.. _documentation: https://aio-pika.readthedocs.org/
.. _adopted official RabbitMQ tutorial: https://aio-pika.readthedocs.io/en/latest/rabbitmq-tutorial/1-introduction.html

aio-pika

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Wrapper for the aiormq_ for asyncio and humans.

.. note::
Since version 5.0.0 this library doesn't use pika as AMQP connector.
Versions below 5.0.0 contains or requires pika's source codes.

See examples and the tutorial in documentation_.

If you are newcomer in the RabbitMQ let's start the adopted official RabbitMQ tutorial_

.. _aiormq: http://github.com/mosquito/aiormq/

Features

• Completely asynchronous API.
• Object oriented API.
• Transparent auto-reconnects with complete state recovery with connect_robust
  (e.g. declared queues or exchanges, consuming state and bindings).
• Python 3.5+ compatible (include 3.7).
• For python 3.4 users available aio-pika<4
• Transparent publisher confirms_ support
• Transactions_ support

.. _Transactions: https://www.rabbitmq.com/semantics.html
.. _publisher confirms: https://www.rabbitmq.com/confirms.html

Installation

.. code-block:: shell

pip install aio-pika

Usage example

Simple consumer:

.. code-block:: python

import asyncio
import aio_pika


async def main(loop):
    connection = await aio_pika.connect_robust(
        "amqp://guest:guest@127.0.0.1/", loop=loop
    )

    async with connection:
        queue_name = "test_queue"

        # Creating channel
        channel = await connection.channel()    # type: aio_pika.Channel

        # Declaring queue
        queue = await channel.declare_queue(
            queue_name,
            auto_delete=True
        )   # type: aio_pika.Queue

        async with queue.iterator() as queue_iter:
            # Cancel consuming after __aexit__
            async for message in queue_iter:
                async with message.process():
                    print(message.body)

                    if queue.name in message.body.decode():
                        break


if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main(loop))
    loop.close()

Simple publisher:

.. code-block:: python

import asyncio
import aio_pika


async def main(loop):
    connection = await aio_pika.connect_robust(
        "amqp://guest:guest@127.0.0.1/", loop=loop
    )

    routing_key = "test_queue"

    channel = await connection.channel()    # type: aio_pika.Channel

    await channel.default_exchange.publish(
        aio_pika.Message(
            body='Hello {}'.format(routing_key).encode()
        ),
        routing_key=routing_key
    )

    await connection.close()


if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main(loop))
    loop.close()

Get single message example:

.. code-block:: python

import asyncio
from aio_pika import connect_robust, Message


async def main(loop):
    connection = await connect_robust(
        "amqp://guest:guest@127.0.0.1/",
        loop=loop
    )

    queue_name = "test_queue"
    routing_key = "test_queue"

    # Creating channel
    channel = await connection.channel()

    # Declaring exchange
    exchange = await channel.declare_exchange('direct', auto_delete=True)

    # Declaring queue
    queue = await channel.declare_queue(queue_name, auto_delete=True)

    # Binding queue
    await queue.bind(exchange, routing_key)

    await exchange.publish(
        Message(
            bytes('Hello', 'utf-8'),
            content_type='text/plain',
            headers={'foo': 'bar'}
        ),
        routing_key
    )

    # Receiving message
    incoming_message = await queue.get(timeout=5)

    # Confirm message
    await incoming_message.ack()

    await queue.unbind(exchange, routing_key)
    await queue.delete()
    await connection.close()


if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main(loop))

See another examples and the tutorial in documentation_.

Versioning

This software follows Semantic Versioning_

For contributors

Setting up development environment

---

Clone the project:

.. code-block:: shell

git clone https://github.com/mosquito/aio-pika.git
cd aio-pika

Create a new virtualenv for aio-pika_:

.. code-block:: shell

virtualenv -p python3.5 env

Install all requirements for aio-pika_:

.. code-block:: shell

env/bin/pip install -e '.[develop]'

Running Tests

---

NOTE: In order to run the tests locally you need to run a RabbitMQ instance with default user/password (guest/guest) and port (5672).

• ProTip: Use Docker for this:

.. code-block:: bash

docker run -d -p 5672:5672 -p 15672:15672 rabbitmq:3-management

To test just run:

.. code-block:: bash

make test

Creating Pull Requests

---

You feel free to create pull request, but you should describe your cases and add some examples.

The changes should follow simple rules:

• When your changes breaks public API you must increase the major version.
• When your changes is safe for public API (e.g. added an argument with default value)
• You have to add test cases (see tests/ folder)
• You must add docstrings
• You feel free to add yourself to "thank's to" section_

.. _"thank's to" section: https://github.com/mosquito/aio-pika/blob/master/docs/source/index.rst#thanks-for-contributing
.. _Semantic Versioning: http://semver.org/
.. _aio-pika: https://github.com/mosquito/aio-pika/