app/utils/logging_config.py

import logging
from logging.handlers import RotatingFileHandler
from app.config import LOG_LEVEL, LOG_FILE, LOG_MAX_BYTES, LOG_BACKUP_COUNT

logger = logging.getLogger("send_notifications")
if not logger.handlers:
    logger.setLevel(LOG_LEVEL)
    ch = logging.StreamHandler()
    ch.setLevel(LOG_LEVEL)
    ch_formatter = logging.Formatter(
        "%(asctime)s.%(msecs)03d %(levelname)s [%(name)s] %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S",
    )
    ch.setFormatter(ch_formatter)
    logger.addHandler(ch)
    try:
        fh = RotatingFileHandler(LOG_FILE, maxBytes=LOG_MAX_BYTES, backupCount=LOG_BACKUP_COUNT)
        fh.setLevel(LOG_LEVEL)
        fh.setFormatter(ch_formatter)
        logger.addHandler(fh)
    except Exception as e:
        logger.warning("Failed to create file handler for logging: %s", e)

log = logger