Added migrations.d

clitools/pkg/cmd/version/version.go

@@ -1,22 +1,76 @@
-package apply
+package version
 
 import (
+	"encoding/json"
 	"fmt"
 
 	"github.com/spf13/cobra"
 
-	buildInfo "example.com/monok8s/pkg/buildinfo"
+	buildinfo "example.com/monok8s/pkg/buildinfo"
 )
 
+type versionInfo struct {
+	Version     string `json:"version"`
+	GitRevision string `json:"gitRevision"`
+	Timestamp   string `json:"timestamp"`
+	KubeVersion string `json:"kubernetesVersion"`
+}
+
 func NewCmdVersion() *cobra.Command {
+	var (
+		shortOutput      bool
+		jsonOutput       bool
+		kubernetesOutput bool
+	)
+
 	cmd := &cobra.Command{
 		Use:   "version",
-		Short: "Print the version information",
+		Short: "Print version information",
+		Args:  cobra.NoArgs,
 		RunE: func(cmd *cobra.Command, _ []string) error {
+			info := versionInfo{
+				Version:     buildinfo.Version,
+				GitRevision: buildinfo.GitRevision,
+				Timestamp:   buildinfo.Timestamp,
+				KubeVersion: buildinfo.KubeVersion,
+			}
 
-			_, err := fmt.Fprintln(cmd.OutOrStdout(), fmt.Sprintf("%s %s(%s)", buildInfo.Version, buildInfo.GitRevision, buildInfo.Timestamp))
-			return err
+			out := cmd.OutOrStdout()
+
+			switch {
+			case jsonOutput:
+				enc := json.NewEncoder(out)
+				enc.SetIndent("", "  ")
+				return enc.Encode(info)
+
+			case kubernetesOutput:
+				_, err := fmt.Fprintln(out, info.KubeVersion)
+				return err
+
+			case shortOutput:
+				_, err := fmt.Fprintln(out, info.Version)
+				return err
+
+			default:
+				_, err := fmt.Fprintf(
+					out,
+					"Version:    %s\nGit commit: %s\nBuilt at:   %s\nKubernetes: %s\n",
+					info.Version,
+					info.GitRevision,
+					info.Timestamp,
+					info.KubeVersion,
+				)
+				return err
+			}
 		},
 	}
+
+	flags := cmd.Flags()
+	flags.BoolVar(&shortOutput, "short", false, "Show only the application version")
+	flags.BoolVar(&jsonOutput, "json", false, "Show version information as JSON")
+	flags.BoolVarP(&kubernetesOutput, "kubernetes", "k", false, "Show only the Kubernetes version this binary was built for")
+
+	cmd.MarkFlagsMutuallyExclusive("short", "json", "kubernetes")
+
 	return cmd
 }