540 lines
19 KiB
Python
540 lines
19 KiB
Python
# Задачи Celery для синхронизации автомобилей и листинга IAAI.
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from concurrent.futures import ThreadPoolExecutor
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import json
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import logging
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from threading import Event, Thread
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import time
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import uuid
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from billiard.exceptions import SoftTimeLimitExceeded
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from celery import shared_task
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from redis import Redis
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from ..core.config import Settings
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from ..scraper import IAAIScraper
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from ..storage.db import PersistenceService
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logger = logging.getLogger("iaai_scraper.worker.tasks")
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SYNC_LISTING_LOCK_KEY = "iaai:locks:sync_listing"
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SYNC_FULL_SCAN_DONE_KEY = "iaai:state:sync_full_scan_done"
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SYNC_LISTING_CHECKPOINT_KEY = "iaai:state:sync_listing_checkpoint"
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SYNC_LISTING_TASK_NAME = "iaai_scraper.worker.tasks.sync_listing_task"
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def _retry_with_backoff(func, *, attempts: int = 5, base_delay_s: float = 1.0):
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last_exc: Exception | None = None
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for attempt in range(1, attempts + 1):
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try:
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return func()
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except Exception as exc:
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last_exc = exc
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if attempt >= attempts:
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break
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delay = base_delay_s * (2 ** (attempt - 1))
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logger.warning(
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"Operation failed (attempt %d/%d): %s. Retrying in %.1fs",
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attempt,
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attempts,
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exc,
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delay,
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)
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time.sleep(delay)
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if last_exc is not None:
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raise last_exc
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def _run_browser_job(func, *args, **kwargs):
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# Браузерный код запускаем в отдельном потоке без активного loop.
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# НЕ используем `with` — иначе shutdown(wait=True) заблокирует main thread
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# если SoftTimeLimitExceeded прервёт future.result(), а browser thread ещё работает.
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settings = Settings()
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soft = settings.celery.task_soft_time_limit
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hard = settings.celery.task_time_limit
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# Таймаут для future.result(): берём hard limit (или soft + 120), чтобы не висеть вечно.
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wait_timeout = min(hard, soft + 120) if soft and hard else None
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executor = ThreadPoolExecutor(max_workers=1, thread_name_prefix="iaai-browser")
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future = executor.submit(func, *args, **kwargs)
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try:
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result = future.result(timeout=wait_timeout)
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except SoftTimeLimitExceeded:
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# Отпускаем executor без ожидания — thread умрёт когда Celery убьёт процесс (hard limit).
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future.cancel()
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executor.shutdown(wait=False, cancel_futures=True)
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raise
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except TimeoutError:
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# future.result(timeout=...) вышел по таймауту — browser thread завис.
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future.cancel()
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executor.shutdown(wait=False, cancel_futures=True)
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raise SoftTimeLimitExceeded("Browser thread did not finish within time limit")
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except Exception:
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executor.shutdown(wait=False, cancel_futures=True)
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raise
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else:
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executor.shutdown(wait=True)
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return result
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def _sync_listing_lock_ttl_seconds() -> int:
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settings = Settings()
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soft = settings.celery.task_soft_time_limit
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hard = settings.celery.task_time_limit
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# Используем clamped hard limit (soft + 120), а не сырой task_time_limit,
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# чтобы lock не висел 11 дней при CELERY_TASK_TIME_LIMIT=999999.
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effective_hard = min(hard, soft + 120) if soft else hard
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return max(effective_hard + 120, 300)
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def _get_persistence() -> PersistenceService:
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settings = Settings()
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persistence = PersistenceService(settings)
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def _ping_db() -> None:
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with persistence.engine.connect() as conn:
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conn.exec_driver_sql("SELECT 1")
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_retry_with_backoff(_ping_db, attempts=5, base_delay_s=1.0)
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return persistence
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def _get_redis() -> Redis:
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settings = Settings()
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redis_client = Redis.from_url(settings.redis.url, decode_responses=True)
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def _ping_redis() -> None:
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redis_client.ping()
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_retry_with_backoff(_ping_redis, attempts=5, base_delay_s=1.0)
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return redis_client
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def _acquire_lock(redis_client: Redis, key: str, owner_token: str, ttl_seconds: int) -> bool:
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try:
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acquired = bool(redis_client.set(key, owner_token, nx=True, ex=ttl_seconds))
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if acquired:
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return True
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# Автовосстановление: если lock завис без TTL, считаем stale и пересоздаём.
