blockchain-javascript/scripts/maintenance/index.js

const ChainLib = require("../lib/chain-lib");
const Web3Utils = require("../../utils/web3-utils");
const logger = require("../../utils/logger");
const Time = require("../../utils/time");
const LpLib = require("../lib/lp-lib");

class LpMaintenance {
  constructor(web3, chain) {
    this.web3 = web3
    this.chain = chain

    // 初始化依赖库
    this.lpLib = new LpLib(this.web3, this.chain)
  }

  async tick() {
    const v2LpList = await this.lpLib.getLpList(LpLib.VERSION.UNIV2)
    const v3LpList = await this.lpLib.getLpList(LpLib.VERSION.UNIV3)

    const lpList = v2LpList.concat(v3LpList)
    // 完善lp信息
    // 1. 更新所有lp的r0,r1
    await this.lpLib.putR0AndR1(lpList)
    // 2. 获取每种交易对的最佳兑换池子（最佳：池子价值最高）
    // 按相同交易对分组的对象，通过token0+token1的字符串串联方式索引
    const maxValueLpMap = this.lpLib.getMaxValueLpMap()
    // 3. 计算token0与token1的相对价格（需要decimals0，decimals1）
    this.lpLib.calcSwapPrice(lpList)
    // 4. 获取池子兑基本币价值
    this.lpLib.calcLpValue(lpList)
  }

  async run() {
    logger.debug(`${this.chain.networkName} liquidity pool maintenance is start.`)
    logger.debug(`web3 is connected, block number: ${await this.web3.eth.getBlockNumber()}.`)

    // 3. 开始处理
    while (true) {
      try {
        await this.tick()
      } catch (e) {
        logger.error(e)
      }

      await Time.delay(1000)
    }
  }
}

async function main() {
  const chain = await ChainLib.getChainFromCommand()
  const web3 = Web3Utils.autoCreate(chain)
  const generator = new LpMaintenance(web3, chain)

  await generator.run()
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
})