Uniswap V3: listen all pools

listen.js

const ethers = require('ethers')

const poolAbi = [
    {
        "anonymous": false,
        "inputs": [
            {"indexed": true, "internalType": "address", "name": "sender", "type": "address"},
            {"indexed": true, "internalType": "address", "name": "recipient", "type": "address"},
            {"indexed": false, "internalType": "int256", "name": "amount0", "type": "int256"},
            {"indexed": false, "internalType": "int256", "name": "amount1", "type": "int256"},
            {"indexed": false, "internalType": "uint160", "name": "sqrtPriceX96", "type": "uint160"},
            {"indexed": false, "internalType": "uint128", "name": "liquidity", "type": "uint128"},
            {"indexed": false, "internalType": "int24", "name": "tick", "type": "int24"}],
        "name": "Swap", "type": "event"
    }
]

const tokenAbi = [
    {
        "constant": true,
        "inputs": [],
        "name": "decimals",
        "outputs": [{"internalType": "uint8", "name": "", "type": "uint8"}],
        "payable": false,
        "stateMutability": "view",
        "type": "function"
    }
]

const provider = new ethers.InfuraProvider(null, 'my-infura-key')
// const provider = new ethers.AlchemyProvider(null, 'my-alchemy-key')

const buildPagination = (input, perPage = 1000, max_pools = 6000) => {
    const result = [];
    for (let i = 0; i < Math.min(input, max_pools); i += perPage) {
        result.push(i);
    }
    return result;
}

const sqrtToPrice = (sqrt, decimals0, decimals1, token0IsInput = true) => {
    const numerator = sqrt ** 2
    const denominator = 2 ** 192
    let ratio = numerator / denominator
    const shiftDecimals = Math.pow(10, decimals0 - decimals1)
    ratio = ratio * shiftDecimals
    if(!token0IsInput){
        ratio = 1 / ratio
    }
    return ratio
}

const delay = async (time) => {
    return new Promise(resolve => setTimeout(resolve, time));
}

const PER_PAGE = 1000 // max 1000
const MAX_POOLS = 6000 // max 6000

const main = async () => {
    const axios = require('axios')

    const URL = 'https://api.thegraph.com/subgraphs/name/uniswap/uniswap-v3'

    const factoryQuery = `
    {
      factory(id: "0x1F98431c8aD98523631AE4a59f267346ea31F984" ) {
        poolCount
      }
    }
    `
    const factoryResults = await axios.post(URL, { query: factoryQuery })
    const poolCount = factoryResults.data.data.factory.poolCount
    console.log('poolCount', poolCount)

    let offsets = buildPagination(poolCount, PER_PAGE, MAX_POOLS)
    console.log('offsetsBefore', offsets)

    const requests = offsets.map(async offset => {
        const testQuery = `
            {
                pools(first: ${ PER_PAGE } skip: ${ offset }) {
                    id,
                    liquidity,
                    token0 {
                        id, symbol
                    },
                    token1 {
                        id, symbol
                    }
                }
            }
        `
        const result = await axios.post(URL, { query: testQuery })
        return result.data.data.pools
    })

    const poolDatas = await Promise.all(requests)

    // [[1,2], [3,4]] => [1,2,3,4]
    const poolData = poolDatas.flat()

    await addListeners(poolData)
}

async function addListeners(poolData) {
    for (const data of poolData) {
        try {
            const token0Symbol = data.token0.symbol
            const token1Symbol = data.token1.symbol

            const poolContract = new ethers.Contract(data.id, poolAbi, provider)

            const token0Contract = new ethers.Contract(data.token0.id, tokenAbi, provider)
            const token1Contract = new ethers.Contract(data.token1.id, tokenAbi, provider)

            const token0Decimals = await token0Contract.decimals()
            const token1Decimals = await token1Contract.decimals()

            await poolContract.on('Swap', (sender, recipient, amount0, amount1, sqrtPriceX96) => {
                const priceRatio = sqrtToPrice(sqrtPriceX96.toString(), token0Decimals.toString(), token1Decimals.toString())
                console.log(`Pool: ${token0Symbol}/${token1Symbol} |`, `Price: ${priceRatio.toString()} |`, `From: ${sender}`)
            })
            console.log(`${token0Symbol}/${token1Symbol} added`)
        } catch {
            await delay(5000);
            console.log('failed')
        }
        await delay(100);
    }

    console.log('complete')
}

/*
    node listen
 */


main()

package.json

{
  "name": "listen-all-pools",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@uniswap/v3-core": "^1.0.1",
    "axios": "^1.4.0",
    "ethers": "^6.6.2"
  }
}