adjust proto

weed/mq/broker/brokder_grpc_pub.go

@@ -93,12 +93,12 @@ func (broker *MessageQueueBroker) Publish(stream mq_pb.SeaweedMessaging_PublishS
 			}
 		} else if initMessage := req.GetInit(); initMessage != nil {
 			localTopicPartition = broker.localTopicManager.GetTopicPartition(
-				topic.NewTopic(topic.Namespace(initMessage.Segment.Namespace), initMessage.Segment.Topic),
-				topic.FromPbPartition(initMessage.Segment.Partition),
+				topic.FromPbTopic(initMessage.Topic),
+				topic.FromPbPartition(initMessage.Partition),
 			)
 			if localTopicPartition == nil {
-				response.Error = fmt.Sprintf("topic partition %v not found", initMessage.Segment)
-				glog.Errorf("topic partition %v not found", initMessage.Segment)
+				response.Error = fmt.Sprintf("topic %v partition %v not found", initMessage.Topic, initMessage.Partition)
+				glog.Errorf("topic %v partition %v not found", initMessage.Topic, initMessage.Partition)
 			}
 		}
 		if err := stream.Send(response); err != nil {

weed/mq/topic/local_partition.go

@@ -14,7 +14,7 @@ type LocalPartition struct {
 	logBuffer       *log_buffer.LogBuffer
 }
 
-func (p LocalPartition) Publish(message *mq_pb.PublishRequest_DataMessage) {
+func (p LocalPartition) Publish(message *mq_pb.DataMessage) {
 	p.logBuffer.AddToBuffer(message.Key, message.Value, time.Now().UnixNano())
 }
 

weed/pb/mq.proto

@@ -34,6 +34,8 @@ service SeaweedMessaging {
     // data plane
     rpc Publish (stream PublishRequest) returns (stream PublishResponse) {
     }
+    rpc Subscribe (stream SubscribeRequest) returns (stream SubscribeResponse) {
+    }
 }
 
 //////////////////////////////////////////////////
@@ -144,14 +146,15 @@ message CheckTopicPartitionsStatusResponse {
 }
 
 //////////////////////////////////////////////////
-message PublishRequest {
-    message InitMessage {
-        Segment segment = 1;
-    }
 message DataMessage {
     bytes key = 1;
     bytes value = 2;
 }
+message PublishRequest {
+    message InitMessage {
+        Topic topic = 1;
+        Partition partition = 2;
+    }
     oneof message {
         InitMessage init = 1;
         DataMessage data = 2;
@@ -163,3 +166,24 @@ message PublishResponse {
     string error = 2;
     bool is_closed = 3;
 }
+message SubscribeRequest {
+    message InitMessage {
+        Topic topic = 1;
+        Partition partition = 2;
+    }
+    oneof message {
+        InitMessage init = 1;
+        DataMessage data = 2;
+    }
+    int64 sequence = 3;
+}
+message SubscribeResponse {
+    message CtrlMessage {
+        string error = 1;
+        string redirect_to_broker = 2;
+    }
+    oneof message {
+        CtrlMessage ctrl = 1;
+        DataMessage data = 2;
+    }
+}

weed/pb/mq_pb/mq.pb.go

@@ -1230,6 +1230,61 @@ func (x *CheckTopicPartitionsStatusResponse) GetTopicPartitionsAssignment() *Top
 }
 
 // ////////////////////////////////////////////////
+type DataMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key   []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *DataMessage) Reset() {
+	*x = DataMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[22]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DataMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DataMessage) ProtoMessage() {}
+
+func (x *DataMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[22]
+	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 DataMessage.ProtoReflect.Descriptor instead.
+func (*DataMessage) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{22}
+}
+
+func (x *DataMessage) GetKey() []byte {
+	if x != nil {
+		return x.Key
+	}
+	return nil
+}
+
+func (x *DataMessage) GetValue() []byte {
+	if x != nil {
+		return x.Value
+	}
+	return nil
+}
+
 type PublishRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1246,7 +1301,7 @@ type PublishRequest struct {
 func (x *PublishRequest) Reset() {
 	*x = PublishRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[22]
+		mi := &file_mq_proto_msgTypes[23]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1259,7 +1314,7 @@ func (x *PublishRequest) String() string {
 func (*PublishRequest) ProtoMessage() {}
 
