58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
"""AI Steward 上下文缓存服务（Redis）与失效钩子。"""
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from __future__ import annotations
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import json
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import os
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import re
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from datetime import datetime, timezone
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from pathlib import Path
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from typing import Any, Optional
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from sqlalchemy import and_, case, event, func, inspect, or_, select
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy.orm import Session
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from ...models import Project, ProjectSignalLink, Signal, Task, User, UserProject, UserWorkload
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from ...utils.timezone import now_cn_aware
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try:
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import redis.asyncio as redis_async
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from redis import Redis as RedisSync
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REDIS_AVAILABLE = True
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except Exception: # pragma: no cover
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REDIS_AVAILABLE = False
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redis_async = None
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RedisSync = None
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SYSTEM_SNAPSHOT_SCHEMA_VERSION = "2026-04-07.context-v2"
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SYSTEM_TTL_SECONDS = 30 * 60
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USER_TTL_SECONDS = 5 * 60
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SESSION_TTL_SECONDS = 60 * 60
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PROJECT_LIST_TTL_SECONDS = 10 * 60
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SIGNAL_PENDING_TTL_SECONDS = 5 * 60
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SESSION_MAX_MESSAGES = 20
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DONE_TASK_STATUSES = {"done", "completed", "closed", "resolved", "archived"}
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PENDING_SIGNAL_STATUSES = {"pending", "todo", "open", "待处理"}
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def _safe_int(value: Any, fallback: int = 0) -> int:
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try:
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return int(value)
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except Exception:
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return fallback
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def _json_loads(raw: Optional[str], default: Any) -> Any:
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if not raw:
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return default
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try:
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return json.loads(raw)
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except Exception:
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return default
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__all__ = [name for name in globals() if not name.startswith("__")]
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