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add.go
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add.go
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// Copyright (c) 2022 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 project
import (
corev1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
apiequality "k8s.io/apimachinery/pkg/api/equality"
"k8s.io/utils/pointer"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
predicateutils "github.com/gardener/gardener/pkg/controllerutils/predicate"
)
// ControllerName is the name of this controller.
const ControllerName = "project"
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(mgr manager.Manager) error {
if r.Client == nil {
r.Client = mgr.GetClient()
}
if r.Recorder == nil {
r.Recorder = mgr.GetEventRecorderFor(ControllerName + "-controller")
}
return builder.
ControllerManagedBy(mgr).
Named(ControllerName).
For(&gardencorev1beta1.Project{}, builder.WithPredicates(predicate.GenerationChangedPredicate{})).
Owns(&corev1.Namespace{}, builder.WithPredicates(predicateutils.ForEventTypes(predicateutils.Delete))).
Owns(&rbacv1.RoleBinding{}, builder.WithPredicates(r.RoleBindingPredicate())).
WithOptions(controller.Options{
MaxConcurrentReconciles: pointer.IntDeref(r.Config.ConcurrentSyncs, 0),
RecoverPanic: true,
RateLimiter: r.RateLimiter,
}).
Complete(r)
}
// RoleBindingPredicate filters for events for RoleBindings that we might need to reconcile back.
func (r *Reconciler) RoleBindingPredicate() predicate.Predicate {
return predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool { return false },
UpdateFunc: func(e event.UpdateEvent) bool {
// enqueue on periodic cache resyncs
if e.ObjectOld.GetResourceVersion() == e.ObjectNew.GetResourceVersion() {
return true
}
roleBinding, ok := e.ObjectNew.(*rbacv1.RoleBinding)
if !ok {
return false
}
oldRoleBinding, ok := e.ObjectOld.(*rbacv1.RoleBinding)
if !ok {
return false
}
return !apiequality.Semantic.DeepEqual(oldRoleBinding.RoleRef, roleBinding.RoleRef) ||
!apiequality.Semantic.DeepEqual(oldRoleBinding.Subjects, roleBinding.Subjects)
},
DeleteFunc: func(e event.DeleteEvent) bool { return true },
GenericFunc: func(e event.GenericEvent) bool { return false },
}
}