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externalize storage object in use protection

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prune listers from admission controller
This commit is contained in:
yue9944882 2018-08-09 21:26:13 +08:00
parent 3817e21c03
commit 3e205cadcc
3 changed files with 1 additions and 39 deletions
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5
plugin/pkg/admission/storage/storageobjectinuseprotection/BUILD
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@ -7,10 +7,7 @@ go_library(
visibility = ["//visibility:public"], visibility = ["//visibility:public"],
deps = [ deps = [
"//pkg/apis/core:go_default_library", "//pkg/apis/core:go_default_library",
"//pkg/client/informers/informers_generated/internalversion:go_default_library",
"//pkg/client/listers/core/internalversion:go_default_library",
"//pkg/features:go_default_library", "//pkg/features:go_default_library",
"//pkg/kubeapiserver/admission:go_default_library",
"//pkg/volume/util:go_default_library", "//pkg/volume/util:go_default_library",
"//staging/src/k8s.io/apiserver/pkg/admission:go_default_library", "//staging/src/k8s.io/apiserver/pkg/admission:go_default_library",
"//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library", "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
@ -24,8 +21,6 @@ go_test(
embed = [":go_default_library"], embed = [":go_default_library"],
deps = [ deps = [
"//pkg/apis/core:go_default_library", "//pkg/apis/core:go_default_library",
"//pkg/client/informers/informers_generated/internalversion:go_default_library",
"//pkg/controller:go_default_library",
"//pkg/volume/util:go_default_library", "//pkg/volume/util:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library", "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library", "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",

31
plugin/pkg/admission/storage/storageobjectinuseprotection/admission.go
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@ -17,18 +17,14 @@ limitations under the License.
package storageobjectinuseprotection package storageobjectinuseprotection
import ( import (
"fmt"
"io" "io"
"github.com/golang/glog" "github.com/golang/glog"
admission "k8s.io/apiserver/pkg/admission" "k8s.io/apiserver/pkg/admission"
"k8s.io/apiserver/pkg/util/feature" "k8s.io/apiserver/pkg/util/feature"
api "k8s.io/kubernetes/pkg/apis/core" api "k8s.io/kubernetes/pkg/apis/core"
informers "k8s.io/kubernetes/pkg/client/informers/informers_generated/internalversion"
corelisters "k8s.io/kubernetes/pkg/client/listers/core/internalversion"
"k8s.io/kubernetes/pkg/features" "k8s.io/kubernetes/pkg/features"
kubeapiserveradmission "k8s.io/kubernetes/pkg/kubeapiserver/admission"
volumeutil "k8s.io/kubernetes/pkg/volume/util" volumeutil "k8s.io/kubernetes/pkg/volume/util"
) )
@ -48,13 +44,9 @@ func Register(plugins *admission.Plugins) {
// storageProtectionPlugin holds state for and implements the admission plugin. // storageProtectionPlugin holds state for and implements the admission plugin.
type storageProtectionPlugin struct { type storageProtectionPlugin struct {
*admission.Handler *admission.Handler
pvcLister corelisters.PersistentVolumeClaimLister
pvLister corelisters.PersistentVolumeLister
} }
var _ admission.Interface = &storageProtectionPlugin{} var _ admission.Interface = &storageProtectionPlugin{}
var _ = kubeapiserveradmission.WantsInternalKubeInformerFactory(&storageProtectionPlugin{})
// newPlugin creates a new admission plugin. // newPlugin creates a new admission plugin.
func newPlugin() *storageProtectionPlugin { func newPlugin() *storageProtectionPlugin {
@ -63,27 +55,6 @@ func newPlugin() *storageProtectionPlugin {
} }
} }
func (c *storageProtectionPlugin) SetInternalKubeInformerFactory(f informers.SharedInformerFactory) {
pvcInformer := f.Core().InternalVersion().PersistentVolumeClaims()
c.pvcLister = pvcInformer.Lister()
pvInformer := f.Core().InternalVersion().PersistentVolumes()
c.pvLister = pvInformer.Lister()
c.SetReadyFunc(func() bool {
return pvcInformer.Informer().HasSynced() && pvInformer.Informer().HasSynced()
})
}
// ValidateInitialization ensures lister is set.
func (c *storageProtectionPlugin) ValidateInitialization() error {
if c.pvcLister == nil {
return fmt.Errorf("missing PVC lister")
}
if c.pvLister == nil {
return fmt.Errorf("missing PV lister")
}
return nil
}
var ( var (
pvResource = api.Resource("persistentvolumes") pvResource = api.Resource("persistentvolumes")
pvcResource = api.Resource("persistentvolumeclaims") pvcResource = api.Resource("persistentvolumeclaims")

4
plugin/pkg/admission/storage/storageobjectinuseprotection/admission_test.go
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@ -29,8 +29,6 @@ import (
"k8s.io/apiserver/pkg/admission" "k8s.io/apiserver/pkg/admission"
"k8s.io/apiserver/pkg/util/feature" "k8s.io/apiserver/pkg/util/feature"
api "k8s.io/kubernetes/pkg/apis/core" api "k8s.io/kubernetes/pkg/apis/core"
informers "k8s.io/kubernetes/pkg/client/informers/informers_generated/internalversion"
"k8s.io/kubernetes/pkg/controller"
volumeutil "k8s.io/kubernetes/pkg/volume/util" volumeutil "k8s.io/kubernetes/pkg/volume/util"
) )
@ -118,8 +116,6 @@ func TestAdmit(t *testing.T) {
} }
ctrl := newPlugin() ctrl := newPlugin()
informerFactory := informers.NewSharedInformerFactory(nil, controller.NoResyncPeriodFunc())
ctrl.SetInternalKubeInformerFactory(informerFactory)
for _, test := range tests { for _, test := range tests {
feature.DefaultFeatureGate.Set(fmt.Sprintf("StorageObjectInUseProtection=%v", test.featureEnabled)) feature.DefaultFeatureGate.Set(fmt.Sprintf("StorageObjectInUseProtection=%v", test.featureEnabled))