PingWatch 网络设备离线监控系统

- FastAPI 后端 + Vue 3 前端
- Docker Compose 一键部署
- Casdoor OAuth 认证集成
- LogHive 集中式日志
- 设备批量 CSV 导入/导出
- WebSocket 实时状态推送
- 企业微信告警通知
- fping 高性能并发 Ping 检测

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/app/services/cleanup.py

@@ -0,0 +1,38 @@
+"""数据清理服务"""
+import logging
+from datetime import datetime, timedelta
+
+from sqlalchemy import delete
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.config import settings
+from app.models.ping_record import PingRecord
+from app.models.alert_event import AlertEvent
+from app.core.deps import async_session
+
+logger = logging.getLogger("pingwatch.cleanup")
+
+
+async def cleanup_old_data():
+    """清理超过保留期限的旧数据"""
+    now = datetime.now()
+
+    # 清理 ping_records
+    ping_cutoff = now - timedelta(days=settings.PING_RECORD_RETENTION_DAYS)
+    async with async_session() as db:
+        result = await db.execute(
+            delete(PingRecord).where(PingRecord.created_at < ping_cutoff)
+        )
+        await db.commit()
+        if result.rowcount > 0:
+            logger.info(f"清理 ping_records: {result.rowcount} 条")
+
+    # 清理 alert_events
+    alert_cutoff = now - timedelta(days=settings.ALERT_RETENTION_DAYS)
+    async with async_session() as db:
+        result = await db.execute(
+            delete(AlertEvent).where(AlertEvent.created_at < alert_cutoff)
+        )
+        await db.commit()
+        if result.rowcount > 0:
+            logger.info(f"清理 alert_events: {result.rowcount} 条")