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60 lines
2.0 KiB
Python
60 lines
2.0 KiB
Python
4 years ago
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from __future__ import absolute_import
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import sys
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from apscheduler.executors.base import BaseExecutor, run_job
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from apscheduler.util import iscoroutinefunction_partial
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try:
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from apscheduler.executors.base_py3 import run_coroutine_job
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except ImportError:
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run_coroutine_job = None
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class AsyncIOExecutor(BaseExecutor):
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"""
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Runs jobs in the default executor of the event loop.
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If the job function is a native coroutine function, it is scheduled to be run directly in the
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event loop as soon as possible. All other functions are run in the event loop's default
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executor which is usually a thread pool.
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Plugin alias: ``asyncio``
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"""
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def start(self, scheduler, alias):
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super(AsyncIOExecutor, self).start(scheduler, alias)
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self._eventloop = scheduler._eventloop
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self._pending_futures = set()
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def shutdown(self, wait=True):
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# There is no way to honor wait=True without converting this method into a coroutine method
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for f in self._pending_futures:
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if not f.done():
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f.cancel()
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self._pending_futures.clear()
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def _do_submit_job(self, job, run_times):
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def callback(f):
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self._pending_futures.discard(f)
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try:
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events = f.result()
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except BaseException:
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self._run_job_error(job.id, *sys.exc_info()[1:])
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else:
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self._run_job_success(job.id, events)
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if iscoroutinefunction_partial(job.func):
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if run_coroutine_job is not None:
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coro = run_coroutine_job(job, job._jobstore_alias, run_times, self._logger.name)
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f = self._eventloop.create_task(coro)
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else:
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raise Exception('Executing coroutine based jobs is not supported with Trollius')
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else:
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f = self._eventloop.run_in_executor(None, run_job, job, job._jobstore_alias, run_times,
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self._logger.name)
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f.add_done_callback(callback)
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self._pending_futures.add(f)
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