quickswap-smart-order-router
Version:
QuickSwap Smart Order Router
689 lines • 75.8 kB
JavaScript
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.AlphaRouter = void 0;
const bignumber_1 = require("@ethersproject/bignumber");
const providers_1 = require("@ethersproject/providers");
const default_token_list_1 = __importDefault(require("@uniswap/default-token-list"));
const router_sdk_1 = require("@uniswap/router-sdk");
const sdk_core_1 = require("@uniswap/sdk-core");
const v3_sdk_1 = require("@uniswap/v3-sdk");
const async_retry_1 = __importDefault(require("async-retry"));
const jsbi_1 = __importDefault(require("jsbi"));
const lodash_1 = __importDefault(require("lodash"));
const node_cache_1 = __importDefault(require("node-cache"));
const _1 = require(".");
const providers_2 = require("../../providers");
const caching_token_list_provider_1 = require("../../providers/caching-token-list-provider");
const token_provider_1 = require("../../providers/token-provider");
const token_validator_provider_1 = require("../../providers/token-validator-provider");
const pool_provider_1 = require("../../providers/v2/pool-provider");
const gas_data_provider_1 = require("../../providers/v3/gas-data-provider");
const pool_provider_2 = require("../../providers/v3/pool-provider");
const quote_provider_1 = require("../../providers/v3/quote-provider");
const chains_1 = require("../../util/chains");
const log_1 = require("../../util/log");
const methodParameters_1 = require("../../util/methodParameters");
const metric_1 = require("../../util/metric");
const routes_1 = require("../../util/routes");
const unsupported_tokens_1 = require("../../util/unsupported-tokens");
const router_1 = require("../router");
const config_1 = require("./config");
const route_with_valid_quote_1 = require("./entities/route-with-valid-quote");
const best_swap_route_1 = require("./functions/best-swap-route");
const calculate_ratio_amount_in_1 = require("./functions/calculate-ratio-amount-in");
const compute_all_routes_1 = require("./functions/compute-all-routes");
const get_candidate_pools_1 = require("./functions/get-candidate-pools");
const v2_heuristic_gas_model_1 = require("./gas-models/v2/v2-heuristic-gas-model");
class AlphaRouter {
constructor({ chainId, provider, multicall2Provider, v3PoolProvider, v3QuoteProvider, v2PoolProvider, v2QuoteProvider, v2SubgraphProvider, tokenProvider, blockedTokenListProvider, v3SubgraphProvider, gasPriceProvider, v3GasModelFactory, v2GasModelFactory, swapRouterProvider, optimismGasDataProvider, tokenValidatorProvider, arbitrumGasDataProvider, }) {
this.chainId = chainId;
this.provider = provider;
this.multicall2Provider =
multicall2Provider !== null && multicall2Provider !== void 0 ? multicall2Provider : new providers_2.UniswapMulticallProvider(chainId, provider, 375000);
this.v3PoolProvider =
v3PoolProvider !== null && v3PoolProvider !== void 0 ? v3PoolProvider : new providers_2.CachingV3PoolProvider(this.chainId, new pool_provider_2.V3PoolProvider((0, chains_1.ID_TO_CHAIN_ID)(chainId), this.multicall2Provider), new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 360, useClones: false })));
if (v3QuoteProvider) {
this.v3QuoteProvider = v3QuoteProvider;
}
else {
switch (chainId) {
case chains_1.ChainId.OPTIMISM:
case chains_1.ChainId.OPTIMISTIC_KOVAN:
this.v3QuoteProvider = new quote_provider_1.V3QuoteProvider(chainId, provider, this.multicall2Provider, {
retries: 2,
minTimeout: 100,
maxTimeout: 1000,
}, {
multicallChunk: 110,
gasLimitPerCall: 1200000,
quoteMinSuccessRate: 0.1,
}, {
gasLimitOverride: 3000000,
multicallChunk: 45,
}, {
gasLimitOverride: 3000000,
multicallChunk: 45,
}, {
baseBlockOffset: -10,
rollback: {
enabled: true,
attemptsBeforeRollback: 1,
rollbackBlockOffset: -10,
},
});
break;
case chains_1.ChainId.ARBITRUM_ONE:
case chains_1.ChainId.ARBITRUM_RINKEBY:
this.v3QuoteProvider = new quote_provider_1.V3QuoteProvider(chainId, provider, this.multicall2Provider, {
retries: 2,
minTimeout: 100,
maxTimeout: 1000,
}, {
multicallChunk: 10,
gasLimitPerCall: 12000000,
quoteMinSuccessRate: 0.1,
}, {
gasLimitOverride: 30000000,
multicallChunk: 6,
}, {
gasLimitOverride: 30000000,
multicallChunk: 6,
});
break;
default:
