feat: add dubbo3 demo

general/dubbo3/protobuf/dubbo3/helloworld.proto

@@ -0,0 +1,45 @@
+// Copyright 2015 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "org.apache.dubbo";
+option java_outer_classname = "HelloWorldProto";
+option objc_class_prefix = "HLW";
+
+package protobuf;
+
+// The greeting service definition.
+service Dubbo3Greeter {
+  // Sends a greeting
+  rpc Dubbo3SayHello (stream Dubbo3HelloRequest) returns (stream Dubbo3HelloReply) {}
+  rpc Dubbo3SayHello2 ( Dubbo3HelloRequest) returns ( Dubbo3HelloReply) {}
+  rpc BigStreamTest (stream BigData) returns ( stream BigData){}
+  rpc BigUnaryTest (BigData) returns (BigData){}
+}
+
+// The request message containing the user's name.
+message Dubbo3HelloRequest {
+  string myname = 1;
+}
+
+// The response message containing the greetings
+message Dubbo3HelloReply {
+  string msg = 1;
+}
+
+message BigData {
+  bytes data = 1;
+  int32 wantSize = 2;
+}

general/dubbo3/protobuf/dubbo3/protobuf.mk

@@ -0,0 +1,26 @@
+.PHONY: compile
+PROTOC_GEN_GO := $(GOPATH)/bin/protoc-gen-go
+PROTOC := $(shell which protoc)
+ifeq ($(PROTOC),)
+	PROTOC = must-rebuild
+endif
+
+UNAME := $(shell uname)
+
+$(PROTOC):
+ifeq ($(UNAME), Darwin)
+	brew install protobuf
+endif
+ifeq ($(UNAME), Linux)
+	sudo apt-get install protobuf-compiler
+endif
+
+$(PROTOC_GEN_GO):
+	go get -u github.com/apache/dubbo-go/protocol/dubbo3/protoc-gen-dubbo3
+
+helloworld.pb.go: helloworld.proto | $(PROTOC_GEN_GO) $(PROTOC)
+	protoc -I . helloworld.proto --dubbo3_out=plugins=grpc+dubbo:.
+
+.PHONY: compile
+compile: helloworld.pb.go
+