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tx_args.go
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tx_args.go
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package types
import (
"errors"
"fmt"
"math/big"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/math"
ethtypes "github.com/ethereum/go-ethereum/core/types"
)
// TransactionArgs represents the arguments to construct a new transaction
// or a message call using JSON-RPC.
// Duplicate struct definition since geth struct is in internal package
// Ref: https://github.com/ethereum/go-ethereum/blob/release/1.10.4/internal/ethapi/transaction_args.go#L36
type TransactionArgs struct {
From *common.Address `json:"from"`
To *common.Address `json:"to"`
Gas *hexutil.Uint64 `json:"gas"`
GasPrice *hexutil.Big `json:"gasPrice"`
MaxFeePerGas *hexutil.Big `json:"maxFeePerGas"`
MaxPriorityFeePerGas *hexutil.Big `json:"maxPriorityFeePerGas"`
Value *hexutil.Big `json:"value"`
Nonce *hexutil.Uint64 `json:"nonce"`
// We accept "data" and "input" for backwards-compatibility reasons.
// "input" is the newer name and should be preferred by clients.
// Issue detail: https://github.com/ethereum/go-ethereum/issues/15628
Data *hexutil.Bytes `json:"data"`
Input *hexutil.Bytes `json:"input"`
// Introduced by AccessListTxType transaction.
AccessList *ethtypes.AccessList `json:"accessList,omitempty"`
ChainID *hexutil.Big `json:"chainId,omitempty"`
}
// String return the struct in a string format
func (args *TransactionArgs) String() string {
// Todo: There is currently a bug with hexutil.Big when the value its nil, printing would trigger an exception
return fmt.Sprintf("TransactionArgs{From:%v, To:%v, Gas:%v,"+
" Nonce:%v, Data:%v, Input:%v, AccessList:%v}",
args.From,
args.To,
args.Gas,
args.Nonce,
args.Data,
args.Input,
args.AccessList)
}
// ToTransaction converts the arguments to an ethereum transaction.
// This assumes that setTxDefaults has been called.
func (args *TransactionArgs) ToTransaction() *MsgEthereumTx {
var (
chainID, value, gasPrice, maxFeePerGas, maxPriorityFeePerGas sdk.Int
gas, nonce uint64
from, to string
)
// Set sender address or use zero address if none specified.
if args.ChainID != nil {
chainID = sdk.NewIntFromBigInt(args.ChainID.ToInt())
}
if args.Nonce != nil {
nonce = uint64(*args.Nonce)
}
if args.Gas != nil {
gas = uint64(*args.Gas)
}
if args.GasPrice != nil {
gasPrice = sdk.NewIntFromBigInt(args.GasPrice.ToInt())
}
if args.MaxFeePerGas != nil {
maxFeePerGas = sdk.NewIntFromBigInt(args.MaxFeePerGas.ToInt())
}
if args.MaxPriorityFeePerGas != nil {
maxPriorityFeePerGas = sdk.NewIntFromBigInt(args.MaxPriorityFeePerGas.ToInt())
}
if args.GasPrice != nil {
gasPrice = sdk.NewIntFromBigInt(args.GasPrice.ToInt())
}
if args.Value != nil {
value = sdk.NewIntFromBigInt(args.Value.ToInt())
}
if args.To != nil {
to = args.To.Hex()
}
var data TxData
switch {
case args.MaxFeePerGas != nil:
al := AccessList{}
if args.AccessList != nil {
al = NewAccessList(args.AccessList)
}
data = &DynamicFeeTx{
To: to,
ChainID: &chainID,
Nonce: nonce,
GasLimit: gas,
GasFeeCap: &maxFeePerGas,
GasTipCap: &maxPriorityFeePerGas,
Amount: &value,
Data: args.GetData(),
Accesses: al,
}
case args.AccessList != nil:
data = &AccessListTx{
To: to,
ChainID: &chainID,
Nonce: nonce,
GasLimit: gas,
GasPrice: &gasPrice,
Amount: &value,
Data: args.GetData(),
Accesses: NewAccessList(args.AccessList),
}
default:
data = &LegacyTx{
To: to,
Nonce: nonce,
GasLimit: gas,
GasPrice: &gasPrice,
Amount: &value,
Data: args.GetData(),
}
}
any, err := PackTxData(data)
if err != nil {
return nil
}
if args.From != nil {
from = args.From.Hex()
}
return &MsgEthereumTx{
Data: any,
From: from,
}
}
// ToMessage converts the arguments to the Message type used by the core evm.
// This assumes that setTxDefaults has been called.
func (args *TransactionArgs) ToMessage(globalGasCap uint64, baseFee *big.Int) (ethtypes.Message, error) {
// Reject invalid combinations of pre- and post-1559 fee styles
if args.GasPrice != nil && (args.MaxFeePerGas != nil || args.MaxPriorityFeePerGas != nil) {
return ethtypes.Message{}, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified")
}
// Set sender address or use zero address if none specified.
addr := args.GetFrom()
// Set default gas & gas price if none were set
gas := globalGasCap
if gas == 0 {
gas = uint64(math.MaxUint64 / 2)
}
if args.Gas != nil {
gas = uint64(*args.Gas)
}
if globalGasCap != 0 && globalGasCap < gas {
gas = globalGasCap
}
var (
gasPrice *big.Int
gasFeeCap *big.Int
gasTipCap *big.Int
)
if baseFee == nil {
// If there's no basefee, then it must be a non-1559 execution
gasPrice = new(big.Int)
if args.GasPrice != nil {
gasPrice = args.GasPrice.ToInt()
}
gasFeeCap, gasTipCap = gasPrice, gasPrice
} else {
// A basefee is provided, necessitating 1559-type execution
if args.GasPrice != nil {
// User specified the legacy gas field, convert to 1559 gas typing
gasPrice = args.GasPrice.ToInt()
gasFeeCap, gasTipCap = gasPrice, gasPrice
} else {
// User specified 1559 gas feilds (or none), use those
gasFeeCap = new(big.Int)
if args.MaxFeePerGas != nil {
gasFeeCap = args.MaxFeePerGas.ToInt()
}
gasTipCap = new(big.Int)
if args.MaxPriorityFeePerGas != nil {
gasTipCap = args.MaxPriorityFeePerGas.ToInt()
}
// Backfill the legacy gasPrice for EVM execution, unless we're all zeroes
gasPrice = new(big.Int)
if gasFeeCap.BitLen() > 0 || gasTipCap.BitLen() > 0 {
gasPrice = math.BigMin(new(big.Int).Add(gasTipCap, baseFee), gasFeeCap)
}
}
}
value := new(big.Int)
if args.Value != nil {
value = args.Value.ToInt()
}
data := args.GetData()
var accessList ethtypes.AccessList
if args.AccessList != nil {
accessList = *args.AccessList
}
msg := ethtypes.NewMessage(addr, args.To, 0, value, gas, gasPrice, gasFeeCap, gasTipCap, data, accessList, true)
return msg, nil
}
// GetFrom retrieves the transaction sender address.
func (args *TransactionArgs) GetFrom() common.Address {
if args.From == nil {
return common.Address{}
}
return *args.From
}
// GetData retrieves the transaction calldata. Input field is preferred.
func (args *TransactionArgs) GetData() []byte {
if args.Input != nil {
return *args.Input
}
if args.Data != nil {
return *args.Data
}
return nil
}