/
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 garden
import (
"fmt"
"github.com/Masterminds/semver/v3"
"k8s.io/utils/clock"
"k8s.io/utils/ptr"
"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"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
operatorv1alpha1 "github.com/gardener/gardener/pkg/apis/operator/v1alpha1"
"github.com/gardener/gardener/pkg/client/kubernetes"
clientmapbuilder "github.com/gardener/gardener/pkg/client/kubernetes/clientmap/builder"
)
// ControllerName is the name of this controller.
const ControllerName = "garden"
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(mgr manager.Manager) error {
var err error
if r.RuntimeClientSet == nil {
r.RuntimeClientSet, err = kubernetes.NewWithConfig(
kubernetes.WithRESTConfig(mgr.GetConfig()),
kubernetes.WithRuntimeAPIReader(mgr.GetAPIReader()),
kubernetes.WithRuntimeClient(mgr.GetClient()),
kubernetes.WithRuntimeCache(mgr.GetCache()),
)
if err != nil {
return fmt.Errorf("failed creating runtime clientset: %w", err)
}
}
if r.RuntimeVersion == nil {
serverVersion, err := r.RuntimeClientSet.DiscoverVersion()
if err != nil {
return fmt.Errorf("failed getting server version for runtime cluster: %w", err)
}
r.RuntimeVersion, err = semver.NewVersion(serverVersion.GitVersion)
if err != nil {
return fmt.Errorf("failed parsing version %q for runtime cluster: %w", serverVersion.GitVersion, err)
}
}
if r.Clock == nil {
r.Clock = clock.RealClock{}
}
if r.Recorder == nil {
r.Recorder = mgr.GetEventRecorderFor(ControllerName + "-controller")
}
if r.GardenNamespace == "" {
r.GardenNamespace = v1beta1constants.GardenNamespace
}
if r.GardenClientMap == nil {
var err error
r.GardenClientMap, err = clientmapbuilder.
NewGardenClientMapBuilder().
WithRuntimeClient(mgr.GetClient()).
WithClientConnectionConfig(&r.Config.VirtualClientConnection).
WithGardenNamespace(r.GardenNamespace).
Build(mgr.GetLogger())
if err != nil {
return fmt.Errorf("failed to build garden ClientMap: %w", err)
}
if err := mgr.Add(r.GardenClientMap); err != nil {
return err
}
}
return builder.
ControllerManagedBy(mgr).
Named(ControllerName).
For(&operatorv1alpha1.Garden{}, builder.WithPredicates(predicate.Or(predicate.GenerationChangedPredicate{}, r.HasOperationAnnotation()))).
WithOptions(controller.Options{
MaxConcurrentReconciles: ptr.Deref(r.Config.Controllers.Garden.ConcurrentSyncs, 0),
}).
Complete(r)
}
// HasOperationAnnotation returns a predicate which returns true when the object has an operation annotation.
func (r *Reconciler) HasOperationAnnotation() predicate.Predicate {
hasOperationAnnotation := func(annotations map[string]string) bool {
return operatorv1alpha1.AvailableOperationAnnotations.Has(annotations[v1beta1constants.GardenerOperation])
}
return predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return hasOperationAnnotation(e.Object.GetAnnotations())
},
UpdateFunc: func(e event.UpdateEvent) bool {
return !hasOperationAnnotation(e.ObjectOld.GetAnnotations()) && hasOperationAnnotation(e.ObjectNew.GetAnnotations())
},
DeleteFunc: func(_ event.DeleteEvent) bool { return false },
GenericFunc: func(_ event.GenericEvent) bool { return false },
}
}