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ttl = redis_client.ttl(key)
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if ttl is not None and ttl < 0:
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logger.warning("Detected stale lock without TTL, removing: %s", key)
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redis_client.delete(key)
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return bool(redis_client.set(key, owner_token, nx=True, ex=ttl_seconds))
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return False
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except Exception as exc:
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logger.warning("Failed to acquire lock %s", key, exc_info=True)
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return False
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def _refresh_lock_if_owner(redis_client: Redis, key: str, owner_token: str, ttl_seconds: int) -> bool | None:
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try:
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refreshed = redis_client.eval(
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"""
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if redis.call('GET', KEYS[1]) == ARGV[1] then
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return redis.call('EXPIRE', KEYS[1], tonumber(ARGV[2]))
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end
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return 0
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""",
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1,
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key,
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owner_token,
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int(ttl_seconds),
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)
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return bool(refreshed)
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except Exception as exc:
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logger.warning("Failed to refresh lock %s", key, exc_info=True)
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return None
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def _release_lock_if_owner(redis_client: Redis, key: str, owner_token: str) -> None:
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try:
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redis_client.eval(
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"""
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if redis.call('GET', KEYS[1]) == ARGV[1] then
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return redis.call('DEL', KEYS[1])
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end
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return 0
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""",
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1,
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key,
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owner_token,
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)
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except Exception as exc:
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logger.warning("Failed to release lock %s", key, exc_info=True)
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def _has_running_sync_listing_tasks(celery_app) -> bool:
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try:
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inspector = celery_app.control.inspect(timeout=1.0)
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snapshots = [
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inspector.active() or {},
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inspector.reserved() or {},
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inspector.scheduled() or {},
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]
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except Exception:
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logger.warning("Failed to inspect Celery workers for running sync tasks", exc_info=True)
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return True
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for snapshot in snapshots:
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for entries in snapshot.values():
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for entry in entries or []:
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task_name = str(entry.get("name") or entry.get("request", {}).get("name") or "")
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if task_name == SYNC_LISTING_TASK_NAME:
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return True
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return False
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def _clear_orphan_sync_listing_lock(redis_client: Redis, celery_app) -> bool:
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try:
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owner_token = redis_client.get(SYNC_LISTING_LOCK_KEY)
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if not owner_token:
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return False
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except Exception:
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logger.warning("Failed to read sync listing lock before cleanup", exc_info=True)
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return False
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if _has_running_sync_listing_tasks(celery_app):
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logger.info("sync_listing lock preserved: active task still detected")
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return False
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try:
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ttl = redis_client.ttl(SYNC_LISTING_LOCK_KEY)
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redis_client.delete(SYNC_LISTING_LOCK_KEY)
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logger.warning(
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"Removed orphan sync_listing lock owner=%s ttl=%s after worker restart",
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owner_token,
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ttl,
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)
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return True
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except Exception:
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logger.warning("Failed to clear orphan sync listing lock", exc_info=True)
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return False
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def _is_full_scan_done(redis_client: Redis) -> bool:
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try:
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value = redis_client.get(SYNC_FULL_SCAN_DONE_KEY)
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except Exception:
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logger.warning("Failed to read full scan state", exc_info=True)
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return False
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return str(value or "").strip() == "1"
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def _set_full_scan_done(redis_client: Redis, done: bool) -> None:
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try:
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redis_client.set(SYNC_FULL_SCAN_DONE_KEY, "1" if done else "0")
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except Exception:
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logger.warning("Failed to persist full scan state", exc_info=True)
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def _load_sync_checkpoint(redis_client: Redis) -> dict[str, object] | None:
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try:
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raw = redis_client.get(SYNC_LISTING_CHECKPOINT_KEY)
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except Exception:
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logger.warning("Failed to read sync listing checkpoint", exc_info=True)
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return None
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if not raw:
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return None
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if isinstance(raw, str) and not raw.strip():
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return None
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try:
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data = json.loads(str(raw))
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except Exception:
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logger.warning("Failed to decode sync listing checkpoint", exc_info=True)
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return None
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return data if isinstance(data, dict) else None
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def _save_sync_checkpoint(
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redis_client: Redis,
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*,
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task_id: str,
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page_number: int,
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make: str | None,
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model: str | None,
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lane: str,
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) -> None:
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payload = {
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"status": "in_progress",
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"task_id": task_id,
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"last_successful_page": int(page_number),
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"make": make,
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"model": model,
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"lane": lane,
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"updated_at": int(time.time()),
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}
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try:
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redis_client.set(SYNC_LISTING_CHECKPOINT_KEY, json.dumps(payload))
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except Exception:
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logger.warning("Failed to save sync listing checkpoint", exc_info=True)
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def _clear_sync_checkpoint(redis_client: Redis) -> None:
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try:
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redis_client.delete(SYNC_LISTING_CHECKPOINT_KEY)
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except Exception:
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logger.warning("Failed to clear sync listing checkpoint", exc_info=True)
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def _start_lock_heartbeat(
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redis_client: Redis,
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key: str,
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owner_token: str,
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ttl_seconds: int,
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) -> tuple[Event, Thread]:
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stop_event = Event()
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interval_seconds = max(5.0, min(30.0, ttl_seconds / 3))
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def _heartbeat() -> None:
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while not stop_event.wait(interval_seconds):
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refreshed = _refresh_lock_if_owner(redis_client, key, owner_token, ttl_seconds)
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if refreshed is False:
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logger.warning("Lost sync_listing lock ownership for %s", owner_token)
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return
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thread = Thread(target=_heartbeat, name="sync-listing-lock-heartbeat", daemon=True)
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thread.start()
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return stop_event, thread
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@shared_task(
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name="iaai_scraper.worker.tasks.sync_vehicle_task",
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bind=True,
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max_retries=2,
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default_retry_delay=30,
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acks_late=True,
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)
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def sync_vehicle_task(self, vehicle_url: str, lane: str = "iaai"):
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# Скрапинг и upsert одного автомобиля.
