rabbitMQ安装与简单demo

安装

mac安装有了brew很方便，windows的可参考 win10 安装rabbitMQ详细步骤

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brew install rabbitmq

启动

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brew services start rabbitmq

关闭

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brew services stop rabbitmq

出了问题之后可以重启一下

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brew services restart rabbitmq

some issue

某些库下载超时

比如我安装过程中，发现libpng总是下不来

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brew --cache -s libpng

输出如下

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/Users/andydennis/Library/Caches/Homebrew/downloads/52af0b46c4798c4335195c9e01af657e58b8cb7f3d0fbcad1a753c3aff1ecc93--libpng-1.6.43.tar.xz

手动装一下

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mv libpng-1.6.43.tar.xz "$(brew --cache -s libpng)"

然后

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brew install libpng

Failed to connect to raw.githubusercontent.com port 443: Connection refused

报错信息

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Fetching openssl@3
==> Downloading https://raw.githubusercontent.com/Homebrew/homebrew-core/32addad

curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused
Error: rabbitmq: Failed to download resource "openssl@3.rb"

可能是ip解析问题，查询一下 https://www.ipaddress.com/ ,

发现地址是 185.199.108.133, 185.199.109.133, 185.199.110.133和185.199.111.133, 于是打开/etc/hosts 文件

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sudo vim /etc/hosts

添加下面语句

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185.199.108.133 raw.githubusercontent.com
185.199.109.133 raw.githubusercontent.com
185.199.110.133 raw.githubusercontent.com
185.199.111.133 raw.githubusercontent.com

不得不说，mac比win慢多了，最后终于装成功了

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==>rabbitmq
Management UI: http://localhost:15672
Homebrew-specific docs: https://rabbitmq.com/install-homebrew.html

To start rabbitmq now and restart at login:
  brew services start rabbitmq
Or, if you don't want/need a background service you can just run:
  CONF_ENV_FILE="/opt/homebrew/etc/rabbitmq/rabbitmq-env.conf" /opt/homebrew/opt/rabbitmq/sbin/rabbitmq-server

配置

激活一下组件 rabbitmq-plugins enable rabbitmq_management

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andydennis@andydennisdeMBP ~ % rabbitmq-plugins enable rabbitmq_management
Enabling plugins on node rabbit@localhost:
rabbitmq_management
The following plugins have been configured:
  rabbitmq_amqp1_0
  rabbitmq_management
  rabbitmq_management_agent
  rabbitmq_mqtt
  rabbitmq_stomp
  rabbitmq_stream
  rabbitmq_web_dispatch
Applying plugin configuration to rabbit@localhost...
Plugin configuration unchanged.

开启 brew services start rabbitmq, 访问 http://localhost:15672

初始用户名和密码都是guest

判断有无开启成功可查看端口5672 (默认端口，若修改了则按修改的端口) 有无无监听

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andydennis@andydennisdeMBP ~ % lsof -i :5672
COMMAND    PID       USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
beam.smp 68981 andydennis   62u  IPv4 0x226aed36751b928f      0t0  TCP localhost:amqp (LISTEN)

code

依赖

在一个新文件夹，先 go mod init go-rabbitmq 再 go mod tidy下更新一下依赖。

编写代码

consumer.go

go 复制代码

package main

import "go-rabbitmq/rabbitmq"

func main() {

	rabbitMQ := rabbitmq.NewSimpleRabbitMQ("test-one")

	rabbitMQ.Consumer()
}

producer.go

go 复制代码

package main

import (
	"fmt"
	"strconv"
	"time"

	"go-rabbitmq/rabbitmq"
)

func main() {
	rabbitMQ := rabbitmq.NewSimpleRabbitMQ("test-one")

	for i := 0; i < 100000; i++ {
		time.Sleep(1000 * time.Millisecond)
		rabbitMQ.Publish("新消息 " + strconv.Itoa(i))
		fmt.Println("发送成功")
	}
}

rabbitmq.go

go 复制代码

package rabbitmq

import (
	"fmt"
	"log"

	"github.com/streadway/amqp"
)

const MQURL = "amqp://guest:guest@localhost:5672"

type RabbitMQ struct {
	conn      *amqp.Connection
	channel   *amqp.Channel
	queueName string
	exchange  string
	key       string
	mqurl     string
}

func NewRabbitMQ(queueName string, exchange string, key string) *RabbitMQ {

	rabbitMQ := &RabbitMQ{
		queueName: queueName,
		exchange:  exchange,
		key:       key,
		mqurl:     MQURL,
	}

	dial, err := amqp.Dial(rabbitMQ.mqurl)
	rabbitMQ.failOnErr(err, "创建连接失败")
	rabbitMQ.conn = dial

	rabbitMQ.channel, err = rabbitMQ.conn.Channel()
	rabbitMQ.failOnErr(err, "获取通道失败")

	return rabbitMQ
}

func (r *RabbitMQ) failOnErr(err error, message string) {
	if err != nil {
		log.Fatalf("%s:%s\n", err, message)
		panic(fmt.Sprintf("%s:%s\n", err, message))
	}
}

func (r *RabbitMQ) destory() {
	r.channel.Close()
	r.conn.Close()
}

func NewSimpleRabbitMQ(queueName string) *RabbitMQ {

	return NewRabbitMQ(queueName, "", "")
}

func (r *RabbitMQ) Publish(message string) {

	_, err := r.channel.QueueDeclare(
		r.queueName,
		//是否持久化
		false,
		//是否为自动删除
		false,
		//是否具有排他性
		false,
		//是否阻塞
		false,
		//额外属性
		nil,
	)
	if err != nil {
		panic(err)
	}

	r.channel.Publish(
		r.exchange,
		r.queueName,
		false,
		false,
		amqp.Publishing{
			ContentType: "text/plain",
			Body:        []byte(message),
		})

}

func (r *RabbitMQ) Consumer() {

	_, err := r.channel.QueueDeclare(r.queueName, false, false, false, false, nil)

	if err != nil {
		panic(err)
	}

	//2、接收消息
	msgs, err := r.channel.Consume(
		r.queueName,
		//用来区分多个消费者
		"",
		//是否自动应答
		true,
		//是否具有排他性
		false,
		//如果设置为true，表示不能将同一个connection中发送的消息传递给这个connection中的消费者
		false,
		//消息队列是否阻塞
		false,
		nil,
	)
	if err != nil {
		panic(err)
	}

	forever := make(chan bool)

	go func() {
		for d := range msgs {
			log.Printf("Received a message : %s", d.Body)
		}
	}()

	log.Printf("[*] Waiting for messagees,To exit press CTRL+C")

	<-forever

}

运行

(1) cd consumer 进入消费者目录, 把消费者运行起来 go run consumer.go

(2) cd producer 进入生产者目录，让生产者制造消息 go run producer.go