66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
import asyncio
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import logging
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import pydantic
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log = logging.getLogger(__name__)
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class WorkerConfig(pydantic.BaseModel):
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INTERVAL_SECONDS: int = 60
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class WorkerBase:
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def __init__(self, config: WorkerConfig) -> None:
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self.config = config
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self._task: asyncio.Task[None] | None = None
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self._stop_event = asyncio.Event()
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log.info('Worker initialized (interval=%ds)', config.INTERVAL_SECONDS)
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async def _cycle_func(self) -> None:
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raise NotImplementedError
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async def start(self) -> None:
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if self._task is not None:
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log.warning('Worker already running')
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return
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self._stop_event.clear()
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self._task = asyncio.create_task(self._run())
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log.info('Worker started')
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async def stop(self) -> None:
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if self._task is None:
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log.warning('Worker not running')
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return
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self._stop_event.set()
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try:
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await asyncio.wait_for(self._task, timeout=5.0)
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except TimeoutError:
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log.warning('Worker did not stop in time, cancelling')
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self._task.cancel()
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try:
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await self._task
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except asyncio.CancelledError:
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pass
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except asyncio.CancelledError:
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log.info('Worker task cancelled')
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self._task = None
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log.info('Worker stopped')
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async def _run(self) -> None:
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while not self._stop_event.is_set():
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try:
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await self._cycle_func()
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except Exception:
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log.exception('Error in worker cycle')
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try:
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await asyncio.wait_for(self._stop_event.wait(), timeout=self.config.INTERVAL_SECONDS)
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except TimeoutError:
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pass # Время вышло, продолжаем
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