Low-level AMQP client for Python (fork of amqplib).
|build-status| |coverage| |license| |wheel| |pyversion| |pyimp|
:Version: 5.2.0 :Web: https://amqp.readthedocs.io/ :Download: https://pypi.org/project/amqp/ :Source: http://github.com/celery/py-amqp/ :Keywords: amqp, rabbitmq
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
_.
.. _amqplib: https://pypi.org/project/amqplib/ .. _Celery: http://celeryproject.org/ .. _kombu: https://kombu.readthedocs.io/ .. _librabbitmq: https://pypi.org/project/librabbitmq/
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).Connection.send_heartbeat
.Supports RabbitMQ extensions:
ChannelError
being raisedon_cancel
callback is passed to basic_consume
.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_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)
.AccessRefused
error
when connected to rabbitmq-server 3.2.0 or greater.Support for basic_return
Uses AMQP 0-9-1 instead of 0-8.
Channel.access_request
and ticket
arguments to methods
removed.arguments
argument to basic_consume
.internal
argument to exchange_declare
removed.auto_delete
argument to exchange_declare
deprecatedinsist
argument to Connection
removed.Channel.alerts
has been removed.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
Simple producer publishing messages to test
queue using default exchange:
.. code:: python
import amqp
with amqp.Connection('broker.example.com') as c:
ch = c.channel()
ch.basic_publish(amqp.Message('Hello World'), routing_key='test')
Producer publishing to test_exchange
exchange with publisher confirms enabled and using virtual_host test_vhost
:
.. code:: python
import amqp
with amqp.Connection(
'broker.example.com', exchange='test_exchange',
confirm_publish=True, virtual_host='test_vhost'
) as c:
ch = c.channel()
ch.basic_publish(amqp.Message('Hello World'), routing_key='test')
Consumer with acknowledgments enabled:
.. code:: python
import amqp
with amqp.Connection('broker.example.com') as c:
ch = c.channel()
def on_message(message):
print('Received message (delivery tag: {}): {}'.format(message.delivery_tag, message.body))
ch.basic_ack(message.delivery_tag)
ch.basic_consume(queue='test', callback=on_message)
while True:
c.drain_events()
Consumer with acknowledgments disabled:
.. code:: python
import amqp
with amqp.Connection('broker.example.com') as c:
ch = c.channel()
def on_message(message):
print('Received message (delivery tag: {}): {}'.format(message.delivery_tag, message.body))
ch.basic_consume(queue='test', callback=on_message, no_ack=True)
while True:
c.drain_events()
This library has experimental support of speedups. Speedups are implemented using Cython. To enable speedups, CELERY_ENABLE_SPEEDUPS
environment variable must be set during building/installation.
Currently speedups can be installed:
--no-binary
switch):.. code:: shell
CELERY_ENABLE_SPEEDUPS=true pip install --no-binary :all: amqp
.. code:: shell
CELERY_ENABLE_SPEEDUPS=true python setup.py install
Differences between AMQP 0.8 and 0.9.1
http://www.rabbitmq.com/amqp-0-8-to-0-9-1.html
AMQP 0.9.1 Quick Reference
http://www.rabbitmq.com/amqp-0-9-1-quickref.html
RabbitMQ Extensions
http://www.rabbitmq.com/extensions.html
For more information about AMQP, visit
http://www.amqp.org
For other Python client libraries see:
http://www.rabbitmq.com/devtools.html#python-dev
.. |build-status| image:: https://github.com/celery/py-amqp/actions/workflows/ci.yaml/badge.svg :alt: Build status :target: https://github.com/celery/py-amqp/actions/workflows/ci.yaml
.. |coverage| image:: https://codecov.io/github/celery/py-amqp/coverage.svg?branch=main :target: https://codecov.io/github/celery/py-amqp?branch=main
.. |license| image:: https://img.shields.io/pypi/l/amqp.svg :alt: BSD License :target: https://opensource.org/licenses/BSD-3-Clause
.. |wheel| image:: https://img.shields.io/pypi/wheel/amqp.svg :alt: Python AMQP can be installed via wheel :target: https://pypi.org/project/amqp/
.. |pyversion| image:: https://img.shields.io/pypi/pyversions/amqp.svg :alt: Supported Python versions. :target: https://pypi.org/project/amqp/
.. |pyimp| image:: https://img.shields.io/pypi/implementation/amqp.svg :alt: Support Python implementations. :target: https://pypi.org/project/amqp/
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