[fix] fix code review issues

Author: saicaca

tools-v2/pkg/cli/command/curvebs/status/volume/snapshot/snapshot.go

@@ -60,9 +60,10 @@ type SnapshotInfoData struct {
 }
 
 const (
-	SNAPSHOT_SUBURI               = "/SnapshotCloneService"
-	ACTION_GET_FILE_SNAPSHOT_LIST = "GetFileSnapshotList"
-	ENTRIES_PER_TIME              = 100
+	SNAPSHOT_QUERY_LIMIT          = 100
+	SNAPSHOT_QUERY_INITIAL_OFFSET = 0
+	SNAPSHOT_QUERY_CODE_SUCCESS   = "0"
+	LENGTH_EMPTY                  = 0
 )
 
 const (
@@ -114,7 +115,7 @@ func NewVolumeSnapshotCommand() *SnapshotCommand {
 	vsCmd := &SnapshotCommand{
 		FinalCurveCmd: basecmd.FinalCurveCmd{
 			Use:   "snapshot",
-			Short: "create snapshot of curvebs volume",
+			Short: "show the snapshot status",
 		},
 	}
 	basecmd.NewFinalCurveCli(&vsCmd.FinalCurveCmd, vsCmd)
@@ -142,13 +143,10 @@ func (sCmd *SnapshotCommand) RunCommand(cmd *cobra.Command, args []string) error
 		cobrautil.QueryAction: cobrautil.ActionGetFileSnapshotList,
 		cobrautil.QueryUser:   sCmd.user,
 		cobrautil.QueryFile:   sCmd.filename,
-		cobrautil.QueryLimit:  100,
-		cobrautil.QueryOffset: 0,
+		cobrautil.QueryLimit:  SNAPSHOT_QUERY_LIMIT,
+		cobrautil.QueryOffset: SNAPSHOT_QUERY_INITIAL_OFFSET,
 	}
 	count := make(map[int]int)
-	for _, s := range statusList {
-		count[s] = 0
-	}
 	for {
 		subUri := cobrautil.NewSnapshotQuerySubUri(params)
 
@@ -162,10 +160,10 @@ func (sCmd *SnapshotCommand) RunCommand(cmd *cobra.Command, args []string) error
 		if err := json.Unmarshal([]byte(result), &resp); err != nil {
 			return err
 		}
-		if resp.Code != "0" {
+		if resp.Code != SNAPSHOT_QUERY_CODE_SUCCESS {
 			return fmt.Errorf("get clone list fail, error code: %s", resp.Code)
 		}
-		if len(resp.Snapshots) == 0 {
+		if len(resp.Snapshots) == LENGTH_EMPTY {
 			break
 		}
 		for _, s := range resp.Snapshots {