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persistence = _get_persistence()
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persistence.create_tables()
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try:
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def _job():
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with IAAIScraper() as scraper:
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return scraper.sync_vehicle(vehicle_url, lane=lane)
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result = _run_browser_job(_job)
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logger.info("sync_vehicle_task completed: %s", vehicle_url)
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return {
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"status": "success",
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"vehicle_url": vehicle_url,
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"db_action": result.get("db_action"),
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"images_upserted": result.get("images_upserted", 0),
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}
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except Exception as exc:
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logger.error("sync_vehicle_task failed: %s — %s", vehicle_url, exc, exc_info=True)
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raise self.retry(exc=exc)
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@shared_task(
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name="iaai_scraper.worker.tasks.sync_listing_task",
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bind=True,
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max_retries=3,
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default_retry_delay=120,
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acks_late=True,
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)
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def sync_listing_task(
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self,
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make: str | None = None,
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model: str | None = None,
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lane: str = "iaai_cars",
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limit: int | None = None,
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only_new: bool | None = None,
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):
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# Полный цикл: листинг + sync всех найденных машин.
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persistence = _get_persistence()
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persistence.create_tables()
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task_id = self.request.id or "unknown"
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owner_token = f"{task_id}:{uuid.uuid4().hex}"
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redis_client = _get_redis()
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lock_acquired = False
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lock_ttl = _sync_listing_lock_ttl_seconds()
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heartbeat_stop: Event | None = None
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heartbeat_thread: Thread | None = None
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force_bootstrap_full_scan = False
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def _enqueue_bootstrap_followup(reason: str, delay_seconds: int = 5) -> None:
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try:
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self.app.send_task(
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"iaai_scraper.worker.tasks.sync_listing_task",
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kwargs={
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"make": make,
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"model": model,
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"lane": lane,
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"limit": limit,
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"only_new": only_new,
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},
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queue="scraping",
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countdown=max(0, int(delay_seconds)),
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)
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logger.info(
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"Bootstrap follow-up sync queued in %ss (reason=%s)",
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delay_seconds,
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reason,
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)
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except Exception:
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logger.warning("Failed to enqueue bootstrap follow-up sync", exc_info=True)
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lock_acquired = _acquire_lock(redis_client, SYNC_LISTING_LOCK_KEY, owner_token, lock_ttl)
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if not lock_acquired:
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orphan_cleared = _clear_orphan_sync_listing_lock(redis_client, self.app)
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if orphan_cleared:
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lock_acquired = _acquire_lock(redis_client, SYNC_LISTING_LOCK_KEY, owner_token, lock_ttl)
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if not lock_acquired:
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logger.info("sync_listing_task skipped: another sync is already running")
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return {
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"status": "skipped",
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"reason": "sync_already_running",
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"task_id": task_id,
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}
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try:
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full_scan_done_before_run = _is_full_scan_done(redis_client)
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force_bootstrap_full_scan = not full_scan_done_before_run
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effective_limit = None if force_bootstrap_full_scan else limit
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effective_only_new = False if force_bootstrap_full_scan else only_new
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checkpoint = _load_sync_checkpoint(redis_client)
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resume_from_page = 1
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if checkpoint and str(checkpoint.get("status") or "") == "in_progress":
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checkpoint_page = int(checkpoint.get("last_successful_page") or 0)
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checkpoint_make = checkpoint.get("make")
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checkpoint_model = checkpoint.get("model")
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checkpoint_lane = checkpoint.get("lane")
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same_scope = (
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checkpoint_make == make
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and checkpoint_model == model
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and checkpoint_lane == lane
