Move kubernetes client processes into plugins

cmd/version.go

@@ -6,34 +6,18 @@ import (
 	"text/tabwriter"
 
 	"github.com/spf13/cobra"
-
-	kube "github.com/ian-howell/airshipctl/pkg/kube"
 )
 
-const versionLong = `Show the versions for the airshipctl tool and its components.
-This includes the following components, in order:
-  * airshipctl client
-  * kubernetes cluster
-`
-
 // NewVersionCommand prints out the versions of airshipctl and its underlying tools
-func NewVersionCommand(out io.Writer, client *kube.Client) *cobra.Command {
+func NewVersionCommand(out io.Writer) *cobra.Command {
 	versionCmd := &cobra.Command{
 		Use:   "version",
-		Short: "Show the version number of airshipctl and its underlying tools",
-		Long:  versionLong,
+		Short: "Show the version number of airshipctl",
 		Run: func(cmd *cobra.Command, args []string) {
 			clientV := clientVersion()
-			kubeV, err := kubeVersion(client)
-			if err != nil {
-				fmt.Fprintf(out, "Could not get kubernetes version")
-				return
-			}
-
 			w := tabwriter.NewWriter(out, 0, 0, 1, ' ', 0)
 			defer w.Flush()
-			fmt.Fprintf(w, "%s:\t%s\n", "client", clientV)
-			fmt.Fprintf(w, "%s:\t%s\n", "kubernetes server", kubeV)
+			fmt.Fprintf(w, "%s:\t%s\n", "airshipctl", clientV)
 		},
 	}
 	return versionCmd
@@ -43,14 +27,3 @@ func clientVersion() string {
 	// TODO(howell): There's gotta be a smarter way to do this
 	return "v0.1.0"
 }
-
-func kubeVersion(client *kube.Client) (string, error) {
-	if client == nil {
-		return "could not connect to a kubernetes cluster", nil
-	}
-	version, err := client.Discovery().ServerVersion()
-	if err != nil {
-		return "", err
-	}
-	return version.String(), nil
-}