open-webui/backend/main.py

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import time
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from fastapi import FastAPI, Request
from fastapi.staticfiles import StaticFiles
from fastapi import HTTPException
from fastapi.middleware.wsgi import WSGIMiddleware
from fastapi.middleware.cors import CORSMiddleware
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from starlette.exceptions import HTTPException as StarletteHTTPException
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from apps.ollama.main import app as ollama_app
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from apps.openai.main import app as openai_app
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from apps.web.main import app as webui_app
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from apps.rag.main import app as rag_app
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from config import ENV, FRONTEND_BUILD_DIR
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class SPAStaticFiles(StaticFiles):
async def get_response(self, path: str, scope):
try:
return await super().get_response(path, scope)
except (HTTPException, StarletteHTTPException) as ex:
if ex.status_code == 404:
return await super().get_response("index.html", scope)
else:
raise ex
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app = FastAPI(docs_url="/docs" if ENV == "dev" else None, redoc_url=None)
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origins = ["*"]
app.add_middleware(
CORSMiddleware,
allow_origins=origins,
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
@app.middleware("http")
async def check_url(request: Request, call_next):
start_time = int(time.time())
response = await call_next(request)
process_time = int(time.time()) - start_time
response.headers["X-Process-Time"] = str(process_time)
return response
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app.mount("/api/v1", webui_app)
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app.mount("/ollama/api", ollama_app)
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app.mount("/openai/api", openai_app)
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app.mount("/rag/api/v1", rag_app)
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app.mount(
"/",
SPAStaticFiles(directory=FRONTEND_BUILD_DIR, html=True),
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name="spa-static-files",
)