allow one2many for ListContainers

internal/machine/api/pb/docker.pb.go

@@ -256,13 +256,13 @@ func (x *ListContainersRequest) GetOptions() []byte {
 	return nil
 }
 
+// ListContainersResponse structure allows broadcasting ListContainers requests to multiple machines.
 type ListContainersResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	// JSON serialized []container.Summary.
+	Messages []*MachineContainers `protobuf:"bytes,1,rep,name=messages,proto3" json:"messages,omitempty"`
-	Containers []byte `protobuf:"bytes,1,opt,name=containers,proto3" json:"containers,omitempty"`
 }
 
 func (x *ListContainersResponse) Reset() {
@@ -297,7 +297,63 @@ func (*ListContainersResponse) Descriptor() ([]byte, []int) {
 	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{4}
 }
 
-func (x *ListContainersResponse) GetContainers() []byte {
+func (x *ListContainersResponse) GetMessages() []*MachineContainers {
+	if x != nil {
+		return x.Messages
+	}
+	return nil
+}
+
+type MachineContainers struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	// JSON serialized []container.Summary.
+	Containers []byte `protobuf:"bytes,2,opt,name=containers,proto3" json:"containers,omitempty"`
+}
+
+func (x *MachineContainers) Reset() {
+	*x = MachineContainers{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_docker_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MachineContainers) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MachineContainers) ProtoMessage() {}
+
+func (x *MachineContainers) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_docker_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MachineContainers.ProtoReflect.Descriptor instead.
+func (*MachineContainers) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *MachineContainers) GetMetadata() *Metadata {
+	if x != nil {
+		return x.Metadata
+	}
+	return nil
+}
+
+func (x *MachineContainers) GetContainers() []byte {
 	if x != nil {
 		return x.Containers
 	}
@@ -317,7 +373,7 @@ type RemoveContainerRequest struct {
 func (x *RemoveContainerRequest) Reset() {
 	*x = RemoveContainerRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_docker_proto_msgTypes[5]
+		mi := &file_internal_machine_api_pb_docker_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -330,7 +386,7 @@ func (x *RemoveContainerRequest) String() string {
 func (*RemoveContainerRequest) ProtoMessage() {}
 
 func (x *RemoveContainerRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_docker_proto_msgTypes[5]
+	mi := &file_internal_machine_api_pb_docker_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -343,7 +399,7 @@ func (x *RemoveContainerRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RemoveContainerRequest.ProtoReflect.Descriptor instead.
 func (*RemoveContainerRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{5}
+	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *RemoveContainerRequest) GetId() string {
@@ -373,7 +429,7 @@ type PullImageRequest struct {
 func (x *PullImageRequest) Reset() {
 	*x = PullImageRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_docker_proto_msgTypes[6]
+		mi := &file_internal_machine_api_pb_docker_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -386,7 +442,7 @@ func (x *PullImageRequest) String() string {
 func (*PullImageRequest) ProtoMessage() {}
 
 func (x *PullImageRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_docker_proto_msgTypes[6]
+	mi := &file_internal_machine_api_pb_docker_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -399,7 +455,7 @@ func (x *PullImageRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PullImageRequest.ProtoReflect.Descriptor instead.
 func (*PullImageRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{6}
+	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *PullImageRequest) GetImage() string {
@@ -428,7 +484,7 @@ type JSONMessage struct {
 func (x *JSONMessage) Reset() {
 	*x = JSONMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_docker_proto_msgTypes[7]
+		mi := &file_internal_machine_api_pb_docker_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -441,7 +497,7 @@ func (x *JSONMessage) String() string {
 func (*JSONMessage) ProtoMessage() {}
 
 func (x *JSONMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_docker_proto_msgTypes[7]
+	mi := &file_internal_machine_api_pb_docker_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -454,7 +510,7 @@ func (x *JSONMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use JSONMessage.ProtoReflect.Descriptor instead.
 func (*JSONMessage) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{7}
+	return file_internal_machine_api_pb_docker_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *JSONMessage) GetMessage() []byte {
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 }
 
 var (
@@ -549,34 +614,38 @@ func file_internal_machine_api_pb_docker_proto_rawDescGZIP() []byte {
 	return file_internal_machine_api_pb_docker_proto_rawDescData
 }
 
