feat: add crd gen

Signed-off-by: runzexia <runzexia@yunify.com>

vendor/k8s.io/apiserver/pkg/admission/configuration/initializer_manager.go

@@ -0,0 +1,88 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package configuration
+
+import (
+	"fmt"
+	"reflect"
+	"sort"
+
+	"k8s.io/klog"
+
+	"k8s.io/api/admissionregistration/v1alpha1"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+type InitializerConfigurationLister interface {
+	List(opts metav1.ListOptions) (*v1alpha1.InitializerConfigurationList, error)
+}
+
+type InitializerConfigurationManager struct {
+	*poller
+}
+
+func NewInitializerConfigurationManager(c InitializerConfigurationLister) *InitializerConfigurationManager {
+	getFn := func() (runtime.Object, error) {
+		list, err := c.List(metav1.ListOptions{})
+		if err != nil {
+			if errors.IsNotFound(err) || errors.IsForbidden(err) {
+				klog.V(5).Infof("Initializers are disabled due to an error: %v", err)
+				return nil, ErrDisabled
+			}
+			return nil, err
+		}
+		return mergeInitializerConfigurations(list), nil
+	}
+	return &InitializerConfigurationManager{
+		newPoller(getFn),
+	}
+}
+
+// Initializers returns the merged InitializerConfiguration.
+func (im *InitializerConfigurationManager) Initializers() (*v1alpha1.InitializerConfiguration, error) {
+	configuration, err := im.poller.configuration()
+	if err != nil {
+		return nil, err
+	}
+	initializerConfiguration, ok := configuration.(*v1alpha1.InitializerConfiguration)
+	if !ok {
+		return nil, fmt.Errorf("expected type %v, got type %v", reflect.TypeOf(initializerConfiguration), reflect.TypeOf(configuration))
+	}
+	return initializerConfiguration, nil
+}
+
+func (im *InitializerConfigurationManager) Run(stopCh <-chan struct{}) {
+	im.poller.Run(stopCh)
+}
+
+func mergeInitializerConfigurations(initializerConfigurationList *v1alpha1.InitializerConfigurationList) *v1alpha1.InitializerConfiguration {
+	configurations := initializerConfigurationList.Items
+	sort.SliceStable(configurations, InitializerConfigurationSorter(configurations).ByName)
+	var ret v1alpha1.InitializerConfiguration
+	for _, c := range configurations {
+		ret.Initializers = append(ret.Initializers, c.Initializers...)
+	}
+	return &ret
+}
+
+type InitializerConfigurationSorter []v1alpha1.InitializerConfiguration
+
+func (a InitializerConfigurationSorter) ByName(i, j int) bool {
+	return a[i].Name < a[j].Name
+}