cli: Add lotus-shed cli for computing frc42 method num

cmd/lotus-shed/actor.go

@@ -34,6 +34,7 @@ var actorCmd = &cli.Command{
 		actorControl,
 		actorProposeChangeWorker,
 		actorConfirmChangeWorker,
+		actorGetMethodNum,
 	},
 }
 
@@ -809,3 +810,24 @@ var actorConfirmChangeWorker = &cli.Command{
 		return nil
 	},
 }
+
+var actorGetMethodNum = &cli.Command{
+	Name:      "generate-method-num",
+	Usage:     "Generate method number from method name",
+	ArgsUsage: "[methodName]",
+	Action: func(cctx *cli.Context) error {
+		if !cctx.Args().Present() {
+			return fmt.Errorf("must pass methodNum")
+		}
+
+		methodName := cctx.Args().First()
+		methodNum, err := builtin.GenerateMethodNum(methodName)
+		if err != nil {
+			return err
+		}
+
+		fmt.Println("Method Num: ", methodNum)
+
+		return nil
+	},
+}