this.v3QuoteProvider = new quote_provider_1.V3QuoteProvider(chainId, provider, this.multicall2Provider, {
retries: 2,
minTimeout: 100,
maxTimeout: 1000,
}, {
multicallChunk: 210,
gasLimitPerCall: 705000,
quoteMinSuccessRate: 0.15,
}, {
gasLimitOverride: 2000000,
multicallChunk: 70,
});
break;
}
}
this.v2PoolProvider =
v2PoolProvider !== null && v2PoolProvider !== void 0 ? v2PoolProvider : new pool_provider_1.V2PoolProvider(chainId, this.multicall2Provider);
this.v2QuoteProvider = v2QuoteProvider !== null && v2QuoteProvider !== void 0 ? v2QuoteProvider : new providers_2.V2QuoteProvider();
this.blockedTokenListProvider =
blockedTokenListProvider !== null && blockedTokenListProvider !== void 0 ? blockedTokenListProvider : new caching_token_list_provider_1.CachingTokenListProvider(chainId, unsupported_tokens_1.UNSUPPORTED_TOKENS, new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 3600, useClones: false })));
this.tokenProvider =
tokenProvider !== null && tokenProvider !== void 0 ? tokenProvider : new providers_2.CachingTokenProviderWithFallback(chainId, new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 3600, useClones: false })), new caching_token_list_provider_1.CachingTokenListProvider(chainId, default_token_list_1.default, new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 3600, useClones: false }))), new token_provider_1.TokenProvider(chainId, this.multicall2Provider));
const chainName = (0, chains_1.ID_TO_NETWORK_NAME)(chainId);
// ipfs urls in the following format: `https://cloudflare-ipfs.com/ipns/api.uniswap.org/v1/pools/${protocol}/${chainName}.json`;
if (v2SubgraphProvider) {
this.v2SubgraphProvider = v2SubgraphProvider;
}
else {
this.v2SubgraphProvider = new providers_2.V2SubgraphProviderWithFallBacks([
new providers_2.CachingV2SubgraphProvider(chainId, new providers_2.URISubgraphProvider(chainId, `https://cloudflare-ipfs.com/ipns/api.uniswap.org/v1/pools/v2/${chainName}.json`, undefined, 0), new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 300, useClones: false }))),
new providers_2.StaticV2SubgraphProvider(chainId),
]);
}
if (v3SubgraphProvider) {
this.v3SubgraphProvider = v3SubgraphProvider;
}
else {
this.v3SubgraphProvider = new providers_2.V3SubgraphProviderWithFallBacks([
new providers_2.CachingV3SubgraphProvider(chainId, new providers_2.URISubgraphProvider(chainId, `https://cloudflare-ipfs.com/ipns/api.uniswap.org/v1/pools/v3/${chainName}.json`, undefined, 0), new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 300, useClones: false }))),
new providers_2.StaticV3SubgraphProvider(chainId, this.v3PoolProvider),
]);
}
this.gasPriceProvider =
gasPriceProvider !== null && gasPriceProvider !== void 0 ? gasPriceProvider : new providers_2.CachingGasStationProvider(chainId, this.provider instanceof providers_1.JsonRpcProvider
? new providers_2.OnChainGasPriceProvider(chainId, new providers_2.EIP1559GasPriceProvider(this.provider), new providers_2.LegacyGasPriceProvider(this.provider))
: new providers_2.ETHGasStationInfoProvider(config_1.ETH_GAS_STATION_API_URL), new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 15, useClones: false })));
this.v3GasModelFactory =
v3GasModelFactory !== null && v3GasModelFactory !== void 0 ? v3GasModelFactory : new _1.V3HeuristicGasModelFactory();
this.v2GasModelFactory =
v2GasModelFactory !== null && v2GasModelFactory !== void 0 ? v2GasModelFactory : new v2_heuristic_gas_model_1.V2HeuristicGasModelFactory();
this.swapRouterProvider =
swapRouterProvider !== null && swapRouterProvider !== void 0 ? swapRouterProvider : new providers_2.SwapRouterProvider(this.multicall2Provider);
if (chainId == chains_1.ChainId.OPTIMISM || chainId == chains_1.ChainId.OPTIMISTIC_KOVAN) {
this.l2GasDataProvider =
optimismGasDataProvider !== null && optimismGasDataProvider !== void 0 ? optimismGasDataProvider : new gas_data_provider_1.OptimismGasDataProvider(chainId, this.multicall2Provider);
}
if (chainId == chains_1.ChainId.ARBITRUM_ONE ||
chainId == chains_1.ChainId.ARBITRUM_RINKEBY) {
this.l2GasDataProvider =
arbitrumGasDataProvider !== null && arbitrumGasDataProvider !== void 0 ? arbitrumGasDataProvider : new gas_data_provider_1.ArbitrumGasDataProvider(chainId, this.provider);
}
if (tokenValidatorProvider) {
this.tokenValidatorProvider = tokenValidatorProvider;
