@xspswap/smart-order-router
Version:
XSwap Protocol V3 Smart Order Router
294 lines • 28.1 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.initSwapRouteFromExisting = exports.calculateGasUsed = exports.getL2ToL1GasUsed = exports.calculateOptimismToL1FeeFromCalldata = exports.calculateArbitrumToL1FeeFromCalldata = exports.getGasCostInQuoteToken = exports.getGasCostInNativeCurrency = exports.getGasCostInUSD = exports.getHighestLiquidityV3USDPool = exports.getHighestLiquidityV3NativePool = exports.getV2NativePool = void 0;
const bignumber_1 = require("@ethersproject/bignumber");
const sdk_core_1 = require("@x-swap-protocol/sdk-core");
const v3_sdk_1 = require("@x-swap-protocol/v3-sdk");
const router_sdk_1 = require("@x-swap-protocol/router-sdk");
const lodash_1 = __importDefault(require("lodash"));
const routers_1 = require("../routers");
const util_1 = require("../util");
const methodParameters_1 = require("./methodParameters");
async function getV2NativePool(token, poolProvider) {
const chainId = token.chainId;
const weth = util_1.WRAPPED_NATIVE_CURRENCY[chainId];
const poolAccessor = await poolProvider.getPools([[weth, token]]);
const pool = poolAccessor.getPool(weth, token);
if (!pool || pool.reserve0.equalTo(0) || pool.reserve1.equalTo(0)) {
util_1.log.error({
weth,
token,
reserve0: pool === null || pool === void 0 ? void 0 : pool.reserve0.toExact(),
reserve1: pool === null || pool === void 0 ? void 0 : pool.reserve1.toExact(),
}, `Could not find a valid WETH V2 pool with ${token.symbol} for computing gas costs.`);
return null;
}
return pool;
}
exports.getV2NativePool = getV2NativePool;
async function getHighestLiquidityV3NativePool(token, poolProvider) {
const nativeCurrency = util_1.WRAPPED_NATIVE_CURRENCY[token.chainId];
const nativePools = (0, lodash_1.default)([
v3_sdk_1.FeeAmount.HIGH,
v3_sdk_1.FeeAmount.MEDIUM,
v3_sdk_1.FeeAmount.LOW,
v3_sdk_1.FeeAmount.LOWEST,
])
.map((feeAmount) => {
return [nativeCurrency, token, feeAmount];
})
.value();
const poolAccessor = await poolProvider.getPools(nativePools);
const pools = (0, lodash_1.default)([
v3_sdk_1.FeeAmount.HIGH,
v3_sdk_1.FeeAmount.MEDIUM,
v3_sdk_1.FeeAmount.LOW,
v3_sdk_1.FeeAmount.LOWEST,
])
.map((feeAmount) => {
return poolAccessor.getPool(nativeCurrency, token, feeAmount);
})
.compact()
.value();
if (pools.length == 0) {
util_1.log.error({ pools }, `Could not find a ${nativeCurrency.symbol} pool with ${token.symbol} for computing gas costs.`);
return null;
}
const maxPool = lodash_1.default.maxBy(pools, (pool) => pool.liquidity);
return maxPool;
}
exports.getHighestLiquidityV3NativePool = getHighestLiquidityV3NativePool;
async function getHighestLiquidityV3USDPool(chainId, poolProvider) {
const usdTokens = routers_1.usdGasTokensByChain[chainId];
const wrappedCurrency = util_1.WRAPPED_NATIVE_CURRENCY[chainId];
if (!usdTokens) {
throw new Error(`Could not find a USD token for computing gas costs on ${chainId}`);
}
const usdPools = (0, lodash_1.default)([
v3_sdk_1.FeeAmount.HIGH,
v3_sdk_1.FeeAmount.MEDIUM,
v3_sdk_1.FeeAmount.LOW,
v3_sdk_1.FeeAmount.LOWEST,
])
.flatMap((feeAmount) => {
return lodash_1.default.map(usdTokens, (usdToken) => [
wrappedCurrency,
usdToken,
feeAmount,
]);
})
.value();
const poolAccessor = await poolProvider.getPools(usdPools);
const pools = (0, lodash_1.default)([
v3_sdk_1.FeeAmount.HIGH,
v3_sdk_1.FeeAmount.MEDIUM,
v3_sdk_1.FeeAmount.LOW,
v3_sdk_1.FeeAmount.LOWEST,
])
.flatMap((feeAmount) => {
const pools = [];
for (const usdToken of usdTokens) {
const pool = poolAccessor.getPool(wrappedCurrency, usdToken, feeAmount);
if (pool) {
pools.push(pool);
}
}
return pools;
})
.compact()
.value();
if (pools.length == 0) {
const message = `Could not find a USD/${wrappedCurrency.symbol} pool for computing gas costs.`;
util_1.log.error({ pools }, message);
throw new Error(message);
}
const maxPool = lodash_1.default.maxBy(pools, (pool) => pool.liquidity);
return maxPool;
}
exports.getHighestLiquidityV3USDPool = getHighestLiquidityV3USDPool;