 func (x *PublishRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[22]
+	mi := &file_mq_proto_msgTypes[23]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1272,7 +1327,7 @@ func (x *PublishRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PublishRequest.ProtoReflect.Descriptor instead.
 func (*PublishRequest) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{22}
+	return file_mq_proto_rawDescGZIP(), []int{23}
 }
 
 func (m *PublishRequest) GetMessage() isPublishRequest_Message {
@@ -1289,7 +1344,7 @@ func (x *PublishRequest) GetInit() *PublishRequest_InitMessage {
 	return nil
 }
 
-func (x *PublishRequest) GetData() *PublishRequest_DataMessage {
+func (x *PublishRequest) GetData() *DataMessage {
 	if x, ok := x.GetMessage().(*PublishRequest_Data); ok {
 		return x.Data
 	}
@@ -1312,7 +1367,7 @@ type PublishRequest_Init struct {
 }
 
 type PublishRequest_Data struct {
-	Data *PublishRequest_DataMessage `protobuf:"bytes,2,opt,name=data,proto3,oneof"`
+	Data *DataMessage `protobuf:"bytes,2,opt,name=data,proto3,oneof"`
 }
 
 func (*PublishRequest_Init) isPublishRequest_Message() {}
@@ -1332,7 +1387,7 @@ type PublishResponse struct {
 func (x *PublishResponse) Reset() {
 	*x = PublishResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[23]
+		mi := &file_mq_proto_msgTypes[24]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1345,7 +1400,7 @@ func (x *PublishResponse) String() string {
 func (*PublishResponse) ProtoMessage() {}
 
 func (x *PublishResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[23]
+	mi := &file_mq_proto_msgTypes[24]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1358,7 +1413,7 @@ func (x *PublishResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PublishResponse.ProtoReflect.Descriptor instead.
 func (*PublishResponse) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{23}
+	return file_mq_proto_rawDescGZIP(), []int{24}
 }
 
 func (x *PublishResponse) GetAckSequence() int64 {
@@ -1382,18 +1437,189 @@ func (x *PublishResponse) GetIsClosed() bool {
 	return false
 }
 
