42 lines
1.0 KiB
Python
42 lines
1.0 KiB
Python
from __future__ import annotations
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from datetime import datetime, timezone
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import redis
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from celery import shared_task
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from app.core.config import get_settings
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def _env_prefix(app_env: str) -> str:
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"""
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根据环境生成前缀：
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- dev -> dev
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- prod -> pro
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"""
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return "dev" if str(app_env) == "dev" else "pro"
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@shared_task(name="tasks.ops.beat_heartbeat")
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def beat_heartbeat() -> dict[str, str]:
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"""
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Beat 心跳任务（用于健康检查）。
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作用：
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- 由 Celery Beat 每分钟触发一次
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- 写入 Redis 心跳 key，并设置 TTL
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- API 侧读取该 key，可判断 beat 是否在运行
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"""
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settings = get_settings()
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prefix = _env_prefix(settings.app_env)
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key = f"{prefix}:beat:heartbeat"
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now = datetime.now(timezone.utc).isoformat()
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r = redis.Redis.from_url(settings.celery_broker_url, decode_responses=True)
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# TTL 设短一些：一旦 beat 挂了，很快就能从“过期/缺失”判断出来
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r.set(key, now, ex=180)
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return {"status": "ok", "key": key, "at": now}
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