A simple FastAPI application that logs all incoming requests to a file.

• Logs all HTTP requests to separate files per IP address
• Middleware-based request logging with processing time
• Catch-all endpoint that accepts any HTTP method and path
• Health check endpoint
• Detailed request logging including headers, body, and client IP
• IP-based log file separation for better organization

1. Install dependencies:

python -m venv .venv

pip install -r requirements.txt

python main.py

Or using uvicorn directly:

uvicorn main:app --host 0.0.0.0 --port 8000 --reload

The API will be available at http://localhost:8000

• GET / - Root endpoint
• GET /health - Health check
• ANY /{path:path} - Catch-all endpoint that logs any request

Requests are logged to separate files based on the client IP address in the logs/ directory:

• logs/requests_127_0_0_1.log - Requests from localhost
• logs/requests_192_168_1_100.log - Requests from 192.168.1.100
• logs/requests_2001_db8__1.log - Requests from IPv6 address 2001:db8::1

Each log file includes:

• Timestamp
• HTTP method and URL
• Client IP address
• Request headers
• Query parameters
• Request body (for POST/PUT/PATCH requests)
• Response status code
• Processing time

# Test the API
curl http://localhost:8000/
curl -X POST http://localhost:8000/test -d '{"key": "value"}'
curl http://localhost:8000/any/path/here

Check the logs/ directory to see IP-specific log files with all logged requests.