constellation/coordinator/kubernetes/k8sapi/kubectl/client/restclient.go

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package client
import (
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/client-go/discovery"
"k8s.io/client-go/discovery/cached/memory"
"k8s.io/client-go/rest"
"k8s.io/client-go/restmapper"
"k8s.io/client-go/tools/clientcmd"
)
// restClientGetter implements k8s.io/cli-runtime/pkg/resource.RESTClientGetter.
type restClientGetter struct {
clientconfig clientcmd.ClientConfig
}
// newRESTClientGetter creates a new restClientGetter using a kubeconfig.
func newRESTClientGetter(kubeconfig []byte) (*restClientGetter, error) {
clientconfig, err := clientcmd.NewClientConfigFromBytes(kubeconfig)
if err != nil {
return nil, err
}
rawconfig, err := clientconfig.RawConfig()
if err != nil {
return nil, err
}
clientconfig = clientcmd.NewDefaultClientConfig(rawconfig, &clientcmd.ConfigOverrides{})
return &restClientGetter{clientconfig}, nil
}
// ToRESTConfig returns k8s REST client config.
func (r *restClientGetter) ToRESTConfig() (*rest.Config, error) {
return r.clientconfig.ClientConfig()
}
// ToDiscoveryClient creates new k8s discovery client from restClientGetter.
func (r *restClientGetter) ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
restconfig, err := r.clientconfig.ClientConfig()
if err != nil {
return nil, err
}
dc, err := discovery.NewDiscoveryClientForConfig(restconfig)
if err != nil {
return nil, err
}
return memory.NewMemCacheClient(dc), nil
}
// ToRESTMapper creates new k8s RESTMapper from restClientGetter.
func (r *restClientGetter) ToRESTMapper() (meta.RESTMapper, error) {
dc, err := r.ToDiscoveryClient()
if err != nil {
return nil, err
}
return restmapper.NewDeferredDiscoveryRESTMapper(dc), nil
}
// ToRawKubeConfigLoader returns the inner k8s ClientConfig.
func (r *restClientGetter) ToRawKubeConfigLoader() clientcmd.ClientConfig {
return r.clientconfig
}