282 lines
9.7 KiB
Python
282 lines
9.7 KiB
Python
# Celery-приложение и периодические задачи.
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import json
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import logging
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import os
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import time
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from celery import Celery
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from celery.signals import worker_process_init, worker_ready, setup_logging as celery_setup_logging
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from redis import Redis
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from ..core.config import settings
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from ..core.logs import setup_logging
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from .constants import (
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GLOBAL_DB_PROGRESS_TS_KEY,
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GLOBAL_PROGRESS_TS_KEY,
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MOBILEDE_RUNTIME_SEGMENTS_TASK,
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MOBILEDE_IMAGES_QUEUE,
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MOBILEDE_SYNC_QUEUE,
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MOBILEDE_SYNC_TASK_NAME,
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)
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logger = logging.getLogger("mobilede_scraper.worker.celery_app")
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STARTUP_SYNC_DISPATCH_KEY = "mobilede:state:startup_sync_dispatched"
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PROGRESS_KEY_PREFIX = "mobilede:state:task_progress:"
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MOBILEDE_SYNC_DETAIL_TASK = "mobilede.sync_detail"
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MOBILEDE_ENRICH_IMAGES_TASK = "mobilede.enrich_images_batch"
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STARTUP_SYNC_DISPATCH_TTL_SECONDS = 10 * 60
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STARTUP_PROGRESS_MAX_AGE_SECONDS = 180
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STARTUP_GLOBAL_PROGRESS_MAX_AGE_SECONDS = 300
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def _env_bool(name: str, default: bool) -> bool:
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raw = os.getenv(name, "true" if default else "false").strip().lower()
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return raw in {"1", "true", "yes", "on"}
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MOBILEDE_BEAT_SYNC_ENABLED = _env_bool("MOBILEDE_BEAT_SYNC_ENABLED", True)
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MOBILEDE_BEAT_ENRICH_ENABLED = _env_bool("MOBILEDE_BEAT_ENRICH_ENABLED", True)
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def _runtime_sync_kwargs() -> dict[str, bool | float]:
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return {
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"delay_seconds": float(os.getenv("MOBILEDE_REQUEST_DELAY_SECONDS", "0.7")),
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"use_cursor": _env_bool("MOBILEDE_CURSOR_ENABLED", True),
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"continuous": _env_bool("MOBILEDE_CONTINUOUS_SYNC_ENABLED", True),
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}
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def _runtime_sync_expires_seconds() -> float:
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return settings.celery.beat_sync_interval_minutes * 60.0
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def _runtime_enrich_interval_seconds() -> float:
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return max(60.0, float(os.getenv("MOBILEDE_ENRICH_INTERVAL_SECONDS", "900")))
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def _has_fresh_active_progress(
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redis_client: Redis,
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*,
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max_age_seconds: int = STARTUP_PROGRESS_MAX_AGE_SECONDS,
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) -> bool:
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now = int(time.time())
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try:
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for raw_key in redis_client.scan_iter(f"{PROGRESS_KEY_PREFIX}*"):
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payload = redis_client.get(raw_key)
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if not payload:
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continue
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try:
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progress = json.loads(payload)
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except (TypeError, ValueError):
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continue
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ts = int(progress.get("ts") or 0)
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stage = str(progress.get("stage") or "")
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if ts > 0 and now - ts <= max_age_seconds and stage not in {"segment_done", "sync_done", "failed"}:
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return True
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except Exception:
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logger.warning("Failed to inspect startup progress keys", exc_info=True)
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return False
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def _has_recent_global_progress(
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redis_client: Redis,
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*,
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max_age_seconds: int = STARTUP_GLOBAL_PROGRESS_MAX_AGE_SECONDS,
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) -> bool:
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now = int(time.time())
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try:
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progress_ts = int(redis_client.get(GLOBAL_PROGRESS_TS_KEY) or 0)
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db_progress_ts = int(redis_client.get(GLOBAL_DB_PROGRESS_TS_KEY) or 0)
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except Exception:
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logger.warning("Failed to inspect global startup progress keys", exc_info=True)
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return False
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freshest_ts = max(progress_ts, db_progress_ts)
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return freshest_ts > 0 and now - freshest_ts <= max_age_seconds
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def _has_live_startup_progress(redis_client: Redis, *, queue_len: int) -> bool:
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if _has_recent_global_progress(redis_client):
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return True
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if queue_len <= 0:
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return False
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return _has_fresh_active_progress(redis_client)
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def _claim_startup_dispatch(redis_client: Redis, *, reset_stale: bool) -> bool:
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if redis_client.set(STARTUP_SYNC_DISPATCH_KEY, "1", nx=True, ex=STARTUP_SYNC_DISPATCH_TTL_SECONDS):
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return True
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if not reset_stale:
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return False
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redis_client.delete(STARTUP_SYNC_DISPATCH_KEY)
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return bool(
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redis_client.set(
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STARTUP_SYNC_DISPATCH_KEY,
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"1",
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nx=True,
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ex=STARTUP_SYNC_DISPATCH_TTL_SECONDS,
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)
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)
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@celery_setup_logging.connect
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def _configure_logging(loglevel=None, **kwargs):
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# Пишем логи Celery в stderr.
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level = settings.log_level if settings.log_level else "INFO"
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setup_logging(level, None)
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@worker_process_init.connect
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def _on_worker_process_init(**kwargs):
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# Повторно настраиваем логирование после fork.
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level = settings.log_level if settings.log_level else "INFO"
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setup_logging(level, None)
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def _broker_url() -> str:
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return settings.celery.broker_url or settings.redis.url
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def _result_backend() -> str:
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return settings.celery.result_backend or settings.redis.url
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celery_app = Celery(
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"mobilede_scraper",
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broker=_broker_url(),
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backend=_result_backend(),
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)
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# Если hard limit слишком большой, сжимаем его до soft + 120.
