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tx.go
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tx.go
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package cli
import (
"encoding/hex"
"fmt"
"strconv"
"strings"
"github.com/spf13/cobra"
"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"
tmtime "github.com/cometbft/cometbft/types/time"
"github.com/kava-labs/kava/x/bep3/types"
)
// GetTxCmd returns the transaction commands for this module
func GetTxCmd() *cobra.Command {
bep3TxCmd := &cobra.Command{
Use: "bep3",
Short: "bep3 transactions subcommands",
DisableFlagParsing: true,
SuggestionsMinimumDistance: 2,
RunE: client.ValidateCmd,
}
cmds := []*cobra.Command{
GetCmdCreateAtomicSwap(),
GetCmdClaimAtomicSwap(),
GetCmdRefundAtomicSwap(),
}
for _, cmd := range cmds {
flags.AddTxFlagsToCmd(cmd)
}
bep3TxCmd.AddCommand(cmds...)
return bep3TxCmd
}
// GetCmdCreateAtomicSwap cli command for creating atomic swaps
func GetCmdCreateAtomicSwap() *cobra.Command {
return &cobra.Command{
Use: "create [to] [recipient-other-chain] [sender-other-chain] [timestamp] [coins] [height-span]",
Short: "create a new atomic swap",
Example: fmt.Sprintf("%s tx %s create kava1xy7hrjy9r0algz9w3gzm8u6mrpq97kwta747gj bnb1urfermcg92dwq36572cx4xg84wpk3lfpksr5g7 bnb1uky3me9ggqypmrsvxk7ur6hqkzq7zmv4ed4ng7 now 100bnb 270 --from validator",
version.AppName, types.ModuleName),
Args: cobra.ExactArgs(6),
RunE: func(cmd *cobra.Command, args []string) error {
clientCtx, err := client.GetClientTxContext(cmd)
if err != nil {
return err
}
from := clientCtx.GetFromAddress() // same as Kava executor's deputy address
to, err := sdk.AccAddressFromBech32(args[0])
if err != nil {
return err
}
recipientOtherChain := args[1] // same as the other executor's deputy address
senderOtherChain := args[2]
// Timestamp defaults to time.Now() unless it's explicitly set
var timestamp int64
if strings.Compare(args[3], "now") == 0 {
timestamp = tmtime.Now().Unix()
} else {
timestamp, err = strconv.ParseInt(args[3], 10, 64)
if err != nil {
return err
}
}
// Generate cryptographically strong pseudo-random number
randomNumber, err := types.GenerateSecureRandomNumber()
if err != nil {
return err
}
randomNumberHash := types.CalculateRandomHash(randomNumber, timestamp)
// Print random number, timestamp, and hash to user's console
fmt.Printf("\nRandom number: %s\n", hex.EncodeToString(randomNumber))
fmt.Printf("Timestamp: %d\n", timestamp)
fmt.Printf("Random number hash: %s\n\n", hex.EncodeToString(randomNumberHash))
coins, err := sdk.ParseCoinsNormalized(args[4])
if err != nil {
return err
}
heightSpan, err := strconv.ParseUint(args[5], 10, 64)
if err != nil {
return err
}
msg := types.NewMsgCreateAtomicSwap(
from.String(), to.String(), recipientOtherChain, senderOtherChain,
randomNumberHash, timestamp, coins, heightSpan,
)
err = msg.ValidateBasic()
if err != nil {
return err
}
return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), &msg)
},
}
}
// GetCmdClaimAtomicSwap cli command for claiming an atomic swap
func GetCmdClaimAtomicSwap() *cobra.Command {
return &cobra.Command{
Use: "claim [swap-id] [random-number]",
Short: "claim coins in an atomic swap using the secret number",
Example: fmt.Sprintf(
"%s tx %s claim 6682c03cc3856879c8fb98c9733c6b0c30758299138166b6523fe94628b1d3af 56f13e6a5cd397447f8b5f8c82fdb5bbf56127db75269f5cc14e50acd8ac9a4c --from accA",
version.AppName, types.ModuleName,
),
Args: cobra.ExactArgs(2),
RunE: func(cmd *cobra.Command, args []string) error {
clientCtx, err := client.GetClientTxContext(cmd)
if err != nil {
return err
}
from := clientCtx.GetFromAddress()
swapID, err := hex.DecodeString(args[0])
if err != nil {
return err
}
if len(strings.TrimSpace(args[1])) == 0 {
return fmt.Errorf("random-number cannot be empty")
}
randomNumber, err := hex.DecodeString(args[1])
if err != nil {
return err
}
msg := types.NewMsgClaimAtomicSwap(from.String(), swapID, randomNumber)
err = msg.ValidateBasic()
if err != nil {
return err
}
return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), &msg)
},
}
}
// GetCmdRefundAtomicSwap cli command for claiming an atomic swap
func GetCmdRefundAtomicSwap() *cobra.Command {
return &cobra.Command{
Use: "refund [swap-id]",
Short: "refund the coins in an atomic swap",
Example: fmt.Sprintf(
"%s tx %s refund 6682c03cc3856879c8fb98c9733c6b0c30758299138166b6523fe94628b1d3af --from accA",
version.AppName, types.ModuleName,
),
Args: cobra.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
clientCtx, err := client.GetClientTxContext(cmd)
if err != nil {
return err
}
from := clientCtx.GetFromAddress()
swapID, err := hex.DecodeString(args[0])
if err != nil {
return err
}
msg := types.NewMsgRefundAtomicSwap(from.String(), swapID)
err = msg.ValidateBasic()
if err != nil {
return err
}
return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), &msg)
},
}
}