one/scripts/monitors/price-monitor.js

const OneTask = require('../../libs/one-task')
const OneInch = require('../../libs/web3/1inch')
const BinanceSpot = require('../../libs/binance/binance-spot')
const Config = require('../../config/config')
const NumKit = require('../../kit/num-kit')
const TableKit = require('../../kit/table-kit')
const PriceMonitorConfig = require('./config/price-monitor-config')

const table = new TableKit(['pair', '1inch', 'binance', 'diff', 'percentage'])

const showPrices = function(context, task) {
  const logger = task.logger
  const fileLogger = task.fileLogger
  const tokenMap = context.tokenMap

  table.printTitles()

  Object.keys(tokenMap).forEach((tokenHash) => {
    const token = tokenMap[tokenHash]
    const pair = token.exchange.pair
    const OneInchPrice = token.OneInchPrice
    const BinancePrice = token.BinancePrice
    const PrevOneInchPrice = token.PrevOneInchPrice
    const PrevBinancePrice = token.PrevBinancePrice
    const DiffPrice = token.DiffPrice
    const percentage = NumKit.getSubFloat((DiffPrice / OneInchPrice) * 100, 2)

    // 价格非法的就不输出了
    if ((() => {
      return !OneInchPrice || !BinancePrice || PrevOneInchPrice === OneInchPrice || PrevBinancePrice === BinancePrice
    })()) return

    const rows = [pair.toString(), OneInchPrice.toString(), BinancePrice.toString(), DiffPrice.toString(), percentage.toString()]

    // 需要输出到文件的打印逻辑
    const isLogToFile = (() => {
      return percentage > PriceMonitorConfig.percentageLimit
    })()
    table.showLine(rows, isLogToFile ? fileLogger : undefined)
  })
  table.printEndLine(logger)
}

const onTickFun = async function() {
  const task = this
  const context = task.context
  const tokenMap = context.tokenMap
  const tokenContractAddressList = Object.keys(tokenMap)

  // 搜集所有价格数据
  for (const tokenHash of tokenContractAddressList) {
    const toToken = tokenMap[tokenHash]
    const priceTick = toToken.exchange.priceTick
    const fromIerc20Token = Config.baseIerc20Token
    const amount = Config.baseTokenAmount

    const OneInchPrice = NumKit.getSubFloat(await OneInch.price(fromIerc20Token.contract, tokenHash, amount), priceTick)
    const BinancePrice = NumKit.getSubFloat(await BinanceSpot.realPrice(toToken.exchange.pair), priceTick)

    toToken.OneInchPrice = OneInchPrice
    toToken.BinancePrice = BinancePrice
    toToken.DiffPrice = BinancePrice - OneInchPrice

    if ((() => {
      return Math.abs(toToken.DiffPrice) < Math.pow(10, -priceTick)
    })()) {
      toToken.DiffPrice = 0
    } {
      toToken.DiffPrice = NumKit.getSubFloat(toToken.DiffPrice, priceTick)
    }
  }

  // 绘制帧
  showPrices(context, task)

  // 赋予prev价格值
  Object.keys(tokenMap).forEach((tokenHash) => {
    const token = tokenMap[tokenHash]

    token.PrevOneInchPrice = token.OneInchPrice
    token.PrevBinancePrice = token.BinancePrice
  })
}

const priceMonitor = new OneTask('PriceMonitor',5 * 1000, OneTask.baseInit, onTickFun)

priceMonitor.Start()