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add.go
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add.go
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// Copyright 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 csrapprover
import (
certificatesv1 "k8s.io/api/certificates/v1"
"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/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/source"
predicateutils "github.com/gardener/gardener/pkg/controllerutils/predicate"
)
// ControllerName is the name of the controller.
const ControllerName = "kubelet-csr-approver"
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(mgr manager.Manager, sourceCluster, targetCluster cluster.Cluster) error {
if r.SourceClient == nil {
r.SourceClient = sourceCluster.GetClient()
}
if r.TargetClient == nil {
r.TargetClient = targetCluster.GetClient()
}
return builder.
ControllerManagedBy(mgr).
Named(ControllerName).
WithOptions(controller.Options{
MaxConcurrentReconciles: pointer.IntDeref(r.Config.ConcurrentSyncs, 0),
}).
WatchesRawSource(
source.Kind(targetCluster.GetCache(), &certificatesv1.CertificateSigningRequest{}),
&handler.EnqueueRequestForObject{},
builder.WithPredicates(
predicateutils.ForEventTypes(predicateutils.Create, predicateutils.Update),
predicate.NewPredicateFuncs(func(obj client.Object) bool {
csr, ok := obj.(*certificatesv1.CertificateSigningRequest)
return ok && csr.Spec.SignerName == certificatesv1.KubeletServingSignerName
}),
),
).Complete(r)
}