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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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_max_hard = _soft + 120 if _soft else _hard
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if _hard > _max_hard:
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logger.info(
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"CELERY_TASK_TIME_LIMIT=%d too far from CELERY_TASK_SOFT_TIME_LIMIT=%d; "
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"clamping hard limit to %d",
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_hard, _soft, _max_hard,
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)
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_hard = _max_hard
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beat_schedule = {}
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if MOBILEDE_BEAT_SYNC_ENABLED:
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beat_schedule["periodic-mobilede-sync-search"] = {
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"task": MOBILEDE_RUNTIME_SEGMENTS_TASK,
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"schedule": _runtime_sync_expires_seconds(),
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"args": (),
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"kwargs": _runtime_sync_kwargs(),
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"options": {
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"queue": MOBILEDE_SYNC_QUEUE,
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"expires": _runtime_sync_expires_seconds(),
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},
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}
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if MOBILEDE_BEAT_ENRICH_ENABLED:
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beat_schedule["periodic-mobilede-enrich-images"] = {
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"task": MOBILEDE_ENRICH_IMAGES_TASK,
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"schedule": _runtime_enrich_interval_seconds(),
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"args": (),
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"kwargs": {},
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"options": {
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"queue": MOBILEDE_IMAGES_QUEUE,
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"expires": _runtime_enrich_interval_seconds(),
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},
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}
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celery_app.conf.update(
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task_serializer="json",
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accept_content=["json"],
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result_serializer="json",
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timezone="UTC",
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enable_utc=True,
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task_soft_time_limit=_soft,
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task_time_limit=_hard,
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task_acks_late=True,
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task_reject_on_worker_lost=True,
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task_track_started=True,
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worker_concurrency=settings.celery.worker_concurrency,
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worker_max_tasks_per_child=settings.celery.worker_max_tasks_per_child,
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worker_pool=settings.celery.worker_pool,
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worker_prefetch_multiplier=1,
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broker_connection_retry_on_startup=True,
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broker_transport_options={
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"visibility_timeout": settings.celery.broker_visibility_timeout,
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},
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result_expires=86400,
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worker_redirect_stdouts=False,
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worker_hijack_root_logger=False,
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beat_schedule=beat_schedule,
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task_routes={
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MOBILEDE_RUNTIME_SEGMENTS_TASK: {"queue": MOBILEDE_SYNC_QUEUE},
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MOBILEDE_SYNC_TASK_NAME: {"queue": MOBILEDE_SYNC_QUEUE},
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MOBILEDE_SYNC_DETAIL_TASK: {"queue": MOBILEDE_IMAGES_QUEUE},
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MOBILEDE_ENRICH_IMAGES_TASK: {"queue": MOBILEDE_IMAGES_QUEUE},
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"mobilede_scraper.worker.tasks.*": {"queue": MOBILEDE_SYNC_QUEUE},
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},
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)
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celery_app.autodiscover_tasks(["mobilede_scraper.worker"])
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@worker_ready.connect
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def _on_worker_ready(**kwargs):
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"""При старте worker отправляем первый canonical runtime sync, если очередь пуста."""
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if not _env_bool("MOBILEDE_STARTUP_SYNC_ENABLED", True):
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logger.info("Worker ready: startup sync dispatch disabled by MOBILEDE_STARTUP_SYNC_ENABLED")
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return
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should_dispatch = False
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redis_client = None
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try:
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redis_client = Redis.from_url(
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settings.redis.url,
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decode_responses=True,
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socket_connect_timeout=settings.redis.socket_connect_timeout_seconds,
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socket_timeout=settings.redis.socket_timeout_seconds,
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health_check_interval=settings.redis.health_check_interval_seconds,
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retry_on_timeout=True,
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)
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queue_len = int(redis_client.llen(MOBILEDE_SYNC_QUEUE) or 0)
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has_live_progress = _has_live_startup_progress(redis_client, queue_len=queue_len)
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if queue_len > 0 and has_live_progress:
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logger.info("Worker ready: MOBILEDE_sync queue already has %d task(s); skip startup dispatch", queue_len)
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return
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has_fresh_progress = _has_fresh_active_progress(redis_client)
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if queue_len > 0 and not has_live_progress:
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logger.warning(
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"Worker ready: MOBILEDE_sync queue has %d task(s), but no fresh progress is visible; forcing runtime sync dispatch",
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queue_len,
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)
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elif queue_len <= 0 and has_fresh_progress:
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logger.info("Worker ready: queue is empty but active progress is still visible; relying on startup dedupe")
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should_dispatch = _claim_startup_dispatch(
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redis_client,
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reset_stale=not has_live_progress,
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)
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if should_dispatch and not has_live_progress:
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logger.info("Worker ready: claimed startup dispatch after stale or missing dedupe state")
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except Exception:
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logger.warning("Worker ready startup sync dedupe check failed; skipping immediate dispatch", exc_info=True)
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return
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finally:
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if redis_client is not None:
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try:
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redis_client.close()
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except Exception:
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pass
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if not should_dispatch:
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logger.info("Worker ready immediate sync already dispatched recently; skipping duplicate enqueue")
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return
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logger.info("Worker ready - dispatching initial mobile.de sync_runtime_segments task")
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celery_app.send_task(
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MOBILEDE_RUNTIME_SEGMENTS_TASK,
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kwargs=_runtime_sync_kwargs(),
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queue=MOBILEDE_SYNC_QUEUE,
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expires=_runtime_sync_expires_seconds(),
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)
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