New Addon
Google BK
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from backup.config import Config, Setting
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from backup.file import JsonFileSaver
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from backup.worker import Worker
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from backup.exceptions import SupervisorFileSystemError
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from .harequests import HaRequests
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from injector import inject, singleton
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from backup.time import Time
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from backup.logger import getLogger
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from datetime import timedelta
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from asyncio import Lock
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LOGGER = getLogger(__name__)
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CHECK_DURATION = timedelta(seconds=60)
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ATTR_STATE = "state"
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ATTR_WATCHDOG = "watchdog"
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ATTR_NAME = "name"
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STATE_STOPPED = "stopped"
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STATE_STARTED = "started"
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STATES_STOPPED = ["stopped", "unknown", "error"]
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@singleton
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class AddonStopper(Worker):
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@inject
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def __init__(self, config: Config, requests: HaRequests, time: Time):
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super().__init__("StartandStopTimer", self.check, time, 10)
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self.requests = requests
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self.config = config
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self.time = time
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self.must_start = set()
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self.must_enable_watchdog = set()
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self.stop_start_check_time = time.now()
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self._backing_up = False
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self.allow_run = False
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self.lock = Lock()
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async def start(self, schedule=True):
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if schedule:
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await super().start()
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path = self.config.get(Setting.STOP_ADDON_STATE_PATH)
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if JsonFileSaver.exists(path):
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data = JsonFileSaver.read(path)
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self.must_enable_watchdog = set(data.get("watchdog", []))
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self.must_start = set(data.get("start", []))
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def allowRun(self):
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if not self.allow_run:
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for slug in self.config.get(Setting.STOP_ADDONS).split(','):
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if len(slug) == 0:
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continue
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self.must_start.add(slug)
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self.allow_run = True
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def isBackingUp(self, backingUp):
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self._backing_up = backingUp
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async def stopAddons(self, self_slug):
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async with self.lock:
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self._backing_up = True
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for slug in self.config.get(Setting.STOP_ADDONS).split(','):
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if slug == self_slug or len(slug) == 0:
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# Don't ask the supervisor to stop yourself. That would be BAD.
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continue
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try:
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info = await self.requests.getAddonInfo(slug)
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if info.get(ATTR_STATE, None) == STATE_STARTED:
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if info.get(ATTR_WATCHDOG, False):
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try:
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LOGGER.info("Temporarily disabling watchdog for addon '%s'", info.get(ATTR_NAME, slug))
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await self.requests.updateAddonOptions(slug, {ATTR_WATCHDOG: False})
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self.must_enable_watchdog.add(slug)
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except Exception as e:
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LOGGER.error("Unable to disable watchdog for addon {0}".format(info.get(ATTR_NAME, slug)))
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LOGGER.printException(e)
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try:
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LOGGER.info("Stopping addon '%s'", info.get(ATTR_NAME, slug))
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await self.requests.stopAddon(slug)
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self.must_start.add(slug)
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except Exception as e:
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LOGGER.error("Unable to stop addon '{0}'".format(info.get(ATTR_NAME, slug)))
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LOGGER.printException(e)
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except Exception as e:
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LOGGER.error("Unable to lookup info for addon '{0}', please check your configuration".format(slug))
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LOGGER.printException(e)
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self._save()
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async def startAddons(self):
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self._backing_up = False
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self.stop_start_check_time = self.time.now() + CHECK_DURATION
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await self.check()
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async def check(self):
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async with self.lock:
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if self._backing_up:
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return
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if not self.allow_run:
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return
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changes = False
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if len(self.must_start) > 0:
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for slug in list(self.must_start):
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try:
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info = await self.requests.getAddonInfo(slug)
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state = info.get(ATTR_STATE, None)
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if info.get(ATTR_STATE, None) in STATES_STOPPED:
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LOGGER.info("Starting addon '%s'", info.get(ATTR_NAME, slug))
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await self.requests.startAddon(slug)
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self.must_start.remove(slug)
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changes = True
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elif info.get(ATTR_STATE, None) == STATE_STARTED and self.time.now() > self.stop_start_check_time:
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# Give up on restarting it, looks like it was never stopped
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self.must_start.remove(slug)
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changes = True
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else:
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LOGGER.error(f"Addon '{info.get(ATTR_NAME, slug)} had unrecognized state {state}'. The addon will most likely be unable to automatically restart this addon.", )
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except Exception as e:
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LOGGER.error("Unable to start addon '%s'", slug)
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LOGGER.printException(e)
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self.must_start.remove(slug)
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changes = True
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if len(self.must_enable_watchdog) > 0:
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for slug in list(self.must_enable_watchdog):
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if slug in self.must_start:
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# Wait until we're done trying to start the addon before re-enabling the watchdog, otherwise the supervisor complains
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continue
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try:
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info = await self.requests.getAddonInfo(slug)
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if not info.get(ATTR_WATCHDOG, True):
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LOGGER.info("Re-enabling watchdog for addon '%s'", info.get(ATTR_NAME, slug))
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await self.requests.updateAddonOptions(slug, {ATTR_WATCHDOG: True})
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except Exception as e:
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LOGGER.error("Unable to re-enable watchdog for addon '%s'", slug)
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LOGGER.printException(e)
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self.must_enable_watchdog.remove(slug)
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changes = True
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if changes:
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self._save()
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def _save(self):
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try:
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path = self.config.get(Setting.STOP_ADDON_STATE_PATH)
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data = {"start": list(self.must_start), "watchdog": list(self.must_enable_watchdog)}
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JsonFileSaver.write(path, data)
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except OSError:
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raise SupervisorFileSystemError()
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