refactoring

5 files changed, 128 insertions, 126 deletions

diff --git a/weed/operation/tail_volume.go b/weed/operation/tail_volume.go
index 7de9acad1..b53f18ce1 100644
--- a/weed/operation/tail_volume.go
+++ b/weed/operation/tail_volume.go
@@ -22,16 +22,16 @@ func TailVolume(master string, grpcDialOption grpc.DialOption, vid needle.Volume
 
 	volumeServer := lookup.Locations[0].Url
 
-	return TailVolumeFromServer(volumeServer, grpcDialOption, vid, sinceNs, timeoutSeconds, fn)
+	return TailVolumeFromSource(volumeServer, grpcDialOption, vid, sinceNs, timeoutSeconds, fn)
 }
 
-func TailVolumeFromServer(volumeServer string, grpcDialOption grpc.DialOption, vid needle.VolumeId, sinceNs uint64, timeoutSeconds int, fn func(n *needle.Needle) error) error {
+func TailVolumeFromSource(volumeServer string, grpcDialOption grpc.DialOption, vid needle.VolumeId, sinceNs uint64, idleTimeoutSeconds int, fn func(n *needle.Needle) error) error {
 	return WithVolumeServerClient(volumeServer, grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
 
 		stream, err := client.VolumeTailSender(context.Background(), &volume_server_pb.VolumeTailSenderRequest{
-			VolumeId:        uint32(vid),
-			SinceNs:         sinceNs,
-			DrainingSeconds: uint32(timeoutSeconds),
+			VolumeId:           uint32(vid),
+			SinceNs:            sinceNs,
+			IdleTimeoutSeconds: uint32(idleTimeoutSeconds),
 		})
 		if err != nil {
 			return err
diff --git a/weed/pb/volume_server.proto b/weed/pb/volume_server.proto
index 9c63c199c..ec4f09ef1 100644
--- a/weed/pb/volume_server.proto
+++ b/weed/pb/volume_server.proto
@@ -174,7 +174,7 @@ message CopyFileResponse {
 message VolumeTailSenderRequest {
     uint32 volume_id = 1;
     uint64 since_ns = 2;
-    uint32 drainingSeconds = 3;
+    uint32 idle_timeout_seconds = 3;
 }
 message VolumeTailSenderResponse {
     bytes needle_header = 1;
@@ -185,7 +185,7 @@ message VolumeTailSenderResponse {
 message VolumeTailReceiverRequest {
     uint32 volume_id = 1;
     uint64 since_ns = 2;
-    uint32 drainingSeconds = 3;
+    uint32 idle_timeout_seconds = 3;
     string source_volume_server = 4;
 }
 message VolumeTailReceiverResponse {
diff --git a/weed/pb/volume_server_pb/volume_server.pb.go b/weed/pb/volume_server_pb/volume_server.pb.go
index 58afb217f..30419967b 100644
--- a/weed/pb/volume_server_pb/volume_server.pb.go
+++ b/weed/pb/volume_server_pb/volume_server.pb.go
@@ -663,9 +663,9 @@ func (m *CopyFileResponse) GetFileContent() []byte {
 }
 
 type VolumeTailSenderRequest struct {
-	VolumeId        uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
-	SinceNs         uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs" json:"since_ns,omitempty"`
-	DrainingSeconds uint32 `protobuf:"varint,3,opt,name=drainingSeconds" json:"drainingSeconds,omitempty"`
+	VolumeId           uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
+	SinceNs            uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs" json:"since_ns,omitempty"`
+	IdleTimeoutSeconds uint32 `protobuf:"varint,3,opt,name=idle_timeout_seconds,json=idleTimeoutSeconds" json:"idle_timeout_seconds,omitempty"`
 }
 
 func (m *VolumeTailSenderRequest) Reset()                    { *m = VolumeTailSenderRequest{} }
@@ -687,9 +687,9 @@ func (m *VolumeTailSenderRequest) GetSinceNs() uint64 {
 	return 0
 }
 
-func (m *VolumeTailSenderRequest) GetDrainingSeconds() uint32 {
+func (m *VolumeTailSenderRequest) GetIdleTimeoutSeconds() uint32 {
 	if m != nil {
-		return m.DrainingSeconds
+		return m.IdleTimeoutSeconds
 	}
 	return 0
 }
@@ -729,7 +729,7 @@ func (m *VolumeTailSenderResponse) GetIsLastChunk() bool {
 type VolumeTailReceiverRequest struct {
 	VolumeId           uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
 	SinceNs            uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs" json:"since_ns,omitempty"`
-	DrainingSeconds    uint32 `protobuf:"varint,3,opt,name=drainingSeconds" json:"drainingSeconds,omitempty"`
+	IdleTimeoutSeconds uint32 `protobuf:"varint,3,opt,name=idle_timeout_seconds,json=idleTimeoutSeconds" json:"idle_timeout_seconds,omitempty"`
 	SourceVolumeServer string `protobuf:"bytes,4,opt,name=source_volume_server,json=sourceVolumeServer" json:"source_volume_server,omitempty"`
 }
 
