@maxosllc/smart-order-router
Version:
BlockDAG Smart Order Router
111 lines • 9.46 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.V4PoolProvider = exports.sortsBefore = void 0;
const v4_sdk_1 = require("@uniswap/v4-sdk");
const async_retry_1 = __importDefault(require("async-retry"));
const util_1 = require("../../util");
const StateView__factory_1 = require("../../types/other/factories/StateView__factory");
const pool_provider_1 = require("../pool-provider");
// TODO: export sortsBefore from v4-sdk https://github.com/Uniswap/sdks/tree/main/sdks/v4-sdk/src/utils to avoid duplication
function sortsBefore(currencyA, currencyB) {
if (currencyA.isNative)
return true;
if (currencyB.isNative)
return false;
return currencyA.wrapped.sortsBefore(currencyB.wrapped);
}
exports.sortsBefore = sortsBefore;
class V4PoolProvider extends pool_provider_1.PoolProvider {
/**
* Creates an instance of V4PoolProvider.
* @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,
}) {
super(chainId, multicall2Provider, retryOptions);
// Computing pool id is slow as it requires hashing, encoding etc.
// Addresses never change so can always be cached.
this.POOL_ID_CACHE = {};
}
async getPools(currencyPairs, providerConfig) {
return await super.getPoolsInternal(currencyPairs, providerConfig);
}
getPoolId(currencyA, currencyB, fee, tickSpacing, hooks) {
const { poolIdentifier, currency0, currency1 } = this.getPoolIdentifier([
currencyA,
currencyB,
fee,
tickSpacing,
hooks,
]);
return { poolId: poolIdentifier, currency0, currency1 };
}
getLiquidityFunctionName() {
return 'getLiquidity';
}
getSlot0FunctionName() {
return 'getSlot0';
}
async getPoolsData(poolIds, functionName, providerConfig) {
const { results, blockNumber } = await (0, async_retry_1.default)(async () => {
// NOTE: V4 pools are a singleton living under PoolsManager.
// We have to retrieve the pool data from the state view contract.
// To begin with, we will be consistent with how v4 subgraph retrieves the pool state - via state view.
return this.multicall2Provider.callSameFunctionOnContractWithMultipleParams({
address: util_1.STATE_VIEW_ADDRESSES[this.chainId],
contractInterface: StateView__factory_1.StateView__factory.createInterface(),
functionName: functionName,
functionParams: poolIds.map((poolId) => [poolId]),
providerConfig,
});
}, this.retryOptions);
util_1.log.debug(`Pool data fetched as of block ${blockNumber}`);
return results;
}
getPoolIdentifier(pool) {
const [currencyA, currencyB, fee, tickSpacing, hooks] = pool;
const [currency0, currency1] = sortsBefore(currencyA, currencyB)
? [currencyA, currencyB]
: [currencyB, currencyA];
const currency0Addr = (0, util_1.getAddress)(currency0);
const currency1Addr = (0, util_1.getAddress)(currency1);
const cacheKey = `${this.chainId}/${currency0Addr}/${currency1Addr}/${fee}/${tickSpacing}/${hooks}`;
const cachedId = this.POOL_ID_CACHE[cacheKey];
if (cachedId) {
return { poolIdentifier: cachedId, currency0, currency1 };
}
const poolId = v4_sdk_1.Pool.getPoolId(currency0, currency1, fee, tickSpacing, hooks);
this.POOL_ID_CACHE[cacheKey] = poolId;
return { poolIdentifier: poolId, currency0, currency1 };
}
instantiatePool(pool, slot0, liquidity) {
const [currency0, currency1, fee, tickSpacing, hooks] = pool;
return new v4_sdk_1.Pool(currency0, currency1, fee, tickSpacing, hooks, slot0.sqrtPriceX96.toString(), liquidity.toString(), slot0.tick);
}
instantiatePoolAccessor(poolIdentifierToPool) {
return {
getPool: (currencyA, currencyB, fee, tickSpacing, hooks) => {
const { poolIdentifier } = this.getPoolIdentifier([
currencyA,
currencyB,
fee,
tickSpacing,
hooks,
]);
return poolIdentifierToPool[poolIdentifier];
},
getPoolById: (poolId) => poolIdentifierToPool[poolId],
getAllPools: () => Object.values(poolIdentifierToPool),
};
}
}
exports.V4PoolProvider = V4PoolProvider;
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