281 lines
9.5 KiB
Python
281 lines
9.5 KiB
Python
import asyncio
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import re
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from typing import Any
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from aiohttp import web
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from app.library.log import get_logger
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from .cache import Cache
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from .config import Config
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from .Events import EventBus, Events
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from .httpx_client import get_async_client
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from .Scheduler import Scheduler
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from .Singleton import Singleton
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from .version import APP_VERSION
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LOG = get_logger()
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class UpdateChecker(metaclass=Singleton):
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"""
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Checks for application updates from GitHub releases.
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"""
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GITHUB_API_URL: str = "https://api.github.com/repos/arabcoders/ytptube/releases/latest"
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"GitHub API endpoint for latest release"
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YTDLP_API_URL: str = "https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest"
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"GitHub API endpoint for yt-dlp latest release"
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CACHE_DURATION: int = 300
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"Cache duration in seconds (5 minutes)"
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CACHE_KEY: str = "update_checker:result"
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"Cache key for storing check results"
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YTDLP_CACHE_KEY: str = "update_checker:ytdlp"
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"Cache key for storing yt-dlp check results"
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def __init__(
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self, config: Config | None = None, scheduler: Scheduler | None = None, notify: EventBus | None = None
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) -> None:
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self._config: Config = config or Config.get_instance()
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"Instance of Config to use."
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self._scheduler: Scheduler = scheduler or Scheduler.get_instance()
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"Instance of Scheduler to use."
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self._notify: EventBus = notify or EventBus.get_instance()
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"Instance of EventBus for notifications."
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self._cache: Cache = Cache()
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"Instance of Cache for caching check results."
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self._job_id: str | None = None
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"Scheduler job ID for update checks."
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@staticmethod
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def get_instance(
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config: Config | None = None, scheduler: Scheduler | None = None, notify: EventBus | None = None
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) -> "UpdateChecker":
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return UpdateChecker(config=config, scheduler=scheduler, notify=notify)
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def attach(self, _: web.Application) -> None:
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from .Services import Services
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Services.get_instance().add("update_checker", self)
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if not self._config.check_for_updates:
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LOG.info("Update checking is disabled.")
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return
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if re.search(r"^v\d+", APP_VERSION) is None:
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LOG.warning("Not on a release version, skipping update checker setup.")
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return
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async def event_handler(_, __):
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await self.check_for_updates()
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self._notify.subscribe(
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event=Events.STARTED,
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callback=event_handler,
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name=f"{UpdateChecker.__name__}.{type(self).attach.__name__}",
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)
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self._schedule_check()
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async def on_shutdown(self, _: web.Application | None) -> None:
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"""
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Handle application shutdown event.
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Args:
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_ (web.Application): The aiohttp web application instance.
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"""
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if not self._job_id:
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return
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self._scheduler.remove(self._job_id)
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self._job_id = None
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def _schedule_check(self) -> None:
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if not self._config.check_for_updates:
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return
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timer: str = "0 3 * * *"
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self._job_id = self._scheduler.add(
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timer=timer,
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func=lambda: asyncio.create_task(self.check_for_updates()),
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id=f"{UpdateChecker.__name__}.{self.check_for_updates.__name__}",
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)
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async def check_for_updates(self) -> tuple[tuple[str, str | None], tuple[str, str | None]]:
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"""
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Check for updates from GitHub releases for both the app and yt-dlp.
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Updates config.new_version and config.yt_new_version if newer versions are available.
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Stops the scheduled task if an app update is found.
