455 lines
12 KiB
Go
455 lines
12 KiB
Go
package bridge
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"math"
|
|
"math/big"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum"
|
|
"github.com/ethereum/go-ethereum/accounts/abi"
|
|
"github.com/ethereum/go-ethereum/accounts/abi/bind"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/common/hexutil"
|
|
ethTypes "github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/status-im/status-go/account"
|
|
"github.com/status-im/status-go/contracts"
|
|
"github.com/status-im/status-go/contracts/hop"
|
|
hopBridge "github.com/status-im/status-go/contracts/hop/bridge"
|
|
hopWrapper "github.com/status-im/status-go/contracts/hop/wrapper"
|
|
"github.com/status-im/status-go/eth-node/types"
|
|
"github.com/status-im/status-go/params"
|
|
"github.com/status-im/status-go/rpc"
|
|
"github.com/status-im/status-go/services/wallet/token"
|
|
"github.com/status-im/status-go/transactions"
|
|
)
|
|
|
|
const HopLpFeeBps = 4
|
|
const HopCanonicalTokenIndex = 0
|
|
const HophTokenIndex = 1
|
|
const HopMinBonderFeeUsd = 0.25
|
|
|
|
var HopBondTransferGasLimit = map[uint64]int64{
|
|
1: 165000,
|
|
5: 165000,
|
|
10: 100000000,
|
|
42161: 2500000,
|
|
420: 100000000,
|
|
421613: 2500000,
|
|
}
|
|
var HopSettlementGasLimitPerTx = map[uint64]int64{
|
|
1: 5141,
|
|
5: 5141,
|
|
10: 8545,
|
|
42161: 19843,
|
|
420: 8545,
|
|
421613: 19843,
|
|
}
|
|
var HopBonderFeeBps = map[string]map[uint64]int64{
|
|
"USDC": {
|
|
1: 14,
|
|
5: 14,
|
|
10: 14,
|
|
42161: 14,
|
|
420: 14,
|
|
421613: 14,
|
|
},
|
|
"USDT": {
|
|
1: 26,
|
|
10: 26,
|
|
421613: 26,
|
|
},
|
|
"DAI": {
|
|
1: 26,
|
|
10: 26,
|
|
42161: 26,
|
|
},
|
|
"ETH": {
|
|
1: 5,
|
|
5: 5,
|
|
10: 5,
|
|
42161: 5,
|
|
420: 5,
|
|
421613: 5,
|
|
},
|
|
"WBTC": {
|
|
1: 23,
|
|
10: 23,
|
|
42161: 23,
|
|
},
|
|
}
|
|
|
|
type HopTxArgs struct {
|
|
transactions.SendTxArgs
|
|
ChainID uint64 `json:"chainId"`
|
|
Symbol string `json:"symbol"`
|
|
Recipient common.Address `json:"recipient"`
|
|
Amount *hexutil.Big `json:"amount"`
|
|
BonderFee *hexutil.Big `json:"bonderFee"`
|
|
}
|
|
|
|
type HopBridge struct {
|
|
transactor *transactions.Transactor
|
|
tokenManager *token.Manager
|
|
contractMaker *contracts.ContractMaker
|
|
}
|
|
|
|
func NewHopBridge(rpcClient *rpc.Client, transactor *transactions.Transactor, tokenManager *token.Manager) *HopBridge {
|
|
return &HopBridge{
|
|
contractMaker: &contracts.ContractMaker{RPCClient: rpcClient},
|
|
transactor: transactor,
|
|
tokenManager: tokenManager,
|
|
}
|
|
}
|
|
|
|
func (h *HopBridge) Name() string {
|
|
return "Hop"
|
|
}
|
|
|
|
func (h *HopBridge) Can(from, to *params.Network, token *token.Token, balance *big.Int) (bool, error) {
|
|
if balance.Cmp(big.NewInt(0)) == 0 {
|
|
return false, nil
|
|
}
|
|
|
|
if from.ChainID == to.ChainID {
|
|
return false, nil
|
|
}
|
|
|
|
fees, ok := HopBonderFeeBps[token.Symbol]
|
|
if !ok {
|
|
return false, nil
|
|
}
|
|
|
|
if _, ok := fees[from.ChainID]; !ok {
|
|
return false, nil
|
|
}
|
|
|
|
if _, ok := fees[to.ChainID]; !ok {
|
|
return false, nil
|
|
}
|
|
return true, nil
|
|
}
|
|
|
|
func (h *HopBridge) EstimateGas(fromNetwork *params.Network, toNetwork *params.Network, from common.Address, to common.Address, token *token.Token, amountIn *big.Int) (uint64, error) {
|
|
var input []byte
|
|
value := new(big.Int)
|
|
|
|
now := time.Now()
