v0 add rerank on litellm proxy

litellm/proxy/rerank_endpoints/endpoints.py

@@ -0,0 +1,124 @@
+#### Rerank Endpoints #####
+from datetime import datetime, timedelta, timezone
+from typing import List, Optional
+
+import fastapi
+import orjson
+from fastapi import APIRouter, Depends, Header, HTTPException, Request, Response, status
+from fastapi.responses import ORJSONResponse
+
+import litellm
+from litellm._logging import verbose_proxy_logger
+from litellm.proxy._types import *
+from litellm.proxy.auth.user_api_key_auth import user_api_key_auth
+
+router = APIRouter()
+import asyncio
+
+
+@router.post(
+    "/v1/rerank",
+    dependencies=[Depends(user_api_key_auth)],
+    response_class=ORJSONResponse,
+    tags=["rerank"],
+)
+@router.post(
+    "/rerank",
+    dependencies=[Depends(user_api_key_auth)],
+    response_class=ORJSONResponse,
+    tags=["rerank"],
+)
+async def rerank(
+    request: Request,
+    fastapi_response: Response,
+    user_api_key_dict: UserAPIKeyAuth = Depends(user_api_key_auth),
+):
+    from litellm.proxy.proxy_server import (
+        add_litellm_data_to_request,
+        general_settings,
+        get_custom_headers,
+        llm_router,
+        proxy_config,
+        proxy_logging_obj,
+        route_request,
+        user_model,
+        version,
+    )
+
+    data = {}
+    try:
+        body = await request.body()
+        data = orjson.loads(body)
+
+        # Include original request and headers in the data
+        data = await add_litellm_data_to_request(
+            data=data,
+            request=request,
+            general_settings=general_settings,
+            user_api_key_dict=user_api_key_dict,
+            version=version,
+            proxy_config=proxy_config,
+        )
+
+        ### CALL HOOKS ### - modify incoming data / reject request before calling the model
+        data = await proxy_logging_obj.pre_call_hook(
+            user_api_key_dict=user_api_key_dict, data=data, call_type="rerank"
+        )
+
+        ## ROUTE TO CORRECT ENDPOINT ##
+        llm_call = await route_request(
+            data=data,
+            route_type="arerank",
+            llm_router=llm_router,
+            user_model=user_model,
+        )
+        response = await llm_call
+
+        ### ALERTING ###
+        asyncio.create_task(
+            proxy_logging_obj.update_request_status(
+                litellm_call_id=data.get("litellm_call_id", ""), status="success"
+            )
+        )
+
+        ### RESPONSE HEADERS ###
+        hidden_params = getattr(response, "_hidden_params", {}) or {}
+        model_id = hidden_params.get("model_id", None) or ""
+        cache_key = hidden_params.get("cache_key", None) or ""
+        api_base = hidden_params.get("api_base", None) or ""
+
+        fastapi_response.headers.update(
+            get_custom_headers(
+                user_api_key_dict=user_api_key_dict,
+                model_id=model_id,
+                cache_key=cache_key,
+                api_base=api_base,
+                version=version,
+                model_region=getattr(user_api_key_dict, "allowed_model_region", ""),
+                request_data=data,
+            )
+        )
+
+        return response
+    except Exception as e:
+        await proxy_logging_obj.post_call_failure_hook(
+            user_api_key_dict=user_api_key_dict, original_exception=e, request_data=data
+        )
+        verbose_proxy_logger.error(
+            "litellm.proxy.proxy_server.rerank(): Exception occured - {}".format(str(e))
+        )
+        if isinstance(e, HTTPException):
+            raise ProxyException(
+                message=getattr(e, "message", str(e)),
+                type=getattr(e, "type", "None"),
+                param=getattr(e, "param", "None"),
+                code=getattr(e, "status_code", status.HTTP_400_BAD_REQUEST),
+            )
+        else:
+            error_msg = f"{str(e)}"
+            raise ProxyException(
+                message=getattr(e, "message", error_msg),
+                type=getattr(e, "type", "None"),
+                param=getattr(e, "param", "None"),
+                code=getattr(e, "status_code", 500),
+            )