+type SubscribeRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Message:
+	//
+	//	*SubscribeRequest_Init
+	//	*SubscribeRequest_Data
+	Message  isSubscribeRequest_Message `protobuf_oneof:"message"`
+	Sequence int64                      `protobuf:"varint,3,opt,name=sequence,proto3" json:"sequence,omitempty"`
+}
+
+func (x *SubscribeRequest) Reset() {
+	*x = SubscribeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[25]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscribeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscribeRequest) ProtoMessage() {}
+
+func (x *SubscribeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[25]
+	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 SubscribeRequest.ProtoReflect.Descriptor instead.
+func (*SubscribeRequest) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{25}
+}
+
+func (m *SubscribeRequest) GetMessage() isSubscribeRequest_Message {
+	if m != nil {
+		return m.Message
+	}
+	return nil
+}
+
+func (x *SubscribeRequest) GetInit() *SubscribeRequest_InitMessage {
+	if x, ok := x.GetMessage().(*SubscribeRequest_Init); ok {
+		return x.Init
+	}
+	return nil
+}
+
+func (x *SubscribeRequest) GetData() *DataMessage {
+	if x, ok := x.GetMessage().(*SubscribeRequest_Data); ok {
+		return x.Data
+	}
+	return nil
+}
+
+func (x *SubscribeRequest) GetSequence() int64 {
+	if x != nil {
+		return x.Sequence
+	}
+	return 0
+}
+
+type isSubscribeRequest_Message interface {
+	isSubscribeRequest_Message()
+}
+
+type SubscribeRequest_Init struct {
+	Init *SubscribeRequest_InitMessage `protobuf:"bytes,1,opt,name=init,proto3,oneof"`
+}
+
+type SubscribeRequest_Data struct {
+	Data *DataMessage `protobuf:"bytes,2,opt,name=data,proto3,oneof"`
+}
+
+func (*SubscribeRequest_Init) isSubscribeRequest_Message() {}
+
+func (*SubscribeRequest_Data) isSubscribeRequest_Message() {}
+
+type SubscribeResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Message:
+	//
+	//	*SubscribeResponse_Ctrl
+	//	*SubscribeResponse_Data
+	Message isSubscribeResponse_Message `protobuf_oneof:"message"`
+}
+
+func (x *SubscribeResponse) Reset() {
+	*x = SubscribeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[26]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscribeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscribeResponse) ProtoMessage() {}
+
+func (x *SubscribeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[26]
+	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 SubscribeResponse.ProtoReflect.Descriptor instead.
+func (*SubscribeResponse) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{26}
+}
+
+func (m *SubscribeResponse) GetMessage() isSubscribeResponse_Message {
+	if m != nil {
+		return m.Message
+	}
+	return nil
+}
+
+func (x *SubscribeResponse) GetCtrl() *SubscribeResponse_CtrlMessage {
+	if x, ok := x.GetMessage().(*SubscribeResponse_Ctrl); ok {
+		return x.Ctrl
+	}
+	return nil
+}
+
+func (x *SubscribeResponse) GetData() *DataMessage {
+	if x, ok := x.GetMessage().(*SubscribeResponse_Data); ok {
+		return x.Data
+	}
+	return nil
+}
+
+type isSubscribeResponse_Message interface {
+	isSubscribeResponse_Message()
+}
+
+type SubscribeResponse_Ctrl struct {
+	Ctrl *SubscribeResponse_CtrlMessage `protobuf:"bytes,1,opt,name=ctrl,proto3,oneof"`
+}
+
+type SubscribeResponse_Data struct {
+	Data *DataMessage `protobuf:"bytes,2,opt,name=data,proto3,oneof"`
+}
+
+func (*SubscribeResponse_Ctrl) isSubscribeResponse_Message() {}
+
+func (*SubscribeResponse_Data) isSubscribeResponse_Message() {}
+
 type PublishRequest_InitMessage struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Segment *Segment `protobuf:"bytes,1,opt,name=segment,proto3" json:"segment,omitempty"`
+	Topic     *Topic     `protobuf:"bytes,1,opt,name=topic,proto3" json:"topic,omitempty"`
+	Partition *Partition `protobuf:"bytes,2,opt,name=partition,proto3" json:"partition,omitempty"`
 }
 
 func (x *PublishRequest_InitMessage) Reset() {
 	*x = PublishRequest_InitMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[24]
+		mi := &file_mq_proto_msgTypes[27]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1406,7 +1632,7 @@ func (x *PublishRequest_InitMessage) String() string {
 func (*PublishRequest_InitMessage) ProtoMessage() {}
 
 func (x *PublishRequest_InitMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[24]
+	mi := &file_mq_proto_msgTypes[27]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1419,42 +1645,49 @@ func (x *PublishRequest_InitMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PublishRequest_InitMessage.ProtoReflect.Descriptor instead.
 func (*PublishRequest_InitMessage) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{22, 0}
+	return file_mq_proto_rawDescGZIP(), []int{23, 0}
 }
 
-func (x *PublishRequest_InitMessage) GetSegment() *Segment {
+func (x *PublishRequest_InitMessage) GetTopic() *Topic {
 	if x != nil {
-		return x.Segment
+		return x.Topic
 	}
 	return nil
 }
 
-type PublishRequest_DataMessage struct {
+func (x *PublishRequest_InitMessage) GetPartition() *Partition {
+	if x != nil {
+		return x.Partition
+	}
+	return nil
+}
+
+type SubscribeRequest_InitMessage struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Key   []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
-	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+	Topic     *Topic     `protobuf:"bytes,1,opt,name=topic,proto3" json:"topic,omitempty"`
+	Partition *Partition `protobuf:"bytes,2,opt,name=partition,proto3" json:"partition,omitempty"`
 }
 