|
|
deadline := big.NewInt(now.Unix() + 604800)
|
|
|
|
if token.IsNative() {
|
|
value = amountIn
|
|
}
|
|
|
|
contractAddress := h.GetContractAddress(fromNetwork, token)
|
|
if contractAddress == nil {
|
|
return 0, errors.New("contract not found")
|
|
}
|
|
|
|
ctx := context.Background()
|
|
|
|
if fromNetwork.Layer == 1 {
|
|
ABI, err := abi.JSON(strings.NewReader(hopBridge.HopBridgeABI))
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
input, err = ABI.Pack("sendToL2",
|
|
big.NewInt(int64(toNetwork.ChainID)),
|
|
to,
|
|
amountIn,
|
|
big.NewInt(0),
|
|
deadline,
|
|
common.HexToAddress("0x0"),
|
|
big.NewInt(0))
|
|
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
} else {
|
|
ABI, err := abi.JSON(strings.NewReader(hopWrapper.HopWrapperABI))
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
input, err = ABI.Pack("swapAndSend",
|
|
big.NewInt(int64(toNetwork.ChainID)),
|
|
to,
|
|
amountIn,
|
|
big.NewInt(0),
|
|
big.NewInt(0),
|
|
deadline,
|
|
big.NewInt(0),
|
|
deadline)
|
|
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
}
|
|
|
|
ethClient, err := h.contractMaker.RPCClient.EthClient(fromNetwork.ChainID)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
if code, err := ethClient.PendingCodeAt(ctx, *contractAddress); err != nil {
|
|
return 0, err
|
|
} else if len(code) == 0 {
|
|
return 0, bind.ErrNoCode
|
|
}
|
|
|
|
msg := ethereum.CallMsg{
|
|
From: from,
|
|
To: contractAddress,
|
|
Value: value,
|
|
Data: input,
|
|
}
|
|
|
|
estimation, err := ethClient.EstimateGas(ctx, msg)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
increasedEstimation := float64(estimation) * IncreaseEstimatedGasFactor
|
|
return uint64(increasedEstimation), nil
|
|
}
|
|
|
|
func (h *HopBridge) GetContractAddress(network *params.Network, token *token.Token) *common.Address {
|
|
var address common.Address
|
|
if network.Layer == 1 {
|
|
address, _ = hop.L1BridgeContractAddress(network.ChainID, token.Symbol)
|
|
} else {
|
|
address, _ = hop.L2AmmWrapperContractAddress(network.ChainID, token.Symbol)
|
|
}
|
|
|
|
return &address
|
|
}
|
|
|
|
func (h *HopBridge) sendOrBuild(sendArgs *TransactionBridge, signerFn bind.SignerFn) (tx *ethTypes.Transaction, err error) {
|
|
fromNetwork := h.contractMaker.RPCClient.NetworkManager.Find(sendArgs.ChainID)
|
|
if fromNetwork == nil {
|
|
return tx, err
|
|
}
|
|
|
|
nonce, err := h.transactor.NextNonce(h.contractMaker.RPCClient, sendArgs.ChainID, sendArgs.HopTx.From)
|
|
if err != nil {
|
|
return tx, err
|
|
}
|
|
|
|
argNonce := hexutil.Uint64(nonce)
|
|
sendArgs.HopTx.Nonce = &argNonce
|
|
|
|
token := h.tokenManager.FindToken(fromNetwork, sendArgs.HopTx.Symbol)
|
|
if fromNetwork.Layer == 1 {
|
|
tx, err = h.sendToL2(sendArgs.ChainID, sendArgs.HopTx, signerFn, token)
|
|
return tx, err
|
|
}
|
|
tx, err = h.swapAndSend(sendArgs.ChainID, sendArgs.HopTx, signerFn, token)
|
|
return tx, err
|
|
}
|
|
|
|
func (h *HopBridge) Send(sendArgs *TransactionBridge, verifiedAccount *account.SelectedExtKey) (hash types.Hash, err error) {
|
|
tx, err := h.sendOrBuild(sendArgs, getSigner(sendArgs.ChainID, sendArgs.HopTx.From, verifiedAccount))
|
|
if err != nil {
|
|
return types.Hash{}, err
|
|
}
|
|
return types.Hash(tx.Hash()), nil
|
|
}
|
|
|
|
func (h *HopBridge) BuildTransaction(sendArgs *TransactionBridge) (*ethTypes.Transaction, error) {
|
|
return h.sendOrBuild(sendArgs, nil)
