Rabbitmq的一些场景构建

最新推荐文章于 2024-09-08 07:00:00 发布

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本文介绍RabbitMQ消息队列服务异常处理方法，包括节点消息队列服务异常的解决步骤，以及如何构建高负载和未应答过多的消息队列场景。通过shell脚本和Python代码演示了如何删除交换机、定义队列、绑定交换机以及发送大量消息，同时提供了一个Python示例展示如何消费消息并故意造成未应答过多的情况。

１．节点消息队列服务发生异常

rabbitmqadmin -u rabbitmq -p 77jJ4gwo -H rabbitmq list exchanges| grep reply| awk '{print $2}'| while read line ; do rabbitmqadmin -u rabbitmq -p 77jJ4gwo -H rabbitmq delete exchange name=${line}; done

注：恢复的话，需要重启rabbitmq服务，若是微服务，delete rabbitmq pod

２．消息队列负载高场景构建

(1) 定义queue
rabbitmqadmin -u rabbitmq -p 77jJ4gwo -H rabbitmq declare queue name="test"
(2) 定义exchange
rabbitmqadmin -u rabbitmq -p 77jJ4gwo -H rabbitmq declare exchange name="test-exchange" type="direct"
(3) 绑定exchange
rabbitmqadmin -u rabbitmq -p 77jJ4gwo -H rabbitmq declare binding source=test-exchange destination=test routing_key=test
(4) 发送message
for i in $(seq 1 20000); do rabbitmqadmin -u rabbitmq -p 77jJ4gwo -H rabbitmq publish routing_key=test exchange=test-exchange payload='this is testingXXXXXXX'; done

３．消息队列未应答过多，场景构建

import pika
import logging
import time, datetime
COUNT=1

def callback(ch, method, properties, body):
    print method.routing_key
    global COUNT
    print COUNT
    COUNT=COUNT+1
    if COUNT > 1000:
        print COUNT
        time.sleep(1000000)
    # ch.basic_ack()


if __name__ == "__main__":

    credentials = pika.PlainCredentials(username='rabbitmq', password='77jJ4gwo')
    connection = pika.BlockingConnection(
        pika.ConnectionParameters(
            host='127.0.0.1', port=5672, virtual_host='/',
            credentials=credentials
        )
    )
    channel = connection.channel()
    # channel.exchange_declare(exchange='amq.rabbitmq.event',type='topic')

    #channel.queue_declare(queue='test', durable=False)  

    channel.queue_bind(exchange='amq.rabbitmq.event',queue='test',routing_key='#')
 
 
    channel.basic_consume(callback,
                      queue='test',
                      )
 
    channel.start_consuming()