clusterdevfileregistrieslist_webhook.go

//
//
// Copyright Red Hat
//
// 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 (
	"context"
	"fmt"

	corev1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/runtime"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/client"
	logf "sigs.k8s.io/controller-runtime/pkg/log"
	"sigs.k8s.io/controller-runtime/pkg/webhook"
)

// log is for logging in this package.
var clusterdevfileregistrieslistlog = logf.Log.WithName("clusterdevfileregistrieslist-resource")

func (r *ClusterDevfileRegistriesList) SetupWebhookWithManager(mgr ctrl.Manager) error {
	kubeClient = mgr.GetClient()
	return ctrl.NewWebhookManagedBy(mgr).
		For(r).
		Complete()
}

//+kubebuilder:webhook:path=/mutate-registry-devfile-io-v1alpha1-clusterdevfileregistrieslist,mutating=true,failurePolicy=fail,sideEffects=None,groups=registry.devfile.io,resources=clusterdevfileregistrieslists,verbs=create;update,versions=v1alpha1,name=mclusterdevfileregistrieslist.kb.io,admissionReviewVersions=v1

var _ webhook.Defaulter = &ClusterDevfileRegistriesList{}

const multiCRError = "a ClusterDevfileRegistriesList instance already exists, only one instance can exist in a cluster"

// Default implements webhook.Defaulter so a webhook will be registered for the type
func (r *ClusterDevfileRegistriesList) Default() {
	clusterdevfileregistrieslistlog.Info("default", "name", r.Name)
}

//+kubebuilder:webhook:path=/validate-registry-devfile-io-v1alpha1-clusterdevfileregistrieslist,mutating=false,failurePolicy=fail,sideEffects=None,groups=registry.devfile.io,resources=clusterdevfileregistrieslists,verbs=create;update,versions=v1alpha1,name=vclusterdevfileregistrieslist.kb.io,admissionReviewVersions=v1

var _ webhook.Validator = &ClusterDevfileRegistriesList{}

// ValidateCreate implements webhook.Validator so a webhook will be registered for the type
func (r *ClusterDevfileRegistriesList) ValidateCreate() error {
	clusterdevfileregistrieslistlog.Info("validate create", "name", r.Name)
	//limit CR creation to one per cluster
	clusterDevfileRegistriesList := &ClusterDevfileRegistriesListList{}
	listOpts := []client.ListOption{
		client.InNamespace(corev1.NamespaceAll),
	}

	if err := kubeClient.List(context.TODO(), clusterDevfileRegistriesList, listOpts...); err != nil {
		return fmt.Errorf("error listing clusterDevfileRegistriesList custom resources: %v", err)
	}

	if len(clusterDevfileRegistriesList.Items) == 1 {
		return fmt.Errorf(multiCRError)
	}

	if err := validateURLs(r.Spec.DevfileRegistries); err != nil {
		return err
	}

	return IsNamespaceValid(r.Namespace)
}

// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
func (r *ClusterDevfileRegistriesList) ValidateUpdate(old runtime.Object) error {
	clusterdevfileregistrieslistlog.Info("validate update", "name", r.Name)
	//re-validate the entire list to ensure existing URLs have not gone stale
	return validateURLs(r.Spec.DevfileRegistries)
}

// ValidateDelete implements webhook.Validator so a webhook will be registered for the type
func (r *ClusterDevfileRegistriesList) ValidateDelete() error {
	clusterdevfileregistrieslistlog.Info("validate delete", "name", r.Name)
	return nil
}