function getGasCostInUSD(usdPool, costNativeCurrency) {
const nativeCurrency = costNativeCurrency.currency;
// convert fee into usd
const nativeTokenPrice = usdPool.token0.address == nativeCurrency.address
? usdPool.token0Price
: usdPool.token1Price;
const gasCostUSD = nativeTokenPrice.quote(costNativeCurrency);
return gasCostUSD;
}
exports.getGasCostInUSD = getGasCostInUSD;
function getGasCostInNativeCurrency(nativeCurrency, gasCostInWei) {
// wrap fee to native currency
const costNativeCurrency = sdk_core_1.CurrencyAmount.fromRawAmount(nativeCurrency, gasCostInWei.toString());
return costNativeCurrency;
}
exports.getGasCostInNativeCurrency = getGasCostInNativeCurrency;
async function getGasCostInQuoteToken(quoteToken, nativePool, costNativeCurrency) {
const nativeTokenPrice = nativePool.token0.address == quoteToken.address
? nativePool.token1Price
: nativePool.token0Price;
const gasCostQuoteToken = nativeTokenPrice.quote(costNativeCurrency);
return gasCostQuoteToken;
}
exports.getGasCostInQuoteToken = getGasCostInQuoteToken;
function calculateArbitrumToL1FeeFromCalldata(calldata, gasData) {
const { perL2TxFee, perL1CalldataFee } = gasData;
// calculates gas amounts based on bytes of calldata, use 0 as overhead.
const l1GasUsed = getL2ToL1GasUsed(calldata, bignumber_1.BigNumber.from(0));
// multiply by the fee per calldata and add the flat l2 fee
let l1Fee = l1GasUsed.mul(perL1CalldataFee);
l1Fee = l1Fee.add(perL2TxFee);
return [l1GasUsed, l1Fee];
}
exports.calculateArbitrumToL1FeeFromCalldata = calculateArbitrumToL1FeeFromCalldata;
function calculateOptimismToL1FeeFromCalldata(calldata, gasData) {
const { l1BaseFee, scalar, decimals, overhead } = gasData;
const l1GasUsed = getL2ToL1GasUsed(calldata, overhead);
// l1BaseFee is L1 Gas Price on etherscan
const l1Fee = l1GasUsed.mul(l1BaseFee);
const unscaled = l1Fee.mul(scalar);
// scaled = unscaled / (10 ** decimals)
const scaledConversion = bignumber_1.BigNumber.from(10).pow(decimals);
const scaled = unscaled.div(scaledConversion);
return [l1GasUsed, scaled];
}
exports.calculateOptimismToL1FeeFromCalldata = calculateOptimismToL1FeeFromCalldata;
// based on the code from the optimism OVM_GasPriceOracle contract
function getL2ToL1GasUsed(data, overhead) {
// data is hex encoded
const dataArr = data.slice(2).match(/.{1,2}/g);
const numBytes = dataArr.length;
let count = 0;
for (let i = 0; i < numBytes; i += 1) {
const byte = parseInt(dataArr[i], 16);
if (byte == 0) {
count += 4;
}
else {
count += 16;
}
}
const unsigned = overhead.add(count);
const signedConversion = 68 * 16;
return unsigned.add(signedConversion);
}
exports.getL2ToL1GasUsed = getL2ToL1GasUsed;
async function calculateGasUsed(chainId, route, simulatedGasUsed, v2PoolProvider, v3PoolProvider) {
const quoteToken = route.quote.currency.wrapped;
const gasPriceWei = route.gasPriceWei;
// calculate L2 to L1 security fee if relevant
let l2toL1FeeInWei = bignumber_1.BigNumber.from(0);
// add l2 to l1 fee and wrap fee to native currency
const gasCostInWei = gasPriceWei.mul(simulatedGasUsed).add(l2toL1FeeInWei);
const nativeCurrency = util_1.WRAPPED_NATIVE_CURRENCY[chainId];
const costNativeCurrency = getGasCostInNativeCurrency(nativeCurrency, gasCostInWei);
const usdPool = await getHighestLiquidityV3USDPool(chainId, v3PoolProvider);
const gasCostUSD = await getGasCostInUSD(usdPool, costNativeCurrency);
let gasCostQuoteToken = costNativeCurrency;
// get fee in terms of quote token
if (!quoteToken.equals(nativeCurrency)) {
const nativePools = await Promise.all([
getHighestLiquidityV3NativePool(quoteToken, v3PoolProvider),
getV2NativePool(quoteToken, v2PoolProvider),
]);
const nativePool = nativePools.find((pool) => pool !== null);
if (!nativePool) {
util_1.log.info('Could not find any V2 or V3 pools to convert the cost into the quote token');
gasCostQuoteToken = sdk_core_1.CurrencyAmount.fromRawAmount(quoteToken, 0);
}
else {