@@ -752,9 +752,9 @@ func (m *VolumeTailReceiverRequest) GetSinceNs() uint64 {
 	return 0
 }
 
-func (m *VolumeTailReceiverRequest) GetDrainingSeconds() uint32 {
+func (m *VolumeTailReceiverRequest) GetIdleTimeoutSeconds() uint32 {
 	if m != nil {
-		return m.DrainingSeconds
+		return m.IdleTimeoutSeconds
 	}
 	return 0
 }
@@ -1696,96 +1696,96 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
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+	0x09, 0x00, 0x00, 0xff, 0xff, 0x5d, 0xcf, 0xff, 0x14, 0x4c, 0x14, 0x00, 0x00,
 }
diff --git a/weed/server/volume_grpc_tail.go b/weed/server/volume_grpc_tail.go
index 16154c9cc..820c28a1d 100644
--- a/weed/server/volume_grpc_tail.go
+++ b/weed/server/volume_grpc_tail.go
@@ -22,7 +22,7 @@ func (vs *VolumeServer) VolumeTailSender(req *volume_server_pb.VolumeTailSenderR
 	defer glog.V(1).Infof("tailing volume %d finished", v.Id)
 
 	lastTimestampNs := req.SinceNs
-	drainingSeconds := req.DrainingSeconds
+	drainingSeconds := req.IdleTimeoutSeconds
 
 	for {
 		lastProcessedTimestampNs, err := sendNeedlesSince(stream, v, lastTimestampNs)
@@ -32,7 +32,7 @@ func (vs *VolumeServer) VolumeTailSender(req *volume_server_pb.VolumeTailSenderR
 		}
 		time.Sleep(2 * time.Second)
 
-		if req.DrainingSeconds == 0 {
+		if req.IdleTimeoutSeconds == 0 {
 			lastTimestampNs = lastProcessedTimestampNs
 			continue
 		}
@@ -44,7 +44,7 @@ func (vs *VolumeServer) VolumeTailSender(req *volume_server_pb.VolumeTailSenderR
 			glog.V(1).Infof("tailing volume %d drains requests with %d seconds remaining", v.Id, drainingSeconds)
 		} else {
 			lastTimestampNs = lastProcessedTimestampNs
-			drainingSeconds = req.DrainingSeconds
+			drainingSeconds = req.IdleTimeoutSeconds
 			glog.V(1).Infof("tailing volume %d resets draining wait time to %d seconds", v.Id, drainingSeconds)
 		}
 
@@ -110,7 +110,7 @@ func (vs *VolumeServer) VolumeTailReceiver(ctx context.Context, req *volume_serv
 
 	defer glog.V(1).Infof("receive tailing volume %d finished", v.Id)
 
-	return resp, operation.TailVolumeFromServer(req.SourceVolumeServer, vs.grpcDialOption, v.Id, req.SinceNs, int(req.DrainingSeconds), func(n *needle.Needle) error {
+	return resp, operation.TailVolumeFromSource(req.SourceVolumeServer, vs.grpcDialOption, v.Id, req.SinceNs, int(req.IdleTimeoutSeconds), func(n *needle.Needle) error {
 		_, err := vs.store.Write(v.Id, n)
 		return err
 	})
diff --git a/weed/shell/command_volume_move.go b/weed/shell/command_volume_move.go
index 771f345ac..77c21980e 100644
--- a/weed/shell/command_volume_move.go
+++ b/weed/shell/command_volume_move.go
@@ -18,7 +18,6 @@ func init() {
 }
 
 type commandVolumeMove struct {
-	grpcDialOption grpc.DialOption
 }
 
 func (c *commandVolumeMove) Name() string {
@@ -49,9 +48,6 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *commandEnv, writer io.
 		fmt.Fprintf(writer, "received args: %+v\n", args)
 		return fmt.Errorf("need 3 args of <source volume server host:port> <target volume server host:port> <volume id>")
 	}
-	c.grpcDialOption = commandEnv.option.GrpcDialOption
-	ctx := context.Background()
-
 	sourceVolumeServer, targetVolumeServer, volumeIdString := args[0], args[1], args[2]
 
 	volumeId, err := needle.NewVolumeId(volumeIdString)
@@ -63,30 +59,36 @@ func (c *commandVolumeMove) Do(args []string, commandEnv *commandEnv, writer io.
 		return fmt.Errorf("source and target volume servers are the same!")
 	}
 
