介紹

rabbitmq預設有7個交換機，其中amq.rabbitmq.log為系統日誌的交換機，這個日誌為topic型別，會有三個等級的（routing_key）的日誌傳送到這個交換機上。

#!/usr/bin/env python
# -*- coding: utf-8 -*-


import pika
# ########################### 訂閱者 ###########################
credentials = pika.PlainCredentials("使用者名稱","密碼")
connection = pika.BlockingConnection(pika.ConnectionParameters(
    
 
'ip',
    5672,
    '/',
    credentials=credentials))

channel = connection.channel()


# 宣告佇列
channel.queue_declare(queue='info_queue',durable=True)
channel.queue_declare(queue='error_queue',durable=True)
channel.queue_declare(queue='warning_queue',durable=True)

# 繫結
channel.queue_bind(exchange='amq.rabbitmq.log
 
',queue="info_queue",routing_key="info")
channel.queue_bind(exchange='amq.rabbitmq.log',queue="error_queue",routing_key="error")
channel.queue_bind(exchange='amq.rabbitmq.log',queue="warning_queue",routing_key="warning")

print(' [*] Waiting for logs. To exit press CTRL+C')

def callback(ch, method, properties, body):
    
 
print(" [x] %r" % body)
    print(" [x] Done")
    ch.basic_ack(delivery_tag=method.delivery_tag)

channel.basic_consume("info_queue",callback,auto_ack=False)
channel.basic_consume("error_queue",callback,auto_ack=False)
channel.basic_consume("warning_queue",callback,auto_ack=False)

channel.start_consuming()


'''
然後釋出者只需要給exchange傳送訊息，然後exchange繫結的多個佇列都有這個訊息了。訂閱者就收到這個訊息了。
'''