gasCostQuoteToken = await getGasCostInQuoteToken(quoteToken, nativePool, costNativeCurrency);
}
}
// Adjust quote for gas fees
let quoteGasAdjusted;
if (route.trade.tradeType == sdk_core_1.TradeType.EXACT_OUTPUT) {
// Exact output - need more of tokenIn to get the desired amount of tokenOut
quoteGasAdjusted = route.quote.add(gasCostQuoteToken);
}
else {
// Exact input - can get less of tokenOut due to fees
quoteGasAdjusted = route.quote.subtract(gasCostQuoteToken);
}
return {
estimatedGasUsedUSD: gasCostUSD,
estimatedGasUsedQuoteToken: gasCostQuoteToken,
quoteGasAdjusted: quoteGasAdjusted,
};
}
exports.calculateGasUsed = calculateGasUsed;
function initSwapRouteFromExisting(swapRoute, v2PoolProvider, v3PoolProvider, quoteGasAdjusted, estimatedGasUsed, estimatedGasUsedQuoteToken, estimatedGasUsedUSD) {
const currencyIn = swapRoute.trade.inputAmount.currency;
const currencyOut = swapRoute.trade.outputAmount.currency;
const tradeType = swapRoute.trade.tradeType.valueOf()
? sdk_core_1.TradeType.EXACT_OUTPUT
: sdk_core_1.TradeType.EXACT_INPUT;
const routesWithValidQuote = swapRoute.route.map((route) => {
switch (route.protocol) {
case router_sdk_1.Protocol.V3:
return new routers_1.V3RouteWithValidQuote({
amount: sdk_core_1.CurrencyAmount.fromFractionalAmount(route.amount.currency, route.amount.numerator, route.amount.denominator),
rawQuote: bignumber_1.BigNumber.from(route.rawQuote),
sqrtPriceX96AfterList: route.sqrtPriceX96AfterList.map((num) => bignumber_1.BigNumber.from(num)),
initializedTicksCrossedList: [...route.initializedTicksCrossedList],
quoterGasEstimate: bignumber_1.BigNumber.from(route.gasEstimate),
percent: route.percent,
route: route.route,
gasModel: route.gasModel,
quoteToken: new sdk_core_1.Token(currencyIn.chainId, route.quoteToken.address, route.quoteToken.decimals, route.quoteToken.symbol, route.quoteToken.name),
tradeType: tradeType,
v3PoolProvider: v3PoolProvider,
});
case router_sdk_1.Protocol.V2:
return new routers_1.V2RouteWithValidQuote({
amount: sdk_core_1.CurrencyAmount.fromFractionalAmount(route.amount.currency, route.amount.numerator, route.amount.denominator),
rawQuote: bignumber_1.BigNumber.from(route.rawQuote),
percent: route.percent,
route: route.route,
gasModel: route.gasModel,
quoteToken: new sdk_core_1.Token(currencyIn.chainId, route.quoteToken.address, route.quoteToken.decimals, route.quoteToken.symbol, route.quoteToken.name),
tradeType: tradeType,
v2PoolProvider: v2PoolProvider,
});
case router_sdk_1.Protocol.MIXED:
return new routers_1.MixedRouteWithValidQuote({
amount: sdk_core_1.CurrencyAmount.fromFractionalAmount(route.amount.currency, route.amount.numerator, route.amount.denominator),
rawQuote: bignumber_1.BigNumber.from(route.rawQuote),
sqrtPriceX96AfterList: route.sqrtPriceX96AfterList.map((num) => bignumber_1.BigNumber.from(num)),
initializedTicksCrossedList: [...route.initializedTicksCrossedList],
quoterGasEstimate: bignumber_1.BigNumber.from(route.gasEstimate),
percent: route.percent,
route: route.route,
mixedRouteGasModel: route.gasModel,
v2PoolProvider,
quoteToken: new sdk_core_1.Token(currencyIn.chainId, route.quoteToken.address, route.quoteToken.decimals, route.quoteToken.symbol, route.quoteToken.name),
tradeType: tradeType,
v3PoolProvider: v3PoolProvider,
});
}
});
const trade = (0, methodParameters_1.buildTrade)(currencyIn, currencyOut, tradeType, routesWithValidQuote);
return {
quote: swapRoute.quote,
quoteGasAdjusted,
estimatedGasUsed,
estimatedGasUsedQuoteToken,
estimatedGasUsedUSD,
gasPriceWei: bignumber_1.BigNumber.from(swapRoute.gasPriceWei),
trade,
route: routesWithValidQuote,
blockNumber: bignumber_1.BigNumber.from(swapRoute.blockNumber),
methodParameters: swapRoute.methodParameters
? {
calldata: swapRoute.methodParameters.calldata,
value: swapRoute.methodParameters.value,
to: swapRoute.methodParameters.to,
}
: undefined,
simulationStatus: swapRoute.simulationStatus,
};
}
exports.initSwapRouteFromExisting = initSwapRouteFromExisting;
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