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https://github.com/ThearchyHelios/AgentLab.git
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ThearchyHelios
163 lines
5.5 KiB
Python
163 lines
5.5 KiB
Python
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 AsyncIterator
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from fastapi import FastAPI, Request
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.responses import JSONResponse
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from app.api import (
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artifacts, bundle, catalog, compare, conversations, copilot, datasources, evidence, governance, inquiry, knowledge,
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runs, sandbox, schedules, settings as settings_api, source_versions, table_imports, tools, whatif, workflows,
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)
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from app.api.coded import CodedHTTPException, coded_handler
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from app.core.config import settings
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from app.db.base import init_db
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from app.engine.runner import run_manager
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from app.seed import seed_defaults
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logging.basicConfig(
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level=logging.INFO,
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format="%(asctime)s %(levelname)-7s %(name)s | %(message)s",
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datefmt="%H:%M:%S",
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)
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logger = logging.getLogger("agentlab")
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@asynccontextmanager
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async def lifespan(_: FastAPI) -> AsyncIterator[None]:
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from app.data.engine import sqlite_dqs_self_check
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sqlite_dqs_self_check() # 写错的双引号列名必须报错；做不到就记日志并让启动失败
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settings.ensure_dirs()
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await init_db()
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await seed_defaults()
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# 把存的 embedding 配置读进来。不读的话重启后会悄悄退回本地哈希向量，
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# 而库里的向量是上次那个模型建的——检索会整体退回关键词，
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# 用户只看到"重启之后搜得不准了"
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from app.db.base import SessionLocal
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from app.memory.embeddings import load_setting
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async with SessionLocal() as _session:
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try:
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await load_setting(_session)
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except Exception as e: # noqa: BLE001 - key 没了不该拦住整个服务起不来
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logger.warning("embedding 配置没能生效，暂用本地向量：%s", e)
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# 上次被强杀时留下的"处理中"文档。后台任务不会自己回来，留着它只会在
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# 界面上永远转圈——和 runner 对 running 的 run 是同一个道理
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from sqlalchemy import update as _update
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from app.db.models import Document as _Doc
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async with SessionLocal() as _s:
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await _s.execute(
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_update(_Doc).where(_Doc.status == "processing")
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.values(status="failed", error="服务重启，这份文档没有处理完，请重新上传")
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)
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await _s.commit()
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# 上传表格的版本底座：清理上次没发布完的文件、给老上传补初始版本、回收没人用的版本。
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# 出错只记日志：最坏是留下几个多余的文件，不该让服务起不来
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from app.data import table_versions
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async with SessionLocal() as _s:
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try:
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await table_versions.startup(_s)
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except Exception: # noqa: BLE001
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logger.exception("上传表格的版本整理失败，服务照常启动")
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await run_manager.setup()
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from app.sandbox.manager import sandbox_manager as _sbm
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await _sbm.start_reaper()
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# 定时任务的调度循环放在 run_manager 之后起：它到点要发起运行。拷来的数据目录（检查脚本的
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# --stacks）用 AGENTLAB_SCHEDULER=0 关掉，免得替原库把定时任务再执行一遍
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from app import scheduler
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if scheduler.scheduler_enabled():
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await scheduler.start()
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logger.info("AgentLab 就绪 · 数据目录 %s", settings.data_dir)
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try:
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yield
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finally:
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# 先停调度，再停运行：停运行的途中不该再有新运行被发起
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await scheduler.stop()
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await run_manager.shutdown()
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from app.sandbox.manager import sandbox_manager
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await sandbox_manager.close()
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logger.info("已停止")
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app = FastAPI(
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title="AgentLab",
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description="可视化 Agent 编排实验台",
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version="0.1.0",
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lifespan=lifespan,
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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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)
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for router in (
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workflows.router,
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# 这几个也挂在 /api/runs 下面，要在 runs.router 之前登记：以后加的固定路径（/api/runs/compare 之类）
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# 才不会被 runs 的 /{run_id} 当成运行 id 吃掉。/{run_id}/… 的子路径放在哪边都不冲突
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compare.router,
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bundle.router,
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inquiry.router,
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whatif.router,
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runs.router,
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runs.approvals_router,
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evidence.router,
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settings_api.router,
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tools.router,
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tools.custom_router,
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tools.mcp_router,
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knowledge.memory_router,
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knowledge.kb_router,
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knowledge.skills_router,
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sandbox.router,
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copilot.router,
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conversations.router,
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artifacts.router,
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governance.router,
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schedules.router,
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# 按配方导入的 /api/datasources/imports/… 要在 datasources 的通配 /{source_id} 之前登记
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table_imports.router,
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source_versions.router,
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catalog.router,
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datasources.router,
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):
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app.include_router(router)
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app.add_exception_handler(CodedHTTPException, coded_handler)
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@app.exception_handler(ValueError)
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async def value_error_handler(_: Request, exc: ValueError) -> JSONResponse:
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return JSONResponse(status_code=400, content={"detail": str(exc)})
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@app.get("/api/health")
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async def health() -> dict[str, str]:
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return {"status": "ok", "service": "agentlab"}
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# 生产部署：前端构建产物由服务端一并托管（见 app/web.py）。页面回退是通配路由，
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# 必须在所有 /api 路由之后注册。没设 AGENTLAB_WEB_DIST 时什么都不挂，开发模式照旧
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if settings.web_dist is not None:
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from app.web import mount_web
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mount_web(app, settings.web_dist)
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