rabbitmq - Rabbitmq Acking 在多个消费者中

Question

我有一个队列，多个消费者以循环方式工作。

Delivery_tag 用于在消费者完成处理后确认消息。但是多个消费者设置相同delivery_tag，尽管他们正在处理的消息不同。

结果，当 acking 完成时，我得到了precondition failed。

谁能建议我做错了什么？

这是消费者代码。我从这个链接得到它：

http://blogs.digitar.com/jjww/2009/01/rabbits-and-warrens/

from amqplib import client_0_8 as amqp

conn = amqp.Connection(host="localhost:5672", userid="guest", password="guest", virtual_host="/", insist=False)
chan = conn.channel()

chan.queue_declare(queue="po_box", durable=True, exclusive=False, auto_delete=False)
chan.exchange_declare(exchange="sorting_room", type="direct", durable=True, auto_delete=False,)

chan.queue_bind(queue="po_box", exchange="sorting_room", routing_key="jason")

def recv_callback(msg):
    print 'Received: ' + msg.body + ' from channel #' + str(msg.channel.channel_id)

chan.basic_consume(queue='po_box', no_ack=True, callback=recv_callback, consumer_tag="testtag")
while True:
    chan.wait()
chan.basic_cancel("testtag")


chan.close()
conn.close()

Answer 1

这是消费者代码。我从这个链接得到它。

http://blogs.digitar.com/jjww/2009/01/rabbits-and-warrens/

from amqplib import client_0_8 as amqp

conn = amqp.Connection(host="localhost:5672", userid="guest", password="guest", virtual_host="/", insist=False)
chan = conn.channel()

chan.queue_declare(queue="po_box", durable=True, exclusive=False, auto_delete=False)
chan.exchange_declare(exchange="sorting_room", type="direct", durable=True, auto_delete=False,)

chan.queue_bind(queue="po_box", exchange="sorting_room", routing_key="jason")

def recv_callback(msg):
    print 'Received: ' + msg.body + ' from channel #' + str(msg.channel.channel_id)

chan.basic_consume(queue='po_box', no_ack=True, callback=recv_callback, consumer_tag="testtag")
while True:
    chan.wait()
chan.basic_cancel("testtag")


chan.close()
conn.close()