}
else if (this.chainId == chains_1.ChainId.MAINNET) {
this.tokenValidatorProvider = new token_validator_provider_1.TokenValidatorProvider(this.chainId, this.multicall2Provider, new providers_2.NodeJSCache(new node_cache_1.default({ stdTTL: 30000, useClones: false })));
}
}
async routeToRatio(token0Balance, token1Balance, position, swapAndAddConfig, swapAndAddOptions, routingConfig = (0, config_1.DEFAULT_ROUTING_CONFIG_BY_CHAIN)(this.chainId)) {
if (token1Balance.currency.wrapped.sortsBefore(token0Balance.currency.wrapped)) {
[token0Balance, token1Balance] = [token1Balance, token0Balance];
}
let preSwapOptimalRatio = this.calculateOptimalRatio(position, position.pool.sqrtRatioX96, true);
// set up parameters according to which token will be swapped
let zeroForOne;
if (position.pool.tickCurrent > position.tickUpper) {
zeroForOne = true;
}
else if (position.pool.tickCurrent < position.tickLower) {
zeroForOne = false;
}
else {
zeroForOne = new sdk_core_1.Fraction(token0Balance.quotient, token1Balance.quotient).greaterThan(preSwapOptimalRatio);
if (!zeroForOne)
preSwapOptimalRatio = preSwapOptimalRatio.invert();
}
const [inputBalance, outputBalance] = zeroForOne
? [token0Balance, token1Balance]
: [token1Balance, token0Balance];
let optimalRatio = preSwapOptimalRatio;
let postSwapTargetPool = position.pool;
let exchangeRate = zeroForOne
? position.pool.token0Price
: position.pool.token1Price;
let swap = null;
let ratioAchieved = false;
let n = 0;
// iterate until we find a swap with a sufficient ratio or return null
while (!ratioAchieved) {
n++;
if (n > swapAndAddConfig.maxIterations) {
log_1.log.info('max iterations exceeded');
return {
status: router_1.SwapToRatioStatus.NO_ROUTE_FOUND,
error: 'max iterations exceeded',
};
}
const amountToSwap = (0, calculate_ratio_amount_in_1.calculateRatioAmountIn)(optimalRatio, exchangeRate, inputBalance, outputBalance);
if (amountToSwap.equalTo(0)) {
log_1.log.info(`no swap needed: amountToSwap = 0`);
return {
status: router_1.SwapToRatioStatus.NO_SWAP_NEEDED,
};
}
swap = await this.route(amountToSwap, outputBalance.currency, sdk_core_1.TradeType.EXACT_INPUT, undefined, Object.assign(Object.assign(Object.assign({}, (0, config_1.DEFAULT_ROUTING_CONFIG_BY_CHAIN)(this.chainId)), routingConfig), { protocols: [router_sdk_1.Protocol.V3, router_sdk_1.Protocol.V2] }));
if (!swap) {
log_1.log.info('no route found from this.route()');
return {
status: router_1.SwapToRatioStatus.NO_ROUTE_FOUND,
error: 'no route found',
};
}
const inputBalanceUpdated = inputBalance.subtract(swap.trade.inputAmount);
const outputBalanceUpdated = outputBalance.add(swap.trade.outputAmount);
const newRatio = inputBalanceUpdated.divide(outputBalanceUpdated);
let targetPoolPriceUpdate;
swap.route.forEach((route) => {
if (route.protocol == router_sdk_1.Protocol.V3) {
const v3Route = route;
v3Route.route.pools.forEach((pool, i) => {
if (pool.token0.equals(position.pool.token0) &&
pool.token1.equals(position.pool.token1) &&
pool.fee == position.pool.fee) {
targetPoolPriceUpdate = jsbi_1.default.BigInt(v3Route.sqrtPriceX96AfterList[i].toString());
optimalRatio = this.calculateOptimalRatio(position, jsbi_1.default.BigInt(targetPoolPriceUpdate.toString()), zeroForOne);
}
});
}
});
if (!targetPoolPriceUpdate) {
optimalRatio = preSwapOptimalRatio;
}
ratioAchieved =
newRatio.equalTo(optimalRatio) ||
this.absoluteValue(newRatio.asFraction.divide(optimalRatio).subtract(1)).lessThan(swapAndAddConfig.ratioErrorTolerance);
if (ratioAchieved && targetPoolPriceUpdate) {
postSwapTargetPool = new v3_sdk_1.Pool(position.pool.token0, position.pool.token1, position.pool.fee, targetPoolPriceUpdate, position.pool.liquidity, v3_sdk_1.TickMath.getTickAtSqrtRatio(targetPoolPriceUpdate), position.pool.tickDataProvider);
}
exchangeRate = swap.trade.outputAmount.divide(swap.trade.inputAmount);
log_1.log.info({
exchangeRate: exchangeRate.asFraction.toFixed(18),
optimalRatio: optimalRatio.asFraction.toFixed(18),
newRatio: newRatio.asFraction.toFixed(18),
inputBalanceUpdated: inputBalanceUpdated.asFraction.toFixed(18),
outputBalanceUpdated: outputBalanceUpdated.asFraction.toFixed(18),
ratioErrorTolerance: swapAndAddConfig.ratioErrorTolerance.toFixed(18),
iterationN: n.toString(),
