add mpool pending command

cli/cmd.go

@@ -46,4 +46,5 @@ var Commands = []*cli.Command{
 	chainCmd,
 	netCmd,
 	versionCmd,
+	mpoolCmd,
 }

cli/mpool.go

@@ -0,0 +1,35 @@
+package cli
+
+import (
+	"fmt"
+
+	"gopkg.in/urfave/cli.v2"
+)
+
+var mpoolCmd = &cli.Command{
+	Name:  "mpool",
+	Usage: "Manage message pool",
+	Subcommands: []*cli.Command{
+		mpoolPending,
+	},
+}
+
+var mpoolPending = &cli.Command{
+	Name:  "pending",
+	Usage: "Get pending messages",
+	Action: func(cctx *cli.Context) error {
+		api := getApi(cctx)
+		ctx := reqContext(cctx)
+
+		msgs, err := api.MpoolPending(ctx)
+		if err != nil {
+			return err
+		}
+
+		for _, msg := range msgs {
+			fmt.Println(msg)
+		}
+
+		return nil
+	},
+}