refactoring, go fmt

weed/server/volume_grpc_follow.go

@@ -1,6 +1,7 @@
 package weed_server
 
 import (
+	"context"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"io"
@@ -34,6 +35,19 @@ func (vs *VolumeServer) VolumeFollow(req *volume_server_pb.VolumeFollowRequest,
 
 }
 
+func (vs *VolumeServer) VolumeSyncStatus(ctx context.Context, req *volume_server_pb.VolumeSyncStatusRequest) (*volume_server_pb.VolumeSyncStatusResponse, error) {
+
+	v := vs.store.GetVolume(storage.VolumeId(req.VolumeId))
+	if v == nil {
+		return nil, fmt.Errorf("not found volume id %d", req.VolumeId)
+	}
+
+	resp := v.GetVolumeSyncStatus()
+
+	return resp, nil
+
+}
+
 func sendFileContent(datFile *os.File, buf []byte, startOffset, stopOffset int64, stream volume_server_pb.VolumeServer_VolumeFollowServer) error {
 	var blockSizeLimit = int64(len(buf))
 	for i := int64(0); i < stopOffset-startOffset; i += blockSizeLimit {