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Merge pull request #1212 from cheng521521/main
fix: upgrade etherjs and hardhat to latest version
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,5 @@ | ||
| PRIVATE_KEY=xxxxxxxxxxxxxxxx | ||
| INFURA_ID=yyyyyyyy | ||
| SubscriptionId=ddddd | ||
| PRIVATE_KEY=xxxx | ||
| PUBLIC_ADDRESS=xxxx | ||
| MNEMONIC=xxxx | ||
| API_KEY=xxxx | ||
| SubscriptionId=xxxx |
47 changes: 16 additions & 31 deletions
47
basic/14-chainlink-price-feed/contracts/PriceConsumerV3.sol
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,48 +1,33 @@ | ||
| // SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.7; | ||
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| import {AggregatorV3Interface} from '@chainlink/contracts/src/v0.8/shared/interfaces/AggregatorV3Interface.sol'; | ||
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| /** | ||
| * THIS IS AN EXAMPLE CONTRACT THAT USES HARDCODED | ||
| * VALUES FOR CLARITY. | ||
| * THIS IS AN EXAMPLE CONTRACT THAT USES UN-AUDITED CODE. | ||
| * DO NOT USE THIS CODE IN PRODUCTION. | ||
| */ | ||
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| /** | ||
| * If you are reading data feeds on L2 networks, you must | ||
| * check the latest answer from the L2 Sequencer Uptime | ||
| * Feed to ensure that the data is accurate in the event | ||
| * of an L2 sequencer outage. See the | ||
| * https://docs.chain.link/data-feeds/l2-sequencer-feeds | ||
| * page for details. | ||
| */ | ||
| import {AggregatorV3Interface} from "@chainlink/contracts/src/v0.8/shared/interfaces/AggregatorV3Interface.sol"; | ||
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| contract PriceConsumerV3 { | ||
| AggregatorV3Interface internal dataFeed; | ||
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| AggregatorV3Interface internal priceFeed; | ||
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| /** | ||
| * Network: Sepolia | ||
| * Aggregator: BTC/USD | ||
| * Address: 0x1b44F3514812d835EB1BDB0acB33d3fA3351Ee43 | ||
| * Aggregator: ETH/USD | ||
| * Address: 0x694AA1769357215DE4FAC081bf1f309aDC325306 | ||
| */ | ||
| constructor(address _priceFeed) { | ||
| dataFeed = AggregatorV3Interface(_priceFeed); | ||
| priceFeed = AggregatorV3Interface(_priceFeed); | ||
| } | ||
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| /** | ||
| * Returns the latest answer. | ||
| * Returns the latest price | ||
| */ | ||
| function getChainlinkDataFeedLatestAnswer() public view returns (int) { | ||
| // prettier-ignore | ||
| function getLatestPrice() public view returns (int) { | ||
| ( | ||
| /* uint80 roundID */, | ||
| int answer, | ||
| /*uint startedAt*/, | ||
| /*uint timeStamp*/, | ||
| /*uint80 answeredInRound*/ | ||
| ) = dataFeed.latestRoundData(); | ||
| return answer; | ||
| uint80 roundID, | ||
| int price, | ||
| uint startedAt, | ||
| uint timeStamp, | ||
| uint80 answeredInRound | ||
| ) = priceFeed.latestRoundData(); | ||
| return price; | ||
| } | ||
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| } |
2 changes: 1 addition & 1 deletion
2
basic/14-chainlink-price-feed/contracts/RandomNumberConsumer.sol
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47 changes: 22 additions & 25 deletions
47
basic/14-chainlink-price-feed/scripts/01-PriceConsumerV3Deploy.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,40 +1,37 @@ | ||
| const hre = require("hardhat"); | ||
| require("@nomiclabs/hardhat-web3"); | ||
| const ethers = hre.ethers; | ||
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| async function main () { | ||
| async function main() { | ||
| const singer = await ethers.getSigner(process.env.PUBLIC_ADDRESS); | ||
| console.log("Deploying contracts with the account:", singer.address); | ||
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| const [deployer] = await ethers.getSigners(); | ||
| // PRICE_FEED_CONTRACT 在 sepolia 上的合约地址 | ||
| const PRICE_FEED_CONTRACT = "0x694AA1769357215DE4FAC081bf1f309aDC325306"; | ||
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| console.log( | ||
| "Deploying contracts with the account:", | ||
| deployer.address | ||
| ); | ||
| // deploy PriceConsumerV3 Contract | ||
| const PriceConsumerV3 = await ethers.getContractFactory("PriceConsumerV3"); | ||
| const PriceConsumerV3Ins = await PriceConsumerV3.deploy(PRICE_FEED_CONTRACT); | ||
| await PriceConsumerV3Ins.waitForDeployment(); | ||
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| // PRICE_FEED_CONTRACT 在 sepolia 上的合约地址 | ||
| const PRICE_FEED_CONTRACT = "0x694AA1769357215DE4FAC081bf1f309aDC325306"; | ||
| console.log("----------------------------------------------------"); | ||
| console.log("PriceConsumerV3 address:", await PriceConsumerV3Ins.getAddress()); | ||
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| // 部署 PriceConsumerV3 合约 | ||
| const priceConsumerV3 = await ethers.getContractFactory("PriceConsumerV3"); | ||
| const PriceConsumerV3Ins = await priceConsumerV3.deploy(PRICE_FEED_CONTRACT); | ||
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| console.log("----------------------------------------------------") | ||
| console.log("PriceConsumerV3 address:", PriceConsumerV3Ins.address); | ||
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| //await priceConsumerV3.deployed() | ||
| console.log("Read Price from PRICE_FEED") | ||
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| await PriceConsumerV3Ins.getChainlinkDataFeedLatestAnswer().then(function (data) { | ||
| console.log('data', data) | ||
| console.log('Current price of ETH / USD is: ', web3.utils.hexToNumber(data._hex)) | ||
| }) | ||
| // 读取价格 | ||
| console.log("Read Price from PRICE_FEED"); | ||
| const latestPrice = await PriceConsumerV3Ins.getLatestPrice(); | ||
| console.log('Current price of ETH / USD is: ', latestPrice.toString()); | ||
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| // 使用 singer 获取合约 | ||
| const contract = await ethers.getContractAt("PriceConsumerV3", await PriceConsumerV3Ins.getAddress(), singer); | ||
| const latestPriceFromContract = await contract.getLatestPrice(); | ||
| console.log('Current price of ETH / USD from contract is: ', latestPriceFromContract.toString()); | ||
| } | ||
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| // We recommend this pattern to be able to use async/await everywhere | ||
| // and properly handle errors. | ||
| main() | ||
| .then(() => process.exit(0)) | ||
| .catch(error => { | ||
| console.error(error); | ||
| process.exit(1); | ||
| console.error(error); | ||
| process.exit(1); | ||
| }); |
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