mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-24 02:24:02 +03:00
2fc3606671
* Add prototype * Update .pydocstylerc * Add tests * Remove one of the tests * Fix typo in the giphynav-aiohttp * Add README * Fix flake8
73 lines
2.0 KiB
Python
73 lines
2.0 KiB
Python
"""Dispatcher module."""
|
|
|
|
import asyncio
|
|
import logging
|
|
import signal
|
|
import time
|
|
from typing import List
|
|
|
|
from .monitors import Monitor
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class Dispatcher:
|
|
|
|
def __init__(self, monitors: List[Monitor]) -> None:
|
|
self._monitors = monitors
|
|
self._monitor_tasks: List[asyncio.Task] = []
|
|
self._stopping = False
|
|
|
|
def run(self) -> None:
|
|
asyncio.run(self.start())
|
|
|
|
async def start(self) -> None:
|
|
logger.info('Dispatcher is starting up')
|
|
|
|
for monitor in self._monitors:
|
|
self._monitor_tasks.append(
|
|
asyncio.create_task(self._run_monitor(monitor)),
|
|
)
|
|
logger.info(
|
|
'Monitoring task has been started %s',
|
|
monitor.full_name,
|
|
)
|
|
|
|
asyncio.get_event_loop().add_signal_handler(signal.SIGTERM, self.stop)
|
|
asyncio.get_event_loop().add_signal_handler(signal.SIGINT, self.stop)
|
|
|
|
await asyncio.gather(*self._monitor_tasks, return_exceptions=True)
|
|
|
|
self.stop()
|
|
|
|
def stop(self) -> None:
|
|
if self._stopping:
|
|
return
|
|
|
|
self._stopping = True
|
|
|
|
logger.info('Dispatcher is shutting down')
|
|
for task, monitor in zip(self._monitor_tasks, self._monitors):
|
|
task.cancel()
|
|
logger.info('Monitoring task has been stopped %s', monitor.full_name)
|
|
logger.info('Dispatcher shutting down finished successfully')
|
|
|
|
@staticmethod
|
|
async def _run_monitor(monitor: Monitor) -> None:
|
|
def _until_next(last: float) -> float:
|
|
time_took = time.time() - last
|
|
return monitor.check_every - time_took
|
|
|
|
while True:
|
|
time_start = time.time()
|
|
|
|
try:
|
|
await monitor.check()
|
|
except asyncio.CancelledError:
|
|
break
|
|
except Exception:
|
|
monitor.logger.exception('Error running monitoring check')
|
|
|
|
await asyncio.sleep(_until_next(last=time_start))
|