-func (x *PublishRequest_DataMessage) Reset() {
-	*x = PublishRequest_DataMessage{}
+func (x *SubscribeRequest_InitMessage) Reset() {
+	*x = SubscribeRequest_InitMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[25]
+		mi := &file_mq_proto_msgTypes[28]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
 }
 
-func (x *PublishRequest_DataMessage) String() string {
+func (x *SubscribeRequest_InitMessage) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*PublishRequest_DataMessage) ProtoMessage() {}
+func (*SubscribeRequest_InitMessage) ProtoMessage() {}
 
-func (x *PublishRequest_DataMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[25]
+func (x *SubscribeRequest_InitMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[28]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1465,25 +1698,80 @@ func (x *PublishRequest_DataMessage) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use PublishRequest_DataMessage.ProtoReflect.Descriptor instead.
-func (*PublishRequest_DataMessage) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{22, 1}
+// Deprecated: Use SubscribeRequest_InitMessage.ProtoReflect.Descriptor instead.
+func (*SubscribeRequest_InitMessage) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{25, 0}
 }
 
-func (x *PublishRequest_DataMessage) GetKey() []byte {
+func (x *SubscribeRequest_InitMessage) GetTopic() *Topic {
 	if x != nil {
-		return x.Key
+		return x.Topic
 	}
 	return nil
 }
 
-func (x *PublishRequest_DataMessage) GetValue() []byte {
+func (x *SubscribeRequest_InitMessage) GetPartition() *Partition {
 	if x != nil {
-		return x.Value
+		return x.Partition
 	}
 	return nil
 }
 
+type SubscribeResponse_CtrlMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Error            string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
+	RedirectToBroker string `protobuf:"bytes,2,opt,name=redirect_to_broker,json=redirectToBroker,proto3" json:"redirect_to_broker,omitempty"`
+}
+
+func (x *SubscribeResponse_CtrlMessage) Reset() {
+	*x = SubscribeResponse_CtrlMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[29]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscribeResponse_CtrlMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscribeResponse_CtrlMessage) ProtoMessage() {}
+
+func (x *SubscribeResponse_CtrlMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[29]
+	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 SubscribeResponse_CtrlMessage.ProtoReflect.Descriptor instead.
+func (*SubscribeResponse_CtrlMessage) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{26, 0}
+}
+
+func (x *SubscribeResponse_CtrlMessage) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
+func (x *SubscribeResponse_CtrlMessage) GetRedirectToBroker() string {
+	if x != nil {
+		return x.RedirectToBroker
+	}
+	return ""
+}
+
 var File_mq_proto protoreflect.FileDescriptor
 
 var file_mq_proto_rawDesc = []byte{
@@ -1649,100 +1937,140 @@ var file_mq_proto_rawDesc = []byte{
 	0x61, 0x67, 0x69, 0x6e, 0x67, 0x5f, 0x70, 0x62, 0x2e, 0x54, 0x6f, 0x70, 0x69, 0x63, 0x50, 0x61,
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+	0x6f, 0x6e, 0x73, 0x41, 0x73, 0x73, 0x69, 0x67, 0x6e, 0x6d, 0x65, 0x6e, 0x74, 0x22, 0x35, 0x0a,
+	0x0b, 0x44, 0x61, 0x74, 0x61, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x10, 0x0a, 0x03,
+	0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14,
+	0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x05, 0x76,
+	0x61, 0x6c, 0x75, 0x65, 0x22, 0x99, 0x02, 0x0a, 0x0e, 0x50, 0x75, 0x62, 0x6c, 0x69, 0x73, 0x68,
+	0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x3e, 0x0a, 0x04, 0x69, 0x6e, 0x69, 0x74, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x28, 0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x69, 0x6e,
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+	0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x19, 0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x69, 0x6e,
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 }
 
 var (
@@ -1757,7 +2085,7 @@ func file_mq_proto_rawDescGZIP() []byte {
 	return file_mq_proto_rawDescData
 }
 
