LoggerFactory frame name guessing is spoiled

[domenkozar]

Under following circumstances, name guessing from frames doesn't work:

• have structlog configured using stdlib logger and threadlocals
• create a module scan.py where structlog is used to call logger = get_logger();logger.debug(), but at the same time issues a venusian.scan()
• in a module foo.py that venusian picks up, have logger = get_logger() call at module level

You'll end up with a stacktrace in frame guessing from venusian call and logger in foo.py will have that logger cached. Printing foo.py:logger._logger.name confirms that.

[hynek]

Is that not fixable using ignore_frame_names as documented in http://www.structlog.org/en/stable/api.html#structlog.stdlib.LoggerFactory ?

[domenkozar]

No. I'd have to ignore every frame name in stack that venusian has during scanning, which could be dynamic and change with time while scan.py module is developed

[hynek]

Any suggestions?

I would tend to suggest to use get_logger(__name__) I guess? I’m not aware of better way to guess.

[domenkozar]

I think the best way to fix this is not to cache get_logger()._logger so aggressively. For current workaround I've used get_logger(__name__) as you said :)