fix(router): import retry helpers inside their functions to break CodeQL import cycles

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

litellm/router.py

@@ -241,7 +241,6 @@ from litellm.types.router import (
     ModelGroupInfo,
     OptionalPreCallChecks,
     PreRoutingStrategy,
-    RetryAttemptRecord,
     RetryPolicy,
     RouterCacheEnum,
     RouterErrors,
@@ -8362,6 +8361,8 @@ class Router:
         """
         When a retry or fallback happens, record which model group, deployment and attempt just failed and why
         """
+        from litellm.types.router import RetryAttemptRecord
+
         _metadata_var: Final = "litellm_metadata" if "litellm_metadata" in kwargs else "metadata"
         request_metadata: Final[Mapping[str, object]] = kwargs[_metadata_var]
         model_group: Final = kwargs.get("model")

litellm/utils.py

@@ -81,7 +81,7 @@ from litellm.constants import (
     PROVIDERS_THAT_AUTHENTICATE_ON_PROVIDER_INFO,
     TOOL_CHOICE_OBJECT_TOKEN_COUNT,
 )
-from litellm.litellm_core_utils.core_helpers import max_retries_per_request_hit, normalize_drop_params
+from litellm.litellm_core_utils.core_helpers import normalize_drop_params
 from litellm.litellm_core_utils.fallback_generalizations import (
     match_capability_generalizations,
 )
@@ -1500,6 +1500,8 @@ def post_call_processing(
 
 
 def client(original_function):
+    from litellm.litellm_core_utils.core_helpers import max_retries_per_request_hit
+
     Rules: Final = litellm_utils.Rules
     rules_obj: Final = Rules()