我使用pika twisted connection作为RabbitMQ消费者,下面是我的代码:
@defer.inlineCallbacks
def run(connection):
queue_name = 'aaa'
channel = yield connection.channel()
queue = yield channel.queue_declare(queue=queue_name, auto_delete=False, exclusive=False)
yield channel.queue_bind(exchange='amq.direct',queue=queue_name,routing_key=queue_name)
yield channel.basic_qos(prefetch_count=1)
queue_object, consumer_tag = yield channel.basic_consume(queue=queue_name,no_ack=False)
logger.info('[room server]start consume queue %s', queue_name)
l = task.LoopingCall(read, queue_object)
l.start(0.1)
@defer.inlineCallbacks
def read(queue_object):
ch,method,properties,body = yield queue_object.get()
try:
data = json.loads(body)
head_code = data['head_code']
openid = data['openid']
message_content = data['message_content']
conn_id = -1
try:
conn_id = data['conn_id']
except:
pass
message_dispatcher(head_code, openid, message_content, conn_id)
yield ch.basic_ack(delivery_tag=method.delivery_tag)
except ValueError as e:
logger.error('[error!]error body %s' % body)
yield ch.basic_ack(delivery_tag=method.delivery_tag)
credentials = pika.PlainCredentials(config.RABBITMQ_USERNAME, config.RABBITMQ_PASSWD)
parameters = pika.ConnectionParameters(credentials=credentials)
cc = protocol.ClientCreator(reactor, twisted_connection.TwistedProtocolConnection, parameters)
def got_error(failure, d):
logger.error(failure)
d = cc.connectTCP(config.RABBITMQ_HOST, config.RABBITMQ_PORT)
def start():
d = cc.connectTCP(config.RABBITMQ_HOST, config.RABBITMQ_PORT)
d.addCallback(lambda protocol: protocol.ready)
d.addCallback(run)
d.addErrback(got_error, d)
如何使重新连接工作?在
根据^{} docstring ,可以提供一个} and ^{} 必须是参数。因此,创建另一个on_close回调,在这里您可以处理连接终止及其发生的原因,然后执行必要的逻辑来连接到RabbitMQ:
on_close_callback
函数来处理连接终止。在此函数中,^{一旦完成了该代码,则
^{pr2}$ClientCreator
代码应遵循以下示例:不幸的是,我现在不能测试这个,但它应该可以工作。你已经有了大部分的逻辑,所以我把剩下的留给你做练习;)如果你有任何问题请评论,如果你有解决方案,请给其他人展示最终结果。在
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