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from __future__ import absolute_import
from apscheduler.schedulers.blocking import BlockingScheduler
from apscheduler.schedulers.base import BaseScheduler
try:
from gevent.event import Event
from gevent.lock import RLock
import gevent
except ImportError: # pragma: nocover
raise ImportError('GeventScheduler requires gevent installed')
class GeventScheduler(BlockingScheduler):
"""A scheduler that runs as a Gevent greenlet."""
_greenlet = None
def start(self, *args, **kwargs):
self._event = Event()
BaseScheduler.start(self, *args, **kwargs)
self._greenlet = gevent.spawn(self._main_loop)
return self._greenlet
def shutdown(self, *args, **kwargs):
super(GeventScheduler, self).shutdown(*args, **kwargs)
self._greenlet.join()
del self._greenlet
def _create_lock(self):
return RLock()
def _create_default_executor(self):
from apscheduler.executors.gevent import GeventExecutor
return GeventExecutor()
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