fix(internal_user_endpoints.py): support adding guardrails on /user/update

Fixes https://github.com/BerriAI/litellm/issues/6942

litellm/proxy/_types.py

@@ -2183,3 +2183,11 @@ PassThroughEndpointLoggingResultValues = Union[
 class PassThroughEndpointLoggingTypedDict(TypedDict):
     result: Optional[PassThroughEndpointLoggingResultValues]
     kwargs: dict
+
+
+LiteLLM_ManagementEndpoint_MetadataFields = [
+    "model_rpm_limit",
+    "model_tpm_limit",
+    "guardrails",
+    "tags",
+]

litellm/proxy/management_endpoints/internal_user_endpoints.py

@@ -32,6 +32,7 @@ from litellm.proxy.auth.user_api_key_auth import user_api_key_auth
 from litellm.proxy.management_endpoints.key_management_endpoints import (
     duration_in_seconds,
     generate_key_helper_fn,
+    prepare_metadata_fields,
 )
 from litellm.proxy.management_helpers.utils import (
     add_new_member,
@@ -459,6 +460,7 @@ async def user_update(
         "user_id": "test-litellm-user-4",
         "user_role": "proxy_admin_viewer"
     }'
+    ```
     
     Parameters:
         - user_id: Optional[str] - Specify a user id. If not set, a unique id will be generated.
@@ -491,7 +493,7 @@ async def user_update(
         - duration: Optional[str] - [NOT IMPLEMENTED].
         - key_alias: Optional[str] - [NOT IMPLEMENTED].
             
-    ```
+    
     """
     from litellm.proxy.proxy_server import prisma_client
 
@@ -504,10 +506,15 @@ async def user_update(
         # get non default values for key
         non_default_values = {}
         for k, v in data_json.items():
-            if v is not None and v not in (
+            if (
-                [],
+                v is not None
-                {},
+                and v
-                0,
+                not in (
+                    [],
+                    {},
+                    0,
+                )
+                and k not in LiteLLM_ManagementEndpoint_MetadataFields
             ):  # models default to [], spend defaults to 0, we should not reset these values
                 non_default_values[k] = v
 
@@ -543,6 +550,8 @@ async def user_update(
                 )
                 non_default_values["budget_reset_at"] = user_reset_at
 
+        non_default_values = prepare_metadata_fields(data, non_default_values)
+
         ## ADD USER, IF NEW ##
         verbose_proxy_logger.debug("/user/update: Received data = %s", data)
         response: Optional[Any] = None

litellm/proxy/management_endpoints/key_management_endpoints.py

@@ -452,12 +452,39 @@ async def generate_key_fn(  # noqa: PLR0915
         raise handle_exception_on_proxy(e)
 
 
+def prepare_metadata_fields(data: BaseModel, non_default_values: dict) -> dict:
+    """
+    Check LiteLLM_ManagementEndpoint_MetadataFields (proxy/_types.py) for fields that are allowed to be updated
+    """
+    non_default_values.setdefault("metadata", {})
+    data_json = data.model_dump(exclude_unset=True)
+    try:
+        for k, v in data_json.items():
+            if k == "model_tpm_limit" or k == "model_rpm_limit":
+                if k not in non_default_values["metadata"]:
+                    non_default_values["metadata"][k] = {}
+                non_default_values["metadata"][k].update(v)
+
+            if k == "tags" or k == "guardrails":
+                if k not in non_default_values["metadata"]:
+                    non_default_values["metadata"][k] = []
+                    non_default_values["metadata"][k].extend(v)
+
+    except Exception as e:
+        verbose_proxy_logger.exception(
+            "litellm.proxy.proxy_server.prepare_metadata_fields(): Exception occured - {}".format(
+                str(e)
+            )
+        )
+    return non_default_values
+
+
 def prepare_key_update_data(
     data: Union[UpdateKeyRequest, RegenerateKeyRequest], existing_key_row
 ):
     data_json: dict = data.model_dump(exclude_unset=True)
     data_json.pop("key", None)
-    _metadata_fields = ["model_rpm_limit", "model_tpm_limit", "guardrails"]
+    _metadata_fields = ["model_rpm_limit", "model_tpm_limit", "guardrails", "tags"]
     non_default_values = {}
     for k, v in data_json.items():
         if k in _metadata_fields:
@@ -483,29 +510,9 @@ def prepare_key_update_data(
             non_default_values["budget_reset_at"] = key_reset_at
             non_default_values["budget_duration"] = budget_duration
 
-    _metadata = existing_key_row.metadata or {}
+    non_default_values = prepare_metadata_fields(
-
+        data=data, non_default_values=non_default_values
-    if data.model_tpm_limit:
+    )
-        if "model_tpm_limit" not in _metadata:
-            _metadata["model_tpm_limit"] = {}
-        _metadata["model_tpm_limit"].update(data.model_tpm_limit)
-        non_default_values["metadata"] = _metadata
-
-    if data.model_rpm_limit:
-        if "model_rpm_limit" not in _metadata:
-            _metadata["model_rpm_limit"] = {}
-        _metadata["model_rpm_limit"].update(data.model_rpm_limit)
-        non_default_values["metadata"] = _metadata
-
-    if data.tags:
-        if "tags" not in _metadata:
-            _metadata["tags"] = []
-        _metadata["tags"].extend(data.tags)
-        non_default_values["metadata"] = _metadata
-
-    if data.guardrails:
-        _metadata["guardrails"] = data.guardrails
-        non_default_values["metadata"] = _metadata
 
     return non_default_values