GCPCluster template CRD added

PROJECT

@@ -20,3 +20,6 @@ resources:
 - group: infrastructure
   version: v1alpha4
   kind: GCPMachineTemplate
+- group: infrastructure
+  version: v1alpha4
+  kind: GCPClusterTemplate

api/v1alpha4/gcpclustertemplate_types.go

@@ -0,0 +1,56 @@
+/*
+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 v1alpha4
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// GCPClusterTemplateSpec defines the desired state of GCPClusterTemplate.
+type GCPClusterTemplateSpec struct {
+	Template GCPClusterTemplateResource `json:"template"`
+}
+
+// GCPClusterTemplateResource contains spec for GCPClusterSpec.
+type GCPClusterTemplateResource struct {
+	Spec GCPClusterSpec `json:"spec"`
+}
+
+//+kubebuilder:object:root=true
+//+kubebuilder:resource:path=gcpclustertemplates,scope=Namespaced,categories=cluster-api,shortName=gcpct
+//+kubebuilder:storageversion
+
+// GCPClusterTemplate is the Schema for the gcpclustertemplates API.
+type GCPClusterTemplate struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec GCPClusterTemplateSpec `json:"spec,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// GCPClusterTemplateList contains a list of GCPClusterTemplate.
+type GCPClusterTemplateList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []GCPClusterTemplate `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&GCPClusterTemplate{}, &GCPClusterTemplateList{})
+}

api/v1alpha4/gcpclustertemplate_webhook.go

@@ -0,0 +1,76 @@
+/*
+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 v1alpha4
+
+import (
+	"fmt"
+	"reflect"
+
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/runtime"
+	ctrl "sigs.k8s.io/controller-runtime"
+	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/webhook"
+)
+
+// log is for logging in this package.
+var gcpclustertemplatelog = logf.Log.WithName("gcpclustertemplate-resource")
+
+func (r *GCPClusterTemplate) SetupWebhookWithManager(mgr ctrl.Manager) error {
+	return ctrl.NewWebhookManagedBy(mgr).
+		For(r).
+		Complete()
+}
+
+//+kubebuilder:webhook:verbs=create;update,path=/mutate-infrastructure-cluster-x-k8s-io-v1alpha4-gcpclustertemplate,mutating=true,failurePolicy=fail,matchPolicy=Equivalent,groups=infrastructure.cluster.x-k8s.io,resources=gcpclustertemplates,versions=v1alpha4,name=default.gcpclustertemplate.infrastructure.cluster.x-k8s.io,sideEffects=None,admissionReviewVersions=v1beta1
+
+var _ webhook.Defaulter = &GCPClusterTemplate{}
+
+// Default implements webhook.Defaulter so a webhook will be registered for the type.
+func (r *GCPClusterTemplate) Default() {
+	gcpclustertemplatelog.Info("default", "name", r.Name)
+}
+
+//+kubebuilder:webhook:verbs=create;update,path=/validate-infrastructure-cluster-x-k8s-io-v1alpha4-gcpclustertemplate,mutating=false,failurePolicy=fail,matchPolicy=Equivalent,groups=infrastructure.cluster.x-k8s.io,resources=gcpclustertemplates,versions=v1alpha4,name=validation.gcpclustertemplate.infrastructure.cluster.x-k8s.io,sideEffects=None,admissionReviewVersions=v1beta1
+
+var _ webhook.Validator = &GCPClusterTemplate{}
+
+// ValidateCreate implements webhook.Validator so a webhook will be registered for the type.
+func (r *GCPClusterTemplate) ValidateCreate() error {
+	gcpclustertemplatelog.Info("validate create", "name", r.Name)
+
+	return nil
+}
+
+// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type.
+func (r *GCPClusterTemplate) ValidateUpdate(oldRaw runtime.Object) error {
+	old, ok := oldRaw.(*GCPClusterTemplate)
+	if !ok {
+		return apierrors.NewBadRequest(fmt.Sprintf("expected an GCPClusterTemplate but got a %T", oldRaw))
+	}
+
+	if !reflect.DeepEqual(r.Spec, old.Spec) {
+		return apierrors.NewBadRequest("GCPClusterTemplate.Spec is immutable")
+	}
+	return nil
+}
+
+// ValidateDelete implements webhook.Validator so a webhook will be registered for the type.
+func (r *GCPClusterTemplate) ValidateDelete() error {
+	gcpclustertemplatelog.Info("validate delete", "name", r.Name)
+	return nil
+}

api/v1alpha4/gcpclustertemplate_webhook_test.go

@@ -0,0 +1,86 @@
+/*
+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 v1alpha4
+
+import (
+	"testing"
+
+	. "github.com/onsi/gomega"
+)
+
+func TestGCPClusterTemplate_ValidateUpdate(t *testing.T) {
+	g := NewWithT(t)
+
+	tests := []struct {
+		name        string
+		newTemplate *GCPClusterTemplate
+		oldTemplate *GCPClusterTemplate
+		wantErr     bool
+	}{
+		{
+			name: "GCPClusterTemplated with immutable spec",
+			newTemplate: &GCPClusterTemplate{
+				Spec: GCPClusterTemplateSpec{
+					Template: GCPClusterTemplateResource{GCPClusterSpec{
+						Project: "test-gcp-cluster",
+						Region:  "ap-south-1",
+					}},
+				},
+			},
+			oldTemplate: &GCPClusterTemplate{
+				Spec: GCPClusterTemplateSpec{
+					Template: GCPClusterTemplateResource{GCPClusterSpec{
+						Project: "test-gcp-cluster",
+						Region:  "ap-south-1",
+					}},
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name: "GCPClusterTemplated with mutable spec",
+			newTemplate: &GCPClusterTemplate{
+				Spec: GCPClusterTemplateSpec{
+					Template: GCPClusterTemplateResource{GCPClusterSpec{
+						Project: "test-gcp-cluster",
+						Region:  "ap-south-1",
+					}},
+				},
+			},
+			oldTemplate: &GCPClusterTemplate{
+				Spec: GCPClusterTemplateSpec{
+					Template: GCPClusterTemplateResource{GCPClusterSpec{
+						Project: "test-gcp-cluster",
+						Region:  "ap-east-1",
+					}},
+				},
+			},
+			wantErr: true,
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+			err := test.newTemplate.ValidateUpdate(test.oldTemplate)
+			if test.wantErr {
+				g.Expect(err).To(HaveOccurred())
+			} else {
+				g.Expect(err).NotTo(HaveOccurred())
+			}
+		})
+	}
+}