add caBundle for conversion webhook

Signed-off-by: Kuromesi <blackfacepan@163.com>

api/addtoscheme_v1alpha1.go

@@ -0,0 +1,26 @@
+/*
+Copyright 2019 The Kruise 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 apis
+
+import (
+	"github.com/openkruise/rollouts/api/v1alpha1"
+)
+
+func init() {
+	// Register the types with the Scheme so the components can map objects to GroupVersionKinds and back
+	AddToSchemes = append(AddToSchemes, v1alpha1.SchemeBuilder.AddToScheme)
+}

api/apis.go

@@ -0,0 +1,29 @@
+/*
+Copyright 2020 The Kruise 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 apis
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+// AddToSchemes may be used to add all resources defined in the project to a Scheme
+var AddToSchemes runtime.SchemeBuilder
+
+// AddToScheme adds all Resources to the Scheme
+func AddToScheme(s *runtime.Scheme) error {
+	return AddToSchemes.AddToScheme(s)
+}

pkg/webhook/server.go

@@ -29,6 +29,7 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/manager"
 	"sigs.k8s.io/controller-runtime/pkg/webhook"
 	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/conversion"
 )
 
 type GateFunc func() (enabled bool)
@@ -90,7 +91,7 @@ func SetupWithManager(mgr manager.Manager) error {
 		server.Register(path, &webhook.Admission{Handler: handler})
 		klog.V(3).Infof("Registered webhook handler %s", path)
 	}
-
+	server.Register("/convert", &conversion.Webhook{})
 	err := initialize(context.TODO(), mgr.GetConfig())
 	if err != nil {
 		return err

pkg/webhook/util/controller/webhook_controller.go

@@ -24,6 +24,7 @@ import (
 
 	webhookutil "github.com/openkruise/rollouts/pkg/webhook/util"
 	"github.com/openkruise/rollouts/pkg/webhook/util/configuration"
+	"github.com/openkruise/rollouts/pkg/webhook/util/crd"
 	"github.com/openkruise/rollouts/pkg/webhook/util/generator"
 	"github.com/openkruise/rollouts/pkg/webhook/util/writer"
 	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
@@ -266,6 +267,10 @@ func (c *Controller) sync() error {
 		return fmt.Errorf("failed to ensure configuration: %v", err)
 	}
 
+	if err := crd.Ensure(c.crdClient, c.crdLister, certs.CACert); err != nil {
+		return fmt.Errorf("failed to ensure crd: %v", err)
+	}
+
 	onceInit.Do(func() {
 		close(uninit)
 	})

pkg/webhook/util/crd/crd.go

@@ -0,0 +1,87 @@
+/*
+Copyright 2020 The Kruise 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 crd
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+
+	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
+	apiextensionsclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
+	apiextensionslisters "k8s.io/apiextensions-apiserver/pkg/client/listers/apiextensions/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+
+	apis "github.com/openkruise/rollouts/api"
+	webhookutil "github.com/openkruise/rollouts/pkg/webhook/util"
+)
+
+var (
+	kruiseScheme = runtime.NewScheme()
+)
+
+func init() {
+	_ = apis.AddToScheme(kruiseScheme)
+}
+
+func Ensure(client apiextensionsclientset.Interface, lister apiextensionslisters.CustomResourceDefinitionLister, caBundle []byte) error {
+	crdList, err := lister.List(labels.Everything())
+	if err != nil {
+		return fmt.Errorf("failed to list crds: %v", err)
+	}
+
+	webhookConfig := apiextensionsv1.WebhookClientConfig{
+		CABundle: caBundle,
+	}
+	path := "/convert"
+	if host := webhookutil.GetHost(); len(host) > 0 {
+		url := fmt.Sprintf("https://%s:%d%s", host, webhookutil.GetPort(), path)
+		webhookConfig.URL = &url
+	} else {
+		var port int32 = 443
+		webhookConfig.Service = &apiextensionsv1.ServiceReference{
+			Namespace: webhookutil.GetNamespace(),
+			Name:      webhookutil.GetServiceName(),
+			Port:      &port,
+			Path:      &path,
+		}
+	}
+
+	for _, crd := range crdList {
+		if len(crd.Spec.Versions) == 0 || crd.Spec.Conversion == nil || crd.Spec.Conversion.Strategy != apiextensionsv1.WebhookConverter {
+			continue
+		}
+		if !kruiseScheme.Recognizes(schema.GroupVersionKind{Group: crd.Spec.Group, Version: crd.Spec.Versions[0].Name, Kind: crd.Spec.Names.Kind}) {
+			continue
+		}
+
+		if crd.Spec.Conversion.Webhook == nil || !reflect.DeepEqual(crd.Spec.Conversion.Webhook.ClientConfig, webhookConfig) {
+			newCRD := crd.DeepCopy()
+			newCRD.Spec.Conversion.Webhook = &apiextensionsv1.WebhookConversion{
+				ClientConfig:             webhookConfig.DeepCopy(),
+				ConversionReviewVersions: []string{"v1", "v1beta1"},
+			}
+			if _, err := client.ApiextensionsV1().CustomResourceDefinitions().Update(context.TODO(), newCRD, metav1.UpdateOptions{}); err != nil {
+				return fmt.Errorf("failed to update CRD %s: %v", newCRD.Name, err)
+			}
+		}
+	}
+	return nil
+}