235 lines
7.9 KiB
Python
235 lines
7.9 KiB
Python
# app/tasks/generation_recovery_tasks.py
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from __future__ import annotations
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import logging
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from typing import Any, Awaitable, Callable, Dict
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from app.config import settings
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from app.models.base import async_session
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from app.services.redis_registry_service import get_registry_redis, redis_acquire_lock, redis_release_lock
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from app.tasks.async_runner import run_async
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from app.tasks.celery_app import celery_app
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logger = logging.getLogger("video_gen")
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RECOVERY_QUEUE = settings.CELERY_RECOVERY_QUEUE or "gen_recovery"
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RecoveryRunner = Callable[[], Awaitable[Dict[str, Any]]]
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async def _run_download_once() -> Dict[str, Any]:
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from app.services.generation_recovery_service import recover_download_tasks_once
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async with async_session() as db:
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return await recover_download_tasks_once(db)
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async def _run_generation_once() -> Dict[str, Any]:
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from app.services.generation_recovery_service import recover_generation_tasks_once
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async with async_session() as db:
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return await recover_generation_tasks_once(db)
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async def _run_module_async_once() -> Dict[str, Any]:
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from app.services.module_async_recovery_service import recover_module_async_tasks_once
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async with async_session() as db:
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return await recover_module_async_tasks_once(db)
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async def _run_shot_split_once() -> Dict[str, Any]:
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from app.services.shot_replicate_recovery_service import recover_shot_split_tasks_once
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async with async_session() as db:
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return await recover_shot_split_tasks_once(db)
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async def _run_with_execution_lock(
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*,
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lock_key: str,
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log_context: str,
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runner: RecoveryRunner,
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) -> Dict[str, Any]:
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"""恢复任务执行锁。
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worker_ready 的启动锁只保证“只投递一次”；如果 broker 中残留旧消息，
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或者人工手动触发恢复任务，仍可能并发执行。这里再加执行锁，避免多个
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恢复扫描同时扫库、抢行锁、抢连接池。
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"""
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redis = await get_registry_redis()
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token: str | None = None
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if redis is not None:
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token = await redis_acquire_lock(
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lock_key=lock_key,
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ttl_seconds=int(settings.CELERY_RECOVERY_TASK_LOCK_TTL_SECONDS or 600),
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log_context=log_context,
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)
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if not token:
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return {"skipped": "lock_held", "lock_key": lock_key}
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else:
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# Redis 不可用时仍允许 DB fallback 执行一次，避免恢复能力彻底失效。
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logger.warning("恢复任务执行锁不可用，降级直接执行。context=%s", log_context)
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try:
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result = await runner()
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result["execution_lock"] = "lock_acquired" if token else "redis_unavailable_run_db_fallback"
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return result
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finally:
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if token:
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await redis_release_lock(lock_key=lock_key, token=token, log_context=log_context)
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async def _acquire_download_recovery_loop_lock() -> tuple[bool, str]:
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"""下载恢复循环锁。
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Redis 不可用时降级为直接执行 DB fallback，避免恢复能力彻底失效；
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Redis 可用但锁被其他 worker 持有时，本轮跳过，不再重复投递下一轮。
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"""
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redis = await get_registry_redis()
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if redis is None:
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return True, "redis_unavailable_run_db_fallback"
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token = await redis_acquire_lock(
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lock_key=settings.DOWNLOAD_RECOVERY_LOOP_LOCK_KEY,
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ttl_seconds=int(settings.DOWNLOAD_RECOVERY_LOOP_LOCK_TTL_SECONDS or 55),
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log_context="download_recovery_loop",
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)
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return (bool(token), "lock_acquired" if token else "lock_held")
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def _schedule_next_download_recovery_loop() -> None:
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if not celery_app or not bool(getattr(settings, "DOWNLOAD_RECOVERY_LOOP_ENABLED", False)):
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return
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try:
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recover_download_tasks_once.apply_async(
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countdown=max(1, int(settings.DOWNLOAD_RECOVERY_INTERVAL_SECONDS or 60)),
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queue=RECOVERY_QUEUE,
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priority=settings.DOWNLOAD_TASK_PRIORITY_RECOVER,
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)
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except Exception:
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logger.exception("下载恢复循环下一轮投递失败")
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async def _run_startup_recovery_once() -> Dict[str, Any]:
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"""启动容灾协调器：串行跑恢复扫描。
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真实业务任务仍投递回原队列：
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- 创建/提词/视频分析 -> gen_chatapi_create
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- provider poll -> gen_provider_poll
