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secrets.go
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secrets.go
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// Copyright 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 gardener
import (
"context"
"errors"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/selection"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/pkg/utils"
)
var (
// NoControlPlaneSecretsReq is a label selector requirement to select non-control plane secrets.
NoControlPlaneSecretsReq = utils.MustNewRequirement(constants.GardenRole, selection.NotIn, constants.ControlPlaneSecretRoles...)
// UncontrolledSecretSelector is a selector for objects which are managed by operators/users and not created by
// Gardener controllers.
UncontrolledSecretSelector = client.MatchingLabelsSelector{Selector: labels.NewSelector().Add(NoControlPlaneSecretsReq)}
)
// FetchKubeconfigFromSecret tries to retrieve the kubeconfig bytes in given secret.
func FetchKubeconfigFromSecret(ctx context.Context, c client.Client, key client.ObjectKey) ([]byte, error) {
secret := &corev1.Secret{}
if err := c.Get(ctx, key, secret); err != nil {
return nil, err
}
kubeconfig, ok := secret.Data[kubernetes.KubeConfig]
if !ok || len(kubeconfig) == 0 {
return nil, errors.New("the secret's field 'kubeconfig' is either not present or empty")
}
return kubeconfig, nil
}