}, 'QuoteToRatio Iteration Parameters');
if (exchangeRate.equalTo(0)) {
log_1.log.info('exchangeRate to 0');
return {
status: router_1.SwapToRatioStatus.NO_ROUTE_FOUND,
error: 'insufficient liquidity to swap to optimal ratio',
};
}
}
if (!swap) {
return {
status: router_1.SwapToRatioStatus.NO_ROUTE_FOUND,
error: 'no route found',
};
}
let methodParameters;
if (swapAndAddOptions) {
methodParameters = await this.buildSwapAndAddMethodParameters(swap.trade, swapAndAddOptions, {
initialBalanceTokenIn: inputBalance,
initialBalanceTokenOut: outputBalance,
preLiquidityPosition: position,
});
}
return {
status: router_1.SwapToRatioStatus.SUCCESS,
result: Object.assign(Object.assign({}, swap), { methodParameters, optimalRatio, postSwapTargetPool }),
};
}
/**
* @inheritdoc IRouter
*/
async route(amount, quoteCurrency, tradeType, swapConfig, partialRoutingConfig = {}) {
var _a;
metric_1.metric.putMetric(`QuoteRequestedForChain${this.chainId}`, 1, metric_1.MetricLoggerUnit.Count);
// Get a block number to specify in all our calls. Ensures data we fetch from chain is
// from the same block.
const blockNumber = (_a = partialRoutingConfig.blockNumber) !== null && _a !== void 0 ? _a : this.getBlockNumberPromise();
const routingConfig = lodash_1.default.merge({}, (0, config_1.DEFAULT_ROUTING_CONFIG_BY_CHAIN)(this.chainId), partialRoutingConfig, { blockNumber });
const { protocols } = routingConfig;
const currencyIn = tradeType == sdk_core_1.TradeType.EXACT_INPUT ? amount.currency : quoteCurrency;
const currencyOut = tradeType == sdk_core_1.TradeType.EXACT_INPUT ? quoteCurrency : amount.currency;
const tokenIn = currencyIn.wrapped;
const tokenOut = currencyOut.wrapped;
// Generate our distribution of amounts, i.e. fractions of the input amount.
// We will get quotes for fractions of the input amount for different routes, then
// combine to generate split routes.
const [percents, amounts] = this.getAmountDistribution(amount, routingConfig);
// Get an estimate of the gas price to use when estimating gas cost of different routes.
const beforeGas = Date.now();
const { gasPriceWei } = await this.gasPriceProvider.getGasPrice();
metric_1.metric.putMetric('GasPriceLoad', Date.now() - beforeGas, metric_1.MetricLoggerUnit.Milliseconds);
const quoteToken = quoteCurrency.wrapped;
const quotePromises = [];
const protocolsSet = new Set(protocols !== null && protocols !== void 0 ? protocols : []);
const gasModel = await this.v3GasModelFactory.buildGasModel(this.chainId, gasPriceWei, this.v3PoolProvider, quoteToken, this.l2GasDataProvider);
if ((protocolsSet.size == 0 ||
(protocolsSet.has(router_sdk_1.Protocol.V2) && protocolsSet.has(router_sdk_1.Protocol.V3))) &&
chains_1.V2_SUPPORTED.includes(this.chainId)) {
log_1.log.info({ protocols, tradeType }, 'Routing across all protocols');
quotePromises.push(this.getV3Quotes(tokenIn, tokenOut, amounts, percents, quoteToken, gasModel, tradeType, routingConfig));
quotePromises.push(this.getV2Quotes(tokenIn, tokenOut, amounts, percents, quoteToken, gasPriceWei, tradeType, routingConfig));
}
else {
if (protocolsSet.has(router_sdk_1.Protocol.V3) ||
(protocolsSet.size == 0 && !chains_1.V2_SUPPORTED.includes(this.chainId))) {
log_1.log.info({ protocols, swapType: tradeType }, 'Routing across V3');
quotePromises.push(this.getV3Quotes(tokenIn, tokenOut, amounts, percents, quoteToken, gasModel, tradeType, routingConfig));
}
if (protocolsSet.has(router_sdk_1.Protocol.V2)) {
log_1.log.info({ protocols, swapType: tradeType }, 'Routing across V2');
quotePromises.push(this.getV2Quotes(tokenIn, tokenOut, amounts, percents, quoteToken, gasPriceWei, tradeType, routingConfig));
}
}
const routesWithValidQuotesByProtocol = await Promise.all(quotePromises);
let allRoutesWithValidQuotes = [];
let allCandidatePools = [];
for (const { routesWithValidQuotes, candidatePools, } of routesWithValidQuotesByProtocol) {
allRoutesWithValidQuotes = [
...allRoutesWithValidQuotes,
...routesWithValidQuotes,
];
allCandidatePools = [...allCandidatePools, candidatePools];
}
if (allRoutesWithValidQuotes.length == 0) {
log_1.log.info({ allRoutesWithValidQuotes }, 'Received no valid quotes');
return null;
}
// Given all the quotes for all the amounts for all the routes, find the best combination.
