feat: add ClusterClass support

Author: aamoyel

api/v1alpha1/kubevirtclustertemplate_types.go

@@ -0,0 +1,57 @@
+/*
+Copyright 2021 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 v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1"
+)
+
+// KubevirtClusterTemplateResource describes the data needed to create a KubevirtCluster from a template.
+type KubevirtClusterTemplateResource struct {
+	ObjectMeta clusterv1.ObjectMeta `json:"metadata,omitempty"`
+	Spec KubevirtClusterSpec `json:"spec"`
+}
+
+// KubevirtClusterTemplateSpec defines the desired state of KubevirtClusterTemplate.
+type KubevirtClusterTemplateSpec struct {
+	Template KubevirtClusterTemplateResource `json:"template"`
+}
+
+// +kubebuilder:object:root=true
+// +kubebuilder:resource:path=kubevirtclustertemplates,scope=Namespaced,categories=cluster-api,shortName=kct
+
+// KubevirtClusterTemplate is the Schema for the kubevirtclustertemplates API.
+type KubevirtClusterTemplate struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec KubevirtClusterTemplateSpec `json:"spec,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+
+// KubevirtClusterTemplateList contains a list of KubevirtClusterTemplates.
+type KubevirtClusterTemplateList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []KubevirtClusterTemplate `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&KubevirtClusterTemplate{}, &KubevirtClusterTemplateList{})
+}

api/v1alpha1/kubevirtclustertemplate_webhook.go

@@ -0,0 +1,57 @@
+/*
+Copyright 2023 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 v1alpha1
+
+import (
+	"errors"
+	"reflect"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/webhook"
+)
+
+const kubevirtClusterTemplateImmutableMsg = "KubevirtClusterTemplate spec.template.spec field is immutable. Please create new resource instead."
+
+func (m *KubevirtClusterTemplate) SetupWebhookWithManager(mgr ctrl.Manager) error {
+	return ctrl.NewWebhookManagedBy(mgr).
+		For(m).
+		Complete()
+}
+
+// +kubebuilder:webhook:verbs=create;update,path=/validate-infrastructure-cluster-x-k8s-io-v1alpha1-kubevirtclustertemplate,mutating=false,failurePolicy=fail,matchPolicy=Equivalent,groups=infrastructure.cluster.x-k8s.io,resources=kubevirtclustertemplates,versions=v1alpha1,name=validation.kubevirtclustertemplate.infrastructure.cluster.x-k8s.io,sideEffects=None,admissionReviewVersions=v1beta1
+
+var _ webhook.Validator = &KubevirtClusterTemplate{}
+
+// ValidateCreate implements webhook.Validator so a webhook will be registered for the type.
+func (m *KubevirtClusterTemplate) ValidateCreate() error {
+	return nil
+}
+
+// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type.
+func (m *KubevirtClusterTemplate) ValidateUpdate(old runtime.Object) error {
+	oldCRS := old.(*KubevirtClusterTemplate)
+	if !reflect.DeepEqual(m.Spec, oldCRS.Spec) {
+		return errors.New(kubevirtClusterTemplateImmutableMsg)
+	}
+	return nil
+}
+
+// ValidateDelete implements webhook.Validator so a webhook will be registered for the type.
+func (m *KubevirtClusterTemplate) ValidateDelete() error {
+	return nil
+}