DO NOT TRACK ME >:(

backend/apps/litellm/main.py

-from fastapi import FastAPI, Depends
+from fastapi import FastAPI, Depends, HTTPException
 from fastapi.routing import APIRoute
 from fastapi.middleware.cors import CORSMiddleware
 
@@ -9,9 +9,11 @@ from fastapi.responses import JSONResponse
 from starlette.middleware.base import BaseHTTPMiddleware, RequestResponseEndpoint
 from starlette.responses import StreamingResponse
 import json
+import requests
 
-from utils.utils import get_http_authorization_cred, get_current_user
+from utils.utils import get_verified_user, get_current_user
 from config import SRC_LOG_LEVELS, ENV
+from constants import ERROR_MESSAGES
 
 log = logging.getLogger(__name__)
 log.setLevel(SRC_LOG_LEVELS["LITELLM"])
@@ -49,12 +51,13 @@ async def run_background_process(command):
 
 async def start_litellm_background():
     # Command to run in the background
-    command = "litellm --config ./data/litellm/config.yaml"
+    command = "litellm --telemetry False --config ./data/litellm/config.yaml"
     await run_background_process(command)
 
 
 @app.on_event("startup")
 async def startup_event():
+    # TODO: Check config.yaml file and create one
     asyncio.create_task(start_litellm_background())
 
 
@@ -62,82 +65,132 @@ app.state.MODEL_FILTER_ENABLED = MODEL_FILTER_ENABLED
 app.state.MODEL_FILTER_LIST = MODEL_FILTER_LIST
 
 
-@app.middleware("http")
-async def auth_middleware(request: Request, call_next):
-    auth_header = request.headers.get("Authorization", "")
-    request.state.user = None
-
-    try:
-        user = get_current_user(get_http_authorization_cred(auth_header))
-        log.debug(f"user: {user}")
-        request.state.user = user
-    except Exception as e:
-        return JSONResponse(status_code=400, content={"detail": str(e)})
-
-    response = await call_next(request)
-    return response
-
-
 @app.get("/")
 async def get_status():
     return {"status": True}
 
 
-class ModifyModelsResponseMiddleware(BaseHTTPMiddleware):
-    async def dispatch(
-        self, request: Request, call_next: RequestResponseEndpoint
-    ) -> Response:
-
-        response = await call_next(request)
-        user = request.state.user
-
-        if "/models" in request.url.path:
-            if isinstance(response, StreamingResponse):
-                # Read the content of the streaming response
-                body = b""
-                async for chunk in response.body_iterator:
-                    body += chunk
-
-                data = json.loads(body.decode("utf-8"))
-
-                if app.state.MODEL_FILTER_ENABLED:
-                    if user and user.role == "user":
-                        data["data"] = list(
-                            filter(
-                                lambda model: model["id"]
-                                in app.state.MODEL_FILTER_LIST,
-                                data["data"],
-                            )
-                        )
-
-                # Modified Flag
-                data["modified"] = True
-                return JSONResponse(content=data)
-
-        return response
-
+@app.get("/models")
+@app.get("/v1/models")
+async def get_models(user=Depends(get_current_user)):
+    url = "http://localhost:4000/v1"
+    r = None
+    try:
+        r = requests.request(method="GET", url=f"{url}/models")
+        r.raise_for_status()
 
-app.add_middleware(ModifyModelsResponseMiddleware)
+        data = r.json()
 
+        if app.state.MODEL_FILTER_ENABLED:
+            if user and user.role == "user":
+                data["data"] = list(
+                    filter(
+                        lambda model: model["id"] in app.state.MODEL_FILTER_LIST,
+                        data["data"],
+                    )
+                )
 
-# from litellm.proxy.proxy_server import ProxyConfig, initialize
-# from litellm.proxy.proxy_server import app
+        return data
+    except Exception as e:
+        log.exception(e)
+        error_detail = "Open WebUI: Server Connection Error"
+        if r is not None:
+            try:
+                res = r.json()
+                if "error" in res:
+                    error_detail = f"External: {res['error']}"
+            except:
+                error_detail = f"External: {e}"
 
-# proxy_config = ProxyConfig()
+        raise HTTPException(
+            status_code=r.status_code if r else 500,
+            detail=error_detail,
+        )
 
 
-# async def config():
-#     router, model_list, general_settings = await proxy_config.load_config(
-#         router=None, config_file_path="./data/litellm/config.yaml"
-#     )
+@app.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE"])
+async def proxy(path: str, request: Request, user=Depends(get_verified_user)):
+    body = await request.body()
 
-#     await initialize(config="./data/litellm/config.yaml", telemetry=False)
+    url = "http://localhost:4000/v1"
 
+    target_url = f"{url}/{path}"
 
-# async def startup():
-#     await config()
+    headers = {}
+    # headers["Authorization"] = f"Bearer {key}"
+    headers["Content-Type"] = "application/json"
 
+    r = None
 
-# @app.on_event("startup")
-# async def on_startup():
-#     await startup()
+    try:
+        r = requests.request(
+            method=request.method,
+            url=target_url,
+            data=body,
+            headers=headers,
+            stream=True,
+        )
+
+        r.raise_for_status()
+
+        # Check if response is SSE
+        if "text/event-stream" in r.headers.get("Content-Type", ""):
+            return StreamingResponse(
+                r.iter_content(chunk_size=8192),
+                status_code=r.status_code,
+                headers=dict(r.headers),
+            )
+        else:
+            response_data = r.json()
+            return response_data
+    except Exception as e:
+        log.exception(e)
+        error_detail = "Open WebUI: Server Connection Error"
+        if r is not None:
+            try:
+                res = r.json()
+                if "error" in res:
+                    error_detail = f"External: {res['error']['message'] if 'message' in res['error'] else res['error']}"
+            except:
+                error_detail = f"External: {e}"
+
+        raise HTTPException(
+            status_code=r.status_code if r else 500, detail=error_detail
+        )
+
+
+# class ModifyModelsResponseMiddleware(BaseHTTPMiddleware):
+#     async def dispatch(
+#         self, request: Request, call_next: RequestResponseEndpoint
+#     ) -> Response:
+
+#         response = await call_next(request)
+#         user = request.state.user
+
+#         if "/models" in request.url.path:
+#             if isinstance(response, StreamingResponse):
+#                 # Read the content of the streaming response
+#                 body = b""
+#                 async for chunk in response.body_iterator:
+#                     body += chunk
+
+#                 data = json.loads(body.decode("utf-8"))
+
+#                 if app.state.MODEL_FILTER_ENABLED:
+#                     if user and user.role == "user":
+#                         data["data"] = list(
+#                             filter(
+#                                 lambda model: model["id"]
+#                                 in app.state.MODEL_FILTER_LIST,
+#                                 data["data"],
+#                             )
+#                         )
+
+#                 # Modified Flag
+#                 data["modified"] = True
+#                 return JSONResponse(content=data)
+
+#         return response
+
+
+# app.add_middleware(ModifyModelsResponseMiddleware)