diff --git a/presnyakova_victoria_lab_4/lessons/lesson_1/img.png b/presnyakova_victoria_lab_4/lessons/lesson_1/img.png
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diff --git a/presnyakova_victoria_lab_4/lessons/lesson_1/img_1.png b/presnyakova_victoria_lab_4/lessons/lesson_1/img_1.png
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diff --git a/presnyakova_victoria_lab_4/lessons/lesson_1/receive.py b/presnyakova_victoria_lab_4/lessons/lesson_1/receive.py
new file mode 100644
index 0000000..f118e0a
--- /dev/null
+++ b/presnyakova_victoria_lab_4/lessons/lesson_1/receive.py
@@ -0,0 +1,25 @@
+import pika, sys, os
+
+def main():
+    connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
+    channel = connection.channel()
+
+    channel.queue_declare(queue='hello')
+
+    def callback(ch, method, properties, body):
+        print(f" [x] Received {body}")
+
+    channel.basic_consume(queue='hello', on_message_callback=callback, auto_ack=True)
+
+    print(' [*] Waiting for messages. To exit press CTRL+C')
+    channel.start_consuming()
+
+if __name__ == '__main__':
+    try:
+        main()
+    except KeyboardInterrupt:
+        print('Interrupted')
+        try:
+            sys.exit(0)
+        except SystemExit:
+            os._exit(0)
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/lessons/lesson_1/send.py b/presnyakova_victoria_lab_4/lessons/lesson_1/send.py
new file mode 100644
index 0000000..41cfff2
--- /dev/null
+++ b/presnyakova_victoria_lab_4/lessons/lesson_1/send.py
@@ -0,0 +1,11 @@
+import pika
+
+connection = pika.BlockingConnection(
+    pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='hello')
+
+channel.basic_publish(exchange='', routing_key='hello', body='Hello World!')
+print(" [x] Sent 'Hello World!'")
+connection.close()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/lessons/lesson_2/img.png b/presnyakova_victoria_lab_4/lessons/lesson_2/img.png
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diff --git a/presnyakova_victoria_lab_4/lessons/lesson_2/img_1.png b/presnyakova_victoria_lab_4/lessons/lesson_2/img_1.png
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diff --git a/presnyakova_victoria_lab_4/lessons/lesson_2/new_task.py b/presnyakova_victoria_lab_4/lessons/lesson_2/new_task.py
new file mode 100644
index 0000000..a2444e0
--- /dev/null
+++ b/presnyakova_victoria_lab_4/lessons/lesson_2/new_task.py
@@ -0,0 +1,19 @@
+import pika
+import sys
+
+connection = pika.BlockingConnection(
+    pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.queue_declare(queue='task_queue', durable=True)
+
+message = ' '.join(sys.argv[1:]) or "Hello World!"
+channel.basic_publish(
+    exchange='',
+    routing_key='task_queue',
+    body=message,
+    properties=pika.BasicProperties(
+        delivery_mode=pika.DeliveryMode.Persistent
+    ))
+print(f" [x] Sent {message}")
+connection.close()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/lessons/lesson_2/worker.py b/presnyakova_victoria_lab_4/lessons/lesson_2/worker.py
new file mode 100644
index 0000000..8f8ab64
--- /dev/null
+++ b/presnyakova_victoria_lab_4/lessons/lesson_2/worker.py
@@ -0,0 +1,22 @@
+import pika
+import time
+
+connection = pika.BlockingConnection(
+    pika.ConnectionParameters(host='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):
+    print(f" [x] Received {body.decode()}")
+    time.sleep(body.count(b'.'))
+    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()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/lessons/lesson_3/emit_log.py b/presnyakova_victoria_lab_4/lessons/lesson_3/emit_log.py
new file mode 100644
index 0000000..45b6989
--- /dev/null
+++ b/presnyakova_victoria_lab_4/lessons/lesson_3/emit_log.py
@@ -0,0 +1,13 @@
+import pika
+import sys
+
+connection = pika.BlockingConnection(
+    pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='logs', exchange_type='fanout')
+
+message = ' '.join(sys.argv[1:]) or "info: Hello World!"
