feat: add raw ethereum tx CLI (#712)

Closes #709 fix index Apply suggestions from code review Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> fix lint transaction decoding unit test test BuildTx fix lint changelog
2021-11-02 12:20:19 +01:00
parent d1446fc1f4
commit 10c49f7748
6 changed files with 334 additions and 81 deletions
@@ -0,0 +1,111 @@
+package cli
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/client/input"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+
+	rpctypes "github.com/tharsis/ethermint/rpc/ethereum/types"
+	"github.com/tharsis/ethermint/x/evm/types"
+)
+
+// GetTxCmd returns the transaction commands for this module
+func GetTxCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:                        types.ModuleName,
+		Short:                      fmt.Sprintf("%s transactions subcommands", types.ModuleName),
+		DisableFlagParsing:         true,
+		SuggestionsMinimumDistance: 2,
+		RunE:                       client.ValidateCmd,
+	}
+	cmd.AddCommand(NewRawTxCmd())
+	return cmd
+}
+
+// NewRawTxCmd command build cosmos transaction from raw ethereum transaction
+func NewRawTxCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "raw [tx-hex]",
+		Short: "Build cosmos transaction from raw ethereum transaction",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			data, err := hexutil.Decode(args[0])
+			if err != nil {
+				return errors.Wrap(err, "failed to decode ethereum tx hex bytes")
+			}
+
+			msg := &types.MsgEthereumTx{}
+			if err := msg.UnmarshalBinary(data); err != nil {
+				return err
+			}
+
+			if err := msg.ValidateBasic(); err != nil {
+				return err
+			}
+
+			clientCtx, err := client.GetClientTxContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			rsp, err := rpctypes.NewQueryClient(clientCtx).Params(cmd.Context(), &types.QueryParamsRequest{})
+			if err != nil {
+				return err
+			}
+
+			tx, err := msg.BuildTx(clientCtx.TxConfig.NewTxBuilder(), rsp.Params.EvmDenom)
+			if err != nil {
+				return err
+			}
+
+			if clientCtx.GenerateOnly {
+				json, err := clientCtx.TxConfig.TxJSONEncoder()(tx)
+				if err != nil {
+					return err
+				}
+
+				return clientCtx.PrintString(fmt.Sprintf("%s\n", json))
+			}
+
+			if !clientCtx.SkipConfirm {
+				out, err := clientCtx.TxConfig.TxJSONEncoder()(tx)
+				if err != nil {
+					return err
+				}
+
+				_, _ = fmt.Fprintf(os.Stderr, "%s\n\n", out)
+
+				buf := bufio.NewReader(os.Stdin)
+				ok, err := input.GetConfirmation("confirm transaction before signing and broadcasting", buf, os.Stderr)
+
+				if err != nil || !ok {
+					_, _ = fmt.Fprintf(os.Stderr, "%s\n", "canceled transaction")
+					return err
+				}
+			}
+
+			txBytes, err := clientCtx.TxConfig.TxEncoder()(tx)
+			if err != nil {
+				return err
+			}
+
+			// broadcast to a Tendermint node
+			res, err := clientCtx.BroadcastTx(txBytes)
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddTxFlagsToCmd(cmd)
+	return cmd
+}