[golang]-golang容器调用redis容器

导语：笔记。使用redis和go进行容器间交互的测试

mani.go

package main

import (
	"fmt"
	"log"
	"net/http"
	"os"
	"time"

	"github.com/gomodule/redigo/redis"
)

func main() {
	addr := "0.0.0.0:80"
	// var redisAddr = "127.0.0.1="
	// var redisPort = "6379"
	// var redisPassword = ""
	// redis.Dial("tcp","redis:6379")

	redisAddr, ok := os.LookupEnv("MY_REDIS_ADDR")
	if !ok {
		redisAddr = "127.0.0.1"
	}

	redisPort, ok := os.LookupEnv(("MY_REDIS_PORT"))
	if !ok {
		redisPort = "6379"
	}

	redisPassword, ok := os.LookupEnv(("MY_REDIS_PASSWORD"))
	if !ok {
		redisPassword = ""
	}

	redisClient, err := redis.Dial("tcp", fmt.Sprintf("%s:%s", redisAddr, redisPort), redis.DialPassword(redisPassword))
	
	if err != nil {
		log.Fatal(err)
	}

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		visit, _ := redis.Int(redisClient.Do("INCR", "visit"))
		hostname, _ := os.Hostname()
		// visit, _ := redis.Int(redisClient.Do("INCR", "visit"))
		fmt.Fprintf(w, "%s: %s :%d", hostname, time.Now().Format("2006-01-02 15:04:05"), visit)
	})

	http.ListenAndServe(addr, nil)

}

Dockerfile

FROM ubuntu:18.04
MAINTAINER xujiamin
# 声明需要暴露的端口
EXPOSE 80
# web 编译结果是二进制文件
ADD web /opt/web/
ENTRYPOINT [ "/opt/web/web" ]

编译

docker run -it -v $PWD:/opt/web/ -e  GOPROXY=https://goproxy.cn    golang:1.17.6  bash -c "cd /opt/web;go get github.com/gomodule/redigo/redis;go build ."
docker build . -t woshidaxu/web:0.0.2 

运行

docker run -itd --name web -p 9999:80 -e MY_REDIS_ADDR=redis --link=redis woshidaxu/web:0.0.2                                                             
b4a9601b7e8ee78cbe78e753f9d540ce9e522c00a16bf5d105c22e1f05b38ac2

直接通过curl访问 浏览器访问我这个数字是以2往上加的，应该是算上了favicon.ico

curl http://localhost:9999/