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add.go
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add.go
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// Copyright (c) 2020 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 secret
import (
"context"
"github.com/go-logr/logr"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/utils/pointer"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/cluster"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
resourcesv1alpha1 "github.com/gardener/gardener/pkg/apis/resources/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils/mapper"
managerpredicate "github.com/gardener/gardener/pkg/resourcemanager/predicate"
)
// ControllerName is the name of the controller.
const ControllerName = "secret"
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(mgr manager.Manager, sourceCluster cluster.Cluster) error {
if r.SourceClient == nil {
r.SourceClient = sourceCluster.GetClient()
}
return builder.
ControllerManagedBy(mgr).
Named(ControllerName).
For(&corev1.Secret{}, builder.WithPredicates(
// Only requeue secrets from create/update events with the controller's finalizer to not flood the controller
// with too many unnecessary requests for all secrets in cluster/namespace.
managerpredicate.HasFinalizer(r.ClassFilter.FinalizerName()),
)).
Watches(
&source.Kind{Type: &resourcesv1alpha1.ManagedResource{}},
mapper.EnqueueRequestsFrom(mapper.MapFunc(r.MapManagedResourcesToSecrets), mapper.UpdateWithOldAndNew, logr.Discard()),
builder.WithPredicates(predicate.GenerationChangedPredicate{}),
).
WithOptions(controller.Options{
MaxConcurrentReconciles: pointer.IntDeref(r.Config.ConcurrentSyncs, 0),
RecoverPanic: true,
}).
Complete(r)
}
// MapManagedResourcesToSecrets maps the ManagedResource to all referenced secrets.
func (r *Reconciler) MapManagedResourcesToSecrets(_ context.Context, _ logr.Logger, _ client.Reader, obj client.Object) []reconcile.Request {
managedResource, ok := obj.(*resourcesv1alpha1.ManagedResource)
if !ok {
return nil
}
var requests []reconcile.Request
for _, ref := range managedResource.Spec.SecretRefs {
if ref.Name == "" {
continue
}
requests = append(requests, reconcile.Request{
NamespacedName: types.NamespacedName{
Name: ref.Name,
Namespace: managedResource.Namespace,
},
})
}
return requests
}