add type assertions to admission plugins

plugin/pkg/admission/defaulttolerationseconds/admission.go

@@ -55,6 +55,8 @@ type Plugin struct {
 	*admission.Handler
 }
 
+var _ admission.MutationInterface = &Plugin{}
+
 // NewDefaultTolerationSeconds creates a new instance of the DefaultTolerationSeconds admission controller
 func NewDefaultTolerationSeconds() *Plugin {
 	return &Plugin{

plugin/pkg/admission/initialresources/admission.go

@@ -64,6 +64,8 @@ type InitialResources struct {
 	nsOnly     bool
 }
 
+var _ admission.MutationInterface = &InitialResources{}
+
 func newInitialResources(source dataSource, percentile int64, nsOnly bool) *InitialResources {
 	return &InitialResources{
 		Handler:    admission.NewHandler(admission.Create),

plugin/pkg/admission/namespace/autoprovision/admission.go

@@ -46,6 +46,7 @@ type Provision struct {
 	namespaceLister corelisters.NamespaceLister
 }
 
+var _ admission.MutationInterface = &Provision{}
 var _ = kubeapiserveradmission.WantsInternalKubeInformerFactory(&Provision{})
 var _ = kubeapiserveradmission.WantsInternalKubeClientSet(&Provision{})
 

plugin/pkg/admission/persistentvolume/label/admission.go

@@ -52,6 +52,7 @@ type persistentVolumeLabel struct {
 	gceCloudProvider *gce.GCECloud
 }
 
+var _ admission.MutationInterface = &persistentVolumeLabel{}
 var _ kubeapiserveradmission.WantsCloudConfig = &persistentVolumeLabel{}
 
 // NewPersistentVolumeLabel returns an admission.Interface implementation which adds labels to PersistentVolume CREATE requests,

plugin/pkg/admission/podpreset/admission.go

@@ -59,6 +59,7 @@ type podPresetPlugin struct {
 	lister settingslisters.PodPresetLister
 }
 
+var _ admission.MutationInterface = &podPresetPlugin{}
 var _ = kubeapiserveradmission.WantsInternalKubeInformerFactory(&podPresetPlugin{})
 var _ = kubeapiserveradmission.WantsInternalKubeClientSet(&podPresetPlugin{})
 

plugin/pkg/admission/podtolerationrestriction/admission.go

@@ -57,6 +57,8 @@ const (
 	NSWLTolerations      string = "scheduler.alpha.kubernetes.io/tolerationsWhitelist"
 )
 
+var _ admission.MutationInterface = &podTolerationsPlugin{}
+var _ admission.ValidationInterface = &podTolerationsPlugin{}
 var _ = kubeapiserveradmission.WantsInternalKubeInformerFactory(&podTolerationsPlugin{})
 
 type podTolerationsPlugin struct {

plugin/pkg/admission/storageclass/setdefault/admission.go

@@ -54,6 +54,7 @@ type claimDefaulterPlugin struct {
 }
 
 var _ admission.Interface = &claimDefaulterPlugin{}
+var _ admission.MutationInterface = &claimDefaulterPlugin{}
 var _ = kubeapiserveradmission.WantsInternalKubeInformerFactory(&claimDefaulterPlugin{})
 
 // newPlugin creates a new admission plugin.