forked from open-webui/open-webui
150 lines
4.4 KiB
Python
150 lines
4.4 KiB
Python
from fastapi import FastAPI, Request, Response, HTTPException, Depends, status
|
|
from fastapi.middleware.cors import CORSMiddleware
|
|
from fastapi.responses import StreamingResponse
|
|
from fastapi.concurrency import run_in_threadpool
|
|
|
|
import requests
|
|
import json
|
|
import uuid
|
|
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, get_admin_user
|
|
from config import OLLAMA_BASE_URL, WEBUI_AUTH
|
|
|
|
app = FastAPI()
|
|
app.add_middleware(
|
|
CORSMiddleware,
|
|
allow_origins=["*"],
|
|
allow_credentials=True,
|
|
allow_methods=["*"],
|
|
allow_headers=["*"],
|
|
)
|
|
|
|
app.state.OLLAMA_BASE_URL = OLLAMA_BASE_URL
|
|
|
|
# TARGET_SERVER_URL = OLLAMA_API_BASE_URL
|
|
|
|
|
|
REQUEST_POOL = []
|
|
|
|
|
|
@app.get("/url")
|
|
async def get_ollama_api_url(user=Depends(get_admin_user)):
|
|
return {"OLLAMA_BASE_URL": app.state.OLLAMA_BASE_URL}
|
|
|
|
|
|
class UrlUpdateForm(BaseModel):
|
|
url: str
|
|
|
|
|
|
@app.post("/url/update")
|
|
async def update_ollama_api_url(form_data: UrlUpdateForm, user=Depends(get_admin_user)):
|
|
app.state.OLLAMA_BASE_URL = form_data.url
|
|
return {"OLLAMA_BASE_URL": app.state.OLLAMA_BASE_URL}
|
|
|
|
|
|
@app.get("/cancel/{request_id}")
|
|
async def cancel_ollama_request(request_id: str, user=Depends(get_current_user)):
|
|
if user:
|
|
if request_id in REQUEST_POOL:
|
|
REQUEST_POOL.remove(request_id)
|
|
return True
|
|
else:
|
|
raise HTTPException(status_code=401, detail=ERROR_MESSAGES.ACCESS_PROHIBITED)
|
|
|
|
|
|
@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_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=status.HTTP_401_UNAUTHORIZED,
|
|
detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
|
|
)
|
|
else:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_401_UNAUTHORIZED,
|
|
detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
|
|
)
|
|
|
|
headers.pop("host", None)
|
|
headers.pop("authorization", None)
|
|
headers.pop("origin", None)
|
|
headers.pop("referer", None)
|
|
|
|
r = None
|
|
|
|
def get_request():
|
|
nonlocal r
|
|
|
|
request_id = str(uuid.uuid4())
|
|
try:
|
|
REQUEST_POOL.append(request_id)
|
|
|
|
def stream_content():
|
|
try:
|
|
if path == "generate":
|
|
data = json.loads(body.decode("utf-8"))
|
|
|
|
if not ("stream" in data and data["stream"] == False):
|
|
yield json.dumps({"id": request_id, "done": False}) + "\n"
|
|
|
|
elif path == "chat":
|
|
yield json.dumps({"id": request_id, "done": False}) + "\n"
|
|
|
|
for chunk in r.iter_content(chunk_size=8192):
|
|
if request_id in REQUEST_POOL:
|
|
yield chunk
|
|
else:
|
|
print("User: canceled request")
|
|
break
|
|
finally:
|
|
if hasattr(r, "close"):
|
|
r.close()
|
|
if request_id in REQUEST_POOL:
|
|
REQUEST_POOL.remove(request_id)
|
|
|
|
r = requests.request(
|
|
method=request.method,
|
|
url=target_url,
|
|
data=body,
|
|
headers=headers,
|
|
stream=True,
|
|
)
|
|
|
|
r.raise_for_status()
|
|
|
|
# r.close()
|
|
|
|
return StreamingResponse(
|
|
stream_content(),
|
|
status_code=r.status_code,
|
|
headers=dict(r.headers),
|
|
)
|
|
except Exception as e:
|
|
raise e
|
|
|
|
try:
|
|
return await run_in_threadpool(get_request)
|
|
except Exception as e:
|
|
error_detail = "Open WebUI: Server Connection Error"
|
|
if r is not None:
|
|
try:
|
|
res = r.json()
|
|
if "error" in res:
|
|
error_detail = f"Ollama: {res['error']}"
|
|
except:
|
|
error_detail = f"Ollama: {e}"
|
|
|
|
raise HTTPException(
|
|
status_code=r.status_code if r else 500,
|
|
detail=error_detail,
|
|
)
|