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shoot_quota_control.go
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shoot_quota_control.go
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// Copyright (c) 2018 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 shoot
import (
"context"
"time"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
"github.com/gardener/gardener/pkg/controllermanager/apis/config"
gutil "github.com/gardener/gardener/pkg/utils/gardener"
kutil "github.com/gardener/gardener/pkg/utils/kubernetes"
"github.com/sirupsen/logrus"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/cache"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
)
func (c *Controller) shootQuotaAdd(obj interface{}) {
key, err := cache.MetaNamespaceKeyFunc(obj)
if err != nil {
return
}
c.shootQuotaQueue.Add(key)
}
func (c *Controller) shootQuotaDelete(obj interface{}) {
shoot, ok := obj.(*gardencorev1beta1.Shoot)
if shoot == nil || !ok {
return
}
key, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj)
if err != nil {
return
}
c.shootQuotaQueue.Done(key)
}
// NewShootQuotaReconciler creates a new instance of a reconciler which checks handles Shoots using SecretBindings that
// references Quotas.
func NewShootQuotaReconciler(l logrus.FieldLogger, gardenClient client.Client, cfg config.ShootQuotaControllerConfiguration) reconcile.Reconciler {
return &shootQuotaReconciler{
logger: l,
cfg: cfg,
gardenClient: gardenClient,
}
}
type shootQuotaReconciler struct {
logger logrus.FieldLogger
cfg config.ShootQuotaControllerConfiguration
gardenClient client.Client
}
func (r *shootQuotaReconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) {
shoot := &gardencorev1beta1.Shoot{}
if err := r.gardenClient.Get(ctx, request.NamespacedName, shoot); err != nil {
if apierrors.IsNotFound(err) {
r.logger.Infof("Object %q is gone, stop reconciling: %v", request.Name, err)
return reconcile.Result{}, nil
}
r.logger.Infof("Unable to retrieve object %q from store: %v", request.Name, err)
return reconcile.Result{}, err
}
secretBinding := &gardencorev1beta1.SecretBinding{}
if err := r.gardenClient.Get(ctx, kutil.Key(shoot.Namespace, shoot.Spec.SecretBindingName), secretBinding); err != nil {
return reconcile.Result{}, err
}
var clusterLifeTime *int32
for _, quotaRef := range secretBinding.Quotas {
quota := &gardencorev1beta1.Quota{}
if err := r.gardenClient.Get(ctx, kutil.Key(quotaRef.Namespace, quotaRef.Name), quota); err != nil {
return reconcile.Result{}, err
}
if quota.Spec.ClusterLifetimeDays == nil {
continue
}
if clusterLifeTime == nil || *quota.Spec.ClusterLifetimeDays < *clusterLifeTime {
clusterLifeTime = quota.Spec.ClusterLifetimeDays
}
}
// If the Shoot has no Quotas referenced (anymore) or if the referenced Quotas does not have a clusterLifetime,
// then we will not check for cluster lifetime expiration, even if the Shoot has a clusterLifetime timestamp already annotated.
if clusterLifeTime == nil {
return reconcile.Result{RequeueAfter: r.cfg.SyncPeriod.Duration}, nil
}
expirationTime, exits := shoot.Annotations[v1beta1constants.ShootExpirationTimestamp]
if !exits {
expirationTime = shoot.CreationTimestamp.Add(time.Duration(*clusterLifeTime*24) * time.Hour).Format(time.RFC3339)
metav1.SetMetaDataAnnotation(&shoot.ObjectMeta, v1beta1constants.ShootExpirationTimestamp, expirationTime)
if err := r.gardenClient.Update(ctx, shoot); err != nil {
return reconcile.Result{}, err
}
}
expirationTimeParsed, err := time.Parse(time.RFC3339, expirationTime)
if err != nil {
return reconcile.Result{}, err
}
if time.Now().UTC().After(expirationTimeParsed.UTC()) {
r.logger.Info("[SHOOT QUOTA] Shoot cluster lifetime expired. Shoot will be deleted.")
// We have to annotate the Shoot to confirm the deletion.
if err := gutil.ConfirmDeletion(ctx, r.gardenClient, shoot); err != nil {
if apierrors.IsNotFound(err) {
r.logger.Info("Shoot already gone")
return reconcile.Result{}, nil
}
return reconcile.Result{}, err
}
// Now we are allowed to delete the Shoot (to set the deletionTimestamp).
return reconcile.Result{}, client.IgnoreNotFound(r.gardenClient.Delete(ctx, shoot))
}
return reconcile.Result{RequeueAfter: r.cfg.SyncPeriod.Duration}, nil
}