140 lines
4.8 KiB
Python
140 lines
4.8 KiB
Python
# uvicorn main:app --host 0.0.0.0 --port 8000 --reload
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# 1. pip install fastapi-cdn-host
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# 2. import fastapi_cdn_host
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# 3. fastapi_cdn_host.patch_docs(app)
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from fastapi import FastAPI
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import fastapi_cdn_host
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from os.path import dirname, realpath
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from dotenv import load_dotenv
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load_dotenv()
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from utils.util_log import init_logger
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from loguru import logger
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base_dir: str = dirname(realpath(__file__))
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init_logger(base_dir)
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from th_agenter.api.routes import router
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from contextlib import asynccontextmanager
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from starlette.exceptions import HTTPException as StarletteHTTPException
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from fastapi.exceptions import RequestValidationError
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from fastapi.responses import JSONResponse
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from fastapi.staticfiles import StaticFiles
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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"""Application lifespan manager."""
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logger.info("[生命周期] - Starting up TH Agenter application...")
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yield
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# Shutdown
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logger.info("[生命周期] - Shutting down TH Agenter application...")
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def setup_exception_handlers(app: FastAPI) -> None:
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"""Setup global exception handlers."""
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# Import custom exceptions and handlers
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from utils.util_exceptions import ChatAgentException, chat_agent_exception_handler
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@app.exception_handler(ChatAgentException)
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async def custom_chat_agent_exception_handler(request, exc):
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return await chat_agent_exception_handler(request, exc)
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@app.exception_handler(StarletteHTTPException)
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async def http_exception_handler(request, exc):
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from utils.util_exceptions import HxfErrorResponse
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logger.exception(f"HTTP Exception: {exc.status_code} - {exc.detail} - {request.method} {request.url}")
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return HxfErrorResponse(exc)
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def make_json_serializable(obj):
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"""递归地将对象转换为JSON可序列化的格式"""
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if obj is None or isinstance(obj, (str, int, float, bool)):
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return obj
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elif isinstance(obj, bytes):
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return obj.decode('utf-8')
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elif isinstance(obj, (ValueError, Exception)):
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return str(obj)
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elif isinstance(obj, dict):
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return {k: make_json_serializable(v) for k, v in obj.items()}
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elif isinstance(obj, (list, tuple)):
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return [make_json_serializable(item) for item in obj]
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else:
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# For any other object, convert to string
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return str(obj)
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@app.exception_handler(RequestValidationError)
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async def validation_exception_handler(request, exc):
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# Convert any non-serializable objects to strings in error details
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try:
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errors = make_json_serializable(exc.errors())
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except Exception as e:
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# Fallback: if even our conversion fails, use a simple error message
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errors = [{"type": "serialization_error", "msg": f"Error processing validation details: {str(e)}"}]
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logger.exception(f"Request Validation Error: {errors}")
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logger.exception(f"validation_error: {errors}")
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return JSONResponse(
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status_code=422,
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content={
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"error": {
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"type": "validation_error",
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"message": "Request validation failed",
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"details": errors
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}
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}
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)
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@app.exception_handler(Exception)
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async def general_exception_handler(request, exc):
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logger.error(f"Unhandled exception: {exc}", exc_info=True)
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return JSONResponse(
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status_code=500,
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content={
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"error": {
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"type": "internal_error",
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"message": "Internal server error"
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}
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}
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)
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def create_app() -> FastAPI:
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"""Create and configure FastAPI application."""
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from th_agenter.core.config import get_settings
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settings = get_settings()
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# Create FastAPI app
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app = FastAPI(
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title=settings.app_name,
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version=settings.app_version,
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description="基于Vue的第一个聊天智能体应用，使用FastAPI后端，由TH Agenter修改",
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debug=settings.debug,
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lifespan=lifespan,
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)
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# Add middleware
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from th_agenter.core.app import setup_middleware
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setup_middleware(app, settings)
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# # Add exception handlers
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setup_exception_handlers(app)
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add_router(app)
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return app
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def add_router(app: FastAPI) -> None:
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"""Add default routers to the FastAPI application."""
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@app.get("/")
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def read_root():
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logger.info("Hello World")
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return {"Hello": "World"}
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# Include routers
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app.include_router(router, prefix="/api")
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app = create_app()
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fastapi_cdn_host.patch_docs(app)
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# from test.example import internet_search_tool
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