Home Assistant, App Daemon module to monitor for stale sensors

stale_sensor.py

import appdaemon.appapi as appapi
import homeassistant.util.dt as dt_util

#
# Notify stale sensors.
# Each minute last update of sensor is checked to see if it is higher than the configured value
#
# Args:
# sensor = sensor to monitor
# tiempo = minutes threshold to notify
# notify = comma separated list of notifiers
#

class StaleSensor(appapi.AppDaemon):

  def initialize(self):
    time = datetime.time(0, 0, 0)
    self.run_minutely(self.check_sensor, time)

  def check_sensor(self, kwargs):
    now = dt_util.now()
    sensor_last_updated_str = self.get_state(self.args["sensor"], "last_updated")
    sensor_last_updated = dt_util.parse_datetime(sensor_last_updated_str)

    tiempo = int(self.args["tiempo"])

    stale_time = now - sensor_last_updated
    if stale_time.seconds > tiempo*60:
      print("Se ha pasado de tiempo")
      for notifier in self.args["notify"].split(","):
        self.notify("Sensor {} is stale for {}".format(self.args["sensor"], stale_time), title="Sensor without updates", name=notifier)