status-go/transactions/types.go

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package transactions
import (
"bytes"
"context"
"errors"
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"math/big"
ethereum "github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/status-im/status-go/eth-node/types"
wallet_common "github.com/status-im/status-go/services/wallet/common"
)
var (
// ErrInvalidSendTxArgs is returned when the structure of SendTxArgs is ambigious.
ErrInvalidSendTxArgs = errors.New("transaction arguments are invalid")
// ErrUnexpectedArgs is returned when args are of unexpected length.
ErrUnexpectedArgs = errors.New("unexpected args")
//ErrInvalidTxSender is returned when selected account is different than From field.
ErrInvalidTxSender = errors.New("transaction can only be send by its creator")
//ErrAccountDoesntExist is sent when provided sub-account is not stored in database.
ErrAccountDoesntExist = errors.New("account doesn't exist")
)
// PendingNonceProvider provides information about nonces.
type PendingNonceProvider interface {
PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)
}
// GasCalculator provides methods for estimating and pricing gas.
type GasCalculator interface {
ethereum.GasEstimator
ethereum.GasPricer
}
// SendTxArgs represents the arguments to submit a new transaction into the transaction pool.
// This struct is based on go-ethereum's type in internal/ethapi/api.go, but we have freedom
// over the exact layout of this struct.
type SendTxArgs struct {
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From types.Address `json:"from"`
To *types.Address `json:"to"`
Gas *hexutil.Uint64 `json:"gas"`
GasPrice *hexutil.Big `json:"gasPrice"`
Value *hexutil.Big `json:"value"`
Nonce *hexutil.Uint64 `json:"nonce"`
MaxFeePerGas *hexutil.Big `json:"maxFeePerGas"`
MaxPriorityFeePerGas *hexutil.Big `json:"maxPriorityFeePerGas"`
// We keep both "input" and "data" for backward compatibility.
// "input" is a preferred field.
// see `vendor/github.com/ethereum/go-ethereum/internal/ethapi/api.go:1107`
Input types.HexBytes `json:"input"`
Data types.HexBytes `json:"data"`
// additional data
MultiTransactionID wallet_common.MultiTransactionIDType
Symbol string
}
// Valid checks whether this structure is filled in correctly.
func (args SendTxArgs) Valid() bool {
// if at least one of the fields is empty, it is a valid struct
if isNilOrEmpty(args.Input) || isNilOrEmpty(args.Data) {
return true
}
// we only allow both fields to present if they have the same data
return bytes.Equal(args.Input, args.Data)
}
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// IsDynamicFeeTx checks whether dynamic fee parameters are set for the tx
func (args SendTxArgs) IsDynamicFeeTx() bool {
return args.MaxFeePerGas != nil && args.MaxPriorityFeePerGas != nil
}
// GetInput returns either Input or Data field's value dependent on what is filled.
func (args SendTxArgs) GetInput() types.HexBytes {
if !isNilOrEmpty(args.Input) {
return args.Input
}
return args.Data
}
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func (args SendTxArgs) ToTransactOpts(signerFn bind.SignerFn) *bind.TransactOpts {
var gasFeeCap *big.Int
if args.MaxFeePerGas != nil {
gasFeeCap = (*big.Int)(args.MaxFeePerGas)
}
var gasTipCap *big.Int
if args.MaxPriorityFeePerGas != nil {
gasTipCap = (*big.Int)(args.MaxPriorityFeePerGas)
}
var nonce *big.Int
if args.Nonce != nil {
nonce = new(big.Int).SetUint64((uint64)(*args.Nonce))
}
var gasPrice *big.Int
if args.GasPrice != nil {
gasPrice = (*big.Int)(args.GasPrice)
}
var gasLimit uint64
if args.Gas != nil {
gasLimit = uint64(*args.Gas)
}
var noSign = false
if signerFn == nil {
noSign = true
}
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return &bind.TransactOpts{
From: common.Address(args.From),
Signer: signerFn,
GasPrice: gasPrice,
GasLimit: gasLimit,
GasFeeCap: gasFeeCap,
GasTipCap: gasTipCap,
Nonce: nonce,
NoSign: noSign,
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}
}
func isNilOrEmpty(bytes types.HexBytes) bool {
return len(bytes) == 0
}