karmada/pkg/karmadactl/karmadactl.go

47 lines
1.4 KiB
Go

package karmadactl
import (
"flag"
"io"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"k8s.io/client-go/tools/clientcmd"
apiserverflag "k8s.io/component-base/cli/flag"
)
// NewKarmadaCtlCommand creates the `karmadactl` command.
func NewKarmadaCtlCommand(out io.Writer) *cobra.Command {
// Parent command to which all sub-commands are added.
rootCmd := &cobra.Command{
Use: "karmadactl",
Short: "karmadactl controls a Kubernetes Cluster Federation.",
Long: "karmadactl controls a Kubernetes Cluster Federation.",
RunE: runHelp,
}
// Add the command line flags from other dependencies (e.g., klog), but do not
// warn if they contain underscores.
pflag.CommandLine.SetNormalizeFunc(apiserverflag.WordSepNormalizeFunc)
pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
rootCmd.PersistentFlags().AddFlagSet(pflag.CommandLine)
// From this point and forward we get warnings on flags that contain "_" separators
rootCmd.SetGlobalNormalizationFunc(apiserverflag.WarnWordSepNormalizeFunc)
// Prevent klog errors about logging before parsing.
_ = flag.CommandLine.Parse(nil)
karmadaConfig := NewKarmadaConfig(clientcmd.NewDefaultPathOptions())
rootCmd.AddCommand(NewCmdJoin(out, karmadaConfig))
rootCmd.AddCommand(NewCmdUnjoin(out, karmadaConfig))
rootCmd.AddCommand(NewCmdVersion(out))
return rootCmd
}
func runHelp(cmd *cobra.Command, args []string) error {
return cmd.Help()
}