mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-26 03:23:58 +03:00
3a61457be7
* Fix a typo in the docblock of the Configuration provider * Update the changelog * Add tutorial sections * Switch to use https for httpbin.org requests * Add what we are going to build section * Fix ``Makefile`` to run ``aiohttp`` integration tests on Python 3.5+ * Add prerequisities and prepare the env sections * Add logging, config and the dispacher sections * Change logging * Fix multiple typos in the ``flask`` and ``aiohttp`` tutorials * Add the initial and dirty version * Fix multiple typos in the ``flask`` and ``aiohttp`` tutorials * Fix the 3.27.0 changelog * Finish all the parts before the dispatcher * Finish dispatcher section * Update http monitor logging format * Finish the tutorial * Fix docblock in the dispatcher module * Update changelog * Add meta keywords and description
66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
"""Dispatcher module."""
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import asyncio
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import logging
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import signal
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import time
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from typing import List
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from .monitors import Monitor
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class Dispatcher:
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def __init__(self, monitors: List[Monitor]) -> None:
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self._monitors = monitors
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self._monitor_tasks: List[asyncio.Task] = []
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self._logger = logging.getLogger(self.__class__.__name__)
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self._stopping = False
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def run(self) -> None:
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asyncio.run(self.start())
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async def start(self) -> None:
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self._logger.info('Starting up')
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for monitor in self._monitors:
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self._monitor_tasks.append(
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asyncio.create_task(self._run_monitor(monitor)),
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)
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asyncio.get_event_loop().add_signal_handler(signal.SIGTERM, self.stop)
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asyncio.get_event_loop().add_signal_handler(signal.SIGINT, self.stop)
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await asyncio.gather(*self._monitor_tasks, return_exceptions=True)
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self.stop()
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def stop(self) -> None:
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if self._stopping:
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return
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self._stopping = True
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self._logger.info('Shutting down')
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for task, monitor in zip(self._monitor_tasks, self._monitors):
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task.cancel()
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self._logger.info('Shutdown finished successfully')
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@staticmethod
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async def _run_monitor(monitor: Monitor) -> None:
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def _until_next(last: float) -> float:
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time_took = time.time() - last
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return monitor.check_every - time_took
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while True:
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time_start = time.time()
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try:
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await monitor.check()
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except asyncio.CancelledError:
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break
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except Exception:
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monitor.logger.exception('Error executing monitor check')
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await asyncio.sleep(_until_next(last=time_start))
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