Location Logging API

This project is a Location Logging API built using NestJS and TypeScript. The API allows users to submit their locations, log entry data for predefined areas, and provides endpoints for retrieving logs and managing geographic areas.

Features

• Location Submission: Users can submit their current location, which will be checked against predefined areas.
• Area Management: CRUD operations for areas.
• Location Logging: When a user enters an area, the event is logged.
• Throttling: Throttle requests to prevent abuse (rate limit set to 5 requests per minute per user).
• RabbitMQ Integration: Asynchronous processing for location submissions.
• Redis Cache: Caching for improved performance.
• Swagger Documentation: Automatically generated API documentation.
• Health Check Endpoint: Monitoring the health status of various services.
• Custom Logger: A custom logger using Winston for structured logging.

Technologies Used

• NestJS: Backend framework for building scalable server-side applications.
• TypeScript: Typed JavaScript used for development.
• TypeORM: Object Relational Mapper (ORM) for database management.
• PostgreSQL: Database for storing user and location data.
• RabbitMQ: Message broker for managing location submissions.
• Redis: Cache for faster access to frequently queried data.
• Swagger: API documentation using @nestjs/swagger.
• Winston: Logging framework used to provide a structured logging format.
• amqplib: Used to connect to RabbitMQ for managing message queues.
• Docker: Containerization of services for local development.

Getting Started

Prerequisites

• Node.js (v18 or higher)
• npm (v6 or higher)
• Docker and Docker Compose (optional, for containerized development)
• PostgreSQL (v14 or higher)
• Redis
• RabbitMQ

Installation

1. Clone the repository:

   git clone https://github.com/mertalicikoglu/location-logging-api.git
   cd location-logging-api

2. Install dependencies:

   npm install

3. Set up environment variables by creating a .env file in the root directory. Example configuration:

   DATABASE_URL=postgres://myuser:mypassword@db:5432/location_db
   RABBITMQ_URI=amqp://guest:guest@rabbitmq:5672
   THROTTLE_TTL=60
   THROTTLE_LIMIT=5

4. Run the PostgreSQL and Redis servers, or use Docker Compose for easier setup:

   docker-compose up -d

Running the Application

To run the application in development mode:

npm run start:dev

To run the application in production mode:

npm run build
npm run start:prod

Running with Docker

You can also run the application using Docker:

docker-compose up --build

Testing the API

You can test the API using tools like Postman or cURL. Swagger documentation is also available at http://localhost:3000/api for easy testing and exploration of endpoints.

Example Requests

• Add Area:

  curl -X POST http://localhost:3000/areas -H "Content-Type: application/json" -d '{"name": "Kadikoy Beach", "latitude": 40.991728, "longitude": 29.025716, "radius": 400}'

• Add Location:

  curl -X POST http://localhost:3000/locations -H "Content-Type: application/json" -d '{"userId": "user1", "latitude": 40.991728, "longitude": 29.025716}'

• Get Logs:

  curl http://localhost:3000/logs

Project Structure

• src/: Main source code directory.
  • common/: Common services and providers like logging and RabbitMQ integration.
  • location/: Location-related logic and controllers.
  • area/: Area-related CRUD operations.
  • log/: Log-related operations.
  • health/: Health check endpoint.
• docker-compose.yml: Docker configuration for running RabbitMQ, Redis, and PostgreSQL.
• README.md: Documentation for running and developing the project.

License

This project is licensed under the MIT License.

Contact

For any questions or suggestions, feel free to contact the author.