zoukankan      html  css  js  c++  java
  • python rabbitMQ有选择的接收消息(exchange type=direct)或者(exchange_type=topic) 

    RabbitMQ还支持根据关键字发送,即:队列绑定关键字,发送者将数据根据关键字发送到消息exchange,exchange根据 关键字 判定应该将数据发送至指定队列。

    import pika
    import sys
    
    connection = pika.BlockingConnection(pika.ConnectionParameters(
        host='localhost'))
    channel = connection.channel()
    
    channel.exchange_declare(exchange='direct_logs',
                             exchange_type='direct')
    
    severity = sys.argv[1] if len(sys.argv) > 1 else 'info'#发到那个queue
    print(severity)
    message = ' '.join(sys.argv[2:]) or 'Hello World! TEST'
    channel.basic_publish(exchange='direct_logs',
                          routing_key=severity,
                          body=message)
    print(" [x] Sent %r:%r" % (severity, message))
    connection.close()
    direct_product
    import pika
    import sys
    
    connection = pika.BlockingConnection(pika.ConnectionParameters(
        host='localhost'))
    channel = connection.channel()
    
    channel.exchange_declare(exchange='direct_logs',
                             exchange_type='direct')
    
    result = channel.queue_declare('',exclusive=True)
    queue_name = result.method.queue
    
    severities = sys.argv[1:]
    if not severities:
        sys.stderr.write("Usage: %s [info] [warning] [error]
    " % sys.argv[0])
        sys.exit(1)
    
    print(severities)
    
    for severity in severities:
        channel.queue_bind(exchange='direct_logs',
                           queue=queue_name,
                           routing_key=severity)
    
    print(' [*] Waiting for logs. To exit press CTRL+C')
    
    
    def callback(ch, method, properties, body):
        print(" [x] %r:%r" % (method.routing_key, body))
    
    
    channel.basic_consume(on_message_callback=callback,
                          queue=queue_name,
                          auto_ack=True)
    
    channel.start_consuming()
    direct_consumer

    更细致的过滤

    把上面代码exchange_type改成topic。#创建和消费都要改

    要接收运行的所有日志(To receive all the logs run:):
    python direct_consumer.py "#"
    要从设备“kern”接收所有日志(To receive all logs from the facility "kern":):
    python direct_consumer.py "kern.*"
    或者,如果您只想了解“关键”日志:(Or if you want to hear only about "critical" logs:)
    python direct_consumer.py "*.critical"
    您可以创建多个绑定:(You can create multiple bindings:)
    python direct_consumer.py "kern.*" "*.critical"
    并发出带有路由密钥的日志“内核临界“”类型(And to emit a log with a routing key "kern.critical" type:)
    python direct_consumer.py "kern.critical" "A critical kernel error"

















  • 相关阅读:
    vim的强大,vim设置和插件的使用,脱离windows才是王道
    [VS2013]如何闪开安装VS2013必须要有安装IE10的限制
    常用客户端实现逻辑
    开源控件ViewPagerIndicator学习
    常用设计模式
    主题演讲:未来新趋势电动车
    你最美好的年华
    一度总结
    android线程池ThreadPoolExecutor的理解
    Touch事件or手机卫士面试题整理回答(二)
  • 原文地址:https://www.cnblogs.com/anhao-world/p/13883419.html
Copyright © 2011-2022 走看看