mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-24 10:34:01 +03:00
7d160cb4a5
* Update main example * Updating wiring module * Update wiring test case name * Implement string imports for wiring * Update example * Refactor implementation * Update front example * Fix a typo in README * Update wiring docs * Update single container example * Update multiple containers example * Update quotes in multiple containers example * Update quotes in single container example * Update decoupled-packages example * Update single and multiple containers example * Update quotes * Update fastapi+redis example * Update resource docs * Update quotes in CLI tutorial * Update CLI application (movie lister) tutorial * Update monitoring daemon example * Update python version in asyncio daemon example * Update asyncio daemon tutorial * Update quotes in wiring docs * Update wiring docs
67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
"""Dispatcher module."""
|
|
|
|
import asyncio
|
|
import logging
|
|
import signal
|
|
import time
|
|
from typing import List
|
|
|
|
from .monitors import Monitor
|
|
|
|
|
|
class Dispatcher:
|
|
|
|
def __init__(self, monitors: List[Monitor]) -> None:
|
|
self._monitors = monitors
|
|
self._monitor_tasks: List[asyncio.Task] = []
|
|
self._logger = logging.getLogger(self.__class__.__name__)
|
|
self._stopping = False
|
|
|
|
def run(self) -> None:
|
|
asyncio.run(self.start())
|
|
|
|
async def start(self) -> None:
|
|
self._logger.info("Starting up")
|
|
|
|
for monitor in self._monitors:
|
|
self._monitor_tasks.append(
|
|
asyncio.create_task(self._run_monitor(monitor)),
|
|
)
|
|
|
|
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
|
|
|
|
self._logger.info("Shutting down")
|
|
for task, monitor in zip(self._monitor_tasks, self._monitors):
|
|
task.cancel()
|
|
self._monitor_tasks.clear()
|
|
self._logger.info("Shutdown 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 executing monitor check")
|
|
|
|
await asyncio.sleep(_until_next(last=time_start))
|