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kubernetes.go
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kubernetes.go
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package ident
import (
"context"
"github.com/rancher/opni/pkg/util"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
)
type kubernetesProvider struct {
KubernetesIdentOptions
clientset *kubernetes.Clientset
}
type KubernetesIdentOptions struct {
restConfig *rest.Config
}
type KubernetesIdentOption func(*KubernetesIdentOptions)
func (o *KubernetesIdentOptions) apply(opts ...KubernetesIdentOption) {
for _, op := range opts {
op(o)
}
}
func WithRestConfig(rc *rest.Config) KubernetesIdentOption {
return func(o *KubernetesIdentOptions) {
o.restConfig = rc
}
}
func NewKubernetesProvider(opts ...KubernetesIdentOption) Provider {
options := KubernetesIdentOptions{}
options.apply(opts...)
if options.restConfig == nil {
options.restConfig = util.Must(rest.InClusterConfig())
}
cs := kubernetes.NewForConfigOrDie(options.restConfig)
return &kubernetesProvider{
clientset: cs,
}
}
func (p *kubernetesProvider) UniqueIdentifier(ctx context.Context) (string, error) {
ns, err := p.clientset.CoreV1().
Namespaces().
Get(ctx, "kube-system", metav1.GetOptions{})
if err != nil {
return "", err
}
return string(ns.GetUID()), nil
}
func init() {
util.Must(RegisterProvider("kubernetes", func() Provider {
return NewKubernetesProvider()
}))
}