@uniswap/smart-order-router
Version:
Uniswap Smart Order Router
342 lines • 26.9 kB
JavaScript
import { ChainId } from '@uniswap/sdk-core';
import retry from 'async-retry';
import Timeout from 'await-timeout';
import { gql, GraphQLClient } from 'graphql-request';
import _ from 'lodash';
import { log } from '../../util/log';
import { metric } from '../../util/metric';
const SUBGRAPH_URL_BY_CHAIN = {
[ChainId.MAINNET]: 'https://api.thegraph.com/subgraphs/name/ianlapham/uniswap-v2-dev',
};
const PAGE_SIZE = 1000; // 1k is max possible query size from subgraph.
export class V2SubgraphProvider {
constructor(chainId, retries = 2, timeout = 360000, rollback = true, pageSize = PAGE_SIZE, trackedEthThreshold = 0.025, untrackedUsdThreshold = Number.MAX_VALUE, subgraphUrlOverride, bearerToken) {
var _a;
this.chainId = chainId;
this.retries = retries;
this.timeout = timeout;
this.rollback = rollback;
this.pageSize = pageSize;
this.trackedEthThreshold = trackedEthThreshold;
this.untrackedUsdThreshold = untrackedUsdThreshold;
this.subgraphUrlOverride = subgraphUrlOverride;
this.bearerToken = bearerToken;
const subgraphUrl = (_a = this.subgraphUrlOverride) !== null && _a !== void 0 ? _a : SUBGRAPH_URL_BY_CHAIN[this.chainId];
if (!subgraphUrl) {
throw new Error(`No subgraph url for chain id: ${this.chainId}`);
}
log.info('bearerToken is', this.bearerToken);
if (this.bearerToken) {
this.client = new GraphQLClient(subgraphUrl, {
headers: {
authorization: `Bearer ${this.bearerToken}`,
},
});
}
else {
this.client = new GraphQLClient(subgraphUrl);
}
}
async getPools(_tokenIn, _tokenOut, providerConfig) {
const beforeAll = Date.now();
let blockNumber = (providerConfig === null || providerConfig === void 0 ? void 0 : providerConfig.blockNumber)
? await providerConfig.blockNumber
: undefined;
log.info(`Getting V2 pools from the subgraph with page size ${this.pageSize}${(providerConfig === null || providerConfig === void 0 ? void 0 : providerConfig.blockNumber)
? ` as of block ${providerConfig === null || providerConfig === void 0 ? void 0 : providerConfig.blockNumber}`
: ''}.`);
// TODO: Remove. Temporary fix to ensure tokens without trackedReserveETH are in the list.
const FEI = '0x956f47f50a910163d8bf957cf5846d573e7f87ca';
const virtualTokenAddress = '0x0b3e328455c4059eeb9e3f84b5543f74e24e7e1b'.toLowerCase();
// Define separate queries for each filtering condition
// Note: GraphQL doesn't support OR conditions, so we need separate queries for each condition
const queries = [
// 1. FEI token pools - split into two queries since OR is not supported
{
name: 'FEI pools (token0)',
query: gql `
query getFEIPoolsToken0($pageSize: Int!, $id: String, $feiToken: String!) {
pairs(
first: $pageSize
${blockNumber ? `block: { number: ${blockNumber} }` : ``}
where: {
id_gt: $id,
token0: $feiToken
}
) {
id
token0 { id, symbol }
token1 { id, symbol }
totalSupply
trackedReserveETH
reserveETH
reserveUSD
}
}
`,
variables: { feiToken: FEI },
},
{
name: 'FEI pools (token1)',
query: gql `
query getFEIPoolsToken1($pageSize: Int!, $id: String, $feiToken: String!) {
pairs(
first: $pageSize
${blockNumber ? `block: { number: ${blockNumber} }` : ``}
where: {
id_gt: $id,
token1: $feiToken
}
) {
id
token0 { id, symbol }
token1 { id, symbol }
totalSupply
trackedReserveETH
reserveETH
reserveUSD
}
}
`,
variables: { feiToken: FEI },
},
// 2. Virtual pair pools (only for BASE chain) - split into two queries
...(this.chainId === ChainId.BASE
? [
{
name: 'Virtual pair pools (token0)',
query: gql `
query getVirtualPoolsToken0($pageSize: Int!, $id: String, $virtualToken: String!) {
pairs(
first: $pageSize
${blockNumber ? `block: { number: ${blockNumber} }` : ``}
where: {
id_gt: $id,
token0: $virtualToken
}
) {
id
token0 { id, symbol }
token1 { id, symbol }
totalSupply
trackedReserveETH
reserveETH
reserveUSD
}
}
`,
variables: { virtualToken: virtualTokenAddress },
},
{
name: 'Virtual pair pools (token1)',
query: gql `
query getVirtualPoolsToken1($pageSize: Int!, $id: String, $virtualToken: String!) {
pairs(
first: $pageSize
${blockNumber ? `block: { number: ${blockNumber} }` : ``}
where: {
id_gt: $id,
token1: $virtualToken
}
) {
id
token0 { id, symbol }
token1 { id, symbol }
totalSupply
trackedReserveETH
reserveETH
reserveUSD
}
}
`,
variables: { virtualToken: virtualTokenAddress },
},
]
: []),
// 3. High tracked reserve ETH pools
{
name: 'High tracked reserve ETH pools',
query: gql `
query getHighTrackedReservePools($pageSize: Int!, $id: String, $threshold: String!) {
pairs(
first: $pageSize
${blockNumber ? `block: { number: ${blockNumber} }` : ``}
where: {
id_gt: $id,
trackedReserveETH_gt: $threshold
}
) {
id
token0 { id, symbol }
token1 { id, symbol }
totalSupply
trackedReserveETH
reserveETH
reserveUSD
}
}
`,
variables: { threshold: this.trackedEthThreshold.toString() },
},
// 4. High untracked USD pools
{
name: 'High untracked USD pools',
query: gql `
query getHighUSDReservePools($pageSize: Int!, $id: String, $threshold: String!) {
pairs(
first: $pageSize
${blockNumber ? `block: { number: ${blockNumber} }` : ``}
where: {
