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e7c7e35f51
These backups could be used in case an upgrade misbehaves after helm declared it as successful. The manual backups are required as helm-rollback won't touch custom resources and changes to CRDs delete resources of the old version.
71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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package kubectl
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import (
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/client-go/discovery"
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"k8s.io/client-go/discovery/cached/memory"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/restmapper"
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"k8s.io/client-go/tools/clientcmd"
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)
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// restClientGetter implements k8s.io/cli-runtime/pkg/resource.RESTClientGetter.
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type restClientGetter struct {
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clientconfig clientcmd.ClientConfig
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}
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// newRESTClientGetter creates a new restClientGetter using a kubeconfig.
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func newRESTClientGetter(kubeconfig []byte) (*restClientGetter, error) {
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clientconfig, err := clientcmd.NewClientConfigFromBytes(kubeconfig)
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if err != nil {
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return nil, err
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}
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rawconfig, err := clientconfig.RawConfig()
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if err != nil {
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return nil, err
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}
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clientconfig = clientcmd.NewDefaultClientConfig(rawconfig, &clientcmd.ConfigOverrides{})
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return &restClientGetter{clientconfig}, nil
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}
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// ToRESTConfig returns k8s REST client config.
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func (r *restClientGetter) ToRESTConfig() (*rest.Config, error) {
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return r.clientconfig.ClientConfig()
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}
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// ToDiscoveryClient creates new k8s discovery client from restClientGetter.
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func (r *restClientGetter) ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
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restconfig, err := r.clientconfig.ClientConfig()
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if err != nil {
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return nil, err
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}
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dc, err := discovery.NewDiscoveryClientForConfig(restconfig)
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if err != nil {
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return nil, err
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}
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return memory.NewMemCacheClient(dc), nil
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}
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// ToRESTMapper creates new k8s RESTMapper from restClientGetter.
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func (r *restClientGetter) ToRESTMapper() (meta.RESTMapper, error) {
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dc, err := r.ToDiscoveryClient()
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if err != nil {
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return nil, err
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}
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return restmapper.NewDeferredDiscoveryRESTMapper(dc), nil
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}
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// ToRawKubeConfigLoader returns the inner k8s ClientConfig.
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func (r *restClientGetter) ToRawKubeConfigLoader() clientcmd.ClientConfig {
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return r.clientconfig
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}
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