-var file_mq_proto_msgTypes = make([]protoimpl.MessageInfo, 26)
+var file_mq_proto_msgTypes = make([]protoimpl.MessageInfo, 30)
 var file_mq_proto_goTypes = []interface{}{
 	(*SegmentInfo)(nil),                        // 0: messaging_pb.SegmentInfo
 	(*FindBrokerLeaderRequest)(nil),            // 1: messaging_pb.FindBrokerLeaderRequest
@@ -1781,10 +2109,14 @@ var file_mq_proto_goTypes = []interface{}{
 	(*AssignTopicPartitionsResponse)(nil),      // 19: messaging_pb.AssignTopicPartitionsResponse
 	(*CheckTopicPartitionsStatusRequest)(nil),  // 20: messaging_pb.CheckTopicPartitionsStatusRequest
 	(*CheckTopicPartitionsStatusResponse)(nil), // 21: messaging_pb.CheckTopicPartitionsStatusResponse
-	(*PublishRequest)(nil),                     // 22: messaging_pb.PublishRequest
-	(*PublishResponse)(nil),                    // 23: messaging_pb.PublishResponse
-	(*PublishRequest_InitMessage)(nil),         // 24: messaging_pb.PublishRequest.InitMessage
-	(*PublishRequest_DataMessage)(nil),         // 25: messaging_pb.PublishRequest.DataMessage
+	(*DataMessage)(nil),                        // 22: messaging_pb.DataMessage
+	(*PublishRequest)(nil),                     // 23: messaging_pb.PublishRequest
+	(*PublishResponse)(nil),                    // 24: messaging_pb.PublishResponse
+	(*SubscribeRequest)(nil),                   // 25: messaging_pb.SubscribeRequest
+	(*SubscribeResponse)(nil),                  // 26: messaging_pb.SubscribeResponse
+	(*PublishRequest_InitMessage)(nil),         // 27: messaging_pb.PublishRequest.InitMessage
+	(*SubscribeRequest_InitMessage)(nil),       // 28: messaging_pb.SubscribeRequest.InitMessage
+	(*SubscribeResponse_CtrlMessage)(nil),      // 29: messaging_pb.SubscribeResponse.CtrlMessage
 }
 var file_mq_proto_depIdxs = []int32{
 	5,  // 0: messaging_pb.SegmentInfo.segment:type_name -> messaging_pb.Segment
@@ -1801,32 +2133,41 @@ var file_mq_proto_depIdxs = []int32{
 	15, // 11: messaging_pb.AssignTopicPartitionsRequest.topic_partitions_assignment:type_name -> messaging_pb.TopicPartitionsAssignment
 	14, // 12: messaging_pb.CheckTopicPartitionsStatusRequest.broker_partitions_assignment:type_name -> messaging_pb.BrokerPartitionsAssignment
 	15, // 13: messaging_pb.CheckTopicPartitionsStatusResponse.topic_partitions_assignment:type_name -> messaging_pb.TopicPartitionsAssignment
-	24, // 14: messaging_pb.PublishRequest.init:type_name -> messaging_pb.PublishRequest.InitMessage
-	25, // 15: messaging_pb.PublishRequest.data:type_name -> messaging_pb.PublishRequest.DataMessage
-	5,  // 16: messaging_pb.PublishRequest.InitMessage.segment:type_name -> messaging_pb.Segment
-	1,  // 17: messaging_pb.SeaweedMessaging.FindBrokerLeader:input_type -> messaging_pb.FindBrokerLeaderRequest
-	6,  // 18: messaging_pb.SeaweedMessaging.AssignSegmentBrokers:input_type -> messaging_pb.AssignSegmentBrokersRequest
-	8,  // 19: messaging_pb.SeaweedMessaging.CheckSegmentStatus:input_type -> messaging_pb.CheckSegmentStatusRequest
-	10, // 20: messaging_pb.SeaweedMessaging.CheckBrokerLoad:input_type -> messaging_pb.CheckBrokerLoadRequest
-	12, // 21: messaging_pb.SeaweedMessaging.FindTopicBrokers:input_type -> messaging_pb.FindTopicBrokersRequest
-	16, // 22: messaging_pb.SeaweedMessaging.RequestTopicPartitions:input_type -> messaging_pb.RequestTopicPartitionsRequest
-	18, // 23: messaging_pb.SeaweedMessaging.AssignTopicPartitions:input_type -> messaging_pb.AssignTopicPartitionsRequest
-	20, // 24: messaging_pb.SeaweedMessaging.CheckTopicPartitionsStatus:input_type -> messaging_pb.CheckTopicPartitionsStatusRequest
-	22, // 25: messaging_pb.SeaweedMessaging.Publish:input_type -> messaging_pb.PublishRequest
-	2,  // 26: messaging_pb.SeaweedMessaging.FindBrokerLeader:output_type -> messaging_pb.FindBrokerLeaderResponse
-	7,  // 27: messaging_pb.SeaweedMessaging.AssignSegmentBrokers:output_type -> messaging_pb.AssignSegmentBrokersResponse
-	9,  // 28: messaging_pb.SeaweedMessaging.CheckSegmentStatus:output_type -> messaging_pb.CheckSegmentStatusResponse
-	11, // 29: messaging_pb.SeaweedMessaging.CheckBrokerLoad:output_type -> messaging_pb.CheckBrokerLoadResponse
-	13, // 30: messaging_pb.SeaweedMessaging.FindTopicBrokers:output_type -> messaging_pb.FindTopicBrokersResponse
