guideCity/backend/app/core/logging.py

import logging
import time
from collections.abc import Awaitable, Callable

from starlette.requests import Request
from starlette.responses import Response

request_logger = logging.getLogger("guidecity.http")


def configure_logging(level: int = logging.INFO) -> None:
    logging.basicConfig(
        level=level,
        format="%(asctime)s %(levelname)s %(name)s %(message)s",
    )


async def log_requests(
    request: Request,
    call_next: Callable[[Request], Awaitable[Response]],
) -> Response:
    """Logs method/path/status/duration for every request handled by the app."""
    start = time.perf_counter()
    try:
        response = await call_next(request)
    except Exception:
        duration_ms = (time.perf_counter() - start) * 1000
        request_logger.exception(
            "%s %s -> unhandled exception (%.1fms)", request.method, request.url.path, duration_ms
        )
        raise

    duration_ms = (time.perf_counter() - start) * 1000
    request_logger.info(
        "%s %s -> %d (%.1fms)", request.method, request.url.path, response.status_code, duration_ms
    )
    return response