User Service - Pizza Delivery API

Overview

The User Service is a microservice in the Pizza Delivery API system. It is responsible for user authentication, registration, and token management using FastAPI, SQLAlchemy, and JWT authentication. The service is containerized using Docker and connects to a PostgreSQL database.

Features

• User Registration (Signup)
• User Login with JWT authentication
• Token Refresh Mechanism
• Database Integration using PostgreSQL
• Dockerized Deployment

Technologies Used

• FastAPI (Backend Framework)
• SQLAlchemy (ORM)
• PostgreSQL (Database)
• Docker & Docker Compose (Containerization)
• Alembic (Database Migrations)
• Pydantic (Data Validation)
• JWT Authentication

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Getting Started

1. Clone the Repository

git clone https://github.com/your-username/user-service.git
cd user-service

2. Set Up Environment Variables

Create a .env file in the root directory and define the following variables:

DATABASE_URL=postgresql+psycopg2://username:password@postgres:5433/user_service
SECRET_KEY= Your_JWT_secrete_key
JWT_ALGORITHM=HS256
JWT_ACCESS_TOKEN_EXPIRE_MINUTES=30
JWT_REFRESH_TOKEN_EXPIRE_MINUTES=1400

3. Run the Service Using Docker

a) Build and Run the Containers

docker-compose up --build -d

b) Run Database Migrations

docker exec -it user-service-container alembic upgrade head

4. Access the API Documentation

Once the container is running, you can access the API docs at:

• Swagger UI: http://localhost:8000/docs
• ReDoc: http://localhost:8000/redoc

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API Endpoints

Endpoint	Method	Description
/signup	POST	User registration
/login	POST	User login and token generation
/refresh	POST	Refresh access token

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Database Migrations

If you make any changes to your models, run the following command to create a new migration:

docker exec -it user-service-container alembic revision --autogenerate -m "migration message"
docker exec -it user-service-container alembic upgrade head

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Stopping the Service

To stop the running containers:

docker-compose down

License

This project is licensed under the MIT License.

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Author

Suyash Nikam
GitHub | LinkedIn