+	ctx := context.Background()
+	return LiveMoveVolume(ctx, commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, 5*time.Second)
+}
+
+// LiveMoveVolume moves one volume from one source volume server to one target volume server, with idleTimeout to drain the incoming requests.
+func LiveMoveVolume(ctx context.Context, grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, idleTimeout time.Duration) (err error) {
+
 	log.Printf("copying volume %d from %s to %s", volumeId, sourceVolumeServer, targetVolumeServer)
-	lastAppendAtNs, err := c.copyVolume(ctx, volumeId, sourceVolumeServer, targetVolumeServer)
+	lastAppendAtNs, err := copyVolume(ctx, grpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer)
 	if err != nil {
 		return fmt.Errorf("copy volume %d from %s to %s: %v", volumeId, sourceVolumeServer, targetVolumeServer, err)
 	}
 
 	log.Printf("tailing volume %d from %s to %s", volumeId, sourceVolumeServer, targetVolumeServer)
-	if err = c.tailVolume(ctx, volumeId, sourceVolumeServer, targetVolumeServer, lastAppendAtNs, 5*time.Second); err != nil {
+	if err = tailVolume(ctx, grpcDialOption, volumeId, sourceVolumeServer, targetVolumeServer, lastAppendAtNs, idleTimeout); err != nil {
 		return fmt.Errorf("tail volume %d from %s to %s: %v", volumeId, sourceVolumeServer, targetVolumeServer, err)
 	}
 
 	log.Printf("deleting volume %d from %s", volumeId, sourceVolumeServer)
-	if err = c.deleteVolume(ctx, volumeId, sourceVolumeServer); err != nil {
+	if err = deleteVolume(ctx, grpcDialOption, volumeId, sourceVolumeServer); err != nil {
 		return fmt.Errorf("delete volume %d from %s: %v", volumeId, sourceVolumeServer, err)
 	}
 
 	log.Printf("moved volume %d from %s to %s", volumeId, sourceVolumeServer, targetVolumeServer)
-
 	return nil
 }
 
-func (c *commandVolumeMove) copyVolume(ctx context.Context, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string) (lastAppendAtNs uint64, err error) {
+func copyVolume(ctx context.Context, grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string) (lastAppendAtNs uint64, err error) {
 
-	err = operation.WithVolumeServerClient(targetVolumeServer, c.grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
+	err = operation.WithVolumeServerClient(targetVolumeServer, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
 		resp, replicateErr := volumeServerClient.VolumeCopy(ctx, &volume_server_pb.VolumeCopyRequest{
 			VolumeId:       uint32(volumeId),
 			SourceDataNode: sourceVolumeServer,
@@ -100,13 +102,13 @@ func (c *commandVolumeMove) copyVolume(ctx context.Context, volumeId needle.Volu
 	return
 }
 
-func (c *commandVolumeMove) tailVolume(ctx context.Context, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, lastAppendAtNs uint64, timeout time.Duration) (err error) {
+func tailVolume(ctx context.Context, grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer, targetVolumeServer string, lastAppendAtNs uint64, idleTimeout time.Duration) (err error) {
 
-	return operation.WithVolumeServerClient(targetVolumeServer, c.grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
+	return operation.WithVolumeServerClient(targetVolumeServer, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
 		_, replicateErr := volumeServerClient.VolumeTailReceiver(ctx, &volume_server_pb.VolumeTailReceiverRequest{
 			VolumeId:           uint32(volumeId),
 			SinceNs:            lastAppendAtNs,
-			DrainingSeconds:    uint32(timeout.Seconds()),
+			IdleTimeoutSeconds: uint32(idleTimeout.Seconds()),
 			SourceVolumeServer: sourceVolumeServer,
 		})
 		return replicateErr
@@ -114,8 +116,8 @@ func (c *commandVolumeMove) tailVolume(ctx context.Context, volumeId needle.Volu
 
 }
 
-func (c *commandVolumeMove) deleteVolume(ctx context.Context, volumeId needle.VolumeId, sourceVolumeServer string) (err error) {
-	return operation.WithVolumeServerClient(sourceVolumeServer, c.grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
+func deleteVolume(ctx context.Context, grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer string) (err error) {
+	return operation.WithVolumeServerClient(sourceVolumeServer, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
 		_, unmountErr := volumeServerClient.VolumeDelete(ctx, &volume_server_pb.VolumeDeleteRequest{
 			VolumeId: uint32(volumeId),
 		})