+channel.basic_publish(exchange='logs', routing_key='', body=message)
+print(f" [x] Sent {message}")
+connection.close()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/lessons/lesson_3/img.png b/presnyakova_victoria_lab_4/lessons/lesson_3/img.png
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diff --git a/presnyakova_victoria_lab_4/lessons/lesson_3/img_1.png b/presnyakova_victoria_lab_4/lessons/lesson_3/img_1.png
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diff --git a/presnyakova_victoria_lab_4/lessons/lesson_3/receive_logs.py b/presnyakova_victoria_lab_4/lessons/lesson_3/receive_logs.py
new file mode 100644
index 0000000..60d881d
--- /dev/null
+++ b/presnyakova_victoria_lab_4/lessons/lesson_3/receive_logs.py
@@ -0,0 +1,22 @@
+import pika
+
+connection = pika.BlockingConnection(
+    pika.ConnectionParameters(host='localhost'))
+channel = connection.channel()
+
+channel.exchange_declare(exchange='logs', exchange_type='fanout')
+
+result = channel.queue_declare(queue='', exclusive=True)
+queue_name = result.method.queue
+
+channel.queue_bind(exchange='logs', queue=queue_name)
+
+print(' [*] Waiting for logs. To exit press 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()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/publisher_app/app.py b/presnyakova_victoria_lab_4/publisher_app/app.py
new file mode 100644
index 0000000..0ce1e1e
--- /dev/null
+++ b/presnyakova_victoria_lab_4/publisher_app/app.py
@@ -0,0 +1,19 @@
+from flask import Flask, render_template, request
+from publisher import publish_messages
+
+app = Flask(__name__)
+
+
+@app.route('/')
+def index():
+    return "это publisher"
+
+
+@app.route('/publish', methods=['GET'])
+def publish():
+    publish_messages()
+    return 'Начало детекции дефектов'
+
+
+if __name__ == '__main__':
+    app.run(debug=True)
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/publisher_app/consumer_1.py b/presnyakova_victoria_lab_4/publisher_app/consumer_1.py
new file mode 100644
index 0000000..c1aca97
--- /dev/null
+++ b/presnyakova_victoria_lab_4/publisher_app/consumer_1.py
@@ -0,0 +1,27 @@
+import pika
+
+
+def callback(ch, method, properties, body):
+    print("Скрипт 1 обрабатывает дефект '{}'".format(body.decode()))
+
+
+def consume_messages():
+    connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+    channel = connection.channel()
+
+    exchange_name = 'logs'
+    channel.exchange_declare(exchange=exchange_name, exchange_type='fanout')
+    channel.queue_declare(queue='example_queue')
+    channel.queue_bind(exchange=exchange_name, queue='example_queue')
+    channel.basic_consume(queue='example_queue', on_message_callback=callback, auto_ack=True)
+    print('Скрипт 1 ожидает дефектов')
+    try:
+        channel.start_consuming()
+    except KeyboardInterrupt:
+        print('Прервано. Останавливаем...')
+        channel.stop_consuming()
+        connection.close()
+
+
+if __name__ == '__main__':
+    consume_messages()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/publisher_app/consumer_2.py b/presnyakova_victoria_lab_4/publisher_app/consumer_2.py
new file mode 100644
index 0000000..224dee5
--- /dev/null
+++ b/presnyakova_victoria_lab_4/publisher_app/consumer_2.py
@@ -0,0 +1,27 @@
+import pika
+import time
+
+def callback(ch, method, properties, body):
+    print("Скрипт 2 обрабатывает дефект '{}'".format(body.decode()))
+    time.sleep(2)
+
+
+def consume_messages():
+    connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+    channel = connection.channel()
+
+    exchange_name = 'logs'
+    channel.exchange_declare(exchange=exchange_name, exchange_type='fanout')
+    channel.queue_declare(queue='example_queue_2')
+    channel.queue_bind(exchange=exchange_name, queue='example_queue_2')
+    channel.basic_consume(queue='example_queue_2', on_message_callback=callback, auto_ack=True)
+    print('Скрипт 2 ожидает дефектов')
+    try:
+        channel.start_consuming()
+    except KeyboardInterrupt:
+        print('Прервано. Останавливаем...')
