go-micro入门实战(一)

[cheerego]

go-micro 入门实战第一篇

目录结构

├── client
│   └── client.go
├── go.mod
├── go.sum
├── main.go
└── proto
    ├── greeter.micro.go 生成文件
    ├── greeter.pb.go 生成文件
    └── greeter.proto 

安装

brew install consul
brew install protobuf

// 非项目目录执行
go get github.com/micro/protoc-gen-micro  
go get github.com/golang/protobuf/protoc-gen-go

greeter.proto

syntax = "proto3";

service Greeter {
    rpc Hello(HelloRequest) returns (HelloResponse) {}
}

message HelloRequest {
    string name = 1;
}

message HelloResponse {
    string greeting = 2;
}

gen

protoc --micro_out=. --go_out=. ./proto/greeter.proto

main.go

package main

import (
	"context"
	"fmt"
	"github.com/micro/go-micro"
	proto "watching/proto"
)

type Greeter struct{}

func (g *Greeter) Hello(ctx context.Context, req *proto.HelloRequest, rsp *proto.HelloResponse) error {
	rsp.Greeting = "Hello " + req.Name
	return nil
}

func main() {
	// Create a new service. Optionally include some options here.
	service := micro.NewService(
		micro.Name("greeter"),
	)

	// Init will parse the command line flags.
	service.Init()

	// Register handler
	proto.RegisterGreeterHandler(service.Server(), new(Greeter))

	// Run the server
	if err := service.Run(); err != nil {
		fmt.Println(err)
	}
}

go get

go get 

运行server

go run main.go

client/client.go

package main

import (
	"context"
	"fmt"
	"github.com/micro/go-micro"
	proto "watching/proto"
)


func main() {
	// Create a new service. Optionally include some options here.
	service := micro.NewService(micro.Name("greeter.client"))
	service.Init()

	// Create new greeter client
	greeter := proto.NewGreeterService("greeter", service.Client())

	// Call the greeter
	rsp, err := greeter.Hello(context.TODO(), &proto.HelloRequest{Name: "John"})
	if err != nil {
		fmt.Println(err)
	}

	// Print response
	fmt.Println(rsp.Greeting)
}

运行Client

go run client/client.go

micro cli

//非项目目录
go get github.com/micro/micro

➜  micro list services                  
greeter