调整入口代码结构

backend/main.py

@@ -1,4 +1,5 @@
 from dotenv import load_dotenv
+from llama_index.core.node_parser import SentenceSplitter
 
 load_dotenv()
 
@@ -13,55 +14,55 @@ from app.api.routers.upload import file_upload_router
 from app.settings import init_settings
 from app.observability import init_observability
 from fastapi.staticfiles import StaticFiles
-
+from phoenix.trace import using_project
 
 logger = logging.getLogger("uvicorn")
-app = None
 
-def init_webserver():
-    global app
-    app = FastAPI()
-    environment = os.getenv("ENVIRONMENT", "dev")  # Default to 'development' if not set
-    if environment == "dev":
-        logger.warning("Running in development mode - allowing CORS for all origins")
-        app.add_middleware(
-            CORSMiddleware,
-            allow_origins=["*"],
-            allow_credentials=True,
-            allow_methods=["*"],
-            allow_headers=["*"],
-        )
+usPrj = using_project(os.getenv("PHOENIX_PROJECT_NAME"))
+usPrj.__enter__()
 
-    def mount_static_files(directory, path):
-        if os.path.exists(directory):
-            for dir, _, _ in os.walk(directory):
-                relative_path = os.path.relpath(dir, directory)
-                mount_path = path if relative_path == "." else f"{path}/{relative_path}"
-                logger.info(f"Mounting static files '{dir}' at {mount_path}")
-                app.mount(mount_path, StaticFiles(directory=dir), name=f"{dir}-static")
+init_settings()
+init_observability()
 
-    # Mount the data files to serve the file viewer
-    mount_static_files("data", "/api/files/data")
-    # Mount the output files from tools
-    mount_static_files("data_output", "/api/files/output")
-    app.include_router(chat_router, prefix="/api/chat")
-    app.include_router(file_upload_router, prefix="/api/chat/upload")
+app = FastAPI()
 
-    # Redirect to documentation page when accessing base URL
-    @app.get("/")
-    async def redirect_to_docs():
-        return RedirectResponse(url="/docs")
+environment = os.getenv("ENVIRONMENT", "dev")  # Default to 'development' if not set
+if environment == "dev":
+    logger.warning("Running in development mode - allowing CORS for all origins")
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=["*"],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
 
+def mount_static_files(directory, path):
+    if os.path.exists(directory):
+        for dir, _, _ in os.walk(directory):
+            relative_path = os.path.relpath(dir, directory)
+            mount_path = path if relative_path == "." else f"{path}/{relative_path}"
+            logger.info(f"Mounting static files '{dir}' at {mount_path}")
+            app.mount(mount_path, StaticFiles(directory=dir), name=f"{dir}-static")
+
+# Mount the data files to serve the file viewer
+mount_static_files("data", "/api/files/data")
+# Mount the output files from tools
+mount_static_files("data_output", "/api/files/output")
+app.include_router(chat_router, prefix="/api/chat")
+app.include_router(file_upload_router, prefix="/api/chat/upload")
+
+# Redirect to documentation page when accessing base URL
+@app.get("/")
+async def redirect_to_docs():
+    return RedirectResponse(url="/docs")
+
+SentenceSplitter
 if __name__ == "__main__":
-    from phoenix.trace import using_project
-    with using_project(os.getenv("PHOENIX_PROJECT_NAME")) as obj:
+    app_host = os.getenv("APP_HOST", "0.0.0.0")
+    app_port = int(os.getenv("APP_PORT", "8000"))
+    reload = True if environment == "dev" else False
+    reload = False
+    uvicorn.run(app="main:app", host=app_host, port=app_port, reload=reload)
 
-        init_settings()
-        init_observability()
-        init_webserver()
-
-        app_host = os.getenv("APP_HOST", "0.0.0.0")
-        app_port = int(os.getenv("APP_PORT", "8000"))
-        #reload = True if environment == "dev" else False
-        reload = False
-        uvicorn.run(app=app, host=app_host, port=app_port, reload=reload)
+    #usPrj.__exit__()