const beforeBestSwap = Date.now();
const swapRouteRaw = await (0, best_swap_route_1.getBestSwapRoute)(amount, percents, allRoutesWithValidQuotes, tradeType, this.chainId, routingConfig, gasModel);
if (!swapRouteRaw) {
return null;
}
const { quote, quoteGasAdjusted, estimatedGasUsed, routes: routeAmounts, estimatedGasUsedQuoteToken, estimatedGasUsedUSD, } = swapRouteRaw;
// Build Trade object that represents the optimal swap.
const trade = (0, methodParameters_1.buildTrade)(currencyIn, currencyOut, tradeType, routeAmounts);
let methodParameters;
// If user provided recipient, deadline etc. we also generate the calldata required to execute
// the swap and return it too.
if (swapConfig) {
methodParameters = (0, methodParameters_1.buildSwapMethodParameters)(trade, swapConfig);
}
metric_1.metric.putMetric('FindBestSwapRoute', Date.now() - beforeBestSwap, metric_1.MetricLoggerUnit.Milliseconds);
metric_1.metric.putMetric(`QuoteFoundForChain${this.chainId}`, 1, metric_1.MetricLoggerUnit.Count);
this.emitPoolSelectionMetrics(swapRouteRaw, allCandidatePools);
return {
quote,
quoteGasAdjusted,
estimatedGasUsed,
estimatedGasUsedQuoteToken,
estimatedGasUsedUSD,
gasPriceWei,
route: routeAmounts,
trade,
methodParameters,
blockNumber: bignumber_1.BigNumber.from(await blockNumber),
};
}
async applyTokenValidatorToPools(pools, isInvalidFn) {
if (!this.tokenValidatorProvider) {
return pools;
}
log_1.log.info(`Running token validator on ${pools.length} pools`);
const tokens = lodash_1.default.flatMap(pools, (pool) => [pool.token0, pool.token1]);
const tokenValidationResults = await this.tokenValidatorProvider.validateTokens(tokens);
const poolsFiltered = lodash_1.default.filter(pools, (pool) => {
const token0Validation = tokenValidationResults.getValidationByToken(pool.token0);
const token1Validation = tokenValidationResults.getValidationByToken(pool.token1);
const token0Invalid = isInvalidFn(pool.token0, token0Validation);
const token1Invalid = isInvalidFn(pool.token1, token1Validation);
if (token0Invalid || token1Invalid) {
log_1.log.info(`Dropping pool ${(0, routes_1.poolToString)(pool)} because token is invalid. ${pool.token0.symbol}: ${token0Validation}, ${pool.token1.symbol}: ${token1Validation}`);
}
return !token0Invalid && !token1Invalid;
});
return poolsFiltered;
}
async getV3Quotes(tokenIn, tokenOut, amounts, percents, quoteToken, gasModel, swapType, routingConfig) {
log_1.log.info('Starting to get V3 quotes');
// Fetch all the pools that we will consider routing via. There are thousands
// of pools, so we filter them to a set of candidate pools that we expect will
// result in good prices.
const { poolAccessor, candidatePools } = await (0, get_candidate_pools_1.getV3CandidatePools)({
tokenIn,
tokenOut,
tokenProvider: this.tokenProvider,
blockedTokenListProvider: this.blockedTokenListProvider,
poolProvider: this.v3PoolProvider,
routeType: swapType,
subgraphProvider: this.v3SubgraphProvider,
routingConfig,
chainId: this.chainId,
});
const poolsRaw = poolAccessor.getAllPools();
// Drop any pools that contain fee on transfer tokens (not supported by v3) or have issues with being transferred.
const pools = await this.applyTokenValidatorToPools(poolsRaw, (token, tokenValidation) => {
// If there is no available validation result we assume the token is fine.
if (!tokenValidation) {
return false;
}
// Only filters out *intermediate* pools that involve tokens that we detect
// cant be transferred. This prevents us trying to route through tokens that may
// not be transferrable, but allows users to still swap those tokens if they
// specify.
