feat: add crd gen

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

vendor/k8s.io/apiserver/pkg/admission/plugin/webhook/validating/dispatcher.go

@@ -0,0 +1,134 @@
+/*
+Copyright 2018 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 validating
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+
+	"k8s.io/klog"
+
+	admissionv1beta1 "k8s.io/api/admission/v1beta1"
+	"k8s.io/api/admissionregistration/v1beta1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	admissionmetrics "k8s.io/apiserver/pkg/admission/metrics"
+	webhookerrors "k8s.io/apiserver/pkg/admission/plugin/webhook/errors"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/generic"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/request"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/util"
+	"k8s.io/apiserver/pkg/util/webhook"
+)
+
+type validatingDispatcher struct {
+	cm *webhook.ClientManager
+}
+
+func newValidatingDispatcher(cm *webhook.ClientManager) generic.Dispatcher {
+	return &validatingDispatcher{cm}
+}
+
+var _ generic.Dispatcher = &validatingDispatcher{}
+
+func (d *validatingDispatcher) Dispatch(ctx context.Context, attr *generic.VersionedAttributes, relevantHooks []*v1beta1.Webhook) error {
+	wg := sync.WaitGroup{}
+	errCh := make(chan error, len(relevantHooks))
+	wg.Add(len(relevantHooks))
+	for i := range relevantHooks {
+		go func(hook *v1beta1.Webhook) {
+			defer wg.Done()
+
+			t := time.Now()
+			err := d.callHook(ctx, hook, attr)
+			admissionmetrics.Metrics.ObserveWebhook(time.Since(t), err != nil, attr.Attributes, "validating", hook.Name)
+			if err == nil {
+				return
+			}
+
+			ignoreClientCallFailures := hook.FailurePolicy != nil && *hook.FailurePolicy == v1beta1.Ignore
+			if callErr, ok := err.(*webhook.ErrCallingWebhook); ok {
+				if ignoreClientCallFailures {
+					klog.Warningf("Failed calling webhook, failing open %v: %v", hook.Name, callErr)
+					utilruntime.HandleError(callErr)
+					return
+				}
+
+				klog.Warningf("Failed calling webhook, failing closed %v: %v", hook.Name, err)
+				errCh <- apierrors.NewInternalError(err)
+				return
+			}
+
+			klog.Warningf("rejected by webhook %q: %#v", hook.Name, err)
+			errCh <- err
+		}(relevantHooks[i])
+	}
+	wg.Wait()
+	close(errCh)
+
+	var errs []error
+	for e := range errCh {
+		errs = append(errs, e)
+	}
+	if len(errs) == 0 {
+		return nil
+	}
+	if len(errs) > 1 {
+		for i := 1; i < len(errs); i++ {
+			// TODO: merge status errors; until then, just return the first one.
+			utilruntime.HandleError(errs[i])
+		}
+	}
+	return errs[0]
+}
+
+func (d *validatingDispatcher) callHook(ctx context.Context, h *v1beta1.Webhook, attr *generic.VersionedAttributes) error {
+	if attr.IsDryRun() {
+		if h.SideEffects == nil {
+			return &webhook.ErrCallingWebhook{WebhookName: h.Name, Reason: fmt.Errorf("Webhook SideEffects is nil")}
+		}
+		if !(*h.SideEffects == v1beta1.SideEffectClassNone || *h.SideEffects == v1beta1.SideEffectClassNoneOnDryRun) {
+			return webhookerrors.NewDryRunUnsupportedErr(h.Name)
+		}
+	}
+
+	// Make the webhook request
+	request := request.CreateAdmissionReview(attr)
+	client, err := d.cm.HookClient(util.HookClientConfigForWebhook(h))
+	if err != nil {
+		return &webhook.ErrCallingWebhook{WebhookName: h.Name, Reason: err}
+	}
+	response := &admissionv1beta1.AdmissionReview{}
+	if err := client.Post().Context(ctx).Body(&request).Do().Into(response); err != nil {
+		return &webhook.ErrCallingWebhook{WebhookName: h.Name, Reason: err}
+	}
+
+	if response.Response == nil {
+		return &webhook.ErrCallingWebhook{WebhookName: h.Name, Reason: fmt.Errorf("Webhook response was absent")}
+	}
+	for k, v := range response.Response.AuditAnnotations {
+		key := h.Name + "/" + k
+		if err := attr.AddAnnotation(key, v); err != nil {
+			klog.Warningf("Failed to set admission audit annotation %s to %s for validating webhook %s: %v", key, v, h.Name, err)
+		}
+	}
+	if response.Response.Allowed {
+		return nil
+	}
+	return webhookerrors.ToStatusErr(h.Name, response.Response.Result)
+}

vendor/k8s.io/apiserver/pkg/admission/plugin/webhook/validating/doc.go

@@ -0,0 +1,19 @@
+/*
+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 validating makes calls to validating (i.e., non-mutating) webhooks
+// during the admission process.
+package validating // import "k8s.io/apiserver/pkg/admission/plugin/webhook/validating"

vendor/k8s.io/apiserver/pkg/admission/plugin/webhook/validating/plugin.go

@@ -0,0 +1,64 @@
+/*
+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 validating
+
+import (
+	"io"
+
+	"k8s.io/apiserver/pkg/admission"
+	"k8s.io/apiserver/pkg/admission/configuration"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/generic"
+)
+
+const (
+	// PluginName indicates the name of admission plug-in
+	PluginName = "ValidatingAdmissionWebhook"
+)
+
+// Register registers a plugin
+func Register(plugins *admission.Plugins) {
+	plugins.Register(PluginName, func(configFile io.Reader) (admission.Interface, error) {
+		plugin, err := NewValidatingAdmissionWebhook(configFile)
+		if err != nil {
+			return nil, err
+		}
+
+		return plugin, nil
+	})
+}
+
+// Plugin is an implementation of admission.Interface.
+type Plugin struct {
+	*generic.Webhook
+}
+
+var _ admission.ValidationInterface = &Plugin{}
+
+// NewValidatingAdmissionWebhook returns a generic admission webhook plugin.
+func NewValidatingAdmissionWebhook(configFile io.Reader) (*Plugin, error) {
+	handler := admission.NewHandler(admission.Connect, admission.Create, admission.Delete, admission.Update)
+	webhook, err := generic.NewWebhook(handler, configFile, configuration.NewValidatingWebhookConfigurationManager, newValidatingDispatcher)
+	if err != nil {
+		return nil, err
+	}
+	return &Plugin{webhook}, nil
+}
+
+// Validate makes an admission decision based on the request attributes.
+func (a *Plugin) Validate(attr admission.Attributes) error {
+	return a.Webhook.Dispatch(attr)
+}