+        channel.stop_consuming()
+        connection.close()
+
+if __name__ == '__main__':
+    consume_messages()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/publisher_app/publisher.py b/presnyakova_victoria_lab_4/publisher_app/publisher.py
new file mode 100644
index 0000000..764e680
--- /dev/null
+++ b/presnyakova_victoria_lab_4/publisher_app/publisher.py
@@ -0,0 +1,19 @@
+import pika
+import time
+
+
+def publish_messages():
+    connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
+    channel = connection.channel()
+
+    exchange_name = 'logs'
+    channel.exchange_declare(exchange=exchange_name, exchange_type='fanout')
+    channel.queue_declare(queue='example_queue')
+    # Отдаем сообщение в 'logs' exchange каждую секунду
+    while True:
+        message = "Дефект обнаружен"  # Сообщение
+        channel.basic_publish(exchange='logs', routing_key='', body=message)
+        print(f"Отправлено сообщение: {message}")
+        time.sleep(1)
+    print("Отправлено '{}'".format(message))
+    connection.close()
\ No newline at end of file
diff --git a/presnyakova_victoria_lab_4/readme.md b/presnyakova_victoria_lab_4/readme.md
new file mode 100644
index 0000000..eca939b
--- /dev/null
+++ b/presnyakova_victoria_lab_4/readme.md
@@ -0,0 +1,54 @@
+# Лабораторная работа №4 - Работа с брокером сообщений
+Lesson 1:
+![img.png](lessons/lesson_1/img.png) ![img.png](lessons/lesson_1/img_1.png)
+Lesson 2:
+![img.png](lessons/lesson_2/img.png) ![img.png](lessons/lesson_2/img_1.png)
+Lesson 3:
+![img.png](lessons/lesson_3/img.png) ![img.png](lessons/lesson_3/img_1.png)
+
+
+# Задачи
+
+Необходимо выбрать предметную область и разработать следующие приложения:
+
+1. **Publisher**.
+  Программа, которая создаёт один **exchange** с типом _fanout_.
+  Программа должна раз в секунду генерировать сообщения в журнал событий согласно вашей предметной области.
+  Например, событие "пришёл заказ" или "сообщение от пользователя" или "необходимо создать отчёт".
+2. **Consumer 1**.
+  Программа, которая создаёт под себя отдельную не анонимную (!) очередь (**queue**) (то есть имя queue НЕ пустая строка), создаёт **binding** на **exchange** и начинает принимать сообщения (_consume_).
+  Программа должна обрабатывать сообщения 2-3 секунды.
+  Можно реализовать через обычный _Thread.Sleep_ (для C#).
+3. **Consumer 2**.
+  Аналогично _Consumer 1_, только сообщения необходимо обрабатывать моментально.
+  Только имя очереди должно отличаться от _Consumer 1_.
+
+Далее необходимо собрать и запустить приложения одновременно по одному экземпляру.
+
+# Запуск
+
+Проект запускается в ide просто по нажатию у питон файла на функцию мейн.
+Нужно последовательно запустить функцию мейн у файлов app.py, consumer1.py, consumer2.py.
+Очередь сообщений запускается такой командой
+docker run -it --rm --name rabbitmq -p 5672:5672 -p 15672:15672 rabbitmq:3-management
+
+# Описание работы:
+Развернули два приложения
+Сервисы используем из предыдущей работы
+Предметная область - Скрипты и дефекты
+
+1. Consumer 1 - Скрипт 1:
+2. Consumer 2 - Скрипт 2:
+
+Оба скрипта обрабатывают дефекты.
+
+Flask-приложение с RabbitMQ, использующего библиотеку pika для publisher и для consumers. 
+Надо обязательно вызвать метод publish, иначе обработка дефектов не начнется.
+Приложение Flask (app.py), для источника дефектов (publisher) и двух скриптов-потребителей (consumer1.py и consumer2.py). 
+Запускаем приложение Flask и обоих потребителей запускаем отдельно в разных терминалах. 
+Consumer ы будут прослушивать сообщения, опубликованные publisher ом.
+
+![img.png](screens/img.png)
+
+# Ссылка на видео
+https://drive.google.com/file/d/1P8kKSZAre24I04DXL1WqkPtdL6RnDOPA/view?usp=sharing
diff --git a/presnyakova_victoria_lab_4/screens/img.png b/presnyakova_victoria_lab_4/screens/img.png
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