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secrets.go
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secrets.go
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// SPDX-FileCopyrightText: 2020 SAP SE or an SAP affiliate company and Gardener contributors.
//
// SPDX-License-Identifier: Apache-2.0
package certificates
import (
"context"
"github.com/pkg/errors"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// Interface represents a set of secrets that can be deployed and deleted.
type Interface interface {
// Deploy generates and deploys the secrets into the given namespace, taking into account existing secrets.
Deploy(context.Context, client.Client, string) (map[string]*corev1.Secret, error)
// Delete deletes the secrets from the given namespace.
Delete(context.Context, client.Client, string) error
}
// Secrets represents a set of secrets that can be deployed and deleted.
type Secrets struct {
CertificateSecretConfigs map[string]*CertificateSecretConfig
SecretConfigsFunc func(map[string]*Certificate, string) []ConfigInterface
}
// Deploy generates and deploys the secrets into the given namespace, taking into account existing secrets.
func (s *Secrets) Deploy(ctx context.Context, c client.Client, namespace string, pkcs int) (map[string]*corev1.Secret, error) {
// Get existing secrets in the namespace
existingSecrets, err := getSecrets(ctx, c, namespace)
if err != nil {
return nil, err
}
// Generate CAs
_, cas, err := GenerateCertificateAuthorities(c, existingSecrets, s.CertificateSecretConfigs, namespace, pkcs)
if err != nil {
return nil, errors.Wrapf(err, "could not generate CA secrets in namespace '%s'", namespace)
}
// Generate cluster secrets
secretConfigs := s.SecretConfigsFunc(cas, namespace)
clusterSecrets, err := GenerateClusterSecrets(ctx, c, existingSecrets, secretConfigs, namespace)
if err != nil {
return nil, errors.Wrapf(err, "could not generate cluster secrets in namespace '%s'", namespace)
}
return clusterSecrets, nil
}
// Delete deletes the secrets from the given namespace.
func (s *Secrets) Delete(ctx context.Context, c client.Client, namespace string) error {
for _, sc := range s.SecretConfigsFunc(nil, namespace) {
if err := deleteSecret(ctx, c, namespace, sc.GetName()); err != nil {
return err
}
}
return nil
}
func getSecrets(ctx context.Context, c client.Client, namespace string) (map[string]*corev1.Secret, error) {
secretList := &corev1.SecretList{}
err := c.List(ctx, secretList)
if err != nil {
return nil, errors.Wrapf(err, "could not list secrets in namespace '%s'", namespace)
}
result := make(map[string]*corev1.Secret, len(secretList.Items))
for _, secret := range secretList.Items {
func(secret corev1.Secret) {
result[secret.Name] = &secret
}(secret)
}
return result, nil
}
func deleteSecret(ctx context.Context, c client.Client, namespace, name string) error {
sec := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
},
}
return c.Delete(ctx, sec)
}