245 lines
7.9 KiB
Python
245 lines
7.9 KiB
Python
# Celery tasks для синхронизации автомобилей Encar.
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import logging
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from threading import Event, Thread
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import uuid
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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 ..core.runtime_config import load_runtime_config
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from ..encar import EncarScraper, EncarFilters, expand_allowed_brands
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from ..storage.db import PersistenceService
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logger = logging.getLogger("encar_scraper.worker.tasks")
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ENCAR_SYNC_LOCK_KEY = "encar:locks:sync_listing"
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_persistence: PersistenceService | None = None
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_redis: Redis | None = None
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def _sync_listing_lock_ttl_seconds() -> int:
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settings = Settings()
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return max(settings.celery.task_time_limit + 120, 300)
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def _get_persistence() -> PersistenceService:
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global _persistence
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if _persistence is None:
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_persistence = PersistenceService(Settings())
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return _persistence
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def _get_redis() -> Redis:
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global _redis
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if _redis is None:
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settings = Settings()
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_redis = Redis.from_url(
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settings.redis.url,
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decode_responses=True,
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socket_timeout=10,
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socket_connect_timeout=5,
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)
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return _redis
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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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return bool(redis_client.set(key, owner_token, nx=True, ex=ttl_seconds))
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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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_REFRESH_LOCK_SCRIPT = """
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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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_RELEASE_LOCK_SCRIPT = """
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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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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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script = redis_client.register_script(_REFRESH_LOCK_SCRIPT)
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refreshed = script(keys=[key], args=[owner_token, int(ttl_seconds)])
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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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script = redis_client.register_script(_RELEASE_LOCK_SCRIPT)
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script(keys=[key], args=[owner_token])
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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 _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="encar-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="encar_scraper.worker.tasks.encar_sync_listing_task",
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bind=True,
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max_retries=2,
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default_retry_delay=60,
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acks_late=True,
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)
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def encar_sync_listing_task(
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self,
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car_type: str = "all",
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manufacturer: str | None = None,
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year_from: int | None = None,
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year_to: int | None = None,
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price_max: int | None = None,
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lane: str = "encar",
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limit: int | None = None,
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):
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"""
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Полная синхронизация листинга Encar.
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Собирает ВСЕ авто, обновляет цены/данные, помечает проданные.
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"""
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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_ttl = _sync_listing_lock_ttl_seconds()
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lock_acquired = _acquire_lock(redis_client, ENCAR_SYNC_LOCK_KEY, owner_token, lock_ttl)
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if not lock_acquired:
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logger.info("encar_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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heartbeat_stop: Event | None = None
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heartbeat_thread: Thread | None = None
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try:
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heartbeat_stop, heartbeat_thread = _start_lock_heartbeat(
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redis_client,
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ENCAR_SYNC_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": "encar_sync_started", "task_id": task_id})
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# --- Загрузка runtime_config ---
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rc = load_runtime_config()
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effective_limit = limit or rc.sync.limit
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effective_lane = lane or rc.sync.lane or "encar"
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car_type_map = {"all": "A", "domestic": "Y", "import": "N"}
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filters = EncarFilters(
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car_type=car_type_map.get(car_type, "A"),
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manufacturer=manufacturer,
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year_from=year_from,
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year_to=year_to,
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price_to=price_max,
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)
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# Набор разрешённых брендов (lowercased) из runtime_config
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# Расширяем английские имена alias'ами (корейский + русский перевод)
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allowed_brands = expand_allowed_brands(
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set(rc.filters.brands) if rc.filters.brands else None
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)
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excluded_brands = expand_allowed_brands(
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set(rc.filters.exclude_brands) if rc.filters.exclude_brands else None
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)
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scraper = EncarScraper()
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result = scraper.sync_listing(
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limit=effective_limit,
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filters=filters,
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lane=effective_lane,
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redis_client=redis_client,
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allowed_brands=allowed_brands,
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excluded_brands=excluded_brands,
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probe_all_photos=rc.sync.probe_all_photos,
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)
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summary = {
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"task_id": task_id,
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"source": "encar",
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"total_available": result.get("total_available", 0),
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"items_collected": result.get("items_collected", 0),
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"cars_synced": result.get("cars_synced", 0),
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"cars_failed": result.get("cars_failed", 0),
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"cars_marked_sold": result.get("cars_marked_sold", 0),
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}
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logger.info(
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"encar_sync_listing_task completed: %d synced, %d failed, %d marked sold",
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summary["cars_synced"], summary["cars_failed"], summary["cars_marked_sold"],
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)
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return {"status": "success", **summary}
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except Exception as exc:
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logger.error("encar_sync_listing_task failed: %s", exc, exc_info=True)
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raise self.retry(exc=exc)
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finally:
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if heartbeat_stop is not None:
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heartbeat_stop.set()
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if heartbeat_thread is not None:
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heartbeat_thread.join(timeout=max(1.0, min(5.0, lock_ttl / 10)))
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if lock_acquired:
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_release_lock_if_owner(redis_client, ENCAR_SYNC_LOCK_KEY, owner_token)
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@shared_task(
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name="encar_scraper.worker.tasks.encar_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 encar_sync_vehicle_task(self, vehicle_url: str, lane: str = "encar"):
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"""Синхронизация одного авто Encar."""
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persistence = _get_persistence()
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persistence.create_tables()
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try:
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scraper = EncarScraper()
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result = scraper.sync_vehicle(vehicle_url, lane=lane)
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logger.info("encar_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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"origin_id": result.get("origin_id"),
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}
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except Exception as exc:
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logger.error("encar_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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