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Consumer/producer like library built over amqp (aioamqp)

Project description

info:Consumer/producer like library built over amqp (aioamqp)
https://img.shields.io/travis/aio-libs/aioamqp_consumer.svg https://img.shields.io/pypi/v/aioamqp_consumer.svg

Installation

pip install aioamqp_consumer

Usage

import asyncio
from functools import partial

from aioamqp_consumer import Consumer, Producer


async def task(payload, options, sleep=0, *, loop):
    await asyncio.sleep(sleep, loop=loop)
    print(payload)


async def main(*, loop):
    amqp_url = 'amqp://guest:guest@127.0.0.1:5672//'
    amqp_queue = 'your-queue-here'
    queue_kwargs = {
        'durable': True,
    }
    amqp_kwargs = {}  # https://aioamqp.readthedocs.io/en/latest/api.html#aioamqp.connect

    async with Producer(amqp_url, amqp_kwargs=amqp_kwargs, loop=loop) as producer:
        for _ in range(5):
            await producer.publish(
                b'hello',
                amqp_queue,
                queue_kwargs=queue_kwargs,
            )

    consumer = Consumer(
        amqp_url,
        partial(task, loop=loop, sleep=1),
        amqp_queue,
        queue_kwargs=queue_kwargs,
        amqp_kwargs=amqp_kwargs,
        loop=loop,
    )
    await consumer.scale(20)  # scale up to 20 background coroutines
    await consumer.scale(5)  # downscale to 5 background coroutines
    await consumer.join()  # wait for rabbitmq queue is empty and all local messages are processed
    consumer.close()
    await consumer.wait_closed()

loop = asyncio.get_event_loop()
loop.run_until_complete(main(loop=loop))
loop.close()

Project details


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