add distributed lock manager

weed/pb/filer_pb/filer_grpc.pb.go

@@ -42,6 +42,9 @@ type SeaweedFilerClient interface {
 	KvGet(ctx context.Context, in *KvGetRequest, opts ...grpc.CallOption) (*KvGetResponse, error)
 	KvPut(ctx context.Context, in *KvPutRequest, opts ...grpc.CallOption) (*KvPutResponse, error)
 	CacheRemoteObjectToLocalCluster(ctx context.Context, in *CacheRemoteObjectToLocalClusterRequest, opts ...grpc.CallOption) (*CacheRemoteObjectToLocalClusterResponse, error)
+	Lock(ctx context.Context, in *LockRequest, opts ...grpc.CallOption) (*LockResponse, error)
+	Unlock(ctx context.Context, in *UnlockRequest, opts ...grpc.CallOption) (*UnlockResponse, error)
+	TransferLocks(ctx context.Context, in *TransferLocksRequest, opts ...grpc.CallOption) (*TransferLocksResponse, error)
 }
 
 type seaweedFilerClient struct {
@@ -324,6 +327,33 @@ func (c *seaweedFilerClient) CacheRemoteObjectToLocalCluster(ctx context.Context
 	return out, nil
 }
 
+func (c *seaweedFilerClient) Lock(ctx context.Context, in *LockRequest, opts ...grpc.CallOption) (*LockResponse, error) {
+	out := new(LockResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/Lock", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedFilerClient) Unlock(ctx context.Context, in *UnlockRequest, opts ...grpc.CallOption) (*UnlockResponse, error) {
+	out := new(UnlockResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/Unlock", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedFilerClient) TransferLocks(ctx context.Context, in *TransferLocksRequest, opts ...grpc.CallOption) (*TransferLocksResponse, error) {
+	out := new(TransferLocksResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/TransferLocks", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // SeaweedFilerServer is the server API for SeaweedFiler service.
 // All implementations must embed UnimplementedSeaweedFilerServer
 // for forward compatibility
@@ -348,6 +378,9 @@ type SeaweedFilerServer interface {
 	KvGet(context.Context, *KvGetRequest) (*KvGetResponse, error)
 	KvPut(context.Context, *KvPutRequest) (*KvPutResponse, error)
 	CacheRemoteObjectToLocalCluster(context.Context, *CacheRemoteObjectToLocalClusterRequest) (*CacheRemoteObjectToLocalClusterResponse, error)
+	Lock(context.Context, *LockRequest) (*LockResponse, error)
+	Unlock(context.Context, *UnlockRequest) (*UnlockResponse, error)
+	TransferLocks(context.Context, *TransferLocksRequest) (*TransferLocksResponse, error)
 	mustEmbedUnimplementedSeaweedFilerServer()
 }
 
@@ -415,6 +448,15 @@ func (UnimplementedSeaweedFilerServer) KvPut(context.Context, *KvPutRequest) (*K
 func (UnimplementedSeaweedFilerServer) CacheRemoteObjectToLocalCluster(context.Context, *CacheRemoteObjectToLocalClusterRequest) (*CacheRemoteObjectToLocalClusterResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CacheRemoteObjectToLocalCluster not implemented")
 }
+func (UnimplementedSeaweedFilerServer) Lock(context.Context, *LockRequest) (*LockResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Lock not implemented")
+}
+func (UnimplementedSeaweedFilerServer) Unlock(context.Context, *UnlockRequest) (*UnlockResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Unlock not implemented")
+}
+func (UnimplementedSeaweedFilerServer) TransferLocks(context.Context, *TransferLocksRequest) (*TransferLocksResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method TransferLocks not implemented")
+}
 func (UnimplementedSeaweedFilerServer) mustEmbedUnimplementedSeaweedFilerServer() {}
 
 // UnsafeSeaweedFilerServer may be embedded to opt out of forward compatibility for this service.
@@ -800,6 +842,60 @@ func _SeaweedFiler_CacheRemoteObjectToLocalCluster_Handler(srv interface{}, ctx
 	return interceptor(ctx, in, info, handler)
 }
 
+func _SeaweedFiler_Lock_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(LockRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).Lock(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/Lock",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).Lock(ctx, req.(*LockRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedFiler_Unlock_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(UnlockRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).Unlock(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/Unlock",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).Unlock(ctx, req.(*UnlockRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedFiler_TransferLocks_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(TransferLocksRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).TransferLocks(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/TransferLocks",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).TransferLocks(ctx, req.(*TransferLocksRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // SeaweedFiler_ServiceDesc is the grpc.ServiceDesc for SeaweedFiler service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -871,6 +967,18 @@ var SeaweedFiler_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "CacheRemoteObjectToLocalCluster",
 			Handler:    _SeaweedFiler_CacheRemoteObjectToLocalCluster_Handler,
 		},
+		{
+			MethodName: "Lock",
+			Handler:    _SeaweedFiler_Lock_Handler,
+		},
+		{
+			MethodName: "Unlock",
+			Handler:    _SeaweedFiler_Unlock_Handler,
+		},
+		{
+			MethodName: "TransferLocks",
+			Handler:    _SeaweedFiler_TransferLocks_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{