forked from chaos-mesh/chaos-mesh
/
restclientgetter.go
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/
restclientgetter.go
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// Copyright 2022 Chaos Mesh Authors.
//
// 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 helm
import (
"github.com/pkg/errors"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/cli-runtime/pkg/genericclioptions"
"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"
)
var _ genericclioptions.RESTClientGetter = &restClientGetter{}
type restClientGetter struct {
clientConfig clientcmd.ClientConfig
}
func NewRESTClientGetter(clientConfig clientcmd.ClientConfig) genericclioptions.RESTClientGetter {
return &restClientGetter{
clientConfig,
}
}
func (getter *restClientGetter) ToRESTConfig() (*rest.Config, error) {
return getter.clientConfig.ClientConfig()
}
func (getter *restClientGetter) ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
restConfig, err := getter.clientConfig.ClientConfig()
if err != nil {
return nil, errors.Wrap(err, "get rest config from client config")
}
client, err := discovery.NewDiscoveryClientForConfig(restConfig)
if err != nil {
return nil, errors.Wrap(err, "create discovery client")
}
return memory.NewMemCacheClient(client), nil
}
func (getter *restClientGetter) ToRESTMapper() (meta.RESTMapper, error) {
discoveryClient, err := getter.ToDiscoveryClient()
if err != nil {
return nil, err
}
mapper := restmapper.NewDeferredDiscoveryRESTMapper(discoveryClient)
expander := restmapper.NewShortcutExpander(mapper, discoveryClient)
return expander, nil
}
func (getter *restClientGetter) ToRawKubeConfigLoader() clientcmd.ClientConfig {
return getter.clientConfig
}