From a3827d5b4b82db08c679d476c25ca48c7433e006 Mon Sep 17 00:00:00 2001
From: yasha <yasha@PC>
Date: Sat, 14 Dec 2024 01:21:48 +0400
Subject: [PATCH] fadeeva_nastya_lab_3 is ready

---
 fadeeva_nastya_lab_3/README.md                | 38 +++++++++++++
 .../discipline_service/Dockerfile             | 10 ++++
 .../discipline_service/main.py                | 56 +++++++++++++++++++
 .../discipline_service/requirements.txt       |  1 +
 fadeeva_nastya_lab_3/docker-compose.yml       | 24 ++++++++
 fadeeva_nastya_lab_3/nginx/nginx.conf         | 11 ++++
 .../teacher_service/Dockerfile                | 10 ++++
 fadeeva_nastya_lab_3/teacher_service/main.py  | 54 ++++++++++++++++++
 .../teacher_service/requirements.txt          |  1 +
 9 files changed, 205 insertions(+)
 create mode 100644 fadeeva_nastya_lab_3/README.md
 create mode 100644 fadeeva_nastya_lab_3/discipline_service/Dockerfile
 create mode 100644 fadeeva_nastya_lab_3/discipline_service/main.py
 create mode 100644 fadeeva_nastya_lab_3/discipline_service/requirements.txt
 create mode 100644 fadeeva_nastya_lab_3/docker-compose.yml
 create mode 100644 fadeeva_nastya_lab_3/nginx/nginx.conf
 create mode 100644 fadeeva_nastya_lab_3/teacher_service/Dockerfile
 create mode 100644 fadeeva_nastya_lab_3/teacher_service/main.py
 create mode 100644 fadeeva_nastya_lab_3/teacher_service/requirements.txt

diff --git a/fadeeva_nastya_lab_3/README.md b/fadeeva_nastya_lab_3/README.md
new file mode 100644
index 0000000..ed15a76
--- /dev/null
+++ b/fadeeva_nastya_lab_3/README.md
@@ -0,0 +1,38 @@
+# Лабораторная работа №3 - REST API, Gateway и синхронный обмен между микросервисами
+
+## Задание
+
++ Создать 2 микросервиса, реализующих CRUD на связанных сущностях.
++ Реализовать механизм синхронного обмена сообщениями между микросервисами.
++ Реализовать шлюз на основе прозрачного прокси-сервера nginx.
+
+### Микросервисы
+1. **teacher_service** — сервис, который управляет информацией о пользователях
+
+2. **discipline_service** — сервис, который обрабатывает данные о заказах пользователей.
+
+### Критерии
+
++ Микросервисы должны быть связаны как 1-ко-многим.
+Например, учитель (teacher) может преподовать несколько дисциплин (discipline).
+
+## Описание работы
+
+Данная лабораторная работа написана на языке - pyton.
+
+1. Реализация синхронного обмена
+
+Сервис **teacher_service** отправляет HTTP-запросы к сервису **discipline_service** при выполнении определенных операций CRUD. Тем самым получим актуальную информацию о дисциплинах, связанных с конкретными учителем.
+
+2. Реализация gateway при помощи nginx
+
+Конфигурационный файл **Nginx** определяет настройки веб-сервера и обратного прокси. Он управляет входящими запросами и направляет их на соответствующие сервисы.
+
+3. Docker Compose
+
+Конфигурационный файл docker-compose.yml - это многоконтейнерное приложение, которое включает в себя три сервиса: teacher_servic, discipline_service и nginx.
+
+# Видеозапись работы программмы
+
+https://vkvideo.ru/video186826232_456239554
+
diff --git a/fadeeva_nastya_lab_3/discipline_service/Dockerfile b/fadeeva_nastya_lab_3/discipline_service/Dockerfile
new file mode 100644
index 0000000..851c5df
--- /dev/null
+++ b/fadeeva_nastya_lab_3/discipline_service/Dockerfile
@@ -0,0 +1,10 @@
+FROM python:3.11
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+CMD ["python", "main.py"]
\ No newline at end of file
diff --git a/fadeeva_nastya_lab_3/discipline_service/main.py b/fadeeva_nastya_lab_3/discipline_service/main.py
new file mode 100644
index 0000000..9c8da2e
--- /dev/null
+++ b/fadeeva_nastya_lab_3/discipline_service/main.py
@@ -0,0 +1,56 @@
+from flask import Flask, jsonify, request
+import uuid
+
+app = Flask(__name__)
+
+disciplines = {}
+
+# вывод всех заказов
+@app.route('/disciplines', methods=['GET'])
+def get_disciplines():
+    return jsonify(list(disciplines.values()))
+
+# получение заказа по uuid
+@app.route('/disciplines/<uuid:discipline_uuid>', methods=['GET'])
+def get_discipline(discipline_uuid):
+    discipline = disciplines.get(str(discipline_uuid))
+    if discipline:
+        return jsonify(discipline)
+    return jsonify({'error': 'Not found'}), 404
+
+# добавление нового заказа
+@app.route('/disciplines', methods=['POST'])
+def create_discipline():
+    data = request.json
+    discipline_uuid = str(uuid.uuid4())
+    discipline = {
+        'uuid': discipline_uuid,
+        'number': data['number'],
+        'discipline': data['discipline'],
+        'teacher_uuid': data['teacher_uuid']
+    }
+    disciplines[discipline_uuid] = discipline
+    return jsonify(discipline), 201
+
+# изменение заказа по uuid
+@app.route('/disciplines/<uuid:discipline_uuid>', methods=['PUT'])
+def update_discipline(discipline_uuid):
