RUnlock()
+				if !ok {
+					fmt.Fprintf(c.writer, "%s failed to get channel for %s fileId: %s\n",
+						string(volumeServer), fileMsg, chunk.GetFileIdString())
+					if itemIsVerifed.Load() {
+						itemIsVerifed.Store(false)
+						errorCount.Add(1)
+					}
+					continue
+				}
+				wg.Add(1)
+				waitChan <- struct{}{}
+				go func(fChunk *filer_pb.FileChunk, path string, volumeServer pb.ServerAddress, msg string) {
+					defer wg.Done()
+					if err := c.verifyChunk(volumeServer, fChunk.Fid); err != nil {
+						fmt.Fprintf(c.writer, "%s failed verify fileId %s: %+v\n",
+							msg, fChunk.GetFileIdString(), err)
+						if itemIsVerifed.Load() {
+							itemIsVerifed.Store(false)
+							errorCount.Add(1)
+						}
+					}
+					<-waitChan
+				}(chunk, path, volumeServer, fileMsg)
+			}
+		} else {
+			err := fmt.Errorf("volumeId %d not found", chunk.Fid.VolumeId)
+			fmt.Fprintf(c.writer, "%s failed verify fileId %s: %+v\n",
+				fileMsg, chunk.GetFileIdString(), err)
+			if itemIsVerifed.Load() {
+				itemIsVerifed.Store(false)
+				errorCount.Add(1)
+			}
+			break
+		}
+	}
+	return itemIsVerifed.Load()
+}
+
 func (c *commandFsVerify) verifyTraverseBfs(path string) (fileCount uint64, errCount uint64, err error) {
 	timeNowAtSec := time.Now().Unix()
 	return fileCount, errCount, doTraverseBfsAndSaving(c.env, c.writer, path, false,
@@ -166,63 +259,9 @@ func (c *commandFsVerify) verifyTraverseBfs(path string) (fileCount uint64, errC
 			for itemEntry := range outputChan {
 				i := itemEntry.(*ItemEntry)
 				itemPath := string(i.path)
-				fileMsg := fmt.Sprintf("file:%s", itemPath)
-				itemIsVerifed := atomic.NewBool(true)
-				for _, chunk := range i.chunks {
-					if volumeIds, ok := c.volumeIds[chunk.Fid.VolumeId]; ok {
-						for _, volumeServer := range volumeIds {
-							if *c.concurrency == 0 {
-								if err = c.verifyEntry(volumeServer, chunk.Fid); err != nil {
-									fmt.Fprintf(c.writer, "%s failed verify fileId %s: %+v\n",
-										fileMsg, chunk.GetFileIdString(), err)
-									if itemIsVerifed.Load() {
-										itemIsVerifed.Store(false)
-										itemErrCount.Add(1)
-									}
-								}
-								continue
-							}
-							c.waitChanLock.RLock()
-							waitChan, ok := c.waitChan[string(volumeServer)]
-							c.waitChanLock.RUnlock()
-							if !ok {
-								fmt.Fprintf(c.writer, "%s failed to get channel for %s fileId: %s: %+v\n",
-									string(volumeServer), fileMsg, chunk.GetFileIdString(), err)
-								if itemIsVerifed.Load() {
-									itemIsVerifed.Store(false)
-									itemErrCount.Add(1)
-								}
-								continue
-							}
-							wg.Add(1)
-							waitChan <- struct{}{}
-							go func(fChunk *filer_pb.FileChunk, path string, volumeServer pb.ServerAddress, msg string) {
-								defer wg.Done()
-								if err = c.verifyEntry(volumeServer, fChunk.Fid); err != nil {
-									fmt.Fprintf(c.writer, "%s failed verify fileId %s: %+v\n",
-										msg, fChunk.GetFileIdString(), err)
-									if itemIsVerifed.Load() {
-										itemIsVerifed.Store(false)
-										itemErrCount.Add(1)
-									}
-								}
-								<-waitChan
-							}(chunk, itemPath, volumeServer, fileMsg)
-						}
-					} else {
-						err = fmt.Errorf("volumeId %d not found", chunk.Fid.VolumeId)
-						fmt.Fprintf(c.writer, "%s failed verify fileId %s: %+v\n",
-							fileMsg, chunk.GetFileIdString(), err)
-						if itemIsVerifed.Load() {
-							itemIsVerifed.Store(false)
-							itemErrCount.Add(1)
-						}
-						break
-					}
-				}
-				if itemIsVerifed.Load() {
+				if c.verifyEntry(itemPath, i.chunks, itemErrCount, &wg) {
 					if *c.verbose {
-						fmt.Fprintf(c.writer, "%s needles:%d verifed\n", fileMsg, len(i.chunks))
+						fmt.Fprintf(c.writer, "file: %s needles:%d verifed\n", itemPath, len(i.chunks))
 					}
 					fileCount++
 				}