@xspswap/smart-order-router
Version:
XSwap Protocol V3 Smart Order Router
226 lines • 19.3 kB
JavaScript
import { TradeType } from '@x-swap-protocol/sdk-core';
import { FeeAmount } from '@x-swap-protocol/v3-sdk';
import _ from 'lodash';
import { V2_XDC_ADDITIONAL_BASES, V3_XDC_ADDITIONAL_BASES, } from '../../../providers';
import { log, metric, MetricLoggerUnit, routeToString, } from '../../../util';
import { MixedRouteWithValidQuote } from '../entities';
import { computeAllMixedRoutes } from '../functions/compute-all-routes';
import { BaseQuoter } from './base-quoter';
let paths = [];
const recFinder = (path, used, lastToken, dest, hops) => {
const hop = path.length;
if (hop < hops) {
if (!lastToken) {
return;
}
const additionalV3 = V3_XDC_ADDITIONAL_BASES[lastToken.address];
const additionalV2 = V2_XDC_ADDITIONAL_BASES[lastToken.address];
if (additionalV3) {
for (const ad of additionalV3) {
const adToken = ad;
const newPair = [lastToken, ...adToken];
const newPath = [...path, newPair];
if (adToken[0].address === dest.address) {
paths.push(newPath);
continue;
}
// const id = `${adToken[0].address}-${dest.address}-${adToken[1]}`
const id = adToken[0].address;
if (!used[id]) {
recFinder(newPath, { ...used, [id]: true }, adToken[0], dest, hops);
}
}
}
if (additionalV2) {
for (const ad of additionalV2) {
const adToken = ad;
const newPair = [lastToken, adToken];
const newPath = [...path, newPair];
if (adToken.address === dest.address) {
paths.push(newPath);
continue;
}
// const id = `${adToken.address}-${dest.address}`
const id = adToken.address;
if (!used[id]) {
recFinder(newPath, { ...used, [id]: true }, adToken, dest, hops);
}
}
}
}
};
export class MixedQuoter extends BaseQuoter {
constructor(v3SubgraphProvider, v3PoolProvider, v2SubgraphProvider, v2PoolProvider, onChainQuoteProvider, tokenProvider, chainId, blockedTokenListProvider, tokenValidatorProvider) {
super(tokenProvider, chainId, blockedTokenListProvider, tokenValidatorProvider);
this.v3SubgraphProvider = v3SubgraphProvider;
this.v3PoolProvider = v3PoolProvider;
this.v2SubgraphProvider = v2SubgraphProvider;
this.v2PoolProvider = v2PoolProvider;
this.onChainQuoteProvider = onChainQuoteProvider;
}
async getRoutes(tokenIn, tokenOut, tradeType, routingConfig) {
paths = [];
if (tradeType != TradeType.EXACT_INPUT) {
throw new Error('Mixed route quotes are not supported for EXACT_OUTPUT');
}
// const {
// V2poolAccessor,
// V3poolAccessor,
// candidatePools: mixedRouteCandidatePools,
// } = await getMixedRouteCandidatePools({
// tokenIn,
// tokenOut,
// tokenProvider: this.tokenProvider,
// blockedTokenListProvider: this.blockedTokenListProvider,
// v3poolProvider: this.v3PoolProvider,
// v2poolProvider: this.v2PoolProvider,
// routeType: tradeType,
// v3subgraphProvider: this.v3SubgraphProvider,
// v2subgraphProvider: this.v2SubgraphProvider,
// routingConfig,
// chainId: this.chainId,
// });
// const V3poolsRaw = V3poolAccessor.getAllPools();
// const V2poolsRaw = V2poolAccessor.getAllPools();
//
// const poolsRaw = [...V3poolsRaw, ...V2poolsRaw];
// const candidatePools = mixedRouteCandidatePools;
// 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: Currency,
// tokenValidation: TokenValidationResult | undefined
// ): boolean => {
// // 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 == TokenValidationResult.STF &&
