how to Unify Python logging(loguru) for a Gunicorn/Uvicorn/FastAPI application?

yuanjie-ai commented 1 year ago

AlTosterino commented 1 year ago

You'll need to use InterceptHandler as in README.md to propagate any other logger message through loguru sink.

Sample of my configuration (uvicorn/django-ninja)

    class InterceptHandler(logging.Handler):
    def emit(self, record):
        # Get corresponding Loguru level if it exists.
        try:
            level = logger.level(record.levelname).name
        except ValueError:
            level = record.levelno

        # Find caller from where originated the logged message.
        frame, depth = sys._getframe(6), 6
        while frame and frame.f_code.co_filename == logging.__file__:
            frame = frame.f_back
            depth += 1

        logger.opt(depth=depth, exception=record.exc_info).log(level, record.getMessage())

    logger.remove() # Will remove all handlers already configured
    # Line below will attach a new handler (InterceptHandler) which catches messages (starting from "WARNING" level) by any other package logger
    # and map it to loguru level. It'll also properly set tracebacks etc.
    logging.basicConfig(handlers=[InterceptHandler()], level="WARNING", force=True)

    # This line is adding default loguru handler which sends messages to sink
    logger.add(sys.stdout)

Delgan commented 1 year ago

The title of this ticket exactly matches this blog post Unify Python logging for a Gunicorn/Uvicorn/FastAPI application.

Please provide more details regarding the difficulties you're experiencing and the questions that this article was unable to address.

sanmai-NL commented 1 week ago

@yuanjie-ai Can this be closed?

Delgan / loguru

how to Unify Python logging(loguru) for a Gunicorn/Uvicorn/FastAPI application? #944