Qt6.5 grpc組件使用 + golang grpc server示例詳解

更新時間：2023年05月27日 09:52:47 作者：聽我一言

這篇文章主要介紹了Qt6.5 grpc組件使用+golang grpc server示例，本文給大家介紹的非常詳細，對大家的學習或工作具有一定的參考借鑒價值,需要的朋友可以參考下

1. 資料

2. Qt grpc 組件 & 工具

1) Qt6.5 安裝目錄下 xx\Qt\6.5.0\mingw_64\bin

i. qtgrpcgen.exe 將proto轉成Qt 庫 的 grpc客戶端
ii. qtprotobufgen.exe 將proto轉成帶Qt封裝的 的 protobuf接口

2) 指令使用

helloworld.proto 文件

syntax = "proto3";
package helloworld;
message HelloRequest {
  string name = 1;
}
message HelloResponse {
  string message = 1;
}
service HelloService {
  rpc SayHello (HelloRequest) returns (HelloResponse) {}
}
option go_package = "proto/helloworld";

1) 生成Qt封裝的protobuf接口

protoc.exe --plugin=protoc-gen-qtprotobuf=E:\qt599\Qt\6.5.0\mingw_64\bin\qtprotobufgen.exe -I “D:/workspace/Qt/grpc_test/common” --qtprotobuf_out=“D:/workspace/Qt/grpc_test/common” “D:/workspace/Qt/grpc_test/common/helloworld.proto”

2) 生成Qt grpc客戶端

protoc --plugin=protoc-gen-qtgrpc=E:/qt599/Qt/6.5.0/mingw_64/bin/qtgrpcgen.exe --qtgrpc_out=“D:/workspace/Qt/grpc_test/common” -I “D:/workspace/Qt/grpc_test/common” “D:/workspace/Qt/grpc_test/common/helloworld.proto”

3) 客戶端調用代碼

#include <QCoreApplication>
#include <QGrpcInsecureChannelCredentials>
#include "helloworld_client.grpc.qpb.h"
#include <QGrpcHttp2Channel>
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    helloworld::HelloService::Client client;
    auto channel = std::shared_ptr<QAbstractGrpcChannel>(new QGrpcHttp2Channel(
        QUrl("http://localhost:50051",
             QUrl::StrictMode),
        QGrpcInsecureChannelCredentials()
            | QGrpcInsecureCallCredentials()));
    client.attachChannel(channel);
    helloworld::HelloRequest req;
    helloworld::HelloResponse rep;
    req.setName("gray");
    QGrpcStatus status = client.SayHello(req, &rep);
    qDebug() << "Request Result: " << status.code() << status.message();
    qDebug() << "REP : " << rep.message();
    return a.exec();
}

3. Golang服務端

1) 生成golang 帶grpc接口文件

protoc.exe -I D:/workspace/Qt/grpc_test/common --proto_path=“D:/workspace/grpc/protoc/include/google/protobuf” --plugin=protoc-gen-go=D:/workspace/grpc/protoc/bin/protoc-gen-go.exe --go_out=plugins=grpc:D:/workspace/Qt/grpc_test/common D:/workspace/Qt/grpc_test/common/helloworld.proto

2) 示例代碼

再創(chuàng)建一個main.go，調用函數RunServer即可

package proto
import (
	context "context"
	"flag"
	"fmt"
	"log"
	"net"
	grpc "google.golang.org/grpc"
)
var (
	port = flag.Int("port", 50051, "The server port")
)
type Server struct {
	HelloServiceServer
}
// SayHello implements helloworld.GreeterServer
func (s *Server) SayHello(ctx context.Context, in *HelloRequest) (*HelloResponse, error) {
	fmt.Printf("Received: %v\n", in.GetName())
	return &HelloResponse{Message: "Hello " + in.GetName()}, nil
}
func RunServer() error {
	flag.Parse()
	lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port))
	if err != nil {
		log.Fatalf("failed to listen: %v", err)
	}
	s := grpc.NewServer()
	RegisterHelloServiceServer(s, &Server{})
	log.Printf("server listening at %v", lis.Addr())
	if err := s.Serve(lis); err != nil {
		log.Fatalf("failed to serve: %v", err)
	}
	return err
}