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cloudprovider.go
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cloudprovider.go
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// Copyright (c) 2021 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 cloudprovider
import (
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
extensionswebhook "github.com/gardener/gardener/extensions/pkg/webhook"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
)
const (
// WebhookName is the name of the webhook.
WebhookName = "cloudprovider"
)
var logger = log.Log.WithName("cloudprovider-webhook")
// Args are the requirements to create a cloudprovider webhook.
type Args struct {
Provider string
Mutator extensionswebhook.Mutator
EnableObjectSelector bool
}
// New creates a new cloudprovider webhook.
func New(mgr manager.Manager, args Args) (*extensionswebhook.Webhook, error) {
logger := logger.WithValues("cloud-provider", args.Provider)
types := []extensionswebhook.Type{{Obj: &corev1.Secret{}}}
handler, err := extensionswebhook.NewBuilder(mgr, logger).WithMutator(args.Mutator, types...).Build()
if err != nil {
return nil, err
}
namespaceSelector := buildSelector(args.Provider)
logger.Info("Creating webhook")
webhook := &extensionswebhook.Webhook{
Name: WebhookName,
Target: extensionswebhook.TargetSeed,
Provider: args.Provider,
Types: types,
Webhook: &admission.Webhook{Handler: handler},
Path: WebhookName,
Selector: namespaceSelector,
}
if args.EnableObjectSelector {
webhook.ObjectSelector = &metav1.LabelSelector{
MatchLabels: map[string]string{
v1beta1constants.GardenerPurpose: v1beta1constants.SecretNameCloudProvider,
},
}
}
return webhook, nil
}
func buildSelector(provider string) *metav1.LabelSelector {
return &metav1.LabelSelector{
MatchExpressions: []metav1.LabelSelectorRequirement{
{
Key: v1beta1constants.LabelShootProvider,
Operator: metav1.LabelSelectorOpIn,
Values: []string{provider},
},
},
}
}