improve IAM module

Signed-off-by: hongming <talonwan@yunify.com>

vendor/k8s.io/apiserver/pkg/admission/initializer/initializer.go

@@ -21,25 +21,30 @@ import (
 	"k8s.io/apiserver/pkg/authorization/authorizer"
 	"k8s.io/client-go/informers"
 	"k8s.io/client-go/kubernetes"
+	"k8s.io/component-base/featuregate"
 )
 
 type pluginInitializer struct {
 	externalClient    kubernetes.Interface
 	externalInformers informers.SharedInformerFactory
 	authorizer        authorizer.Authorizer
+	featureGates      featuregate.FeatureGate
 }
 
 // New creates an instance of admission plugins initializer.
-// TODO(p0lyn0mial): make the parameters public, this construction seems to be redundant.
+// This constructor is public with a long param list so that callers immediately know that new information can be expected
+// during compilation when they update a level.
 func New(
 	extClientset kubernetes.Interface,
 	extInformers informers.SharedInformerFactory,
 	authz authorizer.Authorizer,
+	featureGates featuregate.FeatureGate,
 ) pluginInitializer {
 	return pluginInitializer{
 		externalClient:    extClientset,
 		externalInformers: extInformers,
 		authorizer:        authz,
+		featureGates:      featureGates,
 	}
 }
 
@@ -57,6 +62,10 @@ func (i pluginInitializer) Initialize(plugin admission.Interface) {
 	if wants, ok := plugin.(WantsAuthorizer); ok {
 		wants.SetAuthorizer(i.authorizer)
 	}
+
+	if wants, ok := plugin.(WantsFeatures); ok {
+		wants.InspectFeatureGates(i.featureGates)
+	}
 }
 
 var _ admission.PluginInitializer = pluginInitializer{}