def _sensorAlertHandler(self, incomingMessage):
logging.info("[%s]: Received sensor alert." % self.fileName)
# extract sensor alert values
sensorAlert = SensorAlert()
sensorAlert.timeReceived = int(time.time())
try:
if not self._checkMsgServerTime(
incomingMessage["serverTime"],
incomingMessage["message"]):
logging.error("[%s]: Received serverTime invalid."
% self.fileName)
return False
if not self._checkMsgAlertLevels(
incomingMessage["payload"]["alertLevels"],
incomingMessage["message"]):
logging.error("[%s]: Received alertLevels invalid."
% self.fileName)
return False
if not self._checkMsgDescription(
incomingMessage["payload"]["description"],
incomingMessage["message"]):
logging.error("[%s]: Received description invalid."
% self.fileName)
return False
if not self._checkMsgRulesActivated(
incomingMessage["payload"]["rulesActivated"],
incomingMessage["message"]):
logging.error("[%s]: Received rulesActivated invalid."
% self.fileName)
return False
if not self._checkMsgSensorId(
incomingMessage["payload"]["sensorId"],
incomingMessage["message"]):
logging.error("[%s]: Received sensorId invalid."
% self.fileName)
return False
if not self._checkMsgState(
incomingMessage["payload"]["state"],
incomingMessage["message"]):
logging.error("[%s]: Received state invalid."
% self.fileName)
return False
if not self._checkMsgHasOptionalData(
incomingMessage["payload"]["hasOptionalData"],
incomingMessage["message"]):
logging.error("[%s]: Received hasOptionalData invalid."
% self.fileName)
return False
if incomingMessage["payload"]["hasOptionalData"]:
if not self._checkMsgOptionalData(
incomingMessage["payload"]["optionalData"],
incomingMessage["message"]):
logging.error("[%s]: Received optionalData invalid."
% self.fileName)
return False
if not self._checkMsgSensorDataType(
incomingMessage["payload"]["dataType"],
incomingMessage["message"]):
logging.error("[%s]: Received dataType invalid."
% self.fileName)
return False
if incomingMessage["payload"]["dataType"] != SensorDataType.NONE:
if not self._checkMsgSensorData(
incomingMessage["payload"]["data"],
incomingMessage["payload"]["dataType"],
incomingMessage["message"]):
logging.error("[%s]: Received data invalid."
% self.fileName)
return False
if not self._checkMsgHasLatestData(
incomingMessage["payload"]["hasLatestData"],
incomingMessage["message"]):
logging.error("[%s]: Received hasLatestData invalid."
% self.fileName)
return False
if not self._checkMsgChangeState(
incomingMessage["payload"]["changeState"],
incomingMessage["message"]):
logging.error("[%s]: Received changeState invalid."
% self.fileName)
return False
sensorAlert.sensorId = incomingMessage["payload"]["sensorId"]
sensorAlert.alertLevels = incomingMessage["payload"]["alertLevels"]
sensorAlert.state = incomingMessage["payload"]["state"]
sensorAlert.description = incomingMessage["payload"]["description"]
sensorAlert.changeState = incomingMessage["payload"]["changeState"]
sensorAlert.rulesActivated = \
incomingMessage["payload"]["rulesActivated"]
# parse received data (if data transfer is activated)
sensorAlert.optionalData = None
sensorAlert.hasOptionalData = \
incomingMessage["payload"]["hasOptionalData"]
if sensorAlert.hasOptionalData:
sensorAlert.optionalData = incomingMessage[
"payload"]["optionalData"]
sensorAlert.changeState = incomingMessage["payload"]["changeState"]
sensorAlert.hasLatestData = \
incomingMessage["payload"]["hasLatestData"]
sensorAlert.dataType = incomingMessage["payload"]["dataType"]
sensorAlert.sensorData = None
if sensorAlert.dataType != SensorDataType.NONE:
sensorAlert.sensorData = incomingMessage["payload"]["data"]
except Exception as e:
logging.exception("[%s]: Received sensor alert " % self.fileName
+ "invalid.")
# send error message back
try:
utcTimestamp = int(time.time())
message = {"clientTime": utcTimestamp,
"message": incomingMessage["message"],
"error": "received sensor alert invalid"}
self.client.send(json.dumps(message))
except Exception as e:
pass
return False
# sending sensor alert response
logging.debug("[%s]: Sending sensor alert " % self.fileName
+ "response message.")
try:
payload = {"type": "response", "result": "ok"}
utcTimestamp = int(time.time())
message = {"clientTime": utcTimestamp,
"message": "sensoralert", "payload": payload}
self.client.send(json.dumps(message))
except Exception as e:
logging.exception("[%s]: Sending sensor alert " % self.fileName
+ "response failed.")
return False
# trigger all alerts that have the same alert level
atLeastOnceTriggered = False
for alert in self.alerts:
for alertLevel in sensorAlert.alertLevels:
if alertLevel in alert.alertLevels:
atLeastOnceTriggered = True
# trigger alert in an own thread to not block this one
alertTriggerProcess = AsynchronousAlertExecuter(alert)
alertTriggerProcess.sensorAlert = sensorAlert
# set thread to daemon
# => threads terminates when main thread terminates
alertTriggerProcess.daemon = True
alertTriggerProcess.triggerAlert = True
alertTriggerProcess.start()
break
# Write to log file if no alert was triggered for received sensorAlert.
if not atLeastOnceTriggered:
alertLevelsStr = ", ".join(map(str, sensorAlert.alertLevels))
logging.info("[%s]: No alert triggered for alertLevels: %s."
% (self.fileName, alertLevelsStr))
return True
