/
client.go
84 lines (70 loc) · 2.07 KB
/
client.go
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// Copyright (c) 2023, Oracle and/or its affiliates.
// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
package k8s
import (
"encoding/base64"
"errors"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
"os"
)
const (
injectedKubeConfig = "INJECTED_KUBECONFIG"
)
var (
kubernetesInterface kubernetes.Interface
dynamicInterface dynamic.Interface
)
// MustSetKubeconfigFromEnv sets the current kubeconfig from the environment. If the kubeconfig cannot be set, panic.
func MustSetKubeconfigFromEnv() {
val := os.Getenv(injectedKubeConfig)
if len(val) < 1 {
panic(errors.New("injected KubeConfig not found"))
}
kc, err := base64.StdEncoding.DecodeString(val)
if err != nil {
panic(err)
}
InjectedKubeConfig = kc
}
var InjectedKubeConfig []byte
// NewInterfaceForKubeconfig creates a kubernetes.Interface given a kubeconfig string
func NewInterfaceForKubeconfig(kubeconfig []byte) (kubernetes.Interface, error) {
config, err := clientcmd.RESTConfigFromKubeConfig(kubeconfig)
if err != nil {
return nil, err
}
return kubernetes.NewForConfig(config)
}
func NewDynamicForKubeconfig(kubeconfig []byte) (dynamic.Interface, error) {
config, err := clientcmd.RESTConfigFromKubeConfig(kubeconfig)
if err != nil {
return nil, err
}
return dynamic.NewForConfig(config)
}
// InjectedInterface creates a new kubernetes.Interface using the injected kubeconfig
func InjectedInterface() (kubernetes.Interface, error) {
if kubernetesInterface != nil {
return kubernetesInterface, nil
}
ki, err := NewInterfaceForKubeconfig(InjectedKubeConfig)
if err != nil {
return nil, err
}
kubernetesInterface = ki
return kubernetesInterface, nil
}
// InjectedDynamic creates a new dynamic.Interface using the injected kubeconfig
func InjectedDynamic() (dynamic.Interface, error) {
if dynamicInterface != nil {
return dynamicInterface, nil
}
di, err := NewDynamicForKubeconfig(InjectedKubeConfig)
if err != nil {
return nil, err
}
dynamicInterface = di
return dynamicInterface, nil
}