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)
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if checkpoint_page > 0 and same_scope:
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resume_from_page = checkpoint_page + 1
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logger.warning(
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"Resuming sync_listing from page %d using checkpoint",
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resume_from_page,
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)
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elif checkpoint_page > 0:
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logger.info("Ignoring stale checkpoint due to different sync parameters")
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_clear_sync_checkpoint(redis_client)
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if force_bootstrap_full_scan:
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logger.info(
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"Bootstrap mode: forcing full scan (only_new=False, limit=None) until first complete run",
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)
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logger.info(
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"sync_listing options: only_new=%s, limit=%s",
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effective_only_new,
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effective_limit,
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)
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heartbeat_stop, heartbeat_thread = _start_lock_heartbeat(
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redis_client,
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SYNC_LISTING_LOCK_KEY,
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owner_token,
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lock_ttl,
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)
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self.update_state(state="STARTED", meta={"stage": "sync_listing_started", "task_id": task_id})
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def _job():
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with IAAIScraper() as scraper:
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return scraper.sync_listing(
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make=make,
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model=model,
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lane=lane,
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limit=effective_limit,
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only_new=effective_only_new,
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start_page=resume_from_page,
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progress_callback=lambda page_number: _save_sync_checkpoint(
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redis_client,
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task_id=task_id,
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page_number=page_number,
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make=make,
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model=model,
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lane=lane,
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),
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)
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result = _run_browser_job(_job)
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if force_bootstrap_full_scan:
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bootstrap_completed = bool(result.get("full_scan_completed"))
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if bootstrap_completed:
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_set_full_scan_done(redis_client, True)
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_clear_sync_checkpoint(redis_client)
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logger.info("Bootstrap full scan completed; hourly schedule continues")
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else:
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_set_full_scan_done(redis_client, False)
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logger.info("Bootstrap full scan not complete yet; queuing immediate continuation")
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_enqueue_bootstrap_followup("bootstrap_not_completed")
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elif result.get("status") == "success":
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_clear_sync_checkpoint(redis_client)
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summary = {
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"task_id": task_id,
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"run_id": result.get("run_id"),
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"status": result.get("status", "success"),
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"cars_upserted": result.get("cars_upserted", 0),
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"cars_failed": result.get("cars_failed", 0),
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"images_upserted": result.get("images_upserted", 0),
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"skipped_existing": result.get("skipped_existing", 0),
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"elapsed_seconds": result.get("elapsed_seconds"),
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"failures_count": len(result.get("failures") or []),
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}
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logger.info(
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"sync_listing_task completed: status=%s, %d upserted, %d failed, failures=%d",
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summary["status"],
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summary["cars_upserted"],
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summary["cars_failed"],
|
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summary["failures_count"],
|
||
)
|
||
return summary
|
||
|
||
except SoftTimeLimitExceeded:
|
||
logger.warning(
|
||
"sync_listing_task soft timeout exceeded — partial progress already saved to DB"
|
||
)
|
||
if force_bootstrap_full_scan:
|
||
_set_full_scan_done(redis_client, False)
|
||
_enqueue_bootstrap_followup("soft_time_limit_exceeded")
|
||
# Partial progress уже записан в БД через finish_sync_run.
|
||
# Не retry — следующий запуск продолжит обработку по расписанию.
|
||
return {
|
||
"status": "timed_out",
|
||
"task_id": task_id,
|
||
"reason": "soft_time_limit_exceeded",
|
||
"note": "partial progress saved to DB; bootstrap continuation queued",
|
||
}
|
||
|
||
except Exception as exc:
|
||
logger.error("sync_listing_task failed: %s", exc, exc_info=True)
|
||
# Retry только на не-таймаутные ошибки (сеть, БД, браузер).
|
||
try:
|
||
if force_bootstrap_full_scan:
|
||
_set_full_scan_done(redis_client, False)
|
||
raise self.retry(exc=exc, countdown=5)
|
||
raise self.retry(exc=exc)
|
||
except self.MaxRetriesExceededError:
|
||
logger.error("sync_listing_task max retries exceeded, giving up")
|
||
if force_bootstrap_full_scan:
|
||
_set_full_scan_done(redis_client, False)
|
||
_enqueue_bootstrap_followup("max_retries_exceeded")
|
||
return {
|
||
"status": "failed",
|
||
"task_id": task_id,
|
||
"error": str(exc),
|
||
}
|
||
finally:
|
||
if heartbeat_stop is not None:
|
||
heartbeat_stop.set()
|
||
if heartbeat_thread is not None:
|
||
heartbeat_thread.join(timeout=max(1.0, min(5.0, lock_ttl / 10)))
|
||
if lock_acquired:
|
||
_release_lock_if_owner(redis_client, SYNC_LISTING_LOCK_KEY, owner_token)
|