Archived
snowy-yang
f588d313f0
- web/routers/tasks.py：topen、queue、batch_progress、task/cancel、 task/heartbeat、task/list 迁至 /api/v1/* - 读写 core.state 共享任务表/统计（与 Flask 同一批对象）——两栈迁移期看到同一份 任务状态，这是单进程双框架成立的关键 - task/cancel 保持 POST-only（与 Flask 同口径，杜绝顶层导航 GET 触发取消） 契约奇偶校验：24 项全 OK（新增 queue/topen/task:list/heartbeat/progress404）； 验证：pytest 46/46；ruff All checks passed；pyright 0 errors；冒烟 10/10。
94 lines
3.3 KiB
Python
94 lines
3.3 KiB
Python
# -*- coding: utf-8 -*-
|
||
"""FastAPI 应用工厂。
|
||
|
||
设计（strangler 迁移）：
|
||
- 已迁移的路由挂在 `/api/v1` 前缀下，与遗留 Flask 的同名路由（根路径）并存，
|
||
便于逐端点比对响应契约（.zcode/refactor/parity.py）。
|
||
- `serve_flask_fallback=True` 时，把未迁移的遗留 Flask 应用整体挂到根路径兜底，
|
||
实现「新端点走 FastAPI、其余走 Flask」的单进程双框架运行；迁移完成后删掉该开关。
|
||
|
||
注意（默认关闭的原因）：Flask fallback 会在 FastAPI 进程内 import main，
|
||
进而初始化 MusicAPIService / 打开 SQLite —— 与生产既有的 waitress 进程是
|
||
两套独立进程语义。生产切换前需按计划把状态与任务模型统一（见迁移计划阶段 C），
|
||
当前仅用于开发期联调。
|
||
"""
|
||
|
||
from contextlib import asynccontextmanager
|
||
|
||
from fastapi import FastAPI
|
||
|
||
from core.config import APP_VERSION
|
||
from core.security import init_secret_key
|
||
from web.errors import install_error_handlers
|
||
from web.middleware import ResponseHygieneMiddleware
|
||
from web.routers import account as account_router
|
||
from web.routers import music as music_router
|
||
from web.routers import podcast as podcast_router
|
||
from web.routers import site as site_router
|
||
from web.routers import system as system_router
|
||
from web.routers import tasks as tasks_router
|
||
|
||
|
||
@asynccontextmanager
|
||
async def _lifespan(app: FastAPI):
|
||
"""应用生命周期：关闭时释放 aiohttp 连接池（含按事件循环隔离的 session）。"""
|
||
yield
|
||
try:
|
||
from core import aiohttp_compat, http_client
|
||
|
||
await http_client.client.close()
|
||
await aiohttp_compat.close()
|
||
except Exception:
|
||
pass
|
||
|
||
|
||
def _init_audio_secret() -> None:
|
||
"""注入音频签名密钥（与 Flask 同源，令两栈 token 互认）。"""
|
||
try:
|
||
import auth_system
|
||
|
||
init_secret_key(auth_system.get_secret_key())
|
||
except Exception:
|
||
pass
|
||
|
||
|
||
def create_app(serve_flask_fallback: bool = False) -> FastAPI:
|
||
"""创建 FastAPI 应用。"""
|
||
_init_audio_secret()
|
||
|
||
app = FastAPI(
|
||
title='云村小助手API服务',
|
||
version=APP_VERSION,
|
||
docs_url='/api/v1/docs',
|
||
redoc_url=None,
|
||
openapi_url='/api/v1/openapi.json',
|
||
lifespan=_lifespan,
|
||
)
|
||
|
||
# 响应侧统一处理：安全头 + 音频直链签名保护 + 版本指纹抹除
|
||
app.add_middleware(ResponseHygieneMiddleware)
|
||
|
||
# 已迁移路由：统一挂 /api/v1（迁移期与 Flask 根路径并存，便于对比）
|
||
app.include_router(system_router.router, prefix='/api/v1', tags=['system'])
|
||
app.include_router(site_router.router, prefix='/api/v1', tags=['site'])
|
||
app.include_router(music_router.router, prefix='/api/v1', tags=['music'])
|
||
app.include_router(account_router.router, prefix='/api/v1', tags=['account'])
|
||
app.include_router(podcast_router.router, prefix='/api/v1', tags=['podcast'])
|
||
app.include_router(tasks_router.router, prefix='/api/v1', tags=['tasks'])
|
||
|
||
install_error_handlers(app)
|
||
|
||
if serve_flask_fallback:
|
||
_mount_flask_fallback(app)
|
||
|
||
return app
|
||
|
||
|
||
def _mount_flask_fallback(app: FastAPI) -> None:
|
||
"""把遗留 Flask WSGI 应用挂到根路径，兜底未迁移的路由。"""
|
||
from starlette.middleware.wsgi import WSGIMiddleware
|
||
|
||
import main as legacy_flask
|
||
|
||
app.mount('/', WSGIMiddleware(legacy_flask.app))
|