[英]How to delete or postpone a message in the AMQP queue
我正在使用txamqp python库连接到AMQP代理(RabbitMQ),我有一个使用以下回调的消费者:
@defer.inlineCallbacks
def message_callback(self, message, queue, chan):
"""This callback is a queue listener
it is called whenever a message was consumed from queue
c.f. test_amqp.ConsumeTestCase for use cases
"""
# The callback should be redefined here to keep getting further messages from queue
queue.get().addCallback(self.message_callback, queue, chan).addErrback(self.message_errback)
print " [x] Received a valid message: [%r]" % (message.content.body,)
yield self.smpp.sendDataRequest(SubmitSmPDU)
# ACK the message in queue, this will remove it from the queue
chan.basic_ack(message.delivery_tag)
当“确认”消息时,它将从队列中删除(以确认?),但是当消息不是“ack”时会发生什么? 我需要获得一个“重试”机制,我可以推迟稍后再次回调的消息,并跟踪它需要多少次重试。
我如何列出/删除队列中的消息?
它已经解决,为了从队列中重试消息,有必要拒绝带有'retry'标志的消息,它将被排队回队列。
如果我用计时器拒绝它(callLater in twisted),消息排队将被推迟到我想要的任何时间。
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