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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 bastion
import (
"context"
"github.com/go-logr/logr"
"k8s.io/apimachinery/pkg/types"
"k8s.io/utils/clock"
"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/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
operationsv1alpha1 "github.com/gardener/gardener/pkg/apis/operations/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils/mapper"
predicateutils "github.com/gardener/gardener/pkg/controllerutils/predicate"
"github.com/gardener/gardener/pkg/extensions"
kubernetesutils "github.com/gardener/gardener/pkg/utils/kubernetes"
)
// ControllerName is the name of this controller.
const ControllerName = "bastion"
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(mgr manager.Manager, gardenCluster, seedCluster cluster.Cluster) error {
if r.GardenClient == nil {
r.GardenClient = gardenCluster.GetClient()
}
if r.SeedClient == nil {
r.SeedClient = seedCluster.GetClient()
}
if r.Clock == nil {
r.Clock = clock.RealClock{}
}
c, err := builder.
ControllerManagedBy(mgr).
Named(ControllerName).
WithOptions(controller.Options{
MaxConcurrentReconciles: pointer.IntDeref(r.Config.ConcurrentSyncs, 0),
RateLimiter: r.RateLimiter,
}).
Watches(
source.NewKindWithCache(&operationsv1alpha1.Bastion{}, gardenCluster.GetCache()),
&handler.EnqueueRequestForObject{},
builder.WithPredicates(predicate.GenerationChangedPredicate{}),
).
Build(r)
if err != nil {
return err
}
return c.Watch(
source.NewKindWithCache(&extensionsv1alpha1.Bastion{}, seedCluster.GetCache()),
mapper.EnqueueRequestsFrom(mapper.MapFunc(r.MapExtensionsBastionToOperationsBastion), mapper.UpdateWithNew, c.GetLogger()),
predicateutils.ExtensionStatusChanged(),
)
}
// MapExtensionsBastionToOperationsBastion is a mapper.MapFunc for mapping extensions Bastion in the seed cluster to operations Bastion in the project namespace.
func (r *Reconciler) MapExtensionsBastionToOperationsBastion(ctx context.Context, log logr.Logger, reader client.Reader, obj client.Object) []reconcile.Request {
shoot, err := extensions.GetShoot(ctx, r.SeedClient, obj.GetNamespace())
if err != nil {
log.Error(err, "Failed to get shoot from cluster", "shootTechnicalID", obj.GetNamespace())
return nil
}
if shoot == nil {
log.Info("Shoot is missing in cluster resource", "cluster", kubernetesutils.Key(obj.GetNamespace()))
return nil
}
return []reconcile.Request{{NamespacedName: types.NamespacedName{Name: obj.GetName(), Namespace: shoot.Namespace}}}
}