-var file_internal_machine_api_pb_docker_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_internal_machine_api_pb_docker_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
 var file_internal_machine_api_pb_docker_proto_goTypes = []any{
 	(*CreateContainerRequest)(nil),  // 0: api.CreateContainerRequest
 	(*CreateContainerResponse)(nil), // 1: api.CreateContainerResponse
 	(*StartContainerRequest)(nil),   // 2: api.StartContainerRequest
 	(*ListContainersRequest)(nil),   // 3: api.ListContainersRequest
 	(*ListContainersResponse)(nil),  // 4: api.ListContainersResponse
-	(*RemoveContainerRequest)(nil),  // 5: api.RemoveContainerRequest
+	(*MachineContainers)(nil),       // 5: api.MachineContainers
-	(*PullImageRequest)(nil),        // 6: api.PullImageRequest
+	(*RemoveContainerRequest)(nil),  // 6: api.RemoveContainerRequest
-	(*JSONMessage)(nil),             // 7: api.JSONMessage
+	(*PullImageRequest)(nil),        // 7: api.PullImageRequest
-	(*emptypb.Empty)(nil),           // 8: google.protobuf.Empty
+	(*JSONMessage)(nil),             // 8: api.JSONMessage
+	(*Metadata)(nil),                // 9: api.Metadata
+	(*emptypb.Empty)(nil),           // 10: google.protobuf.Empty
 }
 var file_internal_machine_api_pb_docker_proto_depIdxs = []int32{
-	0, // 0: api.Docker.CreateContainer:input_type -> api.CreateContainerRequest
+	5,  // 0: api.ListContainersResponse.messages:type_name -> api.MachineContainers
-	2, // 1: api.Docker.StartContainer:input_type -> api.StartContainerRequest
+	9,  // 1: api.MachineContainers.metadata:type_name -> api.Metadata
-	3, // 2: api.Docker.ListContainers:input_type -> api.ListContainersRequest
+	0,  // 2: api.Docker.CreateContainer:input_type -> api.CreateContainerRequest
-	5, // 3: api.Docker.RemoveContainer:input_type -> api.RemoveContainerRequest
+	2,  // 3: api.Docker.StartContainer:input_type -> api.StartContainerRequest
-	6, // 4: api.Docker.PullImage:input_type -> api.PullImageRequest
+	3,  // 4: api.Docker.ListContainers:input_type -> api.ListContainersRequest
-	1, // 5: api.Docker.CreateContainer:output_type -> api.CreateContainerResponse
+	6,  // 5: api.Docker.RemoveContainer:input_type -> api.RemoveContainerRequest
-	8, // 6: api.Docker.StartContainer:output_type -> google.protobuf.Empty
+	7,  // 6: api.Docker.PullImage:input_type -> api.PullImageRequest
-	4, // 7: api.Docker.ListContainers:output_type -> api.ListContainersResponse
+	1,  // 7: api.Docker.CreateContainer:output_type -> api.CreateContainerResponse
-	8, // 8: api.Docker.RemoveContainer:output_type -> google.protobuf.Empty
+	10, // 8: api.Docker.StartContainer:output_type -> google.protobuf.Empty
-	7, // 9: api.Docker.PullImage:output_type -> api.JSONMessage
+	4,  // 9: api.Docker.ListContainers:output_type -> api.ListContainersResponse
-	5, // [5:10] is the sub-list for method output_type
+	10, // 10: api.Docker.RemoveContainer:output_type -> google.protobuf.Empty
-	0, // [0:5] is the sub-list for method input_type
+	8,  // 11: api.Docker.PullImage:output_type -> api.JSONMessage
-	0, // [0:0] is the sub-list for extension type_name
+	7,  // [7:12] is the sub-list for method output_type
-	0, // [0:0] is the sub-list for extension extendee
+	2,  // [2:7] is the sub-list for method input_type
-	0, // [0:0] is the sub-list for field type_name
+	2,  // [2:2] is the sub-list for extension type_name
+	2,  // [2:2] is the sub-list for extension extendee
+	0,  // [0:2] is the sub-list for field type_name
 }
 