+    discipline = disciplines.get(str(discipline_uuid))
+    if not discipline:
+        return jsonify({'error': 'Not found'}), 404
+    data = request.json
+    discipline['number'] = data['number']
+    discipline['discipline'] = data['discipline']
+    discipline['teacher_uuid'] = data['teacher_uuid']
+    return jsonify(discipline)
+
+# удаление заказа по uuid
+@app.route('/disciplines/<uuid:discipline_uuid>', methods=['DELETE'])
+def delete_discipline(discipline_uuid):
+    if str(discipline_uuid) in disciplines:
+        del disciplines[str(discipline_uuid)]
+        return '', 204
+    return jsonify({'error': 'Not found'}), 404
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5001)
\ No newline at end of file
diff --git a/fadeeva_nastya_lab_3/discipline_service/requirements.txt b/fadeeva_nastya_lab_3/discipline_service/requirements.txt
new file mode 100644
index 0000000..2077213
--- /dev/null
+++ b/fadeeva_nastya_lab_3/discipline_service/requirements.txt
@@ -0,0 +1 @@
+Flask
\ No newline at end of file
diff --git a/fadeeva_nastya_lab_3/docker-compose.yml b/fadeeva_nastya_lab_3/docker-compose.yml
new file mode 100644
index 0000000..eb23633
--- /dev/null
+++ b/fadeeva_nastya_lab_3/docker-compose.yml
@@ -0,0 +1,24 @@
+services:
+  teacher_service:
+    build:
+      context: ./teacher_service
+      dockerfile: Dockerfile
+    ports:
+      - "5000:5000"
+
+  discipline_service:
+    build:
+      context: ./discipline_service
+      dockerfile: Dockerfile
+    ports:
+      - "5001:5001"
+
+  nginx:
+    image: nginx:latest
+    volumes:
+      - ./nginx/nginx.conf:/etc/nginx/conf.d/default.conf
+    ports:
+      - "80:80"
+    depends_on:
+      - teacher_service
+      - discipline_service
\ No newline at end of file
diff --git a/fadeeva_nastya_lab_3/nginx/nginx.conf b/fadeeva_nastya_lab_3/nginx/nginx.conf
new file mode 100644
index 0000000..860e84a
--- /dev/null
+++ b/fadeeva_nastya_lab_3/nginx/nginx.conf
@@ -0,0 +1,11 @@
+server {
+    listen 80;
+
+    location /teachers {
+        proxy_pass http://teacher_service:5000;
+    }
+
+    location /disciplines {
+        proxy_pass http://discipline_service:5001;
+    }
+}
\ No newline at end of file
diff --git a/fadeeva_nastya_lab_3/teacher_service/Dockerfile b/fadeeva_nastya_lab_3/teacher_service/Dockerfile
new file mode 100644
index 0000000..851c5df
--- /dev/null
+++ b/fadeeva_nastya_lab_3/teacher_service/Dockerfile
@@ -0,0 +1,10 @@
+FROM python:3.11
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+CMD ["python", "main.py"]
\ No newline at end of file
diff --git a/fadeeva_nastya_lab_3/teacher_service/main.py b/fadeeva_nastya_lab_3/teacher_service/main.py
new file mode 100644
index 0000000..9f671b8
--- /dev/null
+++ b/fadeeva_nastya_lab_3/teacher_service/main.py
@@ -0,0 +1,54 @@
+from flask import Flask, jsonify, request
+import uuid
+
+app = Flask(__name__)
+
+teachers = {}
+
+# вывод всех пользователей
+@app.route('/teachers', methods=['GET'])
+def get_teachers():
+    return jsonify(list(teachers.values()))
+
+# получение пользователя по uuid
+@app.route('/teachers/<uuid:teacher_uuid>', methods=['GET'])
+def get_teacher(teacher_uuid):
+    teacher = teachers.get(str(teacher_uuid))
+    if teacher:
+        return jsonify(teacher)
+    return jsonify({'error': 'Not found'}), 404
+
+# добавление нового пользователя
+@app.route('/teachers', methods=['POST'])
+def create_teacher():
+    data = request.get_json()
+    teacher_uuid = str(uuid.uuid4())
+    teacher = {
+        'uuid': teacher_uuid,
+        'name': data['name'],
+        'age': data['age']
+    }
+    teachers[teacher_uuid] = teacher
+    return jsonify(teacher), 201
+
+# изменение пользователя по uuid
+@app.route('/teachers/<uuid:teacher_uuid>', methods=['PUT'])
+def update_teacher(teacher_uuid):
+    teacher = teachers.get(str(teacher_uuid))
+    if not teacher:
+        return jsonify({'error': 'Not found'}), 404
+    data = request.get_json()
+    teacher['name'] = data['name']
+    teacher['age'] = data['age']
+    return jsonify(teacher)
+
+# удаление пользователя по uuid
+@app.route('/teachers/<uuid:teacher_uuid>', methods=['DELETE'])
+def delete_teacher(teacher_uuid):
+    if str(teacher_uuid) in teachers:
+        del teachers[str(teacher_uuid)]
+        return '', 204
+    return jsonify({'error': 'Not found'}), 404
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5000)
\ No newline at end of file
diff --git a/fadeeva_nastya_lab_3/teacher_service/requirements.txt b/fadeeva_nastya_lab_3/teacher_service/requirements.txt
new file mode 100644
index 0000000..2077213
--- /dev/null
+++ b/fadeeva_nastya_lab_3/teacher_service/requirements.txt
@@ -0,0 +1 @@
+Flask
\ No newline at end of file