add new command

cmd/tendermint/commands/app_version.go

@@ -0,0 +1,44 @@
+package commands
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/spf13/cobra"
+)
+
+var SetAppVersionCommand = &cobra.Command{
+	Use:   "set-app-version",
+	Short: "sets the app version",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		// use the parsed config to load the block and state store
+		blockStore, stateStore, err := loadStateAndBlockStore(config)
+		if err != nil {
+			fmt.Errorf("error loading data: %w", err)
+		}
+		defer func() {
+			_ = blockStore.Close()
+			_ = stateStore.Close()
+		}()
+
+		state, err := stateStore.Load()
+		if err != nil {
+			return fmt.Errorf("error returning last state: %w", err)
+		}
+
+		newVersion, err := strconv.Atoi(args[0])
+		if err != nil {
+			return fmt.Errorf("error parsing argument: %w", err)
+		}
+
+		state.Version.Consensus.App = uint64(newVersion)
+		err = stateStore.Save(state)
+		if err != nil {
+			return fmt.Errorf("error saving state: %w", err)
+		}
+
+		fmt.Println("Set app version")
+		return nil
+	},
+}

cmd/tendermint/main.go

@@ -28,6 +28,7 @@ func main() {
 		cmd.GenNodeKeyCmd,
 		cmd.VersionCmd,
 		cmd.RollbackStateCmd,
+		cmd.SetAppVersionCommand,
 		debug.DebugCmd,
 		cli.NewCompletionCmd(rootCmd, true),
 	)