Harvey
df779c9e6d
* fix: Sync issues - AudioDB warmig + automatic sync skips * progress ui/ux + discovery and album fixes * artist fixes * several request level fixes and improvements * handle request fails + artist refresh + resilience fixes * fix format * fix stop sync fail + last.fn mbid issues + failures/validation reworks
90 lines
2.7 KiB
Python
90 lines
2.7 KiB
Python
import asyncio
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import logging
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import threading
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from typing import ClassVar
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logger = logging.getLogger(__name__)
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class TaskRegistry:
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_instance: ClassVar["TaskRegistry | None"] = None
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_instance_lock: ClassVar[threading.Lock] = threading.Lock()
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def __init__(self) -> None:
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self._tasks: dict[str, asyncio.Task] = {}
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self._lock = threading.Lock()
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@classmethod
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def get_instance(cls) -> "TaskRegistry":
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if cls._instance is None:
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with cls._instance_lock:
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if cls._instance is None:
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cls._instance = cls()
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return cls._instance
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def register(self, name: str, task: asyncio.Task) -> asyncio.Task:
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with self._lock:
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existing = self._tasks.get(name)
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if existing is not None and not existing.done():
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raise RuntimeError(f"Task '{name}' is already running")
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self._tasks[name] = task
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task.add_done_callback(lambda _t, _name=name: self._auto_unregister(_name, _t))
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return task
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def _auto_unregister(self, name: str, task: asyncio.Task) -> None:
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with self._lock:
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if self._tasks.get(name) is task:
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del self._tasks[name]
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def unregister(self, name: str) -> None:
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with self._lock:
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self._tasks.pop(name, None)
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async def cancel(self, name: str, grace_period: float = 10.0) -> None:
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with self._lock:
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task = self._tasks.pop(name, None)
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if task is None or task.done():
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return
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task.cancel()
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try:
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await asyncio.wait_for(task, timeout=grace_period)
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except asyncio.CancelledError:
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return
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except asyncio.TimeoutError:
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logger.warning("Task '%s' did not finish within grace period", name)
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async def cancel_all(self, grace_period: float = 10.0) -> None:
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with self._lock:
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tasks = dict(self._tasks)
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self._tasks.clear()
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if not tasks:
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return
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for name, task in tasks.items():
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if not task.done():
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task.cancel()
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done, pending = await asyncio.wait(
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tasks.values(), timeout=grace_period, return_when=asyncio.ALL_COMPLETED
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)
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for name, task in tasks.items():
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if task in pending:
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logger.warning("Task '%s' did not finish within grace period", name)
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def get_all(self) -> dict[str, asyncio.Task]:
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with self._lock:
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return dict(self._tasks)
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def is_running(self, name: str) -> bool:
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with self._lock:
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task = self._tasks.get(name)
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return task is not None and not task.done()
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def reset(self) -> None:
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with self._lock:
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self._tasks.clear()
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