# connect to rabbitmq using input username and password 
credentials = pika.PlainCredentials(sys.argv[1], sys.argv[2])
parameters = pika.ConnectionParameters(credentials=credentials)
connection = pika.BlockingConnection(parameters)
 
 # connect to channel
channel = connection.channel()

 # declare the exchange
channel.exchange_declare(exchange='medici', exchange_type='topic', durable=True)

 # declare the queue
channel.queue_declare(queue=receiver, durable=True)

 # connect queue and exchange
channel.queue_bind(queue=receiver, exchange='medici', routing_key='*.file.text.plain')

 # create listener
channel.basic_consume(on_message, queue=receiver, no_ack=False)

 # start listening
logger.info("Waiting for messages. To exit press CTRL+C")
 try:
channel.start_consuming()
 except KeyboardInterrupt:
channel.stop_consuming()

 
# close connection
connection.close()