Added MaxScale validation webhook

api/v1alpha1/maxscale_webhook.go

@@ -0,0 +1,42 @@
+package v1alpha1
+
+import (
+	"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"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
+)
+
+var maxscaleLogger = logf.Log.WithName("maxscale")
+
+func (r *MaxScale) SetupWebhookWithManager(mgr ctrl.Manager) error {
+	return ctrl.NewWebhookManagedBy(mgr).
+		For(r).
+		Complete()
+}
+
+//+kubebuilder:webhook:path=/validate-mariadb-mmontes-io-v1alpha1-maxscale,mutating=false,failurePolicy=fail,sideEffects=None,groups=mariadb.mmontes.io,resources=maxscales,verbs=create;update,versions=v1alpha1,name=vmaxscale.kb.io,admissionReviewVersions=v1
+
+var _ webhook.Validator = &MaxScale{}
+
+// ValidateCreate implements webhook.Validator so a webhook will be registered for the type
+func (r *MaxScale) ValidateCreate() (admission.Warnings, error) {
+	maxscaleLogger.V(1).Info("Validate create", "name", r.Name)
+	return nil, nil
+}
+
+// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
+func (r *MaxScale) ValidateUpdate(old runtime.Object) (admission.Warnings, error) {
+	maxscaleLogger.V(1).Info("Validate update", "name", r.Name)
+	oldMaxScale := old.(*MaxScale)
+	if err := inmutableWebhook.ValidateUpdate(r, oldMaxScale); err != nil {
+		return nil, err
+	}
+	return nil, nil
+}
+
+// ValidateDelete implements webhook.Validator so a webhook will be registered for the type
+func (r *MaxScale) ValidateDelete() (admission.Warnings, error) {
+	return nil, nil
+}