mirror of https://github.com/evilhero/mylar
63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
from __future__ import absolute_import
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from functools import wraps
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from apscheduler.schedulers.base import BaseScheduler
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from apscheduler.util import maybe_ref
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try:
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from twisted.internet import reactor as default_reactor
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except ImportError: # pragma: nocover
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raise ImportError('TwistedScheduler requires Twisted installed')
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def run_in_reactor(func):
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@wraps(func)
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def wrapper(self, *args, **kwargs):
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self._reactor.callFromThread(func, self, *args, **kwargs)
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return wrapper
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class TwistedScheduler(BaseScheduler):
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"""
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A scheduler that runs on a Twisted reactor.
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Extra options:
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=========== ========================================================
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``reactor`` Reactor instance to use (defaults to the global reactor)
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=========== ========================================================
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"""
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_reactor = None
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_delayedcall = None
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def _configure(self, config):
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self._reactor = maybe_ref(config.pop('reactor', default_reactor))
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super(TwistedScheduler, self)._configure(config)
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@run_in_reactor
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def shutdown(self, wait=True):
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super(TwistedScheduler, self).shutdown(wait)
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self._stop_timer()
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def _start_timer(self, wait_seconds):
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self._stop_timer()
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if wait_seconds is not None:
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self._delayedcall = self._reactor.callLater(wait_seconds, self.wakeup)
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def _stop_timer(self):
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if self._delayedcall and self._delayedcall.active():
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self._delayedcall.cancel()
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del self._delayedcall
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@run_in_reactor
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def wakeup(self):
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self._stop_timer()
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wait_seconds = self._process_jobs()
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self._start_timer(wait_seconds)
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def _create_default_executor(self):
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from apscheduler.executors.twisted import TwistedExecutor
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return TwistedExecutor()
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