fix(nvidia_nim/embed.py): add 'dimensions' support (#8302)

* fix(nvidia_nim/embed.py): add 'dimensions' support

Fixes #8238

* fix(proxy_Server.py): initialize router redis cache if setup on proxy

Fixes #6602

* test: add unit testing for new helper function

Author: krrishdholakia

Diff for: litellm/llms/nvidia_nim/embed.py

@@ -58,7 +58,7 @@ def get_config(cls):
     def get_supported_openai_params(
         self,
     ):
-        return ["encoding_format", "user"]
+        return ["encoding_format", "user", "dimensions"]
 
     def map_openai_params(
         self,
@@ -73,6 +73,8 @@ def map_openai_params(
                 optional_params["extra_body"].update({"input_type": v})
             elif k == "truncate":
                 optional_params["extra_body"].update({"truncate": v})
+            else:
+                optional_params[k] = v
 
         if kwargs is not None:
             # pass kwargs in extra_body

Diff for: litellm/proxy/proxy_server.py

@@ -1631,7 +1631,7 @@ def _init_cache(
         self,
         cache_params: dict,
     ):
-        global redis_usage_cache
+        global redis_usage_cache, llm_router
         from litellm import Cache
 
         if "default_in_memory_ttl" in cache_params:
@@ -1646,6 +1646,10 @@ def _init_cache(
             ## INIT PROXY REDIS USAGE CLIENT ##
             redis_usage_cache = litellm.cache.cache
 
+            ## INIT ROUTER REDIS CACHE ##
+            if llm_router is not None:
+                llm_router._update_redis_cache(cache=redis_usage_cache)
+
     async def get_config(self, config_file_path: Optional[str] = None) -> dict:
         """
         Load config file

Diff for: litellm/router.py

@@ -573,6 +573,20 @@ def __init__(  # noqa: PLR0915
             litellm.amoderation, call_type="moderation"
         )
 
+    def _update_redis_cache(self, cache: RedisCache):
+        """
+        Update the redis cache for the router, if none set.
+
+        Allows proxy user to just do
+        ```yaml
+        litellm_settings:
+            cache: true
+        ```
+        and caching to just work.
+        """
+        if self.cache.redis_cache is None:
+            self.cache.redis_cache = cache
+
     def initialize_assistants_endpoint(self):
         ## INITIALIZE PASS THROUGH ASSISTANTS ENDPOINT ##
         self.acreate_assistants = self.factory_function(litellm.acreate_assistants)

Diff for: tests/llm_translation/test_nvidia_nim.py

@@ -77,6 +77,7 @@ def test_embedding_nvidia_nim():
                 model="nvidia_nim/nvidia/nv-embedqa-e5-v5",
                 input="What is the meaning of life?",
                 input_type="passage",
+                dimensions=1024,
                 client=client,
             )
         except Exception as e:
@@ -87,3 +88,4 @@ def test_embedding_nvidia_nim():
         assert request_body["input"] == "What is the meaning of life?"
         assert request_body["model"] == "nvidia/nv-embedqa-e5-v5"
         assert request_body["extra_body"]["input_type"] == "passage"
+        assert request_body["dimensions"] == 1024

Diff for: tests/local_testing/test_router_utils.py

@@ -384,3 +384,15 @@ def test_router_get_model_access_groups(potential_access_group, expected_result)
         model_access_group=potential_access_group
     )
     assert access_groups == expected_result
+
+
+def test_router_redis_cache():
+    router = Router(
+        model_list=[{"model_name": "gemini/*", "litellm_params": {"model": "gemini/*"}}]
+    )
+
+    redis_cache = MagicMock()
+
+    router._update_redis_cache(cache=redis_cache)
+
+    assert router.cache.redis_cache == redis_cache