import random
import time
import pika

queue_name = 'queue_1'
exchange = 'logs'


def callback(ch, method, properties, body):
    print(f" [Consumer_1] - получено сообщение - {body.decode()}")
    time.sleep(random.choice([2, 3]))
    print(f" [Consumer_1] - сообщение обработано")
    print()
    ch.basic_ack(delivery_tag=method.delivery_tag)


if __name__ == '__main__':
    connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
    channel = connection.channel()
    try:
        # своя не анонимная очередь
        channel.queue_declare(queue=queue_name)
        # binding на exchange
        channel.queue_bind(exchange=exchange, queue=queue_name)
        channel.basic_consume(queue=queue_name, on_message_callback=callback)
        channel.start_consuming()
    except KeyboardInterrupt:
        connection.close()