def is_due(self, last_run_at, now=None):
"""Returns tuple of two items ``(is_due, next_time_to_run)``,
where next time to run is in seconds.
See :meth:`unuk.contrib.tasks.models.PeriodicTask.is_due` for more information.
"""
rem_delta = self.remaining_estimate(last_run_at, now = now)
rem = timedelta_seconds(rem_delta)
if rem == 0:
return True, timedelta_seconds(self.run_every)
return False, rem
def scheduled_last_run_at(self):
'''The scheduled last run datetime. This is different from :attr:`last_run_at` only when :attr:`anchor` is set.'''
last_run_at = self.last_run_at
anchor = self.anchor
if last_run_at and anchor:
run_every = self.run_every
times = int(timedelta_seconds(last_run_at - anchor)\
/timedelta_seconds(run_every))
if times:
anchor += times*run_every
while anchor <= last_run_at:
anchor += run_every
while anchor > last_run_at:
anchor -= run_every
self.schedule.anchor = anchor
return anchor
else:
return last_run_at