-	17, // 31: messaging_pb.SeaweedMessaging.RequestTopicPartitions:output_type -> messaging_pb.RequestTopicPartitionsResponse
-	19, // 32: messaging_pb.SeaweedMessaging.AssignTopicPartitions:output_type -> messaging_pb.AssignTopicPartitionsResponse
-	21, // 33: messaging_pb.SeaweedMessaging.CheckTopicPartitionsStatus:output_type -> messaging_pb.CheckTopicPartitionsStatusResponse
-	23, // 34: messaging_pb.SeaweedMessaging.Publish:output_type -> messaging_pb.PublishResponse
-	26, // [26:35] is the sub-list for method output_type
-	17, // [17:26] is the sub-list for method input_type
-	17, // [17:17] is the sub-list for extension type_name
-	17, // [17:17] is the sub-list for extension extendee
-	0,  // [0:17] is the sub-list for field type_name
+	27, // 14: messaging_pb.PublishRequest.init:type_name -> messaging_pb.PublishRequest.InitMessage
+	22, // 15: messaging_pb.PublishRequest.data:type_name -> messaging_pb.DataMessage
+	28, // 16: messaging_pb.SubscribeRequest.init:type_name -> messaging_pb.SubscribeRequest.InitMessage
+	22, // 17: messaging_pb.SubscribeRequest.data:type_name -> messaging_pb.DataMessage
+	29, // 18: messaging_pb.SubscribeResponse.ctrl:type_name -> messaging_pb.SubscribeResponse.CtrlMessage
+	22, // 19: messaging_pb.SubscribeResponse.data:type_name -> messaging_pb.DataMessage
+	3,  // 20: messaging_pb.PublishRequest.InitMessage.topic:type_name -> messaging_pb.Topic
+	4,  // 21: messaging_pb.PublishRequest.InitMessage.partition:type_name -> messaging_pb.Partition
+	3,  // 22: messaging_pb.SubscribeRequest.InitMessage.topic:type_name -> messaging_pb.Topic
+	4,  // 23: messaging_pb.SubscribeRequest.InitMessage.partition:type_name -> messaging_pb.Partition
+	1,  // 24: messaging_pb.SeaweedMessaging.FindBrokerLeader:input_type -> messaging_pb.FindBrokerLeaderRequest
+	6,  // 25: messaging_pb.SeaweedMessaging.AssignSegmentBrokers:input_type -> messaging_pb.AssignSegmentBrokersRequest
+	8,  // 26: messaging_pb.SeaweedMessaging.CheckSegmentStatus:input_type -> messaging_pb.CheckSegmentStatusRequest
+	10, // 27: messaging_pb.SeaweedMessaging.CheckBrokerLoad:input_type -> messaging_pb.CheckBrokerLoadRequest
+	12, // 28: messaging_pb.SeaweedMessaging.FindTopicBrokers:input_type -> messaging_pb.FindTopicBrokersRequest
+	16, // 29: messaging_pb.SeaweedMessaging.RequestTopicPartitions:input_type -> messaging_pb.RequestTopicPartitionsRequest
+	18, // 30: messaging_pb.SeaweedMessaging.AssignTopicPartitions:input_type -> messaging_pb.AssignTopicPartitionsRequest
+	20, // 31: messaging_pb.SeaweedMessaging.CheckTopicPartitionsStatus:input_type -> messaging_pb.CheckTopicPartitionsStatusRequest
+	23, // 32: messaging_pb.SeaweedMessaging.Publish:input_type -> messaging_pb.PublishRequest
+	25, // 33: messaging_pb.SeaweedMessaging.Subscribe:input_type -> messaging_pb.SubscribeRequest
+	2,  // 34: messaging_pb.SeaweedMessaging.FindBrokerLeader:output_type -> messaging_pb.FindBrokerLeaderResponse
+	7,  // 35: messaging_pb.SeaweedMessaging.AssignSegmentBrokers:output_type -> messaging_pb.AssignSegmentBrokersResponse
+	9,  // 36: messaging_pb.SeaweedMessaging.CheckSegmentStatus:output_type -> messaging_pb.CheckSegmentStatusResponse
+	11, // 37: messaging_pb.SeaweedMessaging.CheckBrokerLoad:output_type -> messaging_pb.CheckBrokerLoadResponse
+	13, // 38: messaging_pb.SeaweedMessaging.FindTopicBrokers:output_type -> messaging_pb.FindTopicBrokersResponse
+	17, // 39: messaging_pb.SeaweedMessaging.RequestTopicPartitions:output_type -> messaging_pb.RequestTopicPartitionsResponse
+	19, // 40: messaging_pb.SeaweedMessaging.AssignTopicPartitions:output_type -> messaging_pb.AssignTopicPartitionsResponse
+	21, // 41: messaging_pb.SeaweedMessaging.CheckTopicPartitionsStatus:output_type -> messaging_pb.CheckTopicPartitionsStatusResponse
+	24, // 42: messaging_pb.SeaweedMessaging.Publish:output_type -> messaging_pb.PublishResponse
+	26, // 43: messaging_pb.SeaweedMessaging.Subscribe:output_type -> messaging_pb.SubscribeResponse
+	34, // [34:44] is the sub-list for method output_type
+	24, // [24:34] is the sub-list for method input_type
+	24, // [24:24] is the sub-list for extension type_name
+	24, // [24:24] is the sub-list for extension extendee
+	0,  // [0:24] is the sub-list for field type_name
 }
 
