diff --git a/tasks/ostrovskaya-sf/lab_4/README.md b/tasks/ostrovskaya-sf/lab_4/README.md
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+# Отчет по лабораторной работе №4
+
+Выполнила студентка гр. ИСЭбд-41 Островская С. Ф.
+
+## Прохождение tutorial
+
+Установила rabbitMQ server, erlang и зашла в брокер под гостем по http://localhost:15672/#/
+
+
+Туториал 1:
+
+
+
+
+Туториал 2:
+
+
+
+
+Туториал 3:
+
+
+
+
+## Разработка демонстрационных приложений
+
+Предметная область: Дополнительный соглашения и договоры на проживание.
+Разработаны три приложения, согласно предметной области.
+
+1. Publisher
+
+```py
+import pika
+import time
+import random
+
+collection = ["Application for accommodation in a dormitory", "Rector's order", "Conclusion of an agreement", "Check-into a dormitory"]
+
+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:
+
+
+
+
+Результат отработки Consumer_2:
+
+
+
+
+Вывод: Consumer_2 нагружает меньше памяти, чем Consumer_1 и принимает сообщения гораздо быстрее, тем самым не позволяя очереди накапливать огромное количество сообщений.
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/.gitignore b/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/.gitignore
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+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/inspectionProfiles/profiles_settings.xml b/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/inspectionProfiles/profiles_settings.xml
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/lab_4_py.iml b/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/lab_4_py.iml
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/misc.xml b/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/misc.xml
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+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/misc.xml
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/modules.xml b/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/modules.xml
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+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/.idea/modules.xml
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/consumer_1.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/consumer_1.py
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+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/consumer_1.py
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+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()
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/consumer_2.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/consumer_2.py
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--- /dev/null
+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/consumer_2.py
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+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()
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/publisher.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/publisher.py
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--- /dev/null
+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/main_task/publisher.py
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+import pika
+import time
+import random
+
+collection = ["Application for accommodation in a dormitory", "Rector's order", "Conclusion of an agreement", "Check-into a dormitory"]
+
+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()
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_1/receive.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_1/receive.py
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--- /dev/null
+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_1/receive.py
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+import pika, sys, os
+
+def main():
+ connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+ channel = connection.channel()
+
+ channel.queue_declare(queue='OstrovsofaLogs')
+
+ def callback(ch, method, properties, body):
+ print(f" [x] Получено сообщение: {body}")
+
+ channel.basic_consume(queue='OstrovsofaLogs', on_message_callback=callback, auto_ack=True)
+
+ print(' [*] Ожидание сообщений. Для завершения CTRL+C')
+ channel.start_consuming()
+
+if __name__ == '__main__':
+ try:
+ main()
+ except KeyboardInterrupt:
+ print('Произошла ошибка')
+ try:
+ sys.exit(0)
+ except SystemExit:
+ os._exit(0)
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_1/send.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_1/send.py
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+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_1/send.py
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+import pika
+
+connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='ostrovsofa')
+
+channel.basic_publish(exchange='',routing_key='ostrovsofa',body='My cat"s name is Montik!')
+print(" [x] Отправлено сообщение")
+
+connection.close()
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_2/new_task.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_2/new_task.py
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--- /dev/null
+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_2/new_task.py
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+import pika
+import sys
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='ostrovsofa2', durable=True)
+
+message = ' '.join(sys.argv[1:]) or "My cat's name is Montik!"
+channel.basic_publish(exchange='', routing_key='ostrovsofa2', body=message, properties=pika.BasicProperties(
+ delivery_mode=pika.spec.PERSISTENT_DELIVERY_MODE))
+print(f" [x] Отправлено {message}")
+connection.close()
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_2/worker.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_2/worker.py
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--- /dev/null
+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_2/worker.py
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+import pika
+import time
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='ostrovsofa2', durable=True)
+print(' [*] Ожидание сообщений. Для завершения CTRL+C')
+
+def callback(ch, method, properties, body):
+ print(f" [x] Получено сообщение: {body.decode()}")
+ time.sleep(body.count(b'.'))
+ print(" [x] Выполнено")
+ ch.basic_ack(delivery_tag=method.delivery_tag)
+
+channel.basic_qos(prefetch_count=1)
+channel.basic_consume(queue='ostrovsofa2', on_message_callback=callback)
+
+channel.start_consuming()
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_3/emit_log.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_3/emit_log.py
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--- /dev/null
+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_3/emit_log.py
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+import pika
+import sys
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='OstrovsofaLogs', exchange_type='fanout')
+
+message = ' '.join(sys.argv[1:]) or "Info: My cat's name is Montik!"
+channel.basic_publish(exchange='OstrovsofaLogs', routing_key='', body=message)
+print(f" [x] Отправлено сообщение: {message}")
+connection.close()
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diff --git a/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_3/receive_logs.py b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_3/receive_logs.py
new file mode 100644
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--- /dev/null
+++ b/tasks/ostrovskaya-sf/lab_4/lab_4_py/tutorial_3/receive_logs.py
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+import pika
+
+connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='OstrovsofaLogs', exchange_type='fanout')
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='OstrovsofaLogs', queue=queue_name)
+
+print(' [*] Ожидание сообщений. Для завершения CTRL+C')
+
+def callback(ch, method, properties, body):
+ print(f" [x] {body}")
+
+channel.basic_consume(
+ queue=queue_name, on_message_callback=callback, auto_ack=True)
+
+channel.start_consuming()
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