feat: add crd gen

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

vendor/k8s.io/apiserver/plugin/pkg/audit/webhook/webhook.go

@@ -0,0 +1,104 @@
+/*
+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 webhook implements the audit.Backend interface using HTTP webhooks.
+package webhook
+
+import (
+	"fmt"
+	"time"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	auditinternal "k8s.io/apiserver/pkg/apis/audit"
+	"k8s.io/apiserver/pkg/apis/audit/install"
+	"k8s.io/apiserver/pkg/audit"
+	"k8s.io/apiserver/pkg/util/webhook"
+	"k8s.io/client-go/rest"
+)
+
+const (
+	// PluginName is the name of this plugin, to be used in help and logs.
+	PluginName = "webhook"
+
+	// DefaultInitialBackoff is the default amount of time to wait before
+	// retrying sending audit events through a webhook.
+	DefaultInitialBackoff = 10 * time.Second
+)
+
+func init() {
+	install.Install(audit.Scheme)
+}
+
+func loadWebhook(configFile string, groupVersion schema.GroupVersion, initialBackoff time.Duration) (*webhook.GenericWebhook, error) {
+	return webhook.NewGenericWebhook(audit.Scheme, audit.Codecs, configFile,
+		[]schema.GroupVersion{groupVersion}, initialBackoff)
+}
+
+type backend struct {
+	w    *webhook.GenericWebhook
+	name string
+}
+
+// NewDynamicBackend returns an audit backend configured from a REST client that
+// sends events over HTTP to an external service.
+func NewDynamicBackend(rc *rest.RESTClient, initialBackoff time.Duration) audit.Backend {
+	return &backend{
+		w: &webhook.GenericWebhook{
+			RestClient:     rc,
+			InitialBackoff: initialBackoff,
+		},
+		name: fmt.Sprintf("dynamic_%s", PluginName),
+	}
+}
+
+// NewBackend returns an audit backend that sends events over HTTP to an external service.
+func NewBackend(kubeConfigFile string, groupVersion schema.GroupVersion, initialBackoff time.Duration) (audit.Backend, error) {
+	w, err := loadWebhook(kubeConfigFile, groupVersion, initialBackoff)
+	if err != nil {
+		return nil, err
+	}
+	return &backend{w: w, name: PluginName}, nil
+}
+
+func (b *backend) Run(stopCh <-chan struct{}) error {
+	return nil
+}
+
+func (b *backend) Shutdown() {
+	// nothing to do here
+}
+
+func (b *backend) ProcessEvents(ev ...*auditinternal.Event) bool {
+	if err := b.processEvents(ev...); err != nil {
+		audit.HandlePluginError(b.String(), err, ev...)
+		return false
+	}
+	return true
+}
+
+func (b *backend) processEvents(ev ...*auditinternal.Event) error {
+	var list auditinternal.EventList
+	for _, e := range ev {
+		list.Items = append(list.Items, *e)
+	}
+	return b.w.WithExponentialBackoff(func() rest.Result {
+		return b.w.RestClient.Post().Body(&list).Do()
+	}).Error()
+}
+
+func (b *backend) String() string {
+	return b.name
+}