mirror of https://github.com/celery/kombu.git
43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
"""
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Example of simple consumer that waits for a single message, acknowledges it
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and exits.
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"""
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from __future__ import with_statement
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from kombu import Connection, Exchange, Queue, Consumer, eventloop
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from pprint import pformat
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#: By default messages sent to exchanges are persistent (delivery_mode=2),
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#: and queues and exchanges are durable.
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exchange = Exchange('kombu_demo', type='direct')
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queue = Queue('kombu_demo', exchange, routing_key='kombu_demo')
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def pretty(obj):
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return pformat(obj, indent=4)
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#: This is the callback applied when a message is received.
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def handle_message(body, message):
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print('Received message: %r' % (body, ))
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print(' properties:\n%s' % (pretty(message.properties), ))
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print(' delivery_info:\n%s' % (pretty(message.delivery_info), ))
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message.ack()
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#: Create a connection and a channel.
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#: If hostname, userid, password and virtual_host is not specified
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#: the values below are the default, but listed here so it can
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#: be easily changed.
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with Connection('amqp://guest:guest@localhost:5672//') as connection:
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#: Create consumer using our callback and queue.
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#: Second argument can also be a list to consume from
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#: any number of queues.
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with Consumer(connection, queue, callbacks=[handle_message]):
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#: This waits for a single event. Note that this event may not
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#: be a message, or a message that is to be delivered to the consumers
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#: channel, but any event received on the connection.
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eventloop(connection, limit=1, timeout=10.0)
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