def operator_validator(alert: Alert, validator_config: str) -> bool:
"""
Returns True if a recent observation is greater than or equal to
the value given in the validator config
"""
observation = alert.get_last_observation()
if not observation or observation.value in (None, np.nan):
return False
operator = json.loads(validator_config)["op"]
threshold = json.loads(validator_config)["threshold"]
return OPERATOR_FUNCTIONS[operator](observation.value, threshold)
def not_null_validator(
alert: Alert,
validator_config: str # pylint: disable=unused-argument
) -> bool:
"""Returns True if a recent observation is not NULL"""
observation = alert.get_last_observation()
# TODO: Validate malformed observations/observations with errors separately
if (not observation or observation.error_msg
or observation.value in (0, None, np.nan)):
return False
return True