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@sky-mavis/smart-order-router

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"use strict"; var __importDefault = (this && this.__importDefault) || function (mod) { return (mod && mod.__esModule) ? mod : { "default": mod }; }; Object.defineProperty(exports, "__esModule", { value: true }); exports.V3PoolProvider = void 0; const katana_core_1 = require("@sky-mavis/katana-core"); const v3_sdk_1 = require("@uniswap/v3-sdk"); const async_retry_1 = __importDefault(require("async-retry")); const lodash_1 = __importDefault(require("lodash")); const IUniswapV3PoolState__factory_1 = require("../../types/v3/factories/IUniswapV3PoolState__factory"); const log_1 = require("../../util/log"); const routes_1 = require("../../util/routes"); class V3PoolProvider { /** * Creates an instance of V3PoolProvider. * @param chainId The chain id to use. * @param multicall2Provider The multicall provider to use to get the pools. * @param retryOptions The retry options for each call to the multicall. */ constructor(chainId, multicall2Provider, retryOptions = { retries: 2, minTimeout: 50, maxTimeout: 500, }) { this.chainId = chainId; this.multicall2Provider = multicall2Provider; this.retryOptions = retryOptions; // Computing pool addresses is slow as it requires hashing, encoding etc. // Addresses never change so can always be cached. this.POOL_ADDRESS_CACHE = {}; } async getPools(tokenPairs, providerConfig) { const poolAddressSet = new Set(); const sortedTokenPairs = []; const sortedPoolAddresses = []; for (const tokenPair of tokenPairs) { const [tokenA, tokenB, feeAmount] = tokenPair; const { poolAddress, token0, token1 } = this.getPoolAddress(tokenA, tokenB, feeAmount); if (poolAddressSet.has(poolAddress)) { continue; } poolAddressSet.add(poolAddress); sortedTokenPairs.push([token0, token1, feeAmount]); sortedPoolAddresses.push(poolAddress); } log_1.log.debug(`getPools called with ${tokenPairs.length} token pairs. Deduped down to ${poolAddressSet.size}`); const [slot0Results, liquidityResults] = await Promise.all([ this.getPoolsData(sortedPoolAddresses, 'slot0', providerConfig), this.getPoolsData(sortedPoolAddresses, 'liquidity', providerConfig), ]); log_1.log.info(`Got liquidity and slot0s for ${poolAddressSet.size} pools ${(providerConfig === null || providerConfig === void 0 ? void 0 : providerConfig.blockNumber) ? `as of block: ${providerConfig === null || providerConfig === void 0 ? void 0 : providerConfig.blockNumber}.` : ``}`); const poolAddressToPool = {}; const invalidPools = []; for (let i = 0; i < sortedPoolAddresses.length; i++) { const slot0Result = slot0Results[i]; const liquidityResult = liquidityResults[i]; // These properties tell us if a pool is valid and initialized or not. if (!(slot0Result === null || slot0Result === void 0 ? void 0 : slot0Result.success) || !(liquidityResult === null || liquidityResult === void 0 ? void 0 : liquidityResult.success) || slot0Result.result.sqrtPriceX96.eq(0)) { const [token0, token1, fee] = sortedTokenPairs[i]; invalidPools.push([token0, token1, fee]); continue; } const [token0, token1, fee] = sortedTokenPairs[i]; const slot0 = slot0Result.result; const liquidity = liquidityResult.result[0]; const pool = new v3_sdk_1.Pool(token0, token1, fee, slot0.sqrtPriceX96.toString(), liquidity.toString(), slot0.tick); const poolAddress = sortedPoolAddresses[i]; poolAddressToPool[poolAddress] = pool; } if (invalidPools.length > 0) { log_1.log.info({ invalidPools: lodash_1.default.map(invalidPools, ([token0, token1, fee]) => `${token0.symbol}/${token1.symbol}/${fee / 10000}%`), }, `${invalidPools.length} pools invalid after checking their slot0 and liquidity results. Dropping.`); } const poolStrs = lodash_1.default.map(Object.values(poolAddressToPool), routes_1.poolToString); log_1.log.debug({ poolStrs }, `Found ${poolStrs.length} valid pools`); return { getPool: (tokenA, tokenB, feeAmount) => { const { poolAddress } = this.getPoolAddress(tokenA, tokenB, feeAmount); return poolAddressToPool[poolAddress]; }, getPoolByAddress: (address) => poolAddressToPool[address], getAllPools: () => Object.values(poolAddressToPool), }; } getPoolAddress(tokenA, tokenB, feeAmount) { const [token0, token1] = tokenA.sortsBefore(tokenB) ? [tokenA, tokenB] : [tokenB, tokenA]; const cacheKey = `${this.chainId}/${token0.address}/${token1.address}/${feeAmount}`; const cachedAddress = this.POOL_ADDRESS_CACHE[cacheKey]; if (cachedAddress) { return { poolAddress: cachedAddress, token0, token1 }; } const poolAddress = (0, katana_core_1.computePoolAddress)({ chainId: this.chainId, tokenA: token0, tokenB: token1, fee: feeAmount, }); this.POOL_ADDRESS_CACHE[cacheKey] = poolAddress; return { poolAddress, token0, token1 }; } async getPoolsData(poolAddresses, functionName, providerConfig) { const { results, blockNumber } = await (0, async_retry_1.default)(async () => { return this.multicall2Provider.callSameFunctionOnMultipleContracts({ addresses: poolAddresses, contractInterface: IUniswapV3PoolState__factory_1.IUniswapV3PoolState__factory.createInterface(), functionName: functionName, providerConfig, }); }, this.retryOptions); log_1.log.debug(`Pool data fetched as of block ${blockNumber}`); return results; } } exports.V3PoolProvider = V3PoolProvider; //# 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