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root.go
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root.go
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package cmd
import (
"github.com/spf13/cobra"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/runtime/schema"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/cli-runtime/pkg/genericclioptions"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes/scheme"
apischeme "sigs.k8s.io/controller-runtime/pkg/scheme"
)
var (
rootCmd *cobra.Command
namespace string
allNamespaces bool
GroupVersion = schema.GroupVersion{Group: "resources.hns.demo", Version: "v1alpha1"}
schemeBuilder = &apischeme.Builder{GroupVersion: GroupVersion}
client *dynamic.DynamicClient
mapper meta.RESTMapper
)
func init() {
utilruntime.Must(schemeBuilder.AddToScheme(scheme.Scheme))
kubecfgFlags := genericclioptions.NewConfigFlags(false)
rootCmd = &cobra.Command{
Use: "kubectl-hns-list",
Short: "list resources in hierarchical namespaces",
PersistentPreRunE: func(c *cobra.Command, args []string) error {
config, err := kubecfgFlags.ToRESTConfig()
if err != nil {
return err
}
// TODO: support --output flag
setTableMediaType(config)
mapper, err = kubecfgFlags.ToRESTMapper()
if err != nil {
return err
}
client, err = dynamic.NewForConfig(config)
if err != nil {
return err
}
return nil
},
SilenceUsage: true,
}
rootCmd.PersistentFlags().StringVarP(&namespace, "namespace", "n", "default", "parent namespace to scope request to")
rootCmd.PersistentFlags().BoolVarP(&allNamespaces, "all-namespaces", "A", false, "list across all namespaces")
rootCmd.AddCommand(getCmd)
}
func Execute() error {
return rootCmd.Execute()
}