mirror of
https://github.com/arangodb/kube-arangodb.git
synced 2024-12-15 17:51:03 +00:00
90 lines
2.8 KiB
Go
Generated
90 lines
2.8 KiB
Go
Generated
//
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// DISCLAIMER
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//
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// Copyright 2016-2024 ArangoDB GmbH, Cologne, Germany
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Copyright holder is ArangoDB GmbH, Cologne, Germany
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//
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package api
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import (
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"context"
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"crypto/tls"
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"time"
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core "k8s.io/api/core/v1"
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meta "k8s.io/apimachinery/pkg/apis/meta/v1"
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typedCore "k8s.io/client-go/kubernetes/typed/core/v1"
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"github.com/arangodb-helper/go-certificates"
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"github.com/arangodb/kube-arangodb/pkg/util/errors"
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)
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func prepareTLSConfig(cli typedCore.CoreV1Interface, cfg ServerConfig) (*tls.Config, error) {
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cert, key, err := loadOrSelfSignCertificate(cli, cfg)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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tlsConfig, err := createTLSConfig(cert, key)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return tlsConfig, nil
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}
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// loadOrSelfSignCertificate loads TLS certificate from secret or creates a new one
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func loadOrSelfSignCertificate(cli typedCore.CoreV1Interface, cfg ServerConfig) (string, string, error) {
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if cfg.TLSSecretName != "" {
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// Load TLS certificate from secret
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s, err := cli.Secrets(cfg.Namespace).Get(context.Background(), cfg.TLSSecretName, meta.GetOptions{})
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if err != nil {
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return "", "", err
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}
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certBytes, found := s.Data[core.TLSCertKey]
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if !found {
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return "", "", errors.Errorf("No %s found in secret %s", core.TLSCertKey, cfg.TLSSecretName)
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}
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keyBytes, found := s.Data[core.TLSPrivateKeyKey]
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if !found {
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return "", "", errors.Errorf("No %s found in secret %s", core.TLSPrivateKeyKey, cfg.TLSSecretName)
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}
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return string(certBytes), string(keyBytes), nil
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}
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// Secret not specified, create our own TLS certificate
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options := certificates.CreateCertificateOptions{
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CommonName: cfg.ServerName,
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Hosts: append([]string{cfg.ServerName}, cfg.ServerAltNames...),
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ValidFrom: time.Now(),
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ValidFor: time.Hour * 24 * 365 * 10,
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IsCA: false,
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ECDSACurve: "P256",
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}
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return certificates.CreateCertificate(options, nil)
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}
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// createTLSConfig creates a TLS config based on given config
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func createTLSConfig(cert, key string) (*tls.Config, error) {
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var result *tls.Config
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c, err := tls.X509KeyPair([]byte(cert), []byte(key))
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if err != nil {
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return nil, errors.WithStack(err)
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}
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result = &tls.Config{
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Certificates: []tls.Certificate{c},
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}
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return result, nil
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}
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