// (token.equals(tokenIn) || token.equals(tokenOut))
// ) {
// return false;
// }
//
// return (
// tokenValidation == TokenValidationResult.FOT ||
// tokenValidation == TokenValidationResult.STF
// );
// }
// );
// vot tut nado v pools insert all needed pools and pairs
recFinder([], { [tokenIn.address]: true }, tokenIn, tokenOut, 5);
// console.log(
// paths.map((path) =>
// path
// .map(
// (p) => `(${p[2]?'V3':'V2'} ${p[0].symbol} - ${p[1].symbol} : ${p[2] ? p[2] / 10000 : '0.3'}% )`
// )
// .join(' --> ')
// )
// );
const uniquePools = {};
const uniquePairs = {};
paths.forEach((path) => {
path.forEach((pool) => {
if (pool[2]) {
const id = `${pool[0].address}-${pool[1].address}-${pool[2]}`;
uniquePools[id] = pool;
}
else {
const id = `${pool[0].address}-${pool[1].address}`;
uniquePairs[id] = pool;
}
});
});
const directV3 = tokenIn && tokenOut
? [
[tokenIn, tokenOut, FeeAmount.LOWEST],
[tokenIn, tokenOut, FeeAmount.LOW],
[tokenIn, tokenOut, FeeAmount.MEDIUM],
[tokenIn, tokenOut, FeeAmount.HIGH],
]
: [];
const poolsPaths = [...Object.values(uniquePools), ...directV3];
const directV2 = tokenIn && tokenOut ? [[tokenIn, tokenOut]] : [];
const pairsPaths = [...Object.values(uniquePairs), ...directV2];
const [poolAccessor, pairAccessor] = await Promise.all([
this.v3PoolProvider.getPools(poolsPaths),
this.v2PoolProvider.getPools(pairsPaths),
]);
const pools = poolAccessor.getAllPools();
const pairs = pairAccessor.getAllPools();
const poolsAndPairs = [...pairs, ...pools];
const { maxSwapsPerPath } = routingConfig;
const routes = computeAllMixedRoutes(tokenIn, tokenOut, poolsAndPairs, maxSwapsPerPath);
return {
routes,
};
}
async getQuotes(routes, amounts, percents, quoteToken, tradeType, routingConfig, candidatePools, gasModel) {
log.info('Starting to get mixed quotes');
if (gasModel === undefined) {
throw new Error('GasModel for MixedRouteWithValidQuote is required to getQuotes');
}
if (routes.length == 0) {
return { routesWithValidQuotes: [], candidatePools };
}
// For all our routes, and all the fractional amounts, fetch quotes on-chain.
const quoteFn = this.onChainQuoteProvider.getQuotesManyExactIn.bind(this.onChainQuoteProvider);
const beforeQuotes = Date.now();
log.info(`Getting quotes for mixed for ${routes.length} routes with ${amounts.length} amounts per route.`);
const { routesWithQuotes } = await quoteFn(amounts, routes, {
blockNumber: routingConfig.blockNumber,
});
metric.putMetric('MixedQuotesLoad', Date.now() - beforeQuotes, MetricLoggerUnit.Milliseconds);
metric.putMetric('MixedQuotesFetched', _(routesWithQuotes)
.map(([, quotes]) => quotes.length)
.sum(), 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.debug({
route: routeToString(route),
amountQuote,
}, 'Dropping a null mixed quote for route.');
continue;
}
const routeWithValidQuote = new MixedRouteWithValidQuote({
route,
rawQuote: quote,
amount,
percent,
sqrtPriceX96AfterList,
initializedTicksCrossedList,
quoterGasEstimate: gasEstimate,
mixedRouteGasModel: gasModel,
quoteToken,
tradeType,
v3PoolProvider: this.v3PoolProvider,
v2PoolProvider: this.v2PoolProvider,
});
routesWithValidQuotes.push(routeWithValidQuote);
}
}
return {
routesWithValidQuotes,
candidatePools,
};
}
}
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