示例#1
0
 def lockTimeRemaining(self):
     """
     returns the seconds the lock remains valid
     """
     if self.lockedAt is not None:
         timeoutPoint = pointOfTimeout()
         if self.lockedAt > timeoutPoint:
             #lock is valid
             timeConsumed = (datetime.utcnow().replace(tzinfo=utc) - self.lockedAt)
             LOCK_TIMEOUT = getattr(settings, 'LOCK_TIMEOUT', 1800)
             delta = timedelta(seconds=LOCK_TIMEOUT)
             remaining = delta - timeConsumed
             remainingSeconds = remaining.total_seconds()
             #calculate minutes, hours, seconds
             hours, remainder = divmod(remainingSeconds, 3600)
             minutes, seconds = divmod(remainder, 60)
             if hours == 0 and minutes == 0:
                 timeRemaining = '%s seconds' % ("{0:.0f}".format(seconds))
             elif hours == 0:
                 timeRemaining = '%s minutes and %s seconds' % ("{0:.0f}".format(minutes), "{0:.0f}".format(seconds))
             else:
                 timeRemaining = '%s hours, %s minutes and %s seconds' % ("{0:.0f}".format(hours), "{0:.0f}".format(minutes), "{0:.0f}".format(seconds))
             return timeRemaining
         else:
             #lock expired
             return 0
     else:
         #no lock set
         return 0
示例#2
0
 def checkLockStatus(self):
     """
     Returns True if the lock is valid,
     returns False if the lock has been expired or has not been set.
     If lock has been expired method unlocks the lock and saves the
     instance.
     """
     if self.lockedAt is not None:
         if self.lockedAt > pointOfTimeout():
             #lock is still valid
             return True
         else:
             #lock expired. unlock the lock
             self.lockedAt = None
             self.lockedBy = None
             self.lockedFlag = False
             self.save()
             return False
     return False
 def get_query_set(self):
     timeout = pointOfTimeout()
     return super(LockedManager, self).get_query_set().filter(
                                         lockedAt__gt=timeout,
                                         lockedAt__isnull=False)
 def get_query_set(self):
     timeout = pointOfTimeout()
     return super(UnlockedManager, self).get_query_set().filter(
                                         Q(lockedAt__lte=timeout) |
                                         Q(lockedAt__isnull=True))