fix filer.sync missing source srv uploaded files to target when target down

unmaintained/load_test/load_test_meta_tail/load_test_meta_tail.go

@@ -77,7 +77,7 @@ func startGenerateMetadata() {
 
 func startSubscribeMetadata(eachEntryFunc func(event *filer_pb.SubscribeMetadataResponse) error) {
 
-	tailErr := pb.FollowMetadata(pb.ServerAddress(*tailFiler), grpc.WithInsecure(), "tail", 0, *dir, nil, 0, 0, 0, eachEntryFunc, false)
+	tailErr := pb.FollowMetadata(pb.ServerAddress(*tailFiler), grpc.WithInsecure(), "tail", 0, *dir, nil, 0, 0, 0, eachEntryFunc, pb.TrivialOnError)
 
 	if tailErr != nil {
 		fmt.Printf("tail %s: %v\n", *tailFiler, tailErr)

weed/command/filer_backup.go

@@ -114,6 +114,6 @@ func doFilerBackup(grpcDialOption grpc.DialOption, backupOption *FilerBackupOpti
 		return setOffset(grpcDialOption, sourceFiler, BackupKeyPrefix, int32(sinkId), lastTsNs)
 	})
 
-	return pb.FollowMetadata(sourceFiler, grpcDialOption, "backup_"+dataSink.GetName(), clientId, sourcePath, nil, startFrom.UnixNano(), 0, 0, processEventFnWithOffset, false)
+	return pb.FollowMetadata(sourceFiler, grpcDialOption, "backup_"+dataSink.GetName(), clientId, sourcePath, nil, startFrom.UnixNano(), 0, 0, processEventFnWithOffset, pb.TrivialOnError)
 
 }

weed/command/filer_meta_backup.go

@@ -195,7 +195,7 @@ func (metaBackup *FilerMetaBackupOptions) streamMetadataBackup() error {
 	})
 
 	return pb.FollowMetadata(pb.ServerAddress(*metaBackup.filerAddress), metaBackup.grpcDialOption, "meta_backup", metaBackup.clientId,
-		*metaBackup.filerDirectory, nil, startTime.UnixNano(), 0, 0, processEventFnWithOffset, false)
+		*metaBackup.filerDirectory, nil, startTime.UnixNano(), 0, 0, processEventFnWithOffset, pb.TrivialOnError)
 
 }
 

weed/command/filer_meta_tail.go

@@ -119,7 +119,7 @@ func runFilerMetaTail(cmd *Command, args []string) bool {
 				return err
 			}
 			return nil
-		}, false)
+		}, pb.TrivialOnError)
 
 	if tailErr != nil {
 		fmt.Printf("tail %s: %v\n", *tailFiler, tailErr)

weed/command/filer_remote_gateway_buckets.go

@@ -39,7 +39,7 @@ func (option *RemoteGatewayOptions) followBucketUpdatesAndUploadToRemote(filerSo
 	lastOffsetTs := collectLastSyncOffset(option, option.grpcDialOption, pb.ServerAddress(*option.filerAddress), option.bucketsDir, *option.timeAgo)
 
 	return pb.FollowMetadata(pb.ServerAddress(*option.filerAddress), option.grpcDialOption, "filer.remote.sync", option.clientId,
-		option.bucketsDir, []string{filer.DirectoryEtcRemote}, lastOffsetTs.UnixNano(), 0, 0, processEventFnWithOffset, false)
+		option.bucketsDir, []string{filer.DirectoryEtcRemote}, lastOffsetTs.UnixNano(), 0, 0, processEventFnWithOffset, pb.TrivialOnError)
 }
 
 func (option *RemoteGatewayOptions) makeBucketedEventProcessor(filerSource *source.FilerSource) (pb.ProcessMetadataFunc, error) {

weed/command/filer_remote_sync_dir.go

@@ -41,7 +41,7 @@ func followUpdatesAndUploadToRemote(option *RemoteSyncOptions, filerSource *sour
 	lastOffsetTs := collectLastSyncOffset(option, option.grpcDialOption, pb.ServerAddress(*option.filerAddress), mountedDir, *option.timeAgo)
 
 	return pb.FollowMetadata(pb.ServerAddress(*option.filerAddress), option.grpcDialOption, "filer.remote.sync", option.clientId,
-		mountedDir, []string{filer.DirectoryEtcRemote}, lastOffsetTs.UnixNano(), 0, 0, processEventFnWithOffset, false)
+		mountedDir, []string{filer.DirectoryEtcRemote}, lastOffsetTs.UnixNano(), 0, 0, processEventFnWithOffset, pb.TrivialOnError)
 }
 
 func makeEventProcessor(remoteStorage *remote_pb.RemoteConf, mountedDir string, remoteStorageMountLocation *remote_pb.RemoteStorageLocation, filerSource *source.FilerSource) (pb.ProcessMetadataFunc, error) {

weed/command/filer_sync.go

@@ -178,7 +178,7 @@ func doSubscribeFilerMetaChanges(clientId int32, grpcDialOption grpc.DialOption,
 	})
 
 	return pb.FollowMetadata(sourceFiler, grpcDialOption, "syncTo_"+string(targetFiler), clientId,
-		sourcePath, nil, sourceFilerOffsetTsNs, 0, targetFilerSignature, processEventFnWithOffset, false)
+		sourcePath, nil, sourceFilerOffsetTsNs, 0, targetFilerSignature, processEventFnWithOffset, pb.RetryForeverOnError)
 
