#!/usr/bin/env python
import pika, sys, os, json


def main():
    connection = pika.BlockingConnection(pika.ConnectionParameters(host="localhost"))
    channel = connection.channel()

    queue_name = sys.argv[1]

    channel.queue_declare(queue=queue_name, durable=True)

    def callback(ch, method, properties, body):
        message = json.loads(body.decode())
        print(" [x] Received %r" % message)

    channel.basic_consume(queue=queue_name, on_message_callback=callback, auto_ack=True)

    print(" [*] Waiting for messages. To exit press CTRL+C")
    channel.start_consuming()


if __name__ == "__main__":
    try:
        main()
    except KeyboardInterrupt:
        print("Interrupted")
        try:
            sys.exit(0)
        except SystemExit:
            os._exit(0)