//
if (tokenValidation == token_validator_provider_1.TokenValidationResult.STF &&
(token.equals(tokenIn) || token.equals(tokenOut))) {
return false;
}
return (tokenValidation == token_validator_provider_1.TokenValidationResult.FOT ||
tokenValidation == token_validator_provider_1.TokenValidationResult.STF);
});
// Given all our candidate pools, compute all the possible ways to route from tokenIn to tokenOut.
const { maxSwapsPerPath } = routingConfig;
const routes = (0, compute_all_routes_1.computeAllV3Routes)(tokenIn, tokenOut, pools, maxSwapsPerPath);
if (routes.length == 0) {
return { routesWithValidQuotes: [], candidatePools };
}
// For all our routes, and all the fractional amounts, fetch quotes on-chain.
const quoteFn = swapType == sdk_core_1.TradeType.EXACT_INPUT
? this.v3QuoteProvider.getQuotesManyExactIn.bind(this.v3QuoteProvider)
: this.v3QuoteProvider.getQuotesManyExactOut.bind(this.v3QuoteProvider);
const beforeQuotes = Date.now();
log_1.log.info(`Getting quotes for V3 for ${routes.length} routes with ${amounts.length} amounts per route.`);
const { routesWithQuotes } = await quoteFn(amounts, routes, {
blockNumber: routingConfig.blockNumber,
});
metric_1.metric.putMetric('V3QuotesLoad', Date.now() - beforeQuotes, metric_1.MetricLoggerUnit.Milliseconds);
metric_1.metric.putMetric('V3QuotesFetched', (0, lodash_1.default)(routesWithQuotes)
.map(([, quotes]) => quotes.length)
.sum(), metric_1.MetricLoggerUnit.Count);
const routesWithValidQuotes = [];
for (const routeWithQuote of routesWithQuotes) {
const [route, quotes] = routeWithQuote;
for (let i = 0; i < quotes.length; i++) {
const percent = percents[i];
const amountQuote = quotes[i];
const { quote, amount, sqrtPriceX96AfterList, initializedTicksCrossedList, gasEstimate, } = amountQuote;
if (!quote ||
!sqrtPriceX96AfterList ||
!initializedTicksCrossedList ||
!gasEstimate) {
log_1.log.debug({
route: (0, routes_1.routeToString)(route),
amountQuote,
}, 'Dropping a null V3 quote for route.');
continue;
}
const routeWithValidQuote = new route_with_valid_quote_1.V3RouteWithValidQuote({
route,
rawQuote: quote,
amount,
percent,
sqrtPriceX96AfterList,
initializedTicksCrossedList,
quoterGasEstimate: gasEstimate,
gasModel,
quoteToken,
tradeType: swapType,
v3PoolProvider: this.v3PoolProvider,
});
routesWithValidQuotes.push(routeWithValidQuote);
}
}
return { routesWithValidQuotes, candidatePools };
}
async getV2Quotes(tokenIn, tokenOut, amounts, percents, quoteToken, gasPriceWei, swapType, routingConfig) {
log_1.log.info('Starting to get V2 quotes');
// Fetch all the pools that we will consider routing via. There are thousands
// of pools, so we filter them to a set of candidate pools that we expect will
// result in good prices.
const { poolAccessor, candidatePools } = await (0, get_candidate_pools_1.getV2CandidatePools)({
tokenIn,
tokenOut,
tokenProvider: this.tokenProvider,
blockedTokenListProvider: this.blockedTokenListProvider,
poolProvider: this.v2PoolProvider,
routeType: swapType,
subgraphProvider: this.v2SubgraphProvider,
routingConfig,
chainId: this.chainId,
});
const poolsRaw = poolAccessor.getAllPools();
// Drop any pools that contain tokens that can not be transferred according to the token validator.
const pools = await this.applyTokenValidatorToPools(poolsRaw, (token, tokenValidation) => {
// If there is no available validation result we assume the token is fine.
if (!tokenValidation) {
return false;
}
// Only filters out *intermediate* pools that involve tokens that we detect
// cant be transferred. This prevents us trying to route through tokens that may
// not be transferrable, but allows users to still swap those tokens if they
// specify.
if (tokenValidation == token_validator_provider_1.TokenValidationResult.STF &&
(token.equals(tokenIn) || token.equals(tokenOut))) {
return false;
}
return tokenValidation == token_validator_provider_1.TokenValidationResult.STF;
});
// Given all our candidate pools, compute all the possible ways to route from tokenIn to tokenOut.
