fix: set correct component type in agg planner (#7176)

Signed-off-by: hongkuanz <hongkuanz@nvidia.com>

components/src/dynamo/planner/utils/agg_planner.py

@@ -64,9 +64,8 @@ class AggPlanner:
             shared_state=self.shared_state,
             prometheus_metrics=prometheus_metrics,
             start_prometheus_server=True,
+            component_type=SubComponentType.DECODE,
         )
-        # Override: agg planner uses component_type DECODE for metrics fetching
-        self.planner.component_type = SubComponentType.DECODE
 
         # Create both regression models (agg needs both TTFT and ITL)
         self.ttft_regression = LoadBasedRegressionModel(

components/src/dynamo/planner/utils/planner_core.py

@@ -257,7 +257,11 @@ class BasePlanner:
         prometheus_engine_client: Optional[DirectRouterMetricsClient] = None,
         connector=None,
         start_prometheus_server: bool = True,
+        component_type: Optional[SubComponentType] = None,
     ):
+        if component_type is not None:
+            self.component_type = component_type
+
         self.config = config
         self.dryrun = dryrun
         self.shared_state = shared_state or PlannerSharedState()