open-webui/backend/apps/ollama/main.py
Timothy J. Baek a37b9c126f refac
2024-01-05 01:29:04 -08:00

125 lines
3.8 KiB
Python

from fastapi import FastAPI, Request, Response, HTTPException, Depends
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import StreamingResponse
import requests
import json
from pydantic import BaseModel
from apps.web.models.users import Users
from constants import ERROR_MESSAGES
from utils.utils import decode_token, get_current_user
from config import OLLAMA_API_BASE_URL, WEBUI_AUTH
import aiohttp
app = FastAPI()
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
app.state.OLLAMA_API_BASE_URL = OLLAMA_API_BASE_URL
# TARGET_SERVER_URL = OLLAMA_API_BASE_URL
@app.get("/url")
async def get_ollama_api_url(user=Depends(get_current_user)):
if user and user.role == "admin":
return {"OLLAMA_API_BASE_URL": app.state.OLLAMA_API_BASE_URL}
else:
raise HTTPException(status_code=401, detail=ERROR_MESSAGES.ACCESS_PROHIBITED)
class UrlUpdateForm(BaseModel):
url: str
@app.post("/url/update")
async def update_ollama_api_url(
form_data: UrlUpdateForm, user=Depends(get_current_user)
):
if user and user.role == "admin":
app.state.OLLAMA_API_BASE_URL = form_data.url
return {"OLLAMA_API_BASE_URL": app.state.OLLAMA_API_BASE_URL}
else:
raise HTTPException(status_code=401, detail=ERROR_MESSAGES.ACCESS_PROHIBITED)
# async def fetch_sse(method, target_url, body, headers):
# async with aiohttp.ClientSession() as session:
# try:
# async with session.request(
# method, target_url, data=body, headers=headers
# ) as response:
# print(response.status)
# async for line in response.content:
# yield line
# except Exception as e:
# print(e)
# error_detail = "Ollama WebUI: Server Connection Error"
# yield json.dumps({"error": error_detail, "message": str(e)}).encode()
@app.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE"])
async def proxy(path: str, request: Request, user=Depends(get_current_user)):
target_url = f"{app.state.OLLAMA_API_BASE_URL}/{path}"
body = await request.body()
headers = dict(request.headers)
if user.role in ["user", "admin"]:
if path in ["pull", "delete", "push", "copy", "create"]:
if user.role != "admin":
raise HTTPException(
status_code=401, detail=ERROR_MESSAGES.ACCESS_PROHIBITED
)
else:
raise HTTPException(status_code=401, detail=ERROR_MESSAGES.ACCESS_PROHIBITED)
headers.pop("Host", None)
headers.pop("Authorization", None)
headers.pop("Origin", None)
headers.pop("Referer", None)
session = aiohttp.ClientSession()
response = None
try:
response = await session.request(
request.method, target_url, data=body, headers=headers
)
if not response.ok:
data = await response.json()
print(data)
response.raise_for_status()
async def generate():
async for line in response.content:
yield line
await session.close()
return StreamingResponse(generate(), response.status)
except Exception as e:
print(e)
error_detail = "Ollama WebUI: Server Connection Error"
if response is not None:
try:
res = await response.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
await session.close()
raise HTTPException(
status_code=response.status if response else 500,
detail=error_detail,
)