const { maxSwapsPerPath } = routingConfig;
const routes = (0, compute_all_routes_1.computeAllV2Routes)(tokenIn, tokenOut, pools, maxSwapsPerPath);
if (routes.length == 0) {
return { routesWithValidQuotes: [], candidatePools };
}
// For all our routes, and all the fractional amounts, fetch quotes on-chain.
const quoteFn = swapType == sdk_core_1.TradeType.EXACT_INPUT
? this.v2QuoteProvider.getQuotesManyExactIn.bind(this.v2QuoteProvider)
: this.v2QuoteProvider.getQuotesManyExactOut.bind(this.v2QuoteProvider);
const beforeQuotes = Date.now();
log_1.log.info(`Getting quotes for V2 for ${routes.length} routes with ${amounts.length} amounts per route.`);
const { routesWithQuotes } = await quoteFn(amounts, routes);
const gasModel = await this.v2GasModelFactory.buildGasModel(this.chainId, gasPriceWei, this.v2PoolProvider, quoteToken);
metric_1.metric.putMetric('V2QuotesLoad', Date.now() - beforeQuotes, metric_1.MetricLoggerUnit.Milliseconds);
metric_1.metric.putMetric('V2QuotesFetched', (0, lodash_1.default)(routesWithQuotes)
.map(([, quotes]) => quotes.length)
.sum(), metric_1.MetricLoggerUnit.Count);
const routesWithValidQuotes = [];
for (const routeWithQuote of routesWithQuotes) {
const [route, quotes] = routeWithQuote;
for (let i = 0; i < quotes.length; i++) {
const percent = percents[i];
const amountQuote = quotes[i];
const { quote, amount } = amountQuote;
if (!quote) {
log_1.log.debug({
route: (0, routes_1.routeToString)(route),
amountQuote,
}, 'Dropping a null V2 quote for route.');
continue;
}
const routeWithValidQuote = new route_with_valid_quote_1.V2RouteWithValidQuote({
route,
rawQuote: quote,
amount,
percent,
gasModel,
quoteToken,
tradeType: swapType,
v2PoolProvider: this.v2PoolProvider,
});
routesWithValidQuotes.push(routeWithValidQuote);
}
}
return { routesWithValidQuotes, candidatePools };
}
// Note multiplications here can result in a loss of precision in the amounts (e.g. taking 50% of 101)
// This is reconcilled at the end of the algorithm by adding any lost precision to one of
// the splits in the route.
getAmountDistribution(amount, routingConfig) {
const { distributionPercent } = routingConfig;
const percents = [];
const amounts = [];
for (let i = 1; i <= 100 / distributionPercent; i++) {
percents.push(i * distributionPercent);
amounts.push(amount.multiply(new sdk_core_1.Fraction(i * distributionPercent, 100)));
}
return [percents, amounts];
}
async buildSwapAndAddMethodParameters(trade, swapAndAddOptions, swapAndAddParameters) {
const { swapOptions: { recipient, slippageTolerance, deadline, inputTokenPermit }, addLiquidityOptions: addLiquidityConfig, } = swapAndAddOptions;
const preLiquidityPosition = swapAndAddParameters.preLiquidityPosition;
const finalBalanceTokenIn = swapAndAddParameters.initialBalanceTokenIn.subtract(trade.inputAmount);
const finalBalanceTokenOut = swapAndAddParameters.initialBalanceTokenOut.add(trade.outputAmount);
const approvalTypes = await this.swapRouterProvider.getApprovalType(finalBalanceTokenIn, finalBalanceTokenOut);
const zeroForOne = finalBalanceTokenIn.currency.wrapped.sortsBefore(finalBalanceTokenOut.currency.wrapped);
return router_sdk_1.SwapRouter.swapAndAddCallParameters(trade, {
recipient,
slippageTolerance,
deadlineOrPreviousBlockhash: deadline,
inputTokenPermit,
}, v3_sdk_1.Position.fromAmounts({
pool: preLiquidityPosition.pool,
tickLower: preLiquidityPosition.tickLower,
tickUpper: preLiquidityPosition.tickUpper,
amount0: zeroForOne
? finalBalanceTokenIn.quotient.toString()
: finalBalanceTokenOut.quotient.toString(),
amount1: zeroForOne
? finalBalanceTokenOut.quotient.toString()
: finalBalanceTokenIn.quotient.toString(),
useFullPrecision: false,
}), addLiquidityConfig, approvalTypes.approvalTokenIn, approvalTypes.approvalTokenOut);
}
