Python操作Rabbit MQ的5种模式

python版本:   2.7.14

一 消息生产者代码:

 # -*- coding: utf-8 -*-

 import json
 import pika
 import urllib
 import urllib2
 import chardet
 import sys
 import json
 from common import CommonMethod
 import pika
 import time

 HOST_NAME = "172.21.204.14"
 USER_NAME = "xxx"
 PASSWORD = "xxx"

 # 1."Hello World!"
 def hello_world():
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.queue_declare(queue='hello')
     channel.basic_publish(exchange='',
                             routing_key='hello',      # specify queue  name
                             body='Hello World!')
     print(" [x] Sent 'Hello World!'")
     connection.close()

 # 2."Work queues"
 def new_task():
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.queue_declare(queue='task_queue', durable=True)   # 设置队列持久化
     message = ' '.join(sys.argv[1:]) or "Hello World!"
     channel.basic_publish(exchange='',
                         routing_key='task_queue',
                         body=message,
                         properties=pika.BasicProperties(
                             delivery_mode = 2,                # 设置消息持久化
                         ))
     print(" [x] Sent %r" % message)
     connection.close()

 # 3."Publish/Subscribe"
 def emit_log(message):
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.exchange_declare(exchange='logs',        # 申明logs交换机
                          exchange_type='fanout')     # 交换机类型: 发布/订阅

     channel.basic_publish(exchange='logs',
                         routing_key='',
                         body=message)
     print(" [x] Sent %r" % message)
     connection.close()

 # 4."Routing"
 def emit_log_direct(log_level,message):
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.exchange_declare(exchange='direct_logs', # 申明logs交换机
                          exchange_type='direct')     # 交换机类型: 路由(Routing)

     channel.basic_publish(exchange='direct_logs',
                         routing_key=log_level,
                         body=message)
     print(" [x] Sent %r:%r" % (log_level, message))
     connection.close()

 emit_log_direct("info", "info log message:...")
 emit_log_direct("error", "error log message:...")

 # 5."Topic"
 # 与Routing模式类似,比Routing模式多了routing_key可以使用通配符"*","#"等,使用更加灵活

二 消息消费者代码:

 # -*- coding: utf-8 -*-

 import json
 import pika
 import urllib
 import urllib2
 import chardet
 import sys
 import json
 from common import CommonMethod
 import pika
 import time

 HOST_NAME = "172.21.204.14"
 USER_NAME = "xxx"
 PASSWORD = "xxx"

 # 1."Hello World!"
 def hello_world():
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.queue_declare(queue='hello')
     channel.basic_publish(exchange='',
                             routing_key='hello',      # specify queue  name
                             body='Hello World!')
     print(" [x] Sent 'Hello World!'")
     connection.close()

 # 2."Work queues"
 def new_task():
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.queue_declare(queue='task_queue', durable=True)   # 设置队列持久化
     message = ' '.join(sys.argv[1:]) or "Hello World!"
     channel.basic_publish(exchange='',
                         routing_key='task_queue',
                         body=message,
                         properties=pika.BasicProperties(
                             delivery_mode = 2,                # 设置消息持久化
                         ))
     print(" [x] Sent %r" % message)
     connection.close()

 # 3."Publish/Subscribe"
 def emit_log(message):
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.exchange_declare(exchange='logs',        # 申明logs交换机
                          exchange_type='fanout')     # 交换机类型: 发布/订阅

     channel.basic_publish(exchange='logs',
                         routing_key='',
                         body=message)
     print(" [x] Sent %r" % message)
     connection.close()

 # 4."Routing"
 def emit_log_direct(log_level,message):
     credentials = pika.PlainCredentials(USER_NAME, PASSWORD)
     connection = pika.BlockingConnection(pika.ConnectionParameters(HOST_NAME, 5672,'/', credentials))
     channel = connection.channel()

     channel.exchange_declare(exchange='direct_logs', # 申明logs交换机
                          exchange_type='direct')     # 交换机类型: 路由(Routing)

     channel.basic_publish(exchange='direct_logs',
                         routing_key=log_level,
                         body=message)
     print(" [x] Sent %r:%r" % (log_level, message))
     connection.close()

 emit_log_direct("info", "info log message:...")
 emit_log_direct("error", "error log message:...")

 # 5."Topic"
 # 与Routing模式类似,比Routing模式多了routing_key可以使用通配符"*","#"等,使用更加灵活

三 图片

官网参考文档: http://www.rabbitmq.com/getstarted.html