/
configmap_control.go
101 lines (86 loc) · 3.55 KB
/
configmap_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"
"github.com/gardener/gardener/pkg/logger"
"github.com/gardener/gardener/pkg/utils/kubernetes"
corev1 "k8s.io/api/core/v1"
apiequality "k8s.io/apimachinery/pkg/api/equality"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/client-go/tools/cache"
)
func (c *Controller) configMapAdd(obj interface{}) {
key, err := cache.MetaNamespaceKeyFunc(obj)
if err != nil {
logger.Logger.Errorf("[ConfigMap controller] Couldn't get key for object %+v: %v", obj, err)
return
}
c.configMapQueue.Add(key)
}
func (c *Controller) configMapUpdate(oldObj, newObj interface{}) {
var (
oldConfigMap = oldObj.(*corev1.ConfigMap)
newConfigMap = newObj.(*corev1.ConfigMap)
)
if apiequality.Semantic.Equalities.DeepEqual(oldConfigMap.Data, newConfigMap.Data) {
logger.Logger.Debugf("[SHOOT CONFIGMAP controller] No update of the `.data` field of cm %v/%v. Do not requeue the ConfigMap", oldConfigMap.Namespace, oldConfigMap.Name)
return
}
c.configMapAdd(newObj)
}
func (c *Controller) reconcileConfigMapKey(key string) error {
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
return err
}
configMap, err := c.configMapLister.ConfigMaps(namespace).Get(name)
if apierrors.IsNotFound(err) {
logger.Logger.Debugf("[SHOOT CONFIGMAP] %s - skipping because ConfigMap has been deleted", key)
return nil
}
if err != nil {
logger.Logger.Errorf("[SHOOT CONFIGMAP] %s - unable to retrieve object from store: %v", key, err)
return err
}
return c.reconcileShootsReferringConfigMap(configMap)
}
func (c *Controller) reconcileShootsReferringConfigMap(configMap *corev1.ConfigMap) error {
shoots, err := c.shootLister.Shoots(configMap.Namespace).List(labels.Everything())
if err != nil {
return err
}
for _, shoot := range shoots {
if shoot.Spec.Kubernetes.KubeAPIServer != nil &&
shoot.Spec.Kubernetes.KubeAPIServer.AuditConfig != nil &&
shoot.Spec.Kubernetes.KubeAPIServer.AuditConfig.AuditPolicy != nil &&
shoot.Spec.Kubernetes.KubeAPIServer.AuditConfig.AuditPolicy.ConfigMapRef != nil &&
shoot.Spec.Kubernetes.KubeAPIServer.AuditConfig.AuditPolicy.ConfigMapRef.Name == configMap.Name {
shootKey, err := cache.MetaNamespaceKeyFunc(shoot)
if err != nil {
logger.Logger.Errorf("[SHOOT CONFIGMAP controller] failed to get key for shoot. err=%+v", err)
continue
}
if shoot.Spec.Kubernetes.KubeAPIServer.AuditConfig.AuditPolicy.ConfigMapRef.ResourceVersion != configMap.ResourceVersion {
logger.Logger.Infof("[SHOOT CONFIGMAP controller] schedule for reconciliation shoot %v ", shootKey)
// send empty patch to let the admission plugin add the config map resource version
if err := kubernetes.SubmitEmptyPatch(context.TODO(), c.k8sGardenClient.Client(), shoot); err != nil {
return err
}
}
}
}
return nil
}