#!/usr/bin/env python3
import pika
import time

connection = pika.BlockingConnection(pika.ConnectionParameters("localhost"))
channel = connection.channel()

channel.queue_declare(queue="task_queue", durable=True)
print(" [*] Waiting for messages. To exit press CTRL+C")


def callback(ch, method, properties, body):
    # instead of b'Hello World!'
    text = body.decode("utf-8")
    print(" [x] Received", text)
    time.sleep(text.count("."))
    print(" [x] Done")
    ch.basic_ack(delivery_tag=method.delivery_tag)


channel.basic_qos(prefetch_count=1)
channel.basic_consume(queue="task_queue", on_message_callback=callback)

channel.start_consuming()

connection.close()