Added registration of FeatureGates

Signed-off-by: Shmuel Kallner <[email protected]>

Author: shmuelk

cmd/epp/runner/runner.go

@@ -317,6 +317,8 @@ func (r *Runner) parseConfiguration(ctx context.Context) (*config.Config, error)
 		}
 	}
 
+	loader.RegisterFeatureGate(datalayer.FeatureGate)
+
 	r.registerInTreePlugins()
 	handle := plugins.NewEppHandle(ctx)
 	cfg, err := loader.LoadConfig(configBytes, handle, logger)

pkg/epp/config/loader/configloader.go

@@ -36,6 +36,8 @@ import (
 
 var scheme = runtime.NewScheme()
 
+var registeredFeatureGates = map[string]struct{}{}
+
 func init() {
 	utilruntime.Must(configapi.Install(scheme))
 }
@@ -207,3 +209,9 @@ func validateSchedulingProfiles(config *configapi.EndpointPickerConfig) error {
 	}
 	return nil
 }
+
+// RegisterFeatureGate registers feature gate keys for validation
+func RegisterFeatureGate(gate string) {
+	registeredFeatureGates[gate] = struct{}{}
+}
+

pkg/epp/datalayer/factory.go

@@ -28,6 +28,10 @@ import (
 	v1 "sigs.k8s.io/gateway-api-inference-extension/api/v1"
 )
 
+const (
+	FeatureGate = "dataLayer"
+)
+
 // PoolInfo represents the DataStore information needed for endpoints.
 // TODO:
 // Consider if to remove/simplify in follow-ups. This is mostly for backward