|
|
}
|
|
|
|
func (h *HopBridge) sendToL2(chainID uint64, hopArgs *HopTxArgs, signerFn bind.SignerFn, token *token.Token) (tx *ethTypes.Transaction, err error) {
|
|
bridge, err := h.contractMaker.NewHopL1Bridge(chainID, hopArgs.Symbol)
|
|
if err != nil {
|
|
return tx, err
|
|
}
|
|
txOpts := hopArgs.ToTransactOpts(signerFn)
|
|
if token.IsNative() {
|
|
txOpts.Value = (*big.Int)(hopArgs.Amount)
|
|
}
|
|
now := time.Now()
|
|
deadline := big.NewInt(now.Unix() + 604800)
|
|
tx, err = bridge.SendToL2(
|
|
txOpts,
|
|
big.NewInt(int64(hopArgs.ChainID)),
|
|
hopArgs.Recipient,
|
|
hopArgs.Amount.ToInt(),
|
|
big.NewInt(0),
|
|
deadline,
|
|
common.HexToAddress("0x0"),
|
|
big.NewInt(0),
|
|
)
|
|
|
|
return tx, err
|
|
}
|
|
|
|
func (h *HopBridge) swapAndSend(chainID uint64, hopArgs *HopTxArgs, signerFn bind.SignerFn, token *token.Token) (tx *ethTypes.Transaction, err error) {
|
|
ammWrapper, err := h.contractMaker.NewHopL2AmmWrapper(chainID, hopArgs.Symbol)
|
|
if err != nil {
|
|
return tx, err
|
|
}
|
|
|
|
txOpts := hopArgs.ToTransactOpts(signerFn)
|
|
if token.IsNative() {
|
|
txOpts.Value = (*big.Int)(hopArgs.Amount)
|
|
}
|
|
now := time.Now()
|
|
deadline := big.NewInt(now.Unix() + 604800)
|
|
tx, err = ammWrapper.SwapAndSend(
|
|
txOpts,
|
|
big.NewInt(int64(hopArgs.ChainID)),
|
|
hopArgs.Recipient,
|
|
hopArgs.Amount.ToInt(),
|
|
hopArgs.BonderFee.ToInt(),
|
|
big.NewInt(0),
|
|
deadline,
|
|
big.NewInt(0),
|
|
deadline,
|
|
)
|
|
|
|
return tx, err
|
|
}
|
|
|
|
// CalculateBonderFees logics come from: https://docs.hop.exchange/fee-calculation
|
|
func (h *HopBridge) CalculateBonderFees(from, to *params.Network, token *token.Token, amountIn *big.Int, nativeTokenPrice, tokenPrice float64, gasPrice *big.Float) (*big.Int, error) {
|
|
amount := new(big.Float).SetInt(amountIn)
|
|
totalFee := big.NewFloat(0)
|
|
destinationTxFee, err := h.getDestinationTxFee(from, to, nativeTokenPrice, tokenPrice, gasPrice)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
bonderFeeRelative, err := h.getBonderFeeRelative(from, to, amount, token)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if from.Layer != 1 {
|
|
adjustedBonderFee, err := h.calcFromHTokenAmount(to, bonderFeeRelative, token.Symbol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
adjustedDestinationTxFee, err := h.calcToHTokenAmount(to, destinationTxFee, token.Symbol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
bonderFeeAbsolute := h.getBonderFeeAbsolute(tokenPrice)
|
|
if adjustedBonderFee.Cmp(bonderFeeAbsolute) == -1 {
|
|
adjustedBonderFee = bonderFeeAbsolute
|
|
}
|
|
|
|
totalFee.Add(adjustedBonderFee, adjustedDestinationTxFee)
|
|
}
|
|
res, _ := new(big.Float).Mul(totalFee, big.NewFloat(math.Pow(10, float64(token.Decimals)))).Int(nil)
|
|
return res, nil
|
|
}
|
|
|
|
func (h *HopBridge) CalculateFees(from, to *params.Network, token *token.Token, amountIn *big.Int, nativeTokenPrice, tokenPrice float64, gasPrice *big.Float) (*big.Int, *big.Int, error) {
|
|
bonderFees, err := h.CalculateBonderFees(from, to, token, amountIn, nativeTokenPrice, tokenPrice, gasPrice)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
amountOut, err := h.amountOut(from, to, new(big.Float).SetInt(amountIn), token.Symbol)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
amountOutInt, _ := amountOut.Int(nil)
|
|
|
|
return bonderFees, new(big.Int).Add(