emitPoolSelectionMetrics(swapRouteRaw, allPoolsBySelection) {
const poolAddressesUsed = new Set();
const { routes: routeAmounts } = swapRouteRaw;
(0, lodash_1.default)(routeAmounts)
.flatMap((routeAmount) => {
const { poolAddresses } = routeAmount;
return poolAddresses;
})
.forEach((address) => {
poolAddressesUsed.add(address.toLowerCase());
});
for (const poolsBySelection of allPoolsBySelection) {
const { protocol } = poolsBySelection;
lodash_1.default.forIn(poolsBySelection.selections, (pools, topNSelection) => {
const topNUsed = lodash_1.default.findLastIndex(pools, (pool) => poolAddressesUsed.has(pool.id.toLowerCase())) + 1;
metric_1.metric.putMetric(lodash_1.default.capitalize(`${protocol}${topNSelection}`), topNUsed, metric_1.MetricLoggerUnit.Count);
});
}
let hasV3Route = false;
let hasV2Route = false;
for (const routeAmount of routeAmounts) {
if (routeAmount.protocol == router_sdk_1.Protocol.V3) {
hasV3Route = true;
}
if (routeAmount.protocol == router_sdk_1.Protocol.V2) {
hasV2Route = true;
}
}
if (hasV3Route && hasV2Route) {
metric_1.metric.putMetric(`V3AndV2SplitRoute`, 1, metric_1.MetricLoggerUnit.Count);
metric_1.metric.putMetric(`V3AndV2SplitRouteForChain${this.chainId}`, 1, metric_1.MetricLoggerUnit.Count);
}
else if (hasV3Route) {
if (routeAmounts.length > 1) {
metric_1.metric.putMetric(`V3SplitRoute`, 1, metric_1.MetricLoggerUnit.Count);
metric_1.metric.putMetric(`V3SplitRouteForChain${this.chainId}`, 1, metric_1.MetricLoggerUnit.Count);
}
else {
metric_1.metric.putMetric(`V3Route`, 1, metric_1.MetricLoggerUnit.Count);
metric_1.metric.putMetric(`V3RouteForChain${this.chainId}`, 1, metric_1.MetricLoggerUnit.Count);
}
}
else if (hasV2Route) {
if (routeAmounts.length > 1) {
metric_1.metric.putMetric(`V2SplitRoute`, 1, metric_1.MetricLoggerUnit.Count);
metric_1.metric.putMetric(`V2SplitRouteForChain${this.chainId}`, 1, metric_1.MetricLoggerUnit.Count);
}
else {
metric_1.metric.putMetric(`V2Route`, 1, metric_1.MetricLoggerUnit.Count);
metric_1.metric.putMetric(`V2RouteForChain${this.chainId}`, 1, metric_1.MetricLoggerUnit.Count);
}
}
}
calculateOptimalRatio(position, sqrtRatioX96, zeroForOne) {
const upperSqrtRatioX96 = v3_sdk_1.TickMath.getSqrtRatioAtTick(position.tickUpper);
const lowerSqrtRatioX96 = v3_sdk_1.TickMath.getSqrtRatioAtTick(position.tickLower);
// returns Fraction(0, 1) for any out of range position regardless of zeroForOne. Implication: function
// cannot be used to determine the trading direction of out of range positions.
if (jsbi_1.default.greaterThan(sqrtRatioX96, upperSqrtRatioX96) ||
jsbi_1.default.lessThan(sqrtRatioX96, lowerSqrtRatioX96)) {
return new sdk_core_1.Fraction(0, 1);
}
const precision = jsbi_1.default.BigInt('1' + '0'.repeat(18));
let optimalRatio = new sdk_core_1.Fraction(v3_sdk_1.SqrtPriceMath.getAmount0Delta(sqrtRatioX96, upperSqrtRatioX96, precision, true), v3_sdk_1.SqrtPriceMath.getAmount1Delta(sqrtRatioX96, lowerSqrtRatioX96, precision, true));
if (!zeroForOne)
optimalRatio = optimalRatio.invert();
return optimalRatio;
}
absoluteValue(fraction) {
const numeratorAbs = jsbi_1.default.lessThan(fraction.numerator, jsbi_1.default.BigInt(0))
? jsbi_1.default.unaryMinus(fraction.numerator)
: fraction.numerator;
const denominatorAbs = jsbi_1.default.lessThan(fraction.denominator, jsbi_1.default.BigInt(0))
? jsbi_1.default.unaryMinus(fraction.denominator)
: fraction.denominator;
return new sdk_core_1.Fraction(numeratorAbs, denominatorAbs);
}
getBlockNumberPromise() {
return (0, async_retry_1.default)(async (_b, attempt) => {
if (attempt > 1) {
log_1.log.info(`Get block number attempt ${attempt}`);
}
return this.provider.getBlockNumber();
}, {
retries: 2,
minTimeout: 100,
maxTimeout: 1000,
});
}
}
exports.AlphaRouter = AlphaRouter;
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