class AlarmLogThread(object):
""" Separate thread for alarm logging stuff.
It starts to log in separate thread as new instance will be done or _start() method will be called
Timer could be stopped be calling stop() method. """
def __init__(self, resources):
# try:
self._mutex = threading.RLock()
logging.info('Starting alarm logging thread')
self._resources = resources
self._plcHelper = self._resources.plcManager.getAlarmHelper()
db = self._resources.getDbManager()
self._log = AlarmLog(db)
self._period = 10
self._start()
# except Exception as ex:
# raise ConfigurationException(ex)
def _start(self):
""" Starts timer to run, function is looped by itself.
Should be interrupted by calling timer.cancel() in other case it will become a daemon """
self._doWork()
self._timer = threading.Timer(self._period, self._start)
self._timer.start()
def stop(self):
""" Thread safe method for stopping timer. It will finish as soon as timer
thread stops working and thread will be closed"""
with self._mutex:
self._timer.cancel()
self._timer.join()
def _doWork(self):
""" All logging stuff performs here. This method is calling by logging thread """
with self._mutex:
if self._resources.plcManager.isConnected():
nextAlarm = self._plcHelper.getNextAlarm()
while nextAlarm:
print('Processing alarm')
print(nextAlarm)
self.storeRecord(nextAlarm)
nextAlarm = self._plcHelper.getNextAlarm()
def storeRecord(self, nextAlarm):
self._log.cleanValues()
self._log.setCode(nextAlarm[0])
self._log.setAction(nextAlarm[1])
self._log.setTime(int(nextAlarm[2])-2*60*60)
self._log.writeToLog()
