Move webhooks to ./webhooks package and refactor so they fulfil the…

… interfaces required.

Dockerfile

@@ -14,6 +14,7 @@ COPY main.go main.go
 COPY apis/ apis/
 COPY pkg/ pkg/
 COPY controllers/ controllers/
+COPY webhooks/ webhooks/
 
 # Build
 RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -o manager main.go

Makefile

@@ -125,9 +125,9 @@ ENVTEST_ASSETS_DIR=$(shell pwd)/testbin
 test: manifests generate fmt vet envtest ## Run tests.
 ifdef TEST
 	@echo Running test $(TEST)
-	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) -p path)" go test $(GO_FLAGS) ./apis/... ./pkg/... ./test/yq/... ./controllers/... -run="$(TEST)" -coverprofile cover.out
+	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) -p path)" go test $(GO_FLAGS) ./webhooks/... ./apis/... ./pkg/... ./test/yq/... ./controllers/... -run="$(TEST)" -coverprofile cover.out
 else
-	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) -p path)" go test $(GO_FLAGS) ./apis/... ./pkg/... ./test/yq/... ./controllers/... -coverprofile cover.out
+	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) -p path)" go test $(GO_FLAGS) ./webhooks/... ./apis/... ./pkg/... ./test/yq/... ./controllers/... -coverprofile cover.out
 endif
 
 PHONY: e2e-test

main.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	"github.com/k8ssandra/k8ssandra-operator/webhooks"
 	"os"
 	"strings"
 
@@ -172,7 +173,7 @@ func main() {
 			setupLog.Error(err, "unable to create controller", "controller", "K8ssandraCluster")
 			os.Exit(1)
 		}
-		if err = (&k8ssandraiov1alpha1.K8ssandraCluster{}).SetupWebhookWithManager(mgr, clientCache); err != nil {
+		if err = (&webhooks.ValidatedK8ssandraCluster{}).SetupWebhookWithManager(mgr, clientCache); err != nil {
 			setupLog.Error(err, "unable to create webhook", "webhook", "K8ssandraCluster")
 			os.Exit(1)
 		}

apis/k8ssandra/v1alpha1/k8ssandracluster_webhook.go → webhooks/k8ssandracluster_webhook.go

@@ -14,10 +14,11 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package v1alpha1
+package webhooks
 
 import (
 	"fmt"
+	"github.com/k8ssandra/k8ssandra-operator/apis/k8ssandra/v1alpha1"
 
 	"github.com/k8ssandra/k8ssandra-operator/pkg/clientcache"
 	"github.com/pkg/errors"
@@ -35,36 +36,38 @@ var (
 	ErrNoResourcesSet  = fmt.Errorf("softPodAntiAffinity requires Resources to be set")
 )
 
+type ValidatedK8ssandraCluster struct { v1alpha1.K8ssandraCluster }
+
 // log is for logging in this package.
 var webhookLog = logf.Log.WithName("k8ssandracluster-webhook")
 
-func (r *K8ssandraCluster) SetupWebhookWithManager(mgr ctrl.Manager, cCache *clientcache.ClientCache) error {
+func (r *ValidatedK8ssandraCluster) SetupWebhookWithManager(mgr ctrl.Manager, cCache *clientcache.ClientCache) error {
 	clientCache = cCache
 	return ctrl.NewWebhookManagedBy(mgr).
 		For(r).
 		Complete()
 }
 
-var _ webhook.Defaulter = &K8ssandraCluster{}
+var _ webhook.Defaulter = &ValidatedK8ssandraCluster{}
 
 // Default implements webhook.Defaulter so a webhook will be registered for the type
-func (r *K8ssandraCluster) Default() {
+func (r *ValidatedK8ssandraCluster) Default() {
 	webhookLog.Info("K8ssandraCluster default values", "K8ssandraCluster", r.Name)
 
 }
 
 //+kubebuilder:webhook:path=/validate-k8ssandra-io-v1alpha1-k8ssandracluster,mutating=false,failurePolicy=fail,sideEffects=None,groups=k8ssandra.io,resources=k8ssandraclusters,verbs=create;update,versions=v1alpha1,name=vk8ssandracluster.kb.io,admissionReviewVersions=v1
 
-var _ webhook.Validator = &K8ssandraCluster{}
+var _ webhook.Validator = &ValidatedK8ssandraCluster{}
 
 // ValidateCreate implements webhook.Validator so a webhook will be registered for the type
-func (r *K8ssandraCluster) ValidateCreate() error {
+func (r *ValidatedK8ssandraCluster) ValidateCreate() error {
 	webhookLog.Info("validate K8ssandraCluster create", "K8ssandraCluster", r.Name)
 
 	return r.validateK8ssandraCluster()
 }
 
-func (r *K8ssandraCluster) validateK8ssandraCluster() error {
+func (r *ValidatedK8ssandraCluster) validateK8ssandraCluster() error {
 	hasClusterStorageConfig := r.Spec.Cassandra.StorageConfig != nil
 	// Verify given k8s-contexts are correct
 	for _, dc := range r.Spec.Cassandra.Datacenters {
@@ -90,14 +93,14 @@ func (r *K8ssandraCluster) validateK8ssandraCluster() error {
 }
 
 // ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
-func (r *K8ssandraCluster) ValidateUpdate(old runtime.Object) error {
+func (r *ValidatedK8ssandraCluster) ValidateUpdate(old runtime.Object) error {
 	webhookLog.Info("validate K8ssandraCluster update", "K8ssandraCluster", r.Name)
 
 	if err := r.validateK8ssandraCluster(); err != nil {
 		return err
 	}
 
-	oldCluster, ok := old.(*K8ssandraCluster)
+	oldCluster, ok := old.(*v1alpha1.K8ssandraCluster)
 	if !ok {
 		return fmt.Errorf("previous object could not be casted to K8ssandraCluster")
 	}
@@ -147,7 +150,7 @@ func (r *K8ssandraCluster) ValidateUpdate(old runtime.Object) error {
 }
 
 // ValidateDelete implements webhook.Validator so a webhook will be registered for the type
-func (r *K8ssandraCluster) ValidateDelete() error {
+func (r *ValidatedK8ssandraCluster) ValidateDelete() error {
 	webhookLog.Info("validate K8ssandraCluster delete", "name", r.Name)
 	return nil
 }

apis/k8ssandra/v1alpha1/k8ssandracluster_webhook_test.go → webhooks/k8ssandracluster_webhook_test.go

@@ -14,12 +14,13 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package v1alpha1
+package webhooks
 
 import (
 	"context"
 	"crypto/tls"
 	"fmt"
+	"github.com/k8ssandra/k8ssandra-operator/apis/k8ssandra/v1alpha1"
 	"net"
 	"path/filepath"
 	"testing"
@@ -75,7 +76,7 @@ func TestWebhook(t *testing.T) {
 	defer testEnv.Stop()
 
 	scheme := runtime.NewScheme()
-	err = AddToScheme(scheme)
+	err = v1alpha1.AddToScheme(scheme)
 	require.NoError(err)
 
 	err = corev1.AddToScheme(scheme)
@@ -84,7 +85,7 @@ func TestWebhook(t *testing.T) {
 	err = admissionv1.AddToScheme(scheme)
 	require.NoError(err)
 
-	err = AddToScheme(scheme)
+	err = v1alpha1.AddToScheme(scheme)
 	require.NoError(err)
 
 	err = reaperapi.AddToScheme(scheme)
@@ -110,7 +111,7 @@ func TestWebhook(t *testing.T) {
 
 	clientCache := clientcache.New(k8sClient, k8sClient, scheme)
 	clientCache.AddClient("envtest", k8sClient)
-	err = (&K8ssandraCluster{}).SetupWebhookWithManager(mgr, clientCache)
+	err = (&ValidatedK8ssandraCluster{}).SetupWebhookWithManager(mgr, clientCache)
 	require.NoError(err)
 
 	//+kubebuilder:scaffold:webhook
@@ -189,7 +190,7 @@ func testStorageConfigValidation(t *testing.T) {
 	err = k8sClient.Update(ctx, cluster)
 	require.NoError(err)
 
-	cluster.Spec.Cassandra.Datacenters = append(cluster.Spec.Cassandra.Datacenters, CassandraDatacenterTemplate{
+	cluster.Spec.Cassandra.Datacenters = append(cluster.Spec.Cassandra.Datacenters, v1alpha1.CassandraDatacenterTemplate{
 		K8sContext: "envtest",
 		Size:       1,
 	})
@@ -208,7 +209,7 @@ func testNumTokens(t *testing.T) {
 	cluster := createMinimalClusterObj("numtokens-test", "numtokens-namespace")
 
 	// Create without token definition
-	cluster.Spec.Cassandra.CassandraConfig = &CassandraConfig{}
+	cluster.Spec.Cassandra.CassandraConfig = &v1alpha1.CassandraConfig{}
 	err := k8sClient.Create(ctx, cluster)
 	require.NoError(err)
 
@@ -245,16 +246,16 @@ func createNamespace(require *require.Assertions, namespace string) {
 	require.NoError(err)
 }
 
-func createMinimalClusterObj(name, namespace string) *K8ssandraCluster {
-	return &K8ssandraCluster{
+func createMinimalClusterObj(name, namespace string) *v1alpha1.K8ssandraCluster {
+	return &v1alpha1.K8ssandraCluster{
 		ObjectMeta: metav1.ObjectMeta{
 			Name:      name,
 			Namespace: namespace,
 		},
-		Spec: K8ssandraClusterSpec{
-			Cassandra: &CassandraClusterTemplate{
+		Spec: v1alpha1.K8ssandraClusterSpec{
+			Cassandra: &v1alpha1.CassandraClusterTemplate{
 				StorageConfig: &v1beta1.StorageConfig{},
-				Datacenters: []CassandraDatacenterTemplate{
+				Datacenters: []v1alpha1.CassandraDatacenterTemplate{
 					{
 						K8sContext: "envtest",
 						Size:       1,