 func init() { file_mq_proto_init() }
@@ -2100,7 +2441,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PublishRequest); i {
+			switch v := v.(*DataMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2112,7 +2453,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PublishResponse); i {
+			switch v := v.(*PublishRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2124,7 +2465,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PublishRequest_InitMessage); i {
+			switch v := v.(*PublishResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2136,7 +2477,19 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PublishRequest_DataMessage); i {
+			switch v := v.(*SubscribeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscribeResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2147,18 +2500,62 @@ func file_mq_proto_init() {
 				return nil
 			}
 		}
+		file_mq_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PublishRequest_InitMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
 		}
-	file_mq_proto_msgTypes[22].OneofWrappers = []interface{}{
+		file_mq_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscribeRequest_InitMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscribeResponse_CtrlMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_mq_proto_msgTypes[23].OneofWrappers = []interface{}{
 		(*PublishRequest_Init)(nil),
 		(*PublishRequest_Data)(nil),
 	}
+	file_mq_proto_msgTypes[25].OneofWrappers = []interface{}{
+		(*SubscribeRequest_Init)(nil),
+		(*SubscribeRequest_Data)(nil),
+	}
+	file_mq_proto_msgTypes[26].OneofWrappers = []interface{}{
+		(*SubscribeResponse_Ctrl)(nil),
+		(*SubscribeResponse_Data)(nil),
+	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_mq_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   26,
+			NumMessages:   30,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