|
|
bonderFees,
|
|
new(big.Int).Sub(amountIn, amountOutInt),
|
|
), nil
|
|
}
|
|
|
|
func (h *HopBridge) calcToHTokenAmount(network *params.Network, amount *big.Float, symbol string) (*big.Float, error) {
|
|
if network.Layer == 1 || amount.Cmp(big.NewFloat(0)) == 0 {
|
|
return amount, nil
|
|
}
|
|
|
|
contract, err := h.contractMaker.NewHopL2SaddlSwap(network.ChainID, symbol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
amountInt, _ := amount.Int(nil)
|
|
res, err := contract.CalculateSwap(&bind.CallOpts{Context: context.Background()}, HopCanonicalTokenIndex, HophTokenIndex, amountInt)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return new(big.Float).SetInt(res), nil
|
|
}
|
|
|
|
func (h *HopBridge) calcFromHTokenAmount(network *params.Network, amount *big.Float, symbol string) (*big.Float, error) {
|
|
if network.Layer == 1 || amount.Cmp(big.NewFloat(0)) == 0 {
|
|
return amount, nil
|
|
}
|
|
contract, err := h.contractMaker.NewHopL2SaddlSwap(network.ChainID, symbol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
amountInt, _ := amount.Int(nil)
|
|
res, err := contract.CalculateSwap(&bind.CallOpts{Context: context.Background()}, HophTokenIndex, HopCanonicalTokenIndex, amountInt)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return new(big.Float).SetInt(res), nil
|
|
}
|
|
|
|
func (h *HopBridge) CalculateAmountOut(from, to *params.Network, amountIn *big.Int, symbol string) (*big.Int, error) {
|
|
amountOut, err := h.amountOut(from, to, new(big.Float).SetInt(amountIn), symbol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
amountOutInt, _ := amountOut.Int(nil)
|
|
return amountOutInt, nil
|
|
}
|
|
|
|
func (h *HopBridge) amountOut(from, to *params.Network, amountIn *big.Float, symbol string) (*big.Float, error) {
|
|
hTokenAmount, err := h.calcToHTokenAmount(from, amountIn, symbol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return h.calcFromHTokenAmount(to, hTokenAmount, symbol)
|
|
}
|
|
|
|
func (h *HopBridge) getBonderFeeRelative(from, to *params.Network, amount *big.Float, token *token.Token) (*big.Float, error) {
|
|
if from.Layer != 1 {
|
|
return big.NewFloat(0), nil
|
|
}
|
|
|
|
hTokenAmount, err := h.calcToHTokenAmount(from, amount, token.Symbol)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
feeBps := HopBonderFeeBps[token.Symbol][to.ChainID]
|
|
|
|
factor := new(big.Float).Mul(hTokenAmount, big.NewFloat(float64(feeBps)))
|
|
return new(big.Float).Quo(
|
|
factor,
|
|
big.NewFloat(10000),
|
|
), nil
|
|
}
|
|
|
|
func (h *HopBridge) getBonderFeeAbsolute(tokenPrice float64) *big.Float {
|
|
return new(big.Float).Quo(big.NewFloat(HopMinBonderFeeUsd), big.NewFloat(tokenPrice))
|
|
}
|
|
|
|
func (h *HopBridge) getDestinationTxFee(from, to *params.Network, nativeTokenPrice, tokenPrice float64, gasPrice *big.Float) (*big.Float, error) {
|
|
if from.Layer != 1 {
|
|
return big.NewFloat(0), nil
|
|
}
|
|
|
|
bondTransferGasLimit := HopBondTransferGasLimit[to.ChainID]
|
|
settlementGasLimit := HopSettlementGasLimitPerTx[to.ChainID]
|
|
totalGasLimit := new(big.Int).Add(big.NewInt(bondTransferGasLimit), big.NewInt(settlementGasLimit))
|
|
|
|
rate := new(big.Float).Quo(big.NewFloat(nativeTokenPrice), big.NewFloat(tokenPrice))
|
|
|
|
txFeeEth := new(big.Float).Mul(gasPrice, new(big.Float).SetInt(totalGasLimit))
|
|
return new(big.Float).Mul(txFeeEth, rate), nil
|
|
}
|