Litellm dev 12 23 2024 p1 (#7383)

* feat(guardrails_endpoint.py): new `/guardrails/list` endpoint

Allow users to view what the available guardrails are

* docs: document new `/guardrails/list` endpoint

* docs(enterprise.md): update docs

* fix(openai/transcription/handler.py): support cost tracking on vtt + srt formats

* fix(openai/transcriptions/handler.py): default to 'verbose_json' response format if 'text' or 'json' response_format received. ensures 'duration' param is received for all audio transcription requests

* fix: fix linting errors

* fix: remove unused import

litellm/proxy/guardrails/guardrail_endpoints.py

@@ -0,0 +1,50 @@
+"""
+CRUD ENDPOINTS FOR GUARDRAILS
+"""
+
+from typing import Dict, List, Optional, cast
+
+from fastapi import APIRouter, Depends, HTTPException, status
+
+from litellm.proxy._types import CommonProxyErrors
+from litellm.proxy.auth.user_api_key_auth import user_api_key_auth
+
+#### GUARDRAILS ENDPOINTS ####
+
+router = APIRouter()
+
+
+def _get_guardrail_names_from_config(guardrails_config: List[Dict]) -> List[str]:
+    return [guardrail["guardrail_name"] for guardrail in guardrails_config]
+
+
+@router.get(
+    "/guardrails/list",
+    tags=["Guardrails"],
+    dependencies=[Depends(user_api_key_auth)],
+)
+async def list_guardrails():
+    """
+    List the guardrails that are available on the proxy server
+    """
+    from litellm.proxy.proxy_server import premium_user, proxy_config
+
+    if not premium_user:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail={
+                "error": CommonProxyErrors.not_premium_user.value,
+            },
+        )
+
+    config = proxy_config.config
+
+    _guardrails_config = cast(Optional[list[dict]], config.get("guardrails"))
+
+    if _guardrails_config is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail={"error": "No guardrails found in config"},
+        )
+
+    return _get_guardrail_names_from_config(config["guardrails"])