use fixed list of masters in both filer and volume servers

weed/pb/master_pb/seaweed.pb.go

@@ -12,6 +12,7 @@ It has these top-level messages:
 	Heartbeat
 	HeartbeatResponse
 	VolumeInformationMessage
+	Empty
 */
 package master_pb
 
@@ -235,10 +236,19 @@ func (m *VolumeInformationMessage) GetTtl() uint32 {
 	return 0
 }
 
+type Empty struct {
+}
+
+func (m *Empty) Reset()                    { *m = Empty{} }
+func (m *Empty) String() string            { return proto.CompactTextString(m) }
+func (*Empty) ProtoMessage()               {}
+func (*Empty) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
 func init() {
 	proto.RegisterType((*Heartbeat)(nil), "master_pb.Heartbeat")
 	proto.RegisterType((*HeartbeatResponse)(nil), "master_pb.HeartbeatResponse")
 	proto.RegisterType((*VolumeInformationMessage)(nil), "master_pb.VolumeInformationMessage")
+	proto.RegisterType((*Empty)(nil), "master_pb.Empty")
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -253,6 +263,7 @@ const _ = grpc.SupportPackageIsVersion4
 
 type SeaweedClient interface {
 	SendHeartbeat(ctx context.Context, opts ...grpc.CallOption) (Seaweed_SendHeartbeatClient, error)
+	KeepConnected(ctx context.Context, opts ...grpc.CallOption) (Seaweed_KeepConnectedClient, error)
 }
 
 type seaweedClient struct {
@@ -294,10 +305,42 @@ func (x *seaweedSendHeartbeatClient) Recv() (*HeartbeatResponse, error) {
 	return m, nil
 }
 
+func (c *seaweedClient) KeepConnected(ctx context.Context, opts ...grpc.CallOption) (Seaweed_KeepConnectedClient, error) {
+	stream, err := grpc.NewClientStream(ctx, &_Seaweed_serviceDesc.Streams[1], c.cc, "/master_pb.Seaweed/KeepConnected", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedKeepConnectedClient{stream}
+	return x, nil
+}
+
+type Seaweed_KeepConnectedClient interface {
+	Send(*Empty) error
+	Recv() (*Empty, error)
+	grpc.ClientStream
+}
+
+type seaweedKeepConnectedClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedKeepConnectedClient) Send(m *Empty) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *seaweedKeepConnectedClient) Recv() (*Empty, error) {
+	m := new(Empty)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
 // Server API for Seaweed service
 
 type SeaweedServer interface {
 	SendHeartbeat(Seaweed_SendHeartbeatServer) error
+	KeepConnected(Seaweed_KeepConnectedServer) error
 }
 
 func RegisterSeaweedServer(s *grpc.Server, srv SeaweedServer) {
@@ -330,6 +373,32 @@ func (x *seaweedSendHeartbeatServer) Recv() (*Heartbeat, error) {
 	return m, nil
 }
 
+func _Seaweed_KeepConnected_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(SeaweedServer).KeepConnected(&seaweedKeepConnectedServer{stream})
+}
+
+type Seaweed_KeepConnectedServer interface {
+	Send(*Empty) error
+	Recv() (*Empty, error)
+	grpc.ServerStream
+}
+
+type seaweedKeepConnectedServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedKeepConnectedServer) Send(m *Empty) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *seaweedKeepConnectedServer) Recv() (*Empty, error) {
+	m := new(Empty)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
 var _Seaweed_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "master_pb.Seaweed",
 	HandlerType: (*SeaweedServer)(nil),
@@ -341,6 +410,12 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
 			ServerStreams: true,
 			ClientStreams: true,
 		},
+		{
+			StreamName:    "KeepConnected",
+			Handler:       _Seaweed_KeepConnected_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
 	},
 	Metadata: "seaweed.proto",
 }
@@ -348,37 +423,39 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("seaweed.proto", fileDescriptor0) }
 
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