id_gt: $id,
reserveUSD_gt: $threshold
}
) {
id
token0 { id, symbol }
token1 { id, symbol }
totalSupply
trackedReserveETH
reserveETH
reserveUSD
}
}
`,
variables: { threshold: this.untrackedUsdThreshold.toString() },
},
];
let allPools = [];
let outerRetries = 0;
await retry(async () => {
const timeout = new Timeout();
const fetchPoolsForQuery = async (queryConfig) => {
let lastId = '';
let pools = [];
let poolsPage = [];
let totalPages = 0;
let retries = 0;
do {
totalPages += 1;
const start = Date.now();
log.info(`Starting fetching for ${queryConfig.name} page ${totalPages} with page size ${this.pageSize}`);
await retry(async () => {
const before = Date.now();
const poolsResult = await this.client.request(queryConfig.query, {
pageSize: this.pageSize,
id: lastId,
...queryConfig.variables,
});
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.${queryConfig.name
.replace(/\s+/g, '_')
.toLowerCase()}.paginate.latency`, Date.now() - before);
poolsPage = poolsResult.pairs;
pools = pools.concat(poolsPage);
if (pools.length > 0) {
lastId = pools[pools.length - 1].id;
}
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.${queryConfig.name
.replace(/\s+/g, '_')
.toLowerCase()}.paginate.pageSize`, poolsPage.length);
}, {
retries: this.retries,
onRetry: (err, retry) => {
retries += 1;
log.error({ err, lastId }, `Failed request for ${queryConfig.name} page of pools from subgraph. Retry attempt: ${retry}. LastId: ${lastId}`);
},
});
log.info(`Fetched ${poolsPage.length} pools for ${queryConfig.name} in ${Date.now() - start}ms`);
} while (poolsPage.length > 0);
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.${queryConfig.name
.replace(/\s+/g, '_')
.toLowerCase()}.paginate`, totalPages);
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.${queryConfig.name
.replace(/\s+/g, '_')
.toLowerCase()}.pairs.length`, pools.length);
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.${queryConfig.name
.replace(/\s+/g, '_')
.toLowerCase()}.paginate.retries`, retries);
return pools;
};
try {
// Fetch pools for each query in parallel
const poolPromises = queries.map((queryConfig) => fetchPoolsForQuery(queryConfig));
const allPoolsArrays = await Promise.all(poolPromises);
// Merge all results and deduplicate by pool ID
const poolMap = new Map();
allPoolsArrays.forEach((pools) => {
pools.forEach((pool) => {
poolMap.set(pool.id, pool);
});
});
allPools = Array.from(poolMap.values());
const getPoolsPromise = Promise.resolve(allPools);
const timerPromise = timeout.set(this.timeout).then(() => {
throw new Error(`Timed out getting pools from subgraph: ${this.timeout}`);
});
allPools = await Promise.race([getPoolsPromise, timerPromise]);
return;
}
catch (err) {
log.error({ err }, 'Error fetching V2 Subgraph Pools.');
throw err;
}
finally {
timeout.clear();
}
}, {
retries: this.retries,
onRetry: (err, retry) => {
outerRetries += 1;
if (this.rollback &&
blockNumber &&
_.includes(err.message, 'indexed up to')) {
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.indexError`, 1);
blockNumber = blockNumber - 10;
log.info(`Detected subgraph indexing error. Rolled back block number to: ${blockNumber}`);
}
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.timeout`, 1);
allPools = [];
log.info({ err }, `Failed to get pools from subgraph. Retry attempt: ${retry}`);
},
});
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.retries`, outerRetries);
// Apply the same filtering logic to ensure consistency
const beforeFilter = Date.now();
const poolsSanitized = allPools
.filter((pool) => {
return (pool.token0.id == FEI ||
pool.token1.id == FEI ||
this.isVirtualPairBaseV2Pool(pool) ||
parseFloat(pool.trackedReserveETH) > this.trackedEthThreshold ||
parseFloat(pool.reserveUSD) > this.untrackedUsdThreshold);
})
.map((pool) => {
return {
id: pool.id.toLowerCase(),
token0: {
id: pool.token0.id.toLowerCase(),
},
token1: {
id: pool.token1.id.toLowerCase(),
},
supply: parseFloat(pool.totalSupply),
reserve: parseFloat(pool.trackedReserveETH),
reserveUSD: parseFloat(pool.reserveUSD),
};
});
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.filter.latency`, Date.now() - beforeFilter);
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.untracked.length`, poolsSanitized.length);
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.untracked.percent`, (poolsSanitized.length / allPools.length) * 100);
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools`, 1);
metric.putMetric(`V2SubgraphProvider.chain_${this.chainId}.getPools.latency`, Date.now() - beforeAll);
log.info(`Got ${allPools.length} V2 pools from the subgraph (after deduplication). ${poolsSanitized.length} after filtering`);
return poolsSanitized;
}
// This method checks if a given pool contains the VIRTUAL token.
isVirtualPairBaseV2Pool(pool) {
const virtualTokenAddress = '0x0b3e328455c4059eeb9e3f84b5543f74e24e7e1b'.toLowerCase();
return (this.chainId === ChainId.BASE &&
(pool.token0.id.toLowerCase() === virtualTokenAddress ||
pool.token1.id.toLowerCase() === virtualTokenAddress));
}
}
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