#!/usr/bin/env python
"""
    Rabbitmq.com pub/sub example

    https://www.rabbitmq.com/tutorials/tutorial-three-python.html

"""

import asyncio
import aioamqp
import random



@asyncio.coroutine
def callback(body, envelope, properties):
    print(body)


@asyncio.coroutine
def receive_log():
    try:
        transport, protocol = yield from aioamqp.connect('localhost', 5672)
    except aioamqp.AmqpClosedConnection:
        print("closed connections")
        return


    channel = yield from protocol.channel()
    exchange_name = 'logs'
    # TODO let rabbitmq choose the queue name
    queue_name = 'queue-%s' % random.randint(0, 10000)

    yield from channel.exchange(exchange_name, 'fanout')

    yield from asyncio.wait_for(channel.queue(queue_name, durable=False, auto_delete=True), timeout=10)

    yield from asyncio.wait_for(channel.queue_bind(exchange_name=exchange_name, queue_name=queue_name, routing_key=''), timeout=10)

    print(' [*] Waiting for logs. To exit press CTRL+C')

    yield from asyncio.wait_for(channel.basic_consume(queue_name, callback=callback), timeout=10)


asyncio.get_event_loop().run_until_complete(receive_log())