fastapi_app/scripts/logging.py

import logging
import sys
from logging.handlers import RotatingFileHandler
from pathlib import Path


def get_logger(name: str) -> logging.Logger:
    logger = logging.getLogger(name)
    
    if logger.hasHandlers():
        return logger
    
    logger.setLevel(logging.DEBUG)
    logs_dir = Path("logs")
    logs_dir.mkdir(exist_ok=True)
    
    formatter = logging.Formatter(
        fmt="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S"
    )
    
    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(logging.INFO)
    console_handler.setFormatter(formatter)
    logger.addHandler(console_handler)
    
    file_handler = RotatingFileHandler(
        logs_dir / "app.log",
        maxBytes=10 * 1024 * 1024,
        backupCount=5
    )
    file_handler.setLevel(logging.DEBUG)
    file_handler.setFormatter(formatter)
    logger.addHandler(file_handler)
    
    return logger