weed/pb/mq_pb/mq_grpc.pb.go

@@ -35,6 +35,7 @@ type SeaweedMessagingClient interface {
 	CheckTopicPartitionsStatus(ctx context.Context, in *CheckTopicPartitionsStatusRequest, opts ...grpc.CallOption) (*CheckTopicPartitionsStatusResponse, error)
 	// data plane
 	Publish(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_PublishClient, error)
+	Subscribe(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_SubscribeClient, error)
 }
 
 type seaweedMessagingClient struct {
@@ -148,6 +149,37 @@ func (x *seaweedMessagingPublishClient) Recv() (*PublishResponse, error) {
 	return m, nil
 }
 
+func (c *seaweedMessagingClient) Subscribe(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_SubscribeClient, error) {
+	stream, err := c.cc.NewStream(ctx, &SeaweedMessaging_ServiceDesc.Streams[1], "/messaging_pb.SeaweedMessaging/Subscribe", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedMessagingSubscribeClient{stream}
+	return x, nil
+}
+
+type SeaweedMessaging_SubscribeClient interface {
+	Send(*SubscribeRequest) error
+	Recv() (*SubscribeResponse, error)
+	grpc.ClientStream
+}
+
+type seaweedMessagingSubscribeClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedMessagingSubscribeClient) Send(m *SubscribeRequest) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *seaweedMessagingSubscribeClient) Recv() (*SubscribeResponse, error) {
+	m := new(SubscribeResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
 // SeaweedMessagingServer is the server API for SeaweedMessaging service.
 // All implementations must embed UnimplementedSeaweedMessagingServer
 // for forward compatibility
@@ -165,6 +197,7 @@ type SeaweedMessagingServer interface {
 	CheckTopicPartitionsStatus(context.Context, *CheckTopicPartitionsStatusRequest) (*CheckTopicPartitionsStatusResponse, error)
 	// data plane
 	Publish(SeaweedMessaging_PublishServer) error
+	Subscribe(SeaweedMessaging_SubscribeServer) error
 	mustEmbedUnimplementedSeaweedMessagingServer()
 }
 
@@ -199,6 +232,9 @@ func (UnimplementedSeaweedMessagingServer) CheckTopicPartitionsStatus(context.Co
 func (UnimplementedSeaweedMessagingServer) Publish(SeaweedMessaging_PublishServer) error {
 	return status.Errorf(codes.Unimplemented, "method Publish not implemented")
 }
+func (UnimplementedSeaweedMessagingServer) Subscribe(SeaweedMessaging_SubscribeServer) error {
+	return status.Errorf(codes.Unimplemented, "method Subscribe not implemented")
+}
 func (UnimplementedSeaweedMessagingServer) mustEmbedUnimplementedSeaweedMessagingServer() {}
 
 // UnsafeSeaweedMessagingServer may be embedded to opt out of forward compatibility for this service.
@@ -382,6 +418,32 @@ func (x *seaweedMessagingPublishServer) Recv() (*PublishRequest, error) {
 	return m, nil
 }
 
+func _SeaweedMessaging_Subscribe_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(SeaweedMessagingServer).Subscribe(&seaweedMessagingSubscribeServer{stream})
+}
+
+type SeaweedMessaging_SubscribeServer interface {
+	Send(*SubscribeResponse) error
+	Recv() (*SubscribeRequest, error)
+	grpc.ServerStream
+}
+
+type seaweedMessagingSubscribeServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedMessagingSubscribeServer) Send(m *SubscribeResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *seaweedMessagingSubscribeServer) Recv() (*SubscribeRequest, error) {
+	m := new(SubscribeRequest)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
 // SeaweedMessaging_ServiceDesc is the grpc.ServiceDesc for SeaweedMessaging service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -429,6 +491,12 @@ var SeaweedMessaging_ServiceDesc = grpc.ServiceDesc{
 			ServerStreams: true,
 			ClientStreams: true,
 		},
+		{
+			StreamName:    "Subscribe",
+			Handler:       _SeaweedMessaging_Subscribe_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
 	},
 	Metadata: "mq.proto",
 }