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96 lines
3.4 KiB
Python
96 lines
3.4 KiB
Python
5 years ago
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from apscheduler.triggers.base import BaseTrigger
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from apscheduler.util import obj_to_ref, ref_to_obj
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class BaseCombiningTrigger(BaseTrigger):
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__slots__ = ('triggers', 'jitter')
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def __init__(self, triggers, jitter=None):
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self.triggers = triggers
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self.jitter = jitter
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def __getstate__(self):
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return {
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'version': 1,
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'triggers': [(obj_to_ref(trigger.__class__), trigger.__getstate__())
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for trigger in self.triggers],
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'jitter': self.jitter
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}
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def __setstate__(self, state):
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if state.get('version', 1) > 1:
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raise ValueError(
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'Got serialized data for version %s of %s, but only versions up to 1 can be '
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'handled' % (state['version'], self.__class__.__name__))
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self.jitter = state['jitter']
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self.triggers = []
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for clsref, state in state['triggers']:
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cls = ref_to_obj(clsref)
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trigger = cls.__new__(cls)
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trigger.__setstate__(state)
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self.triggers.append(trigger)
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def __repr__(self):
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return '<{}({}{})>'.format(self.__class__.__name__, self.triggers,
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', jitter={}'.format(self.jitter) if self.jitter else '')
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class AndTrigger(BaseCombiningTrigger):
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"""
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Always returns the earliest next fire time that all the given triggers can agree on.
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The trigger is considered to be finished when any of the given triggers has finished its
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schedule.
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Trigger alias: ``and``
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:param list triggers: triggers to combine
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:param int|None jitter: advance or delay the job execution by ``jitter`` seconds at most.
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"""
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__slots__ = ()
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def get_next_fire_time(self, previous_fire_time, now):
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while True:
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fire_times = [trigger.get_next_fire_time(previous_fire_time, now)
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for trigger in self.triggers]
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if None in fire_times:
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return None
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elif min(fire_times) == max(fire_times):
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return self._apply_jitter(fire_times[0], self.jitter, now)
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else:
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now = max(fire_times)
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def __str__(self):
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return 'and[{}]'.format(', '.join(str(trigger) for trigger in self.triggers))
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class OrTrigger(BaseCombiningTrigger):
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"""
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Always returns the earliest next fire time produced by any of the given triggers.
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The trigger is considered finished when all the given triggers have finished their schedules.
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Trigger alias: ``or``
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:param list triggers: triggers to combine
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:param int|None jitter: advance or delay the job execution by ``jitter`` seconds at most.
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.. note:: Triggers that depends on the previous fire time, such as the interval trigger, may
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seem to behave strangely since they are always passed the previous fire time produced by
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any of the given triggers.
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"""
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__slots__ = ()
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def get_next_fire_time(self, previous_fire_time, now):
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fire_times = [trigger.get_next_fire_time(previous_fire_time, now)
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for trigger in self.triggers]
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fire_times = [fire_time for fire_time in fire_times if fire_time is not None]
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if fire_times:
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return self._apply_jitter(min(fire_times), self.jitter, now)
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else:
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return None
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def __str__(self):
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return 'or[{}]'.format(', '.join(str(trigger) for trigger in self.triggers))
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