distributed-computing/tasks/yudenicheva-ds/lab_4/README.md

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# Отчет по лабораторной работе №4
Выполнил студентка гр. ИСЭбд-41 Юденичева Дарья
## Tutorial
Установила rabbitMQ server, erlang и зашла в брокер под гостем по http://localhost:15672/#/
![](scrin/111.png)
Туториал-1:
![](scrin/222.png)
![](scrin/333.png)
Туториал 2:
![](scrin/444.png)
![](scrin/555.png)
Туториал 3:
![](scrin/666.png)
## Разработка демонстрационных приложений
Предметная область: Расходные договора и договора на платное обучение.
Разработа три приложения согласно предметной области.
1. Publisher
```py
import pika
import time
import random
collection = ["Application for general business expenses", "The contract is completed", "Enrollment order completed", "Student enrolled"]
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()
channel.exchange_declare(exchange='Agreements', exchange_type='fanout')
while True:
message = f"Message: {random.choice(collection)}"
channel.basic_publish(exchange='Agreements', routing_key='', body=message)
time.sleep(1)
connection.close()
```
2. Consumer 1.
```py
import pika
import time
def process_message(ch, method, properties, body):
print(f"Получено сообщение: {body}")
time.sleep(3)
print("Сообщение успешно обработано")
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()
result = channel.queue_declare(queue='', exclusive=True)
queue_name = result.method.queue
channel.queue_bind(exchange='Agreements', queue=queue_name)
channel.basic_consume(queue=queue_name, on_message_callback=process_message, auto_ack=True)
print('Ожидание сообщений...')
channel.start_consuming()
```
3. Consumer 2.
```py
import pika
def process_message(ch, method, properties, body):
print(f"Получено сообщение: {body}")
print("Сообщение успешно обработано")
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()
result = channel.queue_declare(queue='', exclusive=True)
queue_name = result.method.queue
channel.queue_bind(exchange='Agreements', queue=queue_name)
channel.basic_consume(queue=queue_name, on_message_callback=process_message, auto_ack=True)
print('Ожидание сообщений...')
channel.start_consuming()
```
## Результаты выполнения лабораторной работы
Результат отработки Consumer_1:
![](scrin/777.png)
![](scrin/888.png)
Результат отработки Consumer_2:
![](scrin/999.png)
![](scrin/1000.png)
![](scrin/11.png)