aiopubsub 1.0.0

Simple pubsub pattern for asyncio applications.

Aiopubsub will use logwood if it is installed, otherwise it will default to the standard logging module.

Aiopubsub is only tested with Python 3.5. There are no plans to support older versions.

import asyncio
import aiopubsub
import logwood

async def main():
        logwood.basic_config()
        hub = aiopubsub.Hub()
        publisher = aiopubsub.Publisher(hub, prefix = aiopubsub.Key('a'))
        subscriber = aiopubsub.Subscriber(hub, 'subscriber_id')

        def print_message(key, message):
                print(key, message)

        sub_key = aiopubsub.Key('a', 'b', '*')
        subscriber.subscribe(sub_key)
        subscriber.add_listener(sub_key, print_message)

        pub_key = aiopubsub.Key('b', 'c')
        publisher.publish(pub_key, 'Hello subscriber')
        await asyncio.sleep(0.001) # Let the callback fire.
        # "('a', 'b', 'c') Hello subscriber" will be printed.

        key, message = await subscriber.consume()
        assert key == aiopubsub.Key('a', 'b', 'c')
        assert message == 'Hello subscriber'

        subscriber.remove_all_listeners()


asyncio.get_event_loop().run_until_complete(main())

subscriber.subscribe(subscription_key)
await subscriber.consume()

subscriber.add_listener(subscription_key, callback_on_message)