浅念
91 lines
3.5 KiB
Python
91 lines
3.5 KiB
Python
from contextlib import asynccontextmanager
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from pathlib import Path
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import logging
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from fastapi import FastAPI
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from fastapi.staticfiles import StaticFiles
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from app.engine.config import STATIC_DIR
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from app.platform.host_middleware import TenantHostMiddleware
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from app.platform.registry import TenantRegistry
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logger = logging.getLogger(__name__)
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# 路径锚定(不随 CWD 漂移):seed_profiles 与 tenants 都在仓库根
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BASE_DIR = Path(__file__).resolve().parents[1]
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SEED_DIR = BASE_DIR / "seed_profiles"
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TENANTS_DIR = BASE_DIR / "tenants" # .gitignore 已忽略 tenants/*.db
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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# 测试注入缝:conftest 预置过 app.state.registry(临时 data_dir 的独立
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# Registry)则沿用,不再加载仓库 seed——测试租户库与生产互不污染
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registry = getattr(app.state, "registry", None)
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if registry is None:
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registry = TenantRegistry.load_from_dir(SEED_DIR, data_dir=TENANTS_DIR)
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app.state.registry = registry
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try:
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# 询盘推送(设计 8.2): 清扫崩溃遗留的 stale pending → failed。逐租户、
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# 用该租户自己的 session_factory;db 文件不存在的租户跳过——全新库
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# 无遗留行,保持 engine 懒建纪律(租户 engine 由 Host 中间件按请求
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# 懒建,启动期只有已有库文件的租户会被扫描)。
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# 清扫失败只记日志继续:一个租户的坏库不炸整个平台启动(其余租户
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# 照常服务),该租户下轮重启还会重扫。
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from app.engine.services.lead_push_service import sweep_stale_pending
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for rt in registry.runtimes():
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if rt.config.status != "active" or not rt.db_path.exists():
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continue
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try:
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ready = await registry.ensure_ready(rt)
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await sweep_stale_pending(session_factory=ready.session_factory)
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except Exception:
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logger.exception(
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"启动清扫失败,跳过该租户(slug=%s, db=%s)",
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rt.config.slug, rt.db_path)
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yield
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finally:
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# 幂等于"更少的引擎":启动半途失败也把已建好的 engine 关掉
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# (Windows 文件锁: 不关则库文件删不掉)
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await registry.dispose_all()
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app = FastAPI(title="HESUPIPE AI 客服", lifespan=lifespan)
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from app.engine.routes.chat import router as chat_router
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from app.engine.routes.chat_rest import router as chat_rest_router
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app.include_router(chat_router)
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app.include_router(chat_rest_router)
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app.mount("/static", StaticFiles(directory=str(STATIC_DIR)), name="static")
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@app.middleware("http")
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async def static_no_cache(request, call_next):
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"""静态资源协商缓存(2026-09-30 线上事件): 无 Cache-Control 时浏览器对
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widget.js 走启发式缓存,修复部署后用户端仍跑旧脚本。no-cache=每次用
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etag 轻量协商,有更新即时生效,未变则 304 几乎零开销。"""
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resp = await call_next(request)
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if request.url.path.startswith("/static/"):
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resp.headers["Cache-Control"] = "no-cache"
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return resp
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# 租户路由中间件(Task 7): 最后 add = 最外层——租户解析先于一切用户中间件。
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# 纯 ASGI 类(http+websocket 双覆盖),registry 经 scope["app"] 延迟取,
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# 因此可在 lifespan 挂 Registry 之前于模块级注册。
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app.add_middleware(TenantHostMiddleware)
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@app.get("/")
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async def index():
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from fastapi.responses import FileResponse
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return FileResponse(str(STATIC_DIR / "chat.html"))
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@app.get("/health")
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async def health():
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return {"status": "ok"}
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