/
interface.go
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/
interface.go
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/*
Copyright 2023 cuisongliu@qq.com.
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 kubeconfig
import (
"net"
"os"
"time"
csrv1 "k8s.io/api/certificates/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd/api"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
)
var defaultLog = ctrl.Log.WithName("kubeconfig")
type Interface interface {
Apply(config *rest.Config, client client.Client) (*api.Config, error)
}
type CertConfig struct {
*DefaultConfig
caKeyFile string
groups []string
dnsNames []string
ipAddresses []net.IP
}
type CsrConfig struct {
*DefaultConfig
groups []string
dnsNames []string
ipAddresses []net.IP
csr *csrv1.CertificateSigningRequest
ctxCAKey []byte
ctxTLSKey []byte
ctxTLSCrt []byte
ctxTLSCsr []byte
}
type ServiceAccountConfig struct {
*DefaultConfig
namespace string
sa *v1.ServiceAccount
secretName string
}
type WebhookConfig struct {
*DefaultConfig
webhookURL string
}
func GetKubernetesHost(config *rest.Config) string {
host, port := os.Getenv("SEALOS_CLOUD_HOST"), os.Getenv("APISERVER_PORT")
if len(host) != 0 && len(port) != 0 {
return "https://" + net.JoinHostPort(host, port)
}
host, port = os.Getenv("KUBERNETES_SERVICE_HOST"), os.Getenv("KUBERNETES_SERVICE_PORT")
if len(host) == 0 || len(port) == 0 {
return config.Host
}
return "https://" + net.JoinHostPort(host, port)
}
type DefaultConfig struct {
user string
clusterName string // default is kubernetes
expirationSeconds int32
}
func NewConfig(user string, clusterName string, expirationSeconds int32) *DefaultConfig {
if clusterName == "" {
clusterName = "sealos"
}
if expirationSeconds == 0 {
expirationSeconds = int32(2 * time.Hour.Seconds())
}
return &DefaultConfig{
user: user,
clusterName: clusterName,
expirationSeconds: expirationSeconds,
}
}
func (d *DefaultConfig) WithCertConfig(caKeyFile string, groups []string, dnsNames []string, ipAddrs []net.IP) Interface {
return &CertConfig{
DefaultConfig: d,
caKeyFile: caKeyFile,
groups: groups,
dnsNames: dnsNames,
ipAddresses: ipAddrs,
}
}
func (d *DefaultConfig) WithCsrConfig(groups []string, dnsNames []string, ipAddrs []net.IP, csr *csrv1.CertificateSigningRequest) Interface {
return &CsrConfig{
DefaultConfig: d,
groups: groups,
dnsNames: dnsNames,
ipAddresses: ipAddrs,
csr: csr,
}
}
func (d *DefaultConfig) WithServiceAccountConfig(namespace string, sa *v1.ServiceAccount) Interface {
if namespace == "" {
namespace = "default"
}
return &ServiceAccountConfig{
DefaultConfig: d,
namespace: namespace,
sa: sa,
}
}
func (d *DefaultConfig) WithWebhookConfigConfig(webhookURL string) Interface {
return &WebhookConfig{
DefaultConfig: d,
webhookURL: webhookURL,
}
}