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mapper.go
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/
mapper.go
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// Copyright (c) 2019 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 backupbucket
import (
"context"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/runtime/inject"
extensionshandler "github.com/gardener/gardener/extensions/pkg/handler"
extensionspredicate "github.com/gardener/gardener/extensions/pkg/predicate"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
)
type secretToBackupBucketMapper struct {
client client.Client
predicates []predicate.Predicate
}
func (m *secretToBackupBucketMapper) InjectClient(c client.Client) error {
m.client = c
return nil
}
func (m *secretToBackupBucketMapper) InjectFunc(f inject.Func) error {
for _, p := range m.predicates {
if err := f(p); err != nil {
return err
}
}
return nil
}
func (m *secretToBackupBucketMapper) Map(obj client.Object) []reconcile.Request {
secret, ok := obj.(*corev1.Secret)
if !ok {
return nil
}
backupBucketList := &extensionsv1alpha1.BackupBucketList{}
if err := m.client.List(context.TODO(), backupBucketList); err != nil {
return nil
}
var requests []reconcile.Request
for _, backupBucket := range backupBucketList.Items {
if backupBucket.Spec.SecretRef.Name == secret.Name && backupBucket.Spec.SecretRef.Namespace == secret.Namespace {
if extensionspredicate.EvalGeneric(&backupBucket, m.predicates...) {
requests = append(requests, reconcile.Request{
NamespacedName: types.NamespacedName{
Name: backupBucket.Name,
},
})
}
}
}
return requests
}
// SecretToBackupBucketMapper returns a mapper that returns requests for BackupBucket whose
// referenced secrets have been modified.
func SecretToBackupBucketMapper(predicates []predicate.Predicate) extensionshandler.Mapper {
return &secretToBackupBucketMapper{predicates: predicates}
}