go中的protobuf和grpc使用教程

syntax = "proto3";
import "google/api/annotations.proto";
package main;
option go_package = "/main;student";
message Student {
  string name = 1;
  int32 age = 2;
  repeated int32 scores = 3;
}
service StudentService {
  rpc GetStudent(Student) returns (Student){
    option (google.api.http) = {
      post: "/v1/student/get"
      body: "*"
    };
  };
}

 protoc --proto_path=./third_party --proto_path=.  --go_out=.  --go-grpc_out=.   student.proto 

// 定义提供者
type StudentService struct {
	student.UnimplementedStudentServiceServer `wire:"-"`
}
// 实现提供者方法
func (s *StudentService) GetStudent(context.Context, *student.Student) (*student.Student, error) {
	return &student.Student{
		Age:    18,
		Name:   "vicyor",
		Scores: []int32{1, 2, 3, 4, 5},
	}, nil
}

func main_grpc() {
	serverPort := 50051
	// 创造grpc服务端
	server := grpc.NewServer()
	// 创建listener
	lis, _ := net.Listen("tcp", fmt.Sprintf(":%d", serverPort))
	// 注册grpc服务
	student.RegisterStudentServiceServer(server, &StudentService{})
	// grpc 启动
	server.Serve(lis)
}

func main_grpc() {
    <-time.NewTimer(time.Second * 2).C
	// 这里启动一个消费者
	conn, _ := grpc.NewClient("127.0.0.1:50051", 
    grpc.WithTransportCredentials(insecure.NewCredentials()))
	defer conn.Close()
	cli := student.NewStudentServiceClient(conn)
    // 3秒读超时
	ctx, _ := context.WithTimeout(context.Background(), time.Second*3)
	res, _ := cli.GetStudent(ctx, &student.Student{})
	fmt.Println(res)
}