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Returns:
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tuple[tuple[str, str | None], tuple[str, str | None]]: ((app_status, app_version), (ytdlp_status, ytdlp_version))
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status: "disabled", "error", "up_to_date", or "update_available"
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version: The new version tag if available, None otherwise
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"""
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if not self._config.check_for_updates:
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return (("disabled", None), ("disabled", None))
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app_cached = await self._cache.aget(self.CACHE_KEY)
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ytdlp_cached = await self._cache.aget(self.YTDLP_CACHE_KEY)
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if app_cached and ytdlp_cached:
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return (app_cached, ytdlp_cached)
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app_result = app_cached or await self._check_app_version()
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ytdlp_result = ytdlp_cached or await self._check_ytdlp_version()
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return (app_result, ytdlp_result)
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async def _check_github_version(
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self,
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name: str,
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api_url: str,
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current_version: str,
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cache_key: str,
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strip_v_prefix: bool = False,
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) -> tuple[str, str | None]:
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try:
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LOG.info(
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"Checking whether %s has an update available.",
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name,
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extra={"target_name": name, "api_url": api_url, "current_version": current_version},
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)
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client = get_async_client(use_curl=False)
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response = await client.get(
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api_url,
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headers={"Accept": "application/vnd.github+json"},
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timeout=10.0,
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)
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if 200 != response.status_code:
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LOG.warning(
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"Failed to check for %s updates: HTTP %s",
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name,
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response.status_code,
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extra={"target_name": name, "api_url": api_url, "status_code": response.status_code},
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)
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return ("error", None)
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data: dict[str, Any] = response.json()
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latest_tag: str = data.get("tag_name", "")
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if not latest_tag:
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LOG.warning(
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"No tag_name found in %s GitHub release data.",
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name,
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extra={"target_name": name, "api_url": api_url},
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)
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return ("error", None)
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compare_current: str = current_version.lstrip("v") if strip_v_prefix else current_version
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compare_latest: str = latest_tag.lstrip("v") if strip_v_prefix else latest_tag
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if self._compare_versions(compare_current, compare_latest):
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LOG.warning(
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"%s has an update available: %s -> %s.",
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name,
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current_version,
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latest_tag,
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extra={"target_name": name, "current_version": current_version, "latest_version": latest_tag},
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)
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result = ("update_available", latest_tag)
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await self._cache.aset(cache_key, result, self.CACHE_DURATION)
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return result
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LOG.info(
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"%s is already up to date.",
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name,
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extra={"target_name": name, "current_version": current_version},
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)
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result = ("up_to_date", None)
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await self._cache.aset(cache_key, result, self.CACHE_DURATION)
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return result
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except Exception as e:
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LOG.exception(
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"Failed to check whether %s has an update available.",
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name,
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extra={
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"target_name": name,
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"api_url": api_url,
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"cache_key": cache_key,
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"exception_type": type(e).__name__,
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},
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)
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return ("error", None)
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async def _check_app_version(self) -> tuple[str, str | None]:
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status, new_version = await self._check_github_version(
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name="application",
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api_url=self.GITHUB_API_URL,
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current_version=APP_VERSION,
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cache_key=self.CACHE_KEY,
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strip_v_prefix=True,
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)
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if "update_available" == status:
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self._config.new_version = new_version or ""
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await self.on_shutdown(None)
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elif "up_to_date" == status:
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self._config.new_version = ""
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return (status, new_version)
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async def _check_ytdlp_version(self) -> tuple[str, str | None]:
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current_version: str = self._config._ytdlp_version()
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if not current_version or "0.0.0" == current_version:
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LOG.warning("Skipping the yt-dlp update check because the current version could not be determined.")
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return ("error", None)
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status, new_version = await self._check_github_version(
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name="yt-dlp",
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api_url=self.YTDLP_API_URL,
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current_version=current_version,
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cache_key=self.YTDLP_CACHE_KEY,
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strip_v_prefix=False,
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)
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if "update_available" == status:
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self._config.yt_new_version = new_version or ""
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elif "up_to_date" == status:
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self._config.yt_new_version = ""
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return (status, new_version)
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def _compare_versions(self, current: str, latest: str) -> bool:
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"""
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Compare version strings to determine if an update is available.
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Args:
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current (str): Current version string
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latest (str): Latest version string
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Returns:
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bool: True if latest > current, False otherwise
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"""
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try:
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from packaging.version import parse as parse_version
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return parse_version(latest) > parse_version(current)
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except Exception as e:
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LOG.warning(
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"Failed to compare versions '%s' and '%s' because %s.",
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current,
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latest,
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e,
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extra={"current_version": current, "latest_version": latest, "exception_type": type(e).__name__},
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exc_info=True,
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)
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return False
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