filer: cross cluster synchronization

1 files changed, 22 insertions, 5 deletions

diff --git a/weed/replication/replicator.go b/weed/replication/replicator.go
index 051199adb..e0535175e 100644
--- a/weed/replication/replicator.go
+++ b/weed/replication/replicator.go
@@ -3,6 +3,8 @@ package replication
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"google.golang.org/grpc"
 	"strings"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -43,28 +45,43 @@ func (r *Replicator) Replicate(ctx context.Context, key string, message *filer_p
 	key = newKey
 	if message.OldEntry != nil && message.NewEntry == nil {
 		glog.V(4).Infof("deleting %v", key)
-		return r.sink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks)
+		return r.sink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
 	}
 	if message.OldEntry == nil && message.NewEntry != nil {
 		glog.V(4).Infof("creating %v", key)
-		return r.sink.CreateEntry(key, message.NewEntry)
+		return r.sink.CreateEntry(key, message.NewEntry, message.Signatures)
 	}
 	if message.OldEntry == nil && message.NewEntry == nil {
 		glog.V(0).Infof("weird message %+v", message)
 		return nil
 	}
 
-	foundExisting, err := r.sink.UpdateEntry(key, message.OldEntry, message.NewParentPath, message.NewEntry, message.DeleteChunks)
+	foundExisting, err := r.sink.UpdateEntry(key, message.OldEntry, message.NewParentPath, message.NewEntry, message.DeleteChunks, message.Signatures)
 	if foundExisting {
 		glog.V(4).Infof("updated %v", key)
 		return err
 	}
 
-	err = r.sink.DeleteEntry(key, message.OldEntry.IsDirectory, false)
+	err = r.sink.DeleteEntry(key, message.OldEntry.IsDirectory, false, message.Signatures)
 	if err != nil {
 		return fmt.Errorf("delete old entry %v: %v", key, err)
 	}
 
 	glog.V(4).Infof("creating missing %v", key)
-	return r.sink.CreateEntry(key, message.NewEntry)
+	return r.sink.CreateEntry(key, message.NewEntry, message.Signatures)
 }
+
+func ReadFilerSignature(grpcDialOption grpc.DialOption, filer string) (filerSignature int32, readErr error) {
+	if readErr = pb.WithFilerClient(filer, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+		if resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{}); err != nil {
+			return fmt.Errorf("GetFilerConfiguration %s: %v", filer, err)
+		} else {
+			filerSignature = resp.Signature
+		}
+		return nil
+	}); readErr != nil {
+		return 0, readErr
+	}
+	return filerSignature, nil
+}
+