This document describes the current stable version of py-amqp (5.0). For development docs, go here.

amqp - Python AMQP low-level client library

Version

5.0.6

Web

https://amqp.readthedocs.io/

Download

https://pypi.org/project/amqp/

Source

http://github.com/celery/py-amqp/

Keywords

amqp, rabbitmq

About

This is a fork of amqplib which was originally written by Barry Pederson. It is maintained by the Celery project, and used by kombu as a pure python alternative when librabbitmq is not available.

This library should be API compatible with librabbitmq.

Differences from amqplib

  • Supports draining events from multiple channels (Connection.drain_events)

  • Support for timeouts

  • Channels are restored after channel error, instead of having to close the connection.

  • Support for heartbeats

    • Connection.heartbeat_tick(rate=2) must called at regular intervals (half of the heartbeat value if rate is 2).

    • Or some other scheme by using Connection.send_heartbeat.

  • Supports RabbitMQ extensions:
    • Consumer Cancel Notifications
      • by default a cancel results in ChannelError being raised

      • but not if a on_cancel callback is passed to basic_consume.

    • Publisher confirms
      • Channel.confirm_select() enables publisher confirms.

      • Channel.events['basic_ack'].append(my_callback) adds a callback to be called when a message is confirmed. This callback is then called with the signature (delivery_tag, multiple).

    • Exchange-to-exchange bindings: exchange_bind / exchange_unbind.
      • Channel.confirm_select() enables publisher confirms.

      • Channel.events['basic_ack'].append(my_callback) adds a callback to be called when a message is confirmed. This callback is then called with the signature (delivery_tag, multiple).

  • Support for basic_return

  • Uses AMQP 0-9-1 instead of 0-8.
    • Channel.access_request and ticket arguments to methods removed.

    • Supports the arguments argument to basic_consume.

    • internal argument to exchange_declare removed.

    • auto_delete argument to exchange_declare deprecated

    • insist argument to Connection removed.

    • Channel.alerts has been removed.

    • Support for Channel.basic_recover_async.

    • Channel.basic_recover deprecated.

  • Exceptions renamed to have idiomatic names:
    • AMQPException -> AMQPError

    • AMQPConnectionException -> ConnectionError``

    • AMQPChannelException -> ChannelError``

    • Connection.known_hosts removed.

    • Connection no longer supports redirects.

    • exchange argument to queue_bind can now be empty to use the “default exchange”.

  • Adds Connection.is_alive that tries to detect whether the connection can still be used.

  • Adds Connection.connection_errors and .channel_errors, a list of recoverable errors.

  • Exposes the underlying socket as Connection.sock.

  • Adds Channel.no_ack_consumers to keep track of consumer tags that set the no_ack flag.

  • Slightly better at error recovery

Further

Contents

Indices and tables