为你的golang程序插上docker_compose的翅膀

  • 构建一个简单的http服务,使用redis的get，set方法
  • 使用docker_compose构建一个agent服务，redis服务并使用networks

服务端代码

var rd *redis.Client
func main() {
	InitRedis()
	http.HandleFunc("/", func(writer http.ResponseWriter, request *http.Request) {
		_, _ = fmt.Fprintf(writer, "hello world")
	})
	http.HandleFunc("/set", func(writer http.ResponseWriter, request *http.Request) {
		_ = request.ParseForm()
		key := request.Form.Get("key")
		val := request.Form.Get("val")
		fmt.Println("set >>>>>>  ", "key", key, "val", val)
		if key == "" {
			_, _ = writer.Write([]byte("参数错误"))
			return
		}
		if err := rd.Set(key, val, time.Second*60).Err(); err != nil {
			_, _ = writer.Write([]byte(err.Error()))
			return
		}
		_, _ = writer.Write([]byte("操作成功"))
	})
	http.HandleFunc("/get", func(writer http.ResponseWriter, request *http.Request) {
		_ = request.ParseForm()
		key := request.Form.Get("key")
		fmt.Println("get >>>>>>  ", "key", key)
		if key == "" {
			_, _ = writer.Write([]byte("参数错误"))
			return
		}
		info, err := rd.Get(key).Result()
		if err != nil {
			_, _ = writer.Write([]byte(err.Error()))
			return
		}
		_, _ = writer.Write([]byte(info))
	})
	fmt.Println("服务启动成功 监听端口 9999")
	er := http.ListenAndServe("0.0.0.0:9999", nil)
	if er != nil {
		fmt.Println("ListenAndServe: ", er)
	}
}
func InitRedis() {
	rd = redis.NewClient(
		&redis.Options{
			Addr:         "redis:6379",
			DialTimeout:  10 * time.Second,
			ReadTimeout:  30 * time.Second,
			WriteTimeout: 30 * time.Second,
			Password:     "123456",
			PoolSize:     100,
		},
	)
	err := rd.Ping().Err()
	if nil != err {
		fmt.Println(err)
		return
	}
}

工程目录

├── agent
├── build.sh
├── docker-compose.yml
├── Dockerfile
└── docker.go

构建agent服务的Dockerfile

  • 编译agent服务
CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' -o agent .
  • 编写Dockerfile
FROM scratch
MAINTAINER hwholiday
ADD agent /server/http/
ENTRYPOINT ["/server/http/agent"]

编写docker-compose.yml

version: "3"
services:
  agent:
    hostname: "agent"
    container_name: agent
    restart: always
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "9999:9999"
    #等redis启动了再启动agent服务
    depends_on:
      - redis
    networks:
      - back
  redis:
    image: redis
    hostname: "redis"
    container_name: redis
    restart: always
    volumes:
      - /home/ghost/redis:/data
    command: redis-server --requirepass 123456
    networks:
      - back
networks:
  back:

运行

## 编译服务
sudo docker-compose -f docker-compose.yml up
## 编译某一个服务
sudo docker-compose -f docker-compose.yml up agent
## 卸载服务
sudo docker-compose -f docker-compose.yml down

结语

  • docker-compose的用法还有很多，这里只展示简单的使用，更加高级的功能欢迎大家一起讨论
  • 欢迎添加QQ一起讨论

完整代码地址

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