python第五十九天-----补上笔记

rabbitmq_server_topic topic模式

 1 #!/usr/bin/env python
 2 #{data} {time}
 3 #_*_coding:utf-8_*_
 4 
 5 import pika,sys,time
 6 connection = pika.BlockingConnection(pika.ConnectionParameters(
 7                'localhost'))
 8 channel = connection.channel()#管道
 9 
10 
11 
12 #severity = sys.argv[1] if len(sys.argv) > 1 else 'info'#启动参数 默认无参数为 info 级别
13 routing_key= sys.argv[1] if len(sys.argv) > 1 else 'anorrymous.info'#启动参数 默认无参数为 info 级别
14 msg=''.join(sys.argv[2:]) or  'info:消息默认发送………'#启动参数 为空，发默认消息
15 for i in range(10):
16     time.sleep(1)
17     channel.basic_publish(exchange='direct_logs',#绑定频道
18                           #routing_key=severity,#默认的消息队列级别
19                           routing_key=routing_key,#默认的消息队列级别
20                           body=msg+str(i),
21                           #properties=pika.BasicProperties(delivery_mode=2)#持久化 广播不能使用
22                            )
23     #print(msg,severity)
24     print(msg,routing_key)
25 connection.close()
26 #channel.close()

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topic_client: 可按级别来接收广播

 1 #!/usr/bin/env python
 2 #{data} {time}
 3 #_*_coding:utf-8_*_
 4 
 5 import pika,time,sys
 6 
 7 connection = pika.BlockingConnection(pika.ConnectionParameters(
 8                'localhost' ))
 9 channel = connection.channel()
10 
11 channel.exchange_declare(exchange='direct_logs',#定义一个接收的频道
12                          type='topic')
13 
14 reult=channel.queue_declare(exclusive=True)#随机生成唯一的队列名，会在消息接收后自动删除
15 queuename=reult.method.queue#队列名 自动生成
16 
17 
18 #severities = sys.argv[1:]
19 binding_key = sys.argv[1:]
20 #if not severities:
21 if not binding_key:
22     sys.stderr.write("Usage: %s [info] [warning] [error]
" % sys.argv[0])#启动接收的消息级别
23     sys.exit(1)
24 
25 #for severity in severities:#循环接收各级别的消息
26 for severity in binding_key:#循环接收各级别的消息
27     channel.queue_bind(exchange='direct_logs',
28                        queue=queuename,
29                        routing_key=severity)
30 
31 def callback(ch, method, properties, body):#回调函数
32     print('接收消息中…………')
33     #time.sleep(5)
34     print(" [x] Received %r" % body.decode())
35     ch.basic_ack(delivery_tag=method.delivery_tag)
36 
37 
38 channel.basic_qos(prefetch_count=1)#同时只处理一个消息
39 channel.basic_consume(callback,#接收到消息调用回调函数 callback
40                       queue=queuename,
41                       #no_ack=True
42                        )
43 
44 print(' [*] 接收消息中. To exit press CTRL+C')
45 
46 channel.start_consuming()#启动消息接收

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