 }
 

weed/filer/filer.go

@@ -85,7 +85,7 @@ func (f *Filer) MaybeBootstrapFromPeers(self pb.ServerAddress, existingNodes []*
 	err = pb.FollowMetadata(pb.ServerAddress(earliestNode.Address), f.GrpcDialOption, "bootstrap", int32(f.UniqueFileId), "/", nil,
 		0, snapshotTime.UnixNano(), f.Signature, func(resp *filer_pb.SubscribeMetadataResponse) error {
 			return Replay(f.Store, resp)
-		}, true)
+		}, pb.FatalOnError)
 	return
 }
 

weed/mount/meta_cache/meta_cache_subscribe.go

@@ -58,7 +58,7 @@ func SubscribeMetaEvents(mc *MetaCache, selfSignature int32, client filer_pb.Fil
 	}
 
 	util.RetryForever("followMetaUpdates", func() error {
-		return pb.WithFilerClientFollowMetadata(client, "mount", selfSignature, dir, &lastTsNs, 0, selfSignature, processEventFn, true)
+		return pb.WithFilerClientFollowMetadata(client, "mount", selfSignature, dir, &lastTsNs, 0, selfSignature, processEventFn, pb.FatalOnError)
 	}, func(err error) bool {
 		glog.Errorf("follow metadata updates: %v", err)
 		return true

weed/pb/filer_pb_tail.go

@@ -5,19 +5,28 @@ import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/util"
 	"google.golang.org/grpc"
 	"io"
 	"time"
 )
 
+type EventErrorType int
+
+const (
+	TrivialOnError EventErrorType = iota
+	FatalOnError
+	RetryForeverOnError
+)
+
 type ProcessMetadataFunc func(resp *filer_pb.SubscribeMetadataResponse) error
 
 func FollowMetadata(filerAddress ServerAddress, grpcDialOption grpc.DialOption, clientName string, clientId int32,
 	pathPrefix string, additionalPathPrefixes []string, lastTsNs int64, untilTsNs int64, selfSignature int32,
-	processEventFn ProcessMetadataFunc, fatalOnError bool) error {
+	processEventFn ProcessMetadataFunc, eventErrorType EventErrorType) error {
 
 	err := WithFilerClient(true, filerAddress, grpcDialOption, makeSubscribeMetadataFunc(clientName, clientId,
-		pathPrefix, additionalPathPrefixes, &lastTsNs, untilTsNs, selfSignature, processEventFn, fatalOnError))
+		pathPrefix, additionalPathPrefixes, &lastTsNs, untilTsNs, selfSignature, processEventFn, eventErrorType))
 	if err != nil {
 		return fmt.Errorf("subscribing filer meta change: %v", err)
 	}
@@ -26,10 +35,10 @@ func FollowMetadata(filerAddress ServerAddress, grpcDialOption grpc.DialOption,
 
 func WithFilerClientFollowMetadata(filerClient filer_pb.FilerClient,
 	clientName string, clientId int32, pathPrefix string, lastTsNs *int64, untilTsNs int64, selfSignature int32,
-	processEventFn ProcessMetadataFunc, fatalOnError bool) error {
+	processEventFn ProcessMetadataFunc, eventErrorType EventErrorType) error {
 
 	err := filerClient.WithFilerClient(true, makeSubscribeMetadataFunc(clientName, clientId,
-		pathPrefix, nil, lastTsNs, untilTsNs, selfSignature, processEventFn, fatalOnError))
+		pathPrefix, nil, lastTsNs, untilTsNs, selfSignature, processEventFn, eventErrorType))
 	if err != nil {
 		return fmt.Errorf("subscribing filer meta change: %v", err)
 	}
@@ -38,7 +47,7 @@ func WithFilerClientFollowMetadata(filerClient filer_pb.FilerClient,
 }
 
 func makeSubscribeMetadataFunc(clientName string, clientId int32, pathPrefix string, additionalPathPrefixes []string, lastTsNs *int64, untilTsNs int64, selfSignature int32,
-	processEventFn ProcessMetadataFunc, fatalOnError bool) func(client filer_pb.SeaweedFilerClient) error {
+	processEventFn ProcessMetadataFunc, eventErrorType EventErrorType) func(client filer_pb.SeaweedFilerClient) error {
 	return func(client filer_pb.SeaweedFilerClient) error {
 		ctx, cancel := context.WithCancel(context.Background())
 		defer cancel()
@@ -65,9 +74,19 @@ func makeSubscribeMetadataFunc(clientName string, clientId int32, pathPrefix str
 			}
 
 			if err := processEventFn(resp); err != nil {
-				if fatalOnError {
+				switch eventErrorType {
+				case TrivialOnError:
+					glog.Errorf("process %v: %v", resp, err)
+				case FatalOnError:
 					glog.Fatalf("process %v: %v", resp, err)
-				} else {
+				case RetryForeverOnError:
+					util.RetryForever("followMetaUpdates", func() error {
+						return processEventFn(resp)
+					}, func(err error) bool {
+						glog.Errorf("process %v: %v", resp, err)
+						return true
+					})
+				default:
 					glog.Errorf("process %v: %v", resp, err)
 				}
 			}

weed/s3api/auth_credentials_subscribe.go

@@ -33,7 +33,7 @@ func (s3a *S3ApiServer) subscribeMetaEvents(clientName string, prefix string, la
 	}
 
 	util.RetryForever("followIamChanges", func() error {
-		return pb.WithFilerClientFollowMetadata(s3a, clientName, s3a.randomClientId, prefix, &lastTsNs, 0, 0, processEventFn, true)
+		return pb.WithFilerClientFollowMetadata(s3a, clientName, s3a.randomClientId, prefix, &lastTsNs, 0, 0, processEventFn, pb.FatalOnError)
 	}, func(err error) bool {
 		glog.V(0).Infof("iam follow metadata changes: %v", err)
 		return true