Steven
0c53aa7062
- backend: FastAPI 应用工厂、统一错误信封、JWT、短信登录、工作区/成员/邀请、幂等中间件 - alembic 0001: workspace/member/invitation/audit_log/app_user + RLS 策略 + 双角色 GRANT - tests: 认证/工作区/租户隔离/幂等 四组用例（尚未在本机执行） - web: React18+Vite 骨架（登录、工作区、邀请落地页） - android: Compose 骨架（登录、工作区列表） - 2.Design: PRODUCT-PLAN / ROADMAP-M0-M1 / NAMING / DEVELOPMENT
133 lines
4.3 KiB
Python
133 lines
4.3 KiB
Python
"""FastAPI 入口。"""
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from __future__ import annotations
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import logging
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from contextlib import asynccontextmanager
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from typing import Any
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from fastapi import FastAPI, Request
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from fastapi.exceptions import RequestValidationError
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.responses import JSONResponse
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from sqlalchemy import text
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from starlette.exceptions import HTTPException as StarletteHTTPException
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from .api import auth, workspaces
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from .config import get_settings
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from .db import SessionFactory, current_app_role, engine
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from .errors import AppError, ErrorCode, http_status_for
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from .logging_setup import get_logger, request_id_ctx, setup_logging
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from .middleware import IdempotencyMiddleware, RequestContextMiddleware, error_body
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settings = get_settings()
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setup_logging("DEBUG" if settings.env == "dev" else "INFO")
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logger = get_logger("app")
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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settings.validate_runtime()
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logger.info("服务启动", extra={"extra_fields": {"env": settings.env, "commit": settings.build_commit}})
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yield
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await engine.dispose()
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app = FastAPI(
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title=f"{settings.app_name} API",
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version="0.1.0",
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description="达道Task —— 任务 / 工单 / 知识库，一条流。",
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lifespan=lifespan,
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docs_url="/docs" if settings.env != "prod" else None,
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redoc_url=None,
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)
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app.add_middleware(
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CORSMiddleware,
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allow_origins=settings.cors_origins,
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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expose_headers=["X-Request-Id", "X-Idempotent-Replay"],
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)
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# 后加的中间件先执行：RequestContext 必须最外层
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app.add_middleware(IdempotencyMiddleware)
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app.add_middleware(RequestContextMiddleware)
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# ── 异常处理：对外永远是 {code, message, data, request_id} ──
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@app.exception_handler(AppError)
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async def handle_app_error(request: Request, exc: AppError) -> JSONResponse:
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return JSONResponse(
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status_code=exc.http_status,
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content=error_body(request_id_ctx.get(), exc.code, exc.message, exc.details),
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)
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@app.exception_handler(RequestValidationError)
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async def handle_validation(request: Request, exc: RequestValidationError) -> JSONResponse:
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details: list[dict[str, Any]] = [
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{"field": ".".join(str(p) for p in err["loc"][1:]), "msg": err["msg"]}
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for err in exc.errors()
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]
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return JSONResponse(
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status_code=422,
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content=error_body(
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request_id_ctx.get(), ErrorCode.VALIDATION_FAILED, "参数校验失败", details
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),
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)
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@app.exception_handler(StarletteHTTPException)
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async def handle_http(request: Request, exc: StarletteHTTPException) -> JSONResponse:
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code = ErrorCode.NOT_FOUND if exc.status_code == 404 else ErrorCode.BAD_REQUEST
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return JSONResponse(
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status_code=exc.status_code,
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content=error_body(request_id_ctx.get(), code, str(exc.detail)),
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)
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@app.exception_handler(Exception)
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async def handle_unexpected(request: Request, exc: Exception) -> JSONResponse:
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logger.exception("未处理异常")
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return JSONResponse(
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status_code=http_status_for(ErrorCode.INTERNAL),
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content=error_body(request_id_ctx.get(), ErrorCode.INTERNAL, "服务器内部错误"),
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)
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app.include_router(auth.router, prefix=settings.api_prefix)
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app.include_router(workspaces.router, prefix=settings.api_prefix)
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@app.get("/health", tags=["运维"], summary="存活探针")
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async def health() -> dict:
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db_ok = True
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try:
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async with SessionFactory() as session:
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await session.execute(text("SELECT 1"))
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except Exception: # noqa: BLE001
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logger.exception("数据库探活失败")
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db_ok = False
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return {"status": "ok" if db_ok else "degraded", "db": db_ok, "env": settings.env}
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@app.get("/version", tags=["运维"], summary="构建标记")
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async def version() -> dict:
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"""部署后必须校验：commit 必须等于 git rev-parse --short HEAD。"""
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role = None
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try:
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async with SessionFactory() as session:
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role = await current_app_role(session)
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except Exception: # noqa: BLE001
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logger.warning("读取数据库角色失败")
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return {
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"app": settings.app_name,
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"env": settings.env,
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"commit": settings.build_commit,
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"build_time": settings.build_time,
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"api_prefix": settings.api_prefix,
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"db_role": role,
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}
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