add version sub command

Signed-off-by: Jeff <zw0948@gmail.com>

cmd/ks-apiserver/app/server.go

@@ -28,6 +28,7 @@ import (
 	apiserverconfig "kubesphere.io/kubesphere/pkg/apiserver/config"
 	"kubesphere.io/kubesphere/pkg/utils/signals"
 	"kubesphere.io/kubesphere/pkg/utils/term"
+	"kubesphere.io/kubesphere/pkg/version"
 
 	tracing "kubesphere.io/kubesphere/pkg/kapis/servicemesh/metrics/v1alpha2"
 )
@@ -73,6 +74,17 @@ cluster's shared state through which all other components interact.`,
 		fmt.Fprintf(cmd.OutOrStdout(), "%s\n\n"+usageFmt, cmd.Long, cmd.UseLine())
 		cliflag.PrintSections(cmd.OutOrStdout(), namedFlagSets, cols)
 	})
+
+	versionCmd := &cobra.Command{
+		Use:   "version",
+		Short: "Print the version of KubeSphere ks-apiserver",
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Println(version.Get())
+		},
+	}
+
+	cmd.AddCommand(versionCmd)
+
 	return cmd
 }
 

pkg/version/version.go

@@ -17,6 +17,7 @@ limitations under the License.
 package version
 
 import (
+	"encoding/json"
 	"fmt"
 	"runtime"
 
@@ -45,14 +46,20 @@ type Info struct {
 	Kubernetes   *apimachineryversion.Info `json:"kubernetes,omitempty"`
 }
 
+func (info Info) String() string {
+	jsonString, _ := json.Marshal(info)
+	return string(jsonString)
+}
+
 // Get returns the overall codebase version. It's for
 // detecting what code a binary was built from.
 func Get() Info {
 	// These variables typically come from -ldflags settings and
 	// in their absence fallback to the default settings
 	return Info{
-		GitVersion: gitVersion,
-
+		GitVersion:   gitVersion,
+		GitMajor:     gitMajor,
+		GitMinor:     gitMinor,
 		GitCommit:    gitCommit,
 		GitTreeState: gitTreeState,
 		BuildDate:    buildDate,