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- 下载/ffmpeg 切片 -> gen_result_download
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恢复扫描本身只走 gen_recovery，避免堵住业务 worker。
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"""
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return await _run_with_execution_lock(
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lock_key=settings.CELERY_RECOVERY_STARTUP_TASK_LOCK_KEY,
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log_context="startup_recovery_once",
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runner=_run_startup_recovery_steps,
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)
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async def _run_startup_recovery_steps() -> Dict[str, Any]:
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results: Dict[str, Any] = {}
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steps: list[tuple[str, str, str, RecoveryRunner]] = [
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(
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"module_async",
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settings.MODULE_ASYNC_RECOVERY_LOCK_KEY,
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"module_async_recovery",
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_run_module_async_once,
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),
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(
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"shot_split",
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settings.SHOT_SPLIT_RECOVERY_LOCK_KEY,
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"shot_split_recovery",
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_run_shot_split_once,
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),
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(
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"generation",
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settings.GENERATION_RECOVERY_LOCK_KEY,
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"generation_recovery",
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_run_generation_once,
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),
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(
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"download",
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settings.DOWNLOAD_RECOVERY_LOCK_KEY,
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"download_recovery",
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_run_download_once,
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),
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]
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for name, lock_key, log_context, runner in steps:
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try:
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results[name] = await _run_with_execution_lock(
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lock_key=lock_key,
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log_context=log_context,
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runner=runner,
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)
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except Exception as exc:
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logger.exception("启动容灾步骤执行失败。step=%s", name)
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results[name] = {"error": str(exc)}
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return {"steps": results}
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if celery_app:
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@celery_app.task(
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name="recovery.startup_recovery_once",
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bind=True,
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soft_time_limit=settings.CELERY_RECOVERY_SOFT_TIME_LIMIT_SECONDS,
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time_limit=settings.CELERY_RECOVERY_TIME_LIMIT_SECONDS,
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)
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def startup_recovery_once(self) -> Dict[str, Any]:
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return run_async(_run_startup_recovery_once())
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@celery_app.task(
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name="generation.recover_download_tasks_once",
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bind=True,
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soft_time_limit=settings.CELERY_RECOVERY_SOFT_TIME_LIMIT_SECONDS,
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time_limit=settings.CELERY_RECOVERY_TIME_LIMIT_SECONDS,
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)
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def recover_download_tasks_once(self) -> Dict[str, Any]:
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acquired, reason = run_async(_acquire_download_recovery_loop_lock())
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if not acquired:
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return {"skipped": reason}
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try:
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result = run_async(
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_run_with_execution_lock(
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lock_key=settings.DOWNLOAD_RECOVERY_LOCK_KEY,
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log_context="download_recovery",
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runner=_run_download_once,
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)
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)
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result["loop_lock"] = reason
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return result
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finally:
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_schedule_next_download_recovery_loop()
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@celery_app.task(
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name="generation.recover_generation_tasks_once",
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bind=True,
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soft_time_limit=settings.CELERY_RECOVERY_SOFT_TIME_LIMIT_SECONDS,
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time_limit=settings.CELERY_RECOVERY_TIME_LIMIT_SECONDS,
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)
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def recover_generation_tasks_once(self) -> Dict[str, Any]:
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return run_async(
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_run_with_execution_lock(
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lock_key=settings.GENERATION_RECOVERY_LOCK_KEY,
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log_context="generation_recovery",
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runner=_run_generation_once,
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)
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)
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else:
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class _DisabledTask:
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def delay(self, *args: Any, **kwargs: Any) -> None:
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raise RuntimeError("Celery is disabled")
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def apply_async(self, *args: Any, **kwargs: Any) -> None:
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raise RuntimeError("Celery is disabled")
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startup_recovery_once = _DisabledTask()
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recover_download_tasks_once = _DisabledTask()
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recover_generation_tasks_once = _DisabledTask()
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