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129
basic/14-chainlink-price-feed/scripts/04-HistoryData.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| // We require the Hardhat Runtime Environment explicitly here. This is optional | ||
| // but useful for running the script in a standalone fashion through `node <script>`. | ||
| // | ||
| // You can also run a script with `npx hardhat run <script>`. If you do that, Hardhat | ||
| // will compile your contracts, add the Hardhat Runtime Environment's members to the | ||
| // global scope, and execute the script. | ||
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| const moment = require('moment'); | ||
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| const aggregatorV3InterfaceABI = [ | ||
| { | ||
| inputs: [], | ||
| name: "decimals", | ||
| outputs: [{ internalType: "uint8", name: "", type: "uint8" }], | ||
| stateMutability: "view", | ||
| type: "function", | ||
| }, | ||
| { | ||
| inputs: [], | ||
| name: "description", | ||
| outputs: [{ internalType: "string", name: "", type: "string" }], | ||
| stateMutability: "view", | ||
| type: "function", | ||
| }, | ||
| { | ||
| inputs: [{ internalType: "uint80", name: "_roundId", type: "uint80" }], | ||
| name: "getRoundData", | ||
| outputs: [ | ||
| { internalType: "uint80", name: "roundId", type: "uint80" }, | ||
| { internalType: "int256", name: "answer", type: "int256" }, | ||
| { internalType: "uint256", name: "startedAt", type: "uint256" }, | ||
| { internalType: "uint256", name: "updatedAt", type: "uint256" }, | ||
| { internalType: "uint80", name: "answeredInRound", type: "uint80" }, | ||
| ], | ||
| stateMutability: "view", | ||
| type: "function", | ||
| }, | ||
| { | ||
| inputs: [], | ||
| name: "latestRoundData", | ||
| outputs: [ | ||
| { internalType: "uint80", name: "roundId", type: "uint80" }, | ||
| { internalType: "int256", name: "answer", type: "int256" }, | ||
| { internalType: "uint256", name: "startedAt", type: "uint256" }, | ||
| { internalType: "uint256", name: "updatedAt", type: "uint256" }, | ||
| { internalType: "uint80", name: "answeredInRound", type: "uint80" }, | ||
| ], | ||
| stateMutability: "view", | ||
| type: "function", | ||
| }, | ||
| { | ||
| inputs: [], | ||
| name: "version", | ||
| outputs: [{ internalType: "uint256", name: "", type: "uint256" }], | ||
| stateMutability: "view", | ||
| type: "function", | ||
| }, | ||
| ] | ||
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| async function main() { | ||
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| const { ethers, BigNumber } = require("ethers") // for nodejs only | ||
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| const provider = new ethers.providers.JsonRpcProvider("https://rpc.ankr.com/eth_sepolia") | ||
| //eth_usd: one eth worths how many usd | ||
| const addr = "0x694AA1769357215DE4FAC081bf1f309aDC325306" | ||
| const priceFeed = new ethers.Contract(addr, aggregatorV3InterfaceABI, provider) | ||
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| //1. 获取最新的round | ||
| const latestRound = await priceFeed.latestRoundData(); | ||
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| //see https://docs.chain.link/data-feeds/historical-data | ||
| const mask = BigNumber.from('0xFFFFFFFFFFFFFFFF');//right most 64bits with 1 | ||
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| const latestPhaseId = latestRound.roundId.shr(64); | ||
| const latestAggregatorRoundId = latestRound.roundId.and(mask); | ||
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| console.log('latesPhaseId '+latestPhaseId.toString()) | ||
| console.log('latestAggregatorRoundId '+latestAggregatorRoundId.toString()) | ||
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| for (var phase = BigNumber.from(1);phase.lte(latestPhaseId);phase=phase.add(1)){ | ||
| for (var agRound = BigNumber.from(1); agRound.lte(mask) ; agRound=agRound.add(1)){ | ||
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| const [inPhase, roundData] = await downloadRoundData(priceFeed, phase, agRound); | ||
| if (!inPhase){ | ||
| console.log('should start a new phase') | ||
| break; | ||
| } | ||
| processRoundData(phase, agRound, roundData) | ||
| await new Promise(r => setTimeout(r, 1000)); | ||
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| } | ||
| } | ||
| } | ||
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| async function downloadRoundData(priceFeed, phase, agRound){ | ||
| const roundId = phase.shl(64).or(agRound); | ||
| const maxRetries = 10 | ||
| var tries = 1; | ||
| while (tries <= maxRetries){ | ||
| try{ | ||
| const roundData = await priceFeed.getRoundData(roundId); | ||
| return [true, roundData] //still same phase, rounddata | ||
| } | ||
| catch(e){ | ||
| if(e.message.includes('Transaction reverted')){ | ||
| return [false, undefined]//out of the current phase, should start new one | ||
| } else{ | ||
| console.log(e.message) | ||
| tries++;//just retry, may be network connection issues | ||
| await new Promise(r => setTimeout(r, 1000)); | ||
| } | ||
| } | ||
| } | ||
| throw Error('Totally failed. dont know why'); | ||
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| } | ||
| function processRoundData(phase, agRound, roundData){ | ||
| //Todo:insert it into database | ||
| //目前只是打印 | ||
| console.log(`phase:${phase}, agRound:${agRound}`); | ||
| console.log(`answer:${ethers.utils.formatUnits(roundData.answer, 8)}`); | ||
| console.log(`updatedAt:${moment(roundData.updatedAt*1000).format('YYYY-MM-DD HH:mm:ss')}`); | ||
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| } | ||
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| main() |
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