feat log request / response on pass through endpoints

docs/my-website/docs/proxy/logging.md

@@ -63,7 +63,7 @@ Removes any field with `user_api_key_*` from metadata.
 
 ## What gets logged?
 
-Found under `kwargs["standard_logging_payload"]`. This is a standard payload, logged for every response.
+Found under `kwargs["standard_logging_object"]`. This is a standard payload, logged for every response.
 
 ```python
 class StandardLoggingPayload(TypedDict):

litellm/proxy/pass_through_endpoints/pass_through_endpoints.py

@@ -37,13 +37,20 @@ from litellm.proxy.auth.user_api_key_auth import user_api_key_auth
 
 from .streaming_handler import chunk_processor
 from .success_handler import PassThroughEndpointLogging
-from .types import EndpointType
+from .types import EndpointType, PassthroughStandardLoggingObject
 
 router = APIRouter()
 
 pass_through_endpoint_logging = PassThroughEndpointLogging()
 
 
+def get_response_body(response: httpx.Response):
+    try:
+        return response.json()
+    except Exception:
+        return response.text
+
+
 async def set_env_variables_in_header(custom_headers: dict):
     """
     checks if any headers on config.yaml are defined as os.environ/COHERE_API_KEY etc
@@ -359,6 +366,10 @@ async def pass_through_request(
             litellm_call_id=str(uuid.uuid4()),
             function_id="1245",
         )
+        passthrough_logging_payload = PassthroughStandardLoggingObject(
+            url=str(url),
+            request_body=_parsed_body,
+        )
 
         # done for supporting 'parallel_request_limiter.py' with pass-through endpoints
         kwargs = {
@@ -371,6 +382,7 @@ async def pass_through_request(
                 }
             },
             "call_type": "pass_through_endpoint",
+            "passthrough_logging_payload": passthrough_logging_payload,
         }
         logging_obj.update_environment_variables(
             model="unknown",
@@ -503,8 +515,8 @@ async def pass_through_request(
         content = await response.aread()
 
         ## LOG SUCCESS
+        passthrough_logging_payload["response_body"] = get_response_body(response)
         end_time = datetime.now()
-
         await pass_through_endpoint_logging.pass_through_async_success_handler(
             httpx_response=response,
             url_route=str(url),
@@ -513,6 +525,7 @@ async def pass_through_request(
             end_time=end_time,
             logging_obj=logging_obj,
             cache_hit=False,
+            **kwargs,
         )
 
         return Response(

litellm/proxy/pass_through_endpoints/success_handler.py

@@ -48,6 +48,7 @@ class PassThroughEndpointLogging:
                 start_time=start_time,
                 end_time=end_time,
                 cache_hit=False,
+                **kwargs,
             )
 
     def is_vertex_route(self, url_route: str):
@@ -103,6 +104,7 @@ class PassThroughEndpointLogging:
                 start_time=start_time,
                 end_time=end_time,
                 cache_hit=cache_hit,
+                **kwargs,
             )
         elif "predict" in url_route:
             from litellm.llms.vertex_ai_and_google_ai_studio.image_generation.image_generation_handler import (
@@ -152,4 +154,5 @@ class PassThroughEndpointLogging:
                 start_time=start_time,
                 end_time=end_time,
                 cache_hit=cache_hit,
+                **kwargs,
             )

litellm/proxy/pass_through_endpoints/types.py

@@ -1,6 +1,13 @@
 from enum import Enum
+from typing import Optional, TypedDict
 
 
 class EndpointType(str, Enum):
     VERTEX_AI = "vertex-ai"
     GENERIC = "generic"
+
+
+class PassthroughStandardLoggingObject(TypedDict, total=False):
+    url: str
+    request_body: Optional[dict]
+    response_body: Optional[dict]