in spectator/meter/meter_id.py [0:0]
def _validate_tags(self, tags: Dict[str, str]) -> Dict[str, str]:
valid_tags = validate_tags(tags)
if valid_tags != tags:
msg = "MeterId(name=%s, tags=%s) is invalid due to tag keys or values which are not strings " \
"or are zero-length strings; proceeding with truncated tags MeterId(name=%s, tags=%s)"
self._logger.warning(msg, self._name, tags, self._name, valid_tags)
return valid_tags