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

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

import asyncio
import aioamqp

import sys


async def exchange_routing_topic():
    try:
        transport, protocol = await aioamqp.connect('localhost', 5672)
    except aioamqp.AmqpClosedConnection:
        print("closed connections")
        return

    channel = await protocol.channel()
    exchange_name = 'topic_logs'
    message = ' '.join(sys.argv[2:]) or 'Hello World!'
    routing_key = sys.argv[1] if len(sys.argv) > 1 else 'anonymous.info'

    await channel.exchange(exchange_name, 'topic')

    await channel.publish(message, exchange_name=exchange_name, routing_key=routing_key)
    print(" [x] Sent %r" % message)

    await protocol.close()
    transport.close()


asyncio.get_event_loop().run_until_complete(exchange_routing_topic())