chore: add cli cmd to incentivize existing packet (async) (#965)

* chore: add cli to incentivize existing packets

* Update modules/apps/29-fee/client/cli/cli.go

* Update modules/apps/29-fee/client/cli/cli.go

Co-authored-by: Aditya <adityasripal@gmail.com>

* chore: update cli example

Co-authored-by: Aditya <adityasripal@gmail.com>

modules/apps/29-fee/client/cli/cli.go

@@ -25,14 +25,14 @@ func GetQueryCmd() *cobra.Command {
 func NewTxCmd() *cobra.Command {
 	txCmd := &cobra.Command{
 		Use:                        "ibc-fee",
-		Short:                      "", // TODO
+		Short:                      "Transaction subcommand for IBC relayer incentivization",
 		DisableFlagParsing:         true,
 		SuggestionsMinimumDistance: 2,
 		RunE:                       client.ValidateCmd,
 	}
 
 	txCmd.AddCommand(
-	// TODO
+		NewPayPacketFeeAsyncTxCmd(),
 	)
 
 	return txCmd

modules/apps/29-fee/client/cli/tx.go

@@ -1,3 +1,99 @@
 package cli
 
-// TODO
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/client/tx"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/version"
+	"github.com/spf13/cobra"
+
+	"github.com/cosmos/ibc-go/v3/modules/apps/29-fee/types"
+	channeltypes "github.com/cosmos/ibc-go/v3/modules/core/04-channel/types"
+)
+
+const (
+	flagRecvFee    = "recv-fee"
+	flagAckFee     = "ack-fee"
+	flagTimeoutFee = "timeout-fee"
+)
+
+// NewPayPacketFeeAsyncTxCmd returns the command to create a MsgPayPacketFeeAsync
+func NewPayPacketFeeAsyncTxCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "pay-packet-fee [src-port] [src-channel] [sequence]",
+		Short:   "Pay a fee to incentivize an existing IBC packet",
+		Long:    strings.TrimSpace(`Pay a fee to incentivize an existing IBC packet.`),
+		Example: fmt.Sprintf("%s tx pay-packet-fee transfer channel-0 1 --recv-fee 10stake --ack-fee 10stake --timeout-fee 10stake", version.AppName),
+		Args:    cobra.ExactArgs(3),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientTxContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			// NOTE: specifying non-nil relayers is currently unsupported
+			var relayers []string
+
+			sender := clientCtx.GetFromAddress().String()
+			seq, err := strconv.ParseUint(args[2], 10, 64)
+			if err != nil {
+				return err
+			}
+
+			packetID := channeltypes.NewPacketId(args[1], args[0], seq)
+
+			recvFeeStr, err := cmd.Flags().GetString(flagRecvFee)
+			if err != nil {
+				return err
+			}
+
+			recvFee, err := sdk.ParseCoinsNormalized(recvFeeStr)
+			if err != nil {
+				return err
+			}
+
+			ackFeeStr, err := cmd.Flags().GetString(flagAckFee)
+			if err != nil {
+				return err
+			}
+
+			ackFee, err := sdk.ParseCoinsNormalized(ackFeeStr)
+			if err != nil {
+				return err
+			}
+
+			timeoutFeeStr, err := cmd.Flags().GetString(flagTimeoutFee)
+			if err != nil {
+				return err
+			}
+
+			timeoutFee, err := sdk.ParseCoinsNormalized(timeoutFeeStr)
+			if err != nil {
+				return err
+			}
+
+			fee := types.Fee{
+				RecvFee:    recvFee,
+				AckFee:     ackFee,
+				TimeoutFee: timeoutFee,
+			}
+
+			identifiedPacketFee := types.NewIdentifiedPacketFee(packetID, fee, sender, relayers)
+
+			msg := types.NewMsgPayPacketFeeAsync(identifiedPacketFee)
+			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), msg)
+		},
+	}
+
+	cmd.Flags().String(flagRecvFee, "", "Fee paid to a relayer for relaying a packet receive.")
+	cmd.Flags().String(flagAckFee, "", "Fee paid to a relayer for relaying a packet acknowledgement.")
+	cmd.Flags().String(flagTimeoutFee, "", "Fee paid to a relayer for relaying a packet timeout.")
+	flags.AddTxFlagsToCmd(cmd)
+
+	return cmd
+}