 func init() { file_internal_machine_api_pb_docker_proto_init() }
@@ -584,6 +653,7 @@ func file_internal_machine_api_pb_docker_proto_init() {
 	if File_internal_machine_api_pb_docker_proto != nil {
 		return
 	}
+	file_internal_machine_api_pb_common_proto_init()
 	if !protoimpl.UnsafeEnabled {
 		file_internal_machine_api_pb_docker_proto_msgTypes[0].Exporter = func(v any, i int) any {
 			switch v := v.(*CreateContainerRequest); i {
@@ -646,7 +716,7 @@ func file_internal_machine_api_pb_docker_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_docker_proto_msgTypes[5].Exporter = func(v any, i int) any {
-			switch v := v.(*RemoveContainerRequest); i {
+			switch v := v.(*MachineContainers); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -658,7 +728,7 @@ func file_internal_machine_api_pb_docker_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_docker_proto_msgTypes[6].Exporter = func(v any, i int) any {
-			switch v := v.(*PullImageRequest); i {
+			switch v := v.(*RemoveContainerRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -670,6 +740,18 @@ func file_internal_machine_api_pb_docker_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_docker_proto_msgTypes[7].Exporter = func(v any, i int) any {
+			switch v := v.(*PullImageRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_docker_proto_msgTypes[8].Exporter = func(v any, i int) any {
 			switch v := v.(*JSONMessage); i {
 			case 0:
 				return &v.state
@@ -688,7 +770,7 @@ func file_internal_machine_api_pb_docker_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_internal_machine_api_pb_docker_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   8,
+			NumMessages:   9,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

internal/machine/api/pb/docker.proto

@@ -5,6 +5,7 @@ package api;
 option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
 
 import "google/protobuf/empty.proto";
+import "internal/machine/api/pb/common.proto";
 
 service Docker {
   rpc CreateContainer(CreateContainerRequest) returns (CreateContainerResponse);
@@ -42,9 +43,15 @@ message ListContainersRequest {
   bytes options = 1;
 }
 
+// ListContainersResponse structure allows broadcasting ListContainers requests to multiple machines.
 message ListContainersResponse {
+  repeated MachineContainers messages = 1;
+}
+
+message MachineContainers {
+  Metadata metadata = 1;
   // JSON serialized []container.Summary.
-  bytes containers = 1;
+  bytes containers = 2;
 }
 
 message RemoveContainerRequest {

internal/machine/docker/client.go

@@ -107,7 +107,12 @@ func (c *Client) StartContainer(ctx context.Context, id string, opts container.S
 	return err
 }
 
-func (c *Client) ListContainers(ctx context.Context, opts container.ListOptions) ([]types.Container, error) {
+type MachineContainers struct {
+	Metadata   *pb.Metadata
+	Containers []types.Container
+}
+
+func (c *Client) ListContainers(ctx context.Context, opts container.ListOptions) ([]MachineContainers, error) {
 	optsBytes, err := json.Marshal(opts)
 	if err != nil {
 		return nil, fmt.Errorf("marshal options: %w", err)
@@ -118,12 +123,15 @@ func (c *Client) ListContainers(ctx context.Context, opts container.ListOptions)
 		return nil, err
 	}
 
-	var containers []types.Container
+	machineContainers := make([]MachineContainers, len(resp.Messages))
-	if err = json.Unmarshal(resp.Containers, &containers); err != nil {
+	for i, msg := range resp.Messages {
-		return nil, fmt.Errorf("unmarshal containers: %w", err)
+		machineContainers[i].Metadata = msg.Metadata
+		if err = json.Unmarshal(msg.Containers, &machineContainers[i].Containers); err != nil {
+			return nil, fmt.Errorf("unmarshal containers: %w", err)
+		}
 	}
 
-	return containers, nil
+	return machineContainers, nil
 }
 
 // RemoveContainer stops (kills after grace period) and removes a container with the given ID.

internal/machine/docker/server.go

@@ -100,7 +100,11 @@ func (s *Server) ListContainers(ctx context.Context, req *pb.ListContainersReque
 	}
 
 	return &pb.ListContainersResponse{
-		Containers: containersBytes,
+		Messages: []*pb.MachineContainers{
+			{
+				Containers: containersBytes,
+			},
+		},
 	}, nil
 }