From 6af74f6594c9e8607251b11e17859b77ed2dff11 Mon Sep 17 00:00:00 2001 From: Sameer Kankute Date: Thu, 19 Mar 2026 15:39:35 +0530 Subject: [PATCH] fix(router): restore debug log for missing deployment_model_name; warn on unknown affinity flags Co-Authored-By: Claude Haiku 4.5 --- .../pre_call_checks/deployment_affinity_check.py | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/litellm/router_utils/pre_call_checks/deployment_affinity_check.py b/litellm/router_utils/pre_call_checks/deployment_affinity_check.py index 08da7d392d7..728e689eaab 100644 --- a/litellm/router_utils/pre_call_checks/deployment_affinity_check.py +++ b/litellm/router_utils/pre_call_checks/deployment_affinity_check.py @@ -38,6 +38,9 @@ class DeploymentAffinityCheck(CustomLogger): """ CACHE_KEY_PREFIX = "deployment_affinity:v1" + VALID_FLAGS = frozenset( + {"deployment_affinity", "responses_api_deployment_check", "session_affinity"} + ) def __init__( self, @@ -57,6 +60,15 @@ class DeploymentAffinityCheck(CustomLogger): self.model_group_affinity_config: Dict[str, List[str]] = ( model_group_affinity_config or {} ) + for group, flags in self.model_group_affinity_config.items(): + unknown = set(flags) - self.VALID_FLAGS + if unknown: + verbose_router_logger.warning( + "DeploymentAffinityCheck: unknown flag(s) %s for model group '%s'; will be ignored. Valid flags: %s", + unknown, + group, + self.VALID_FLAGS, + ) def _get_effective_flags( self, model_group: str @@ -440,6 +452,9 @@ class DeploymentAffinityCheck(CustomLogger): break if not deployment_model_name: + verbose_router_logger.debug( + "DeploymentAffinityCheck: deployment_model_name missing in metadata; skipping affinity cache update." + ) return None # Resolve effective flags for this model group