如何通过Hardhat在RSK上部署两个智能合约

Question

我正在开发两个智能合约，它们的部署顺序很重要。首先是一个ERC20令牌，然后将其部署地址传递给ERC721智能合约的构造函数。两个联系人的互动已在Hardhat上成功测试。然而，在学习Hardhat教程时，我试图使用以下脚本将这些智能合约部署到RSK regtest本地节点：​

const totalSuply = 1e6;
​
async function main() {

const ERC20 = await ethers.getContractFactory('ERC20');
const erc20 = await ERC20.deploy(totalSuply);
​
const ERC721 = await ethers.getContractFactory('ERC721');
const erc721 = await ERC721.deploy(erc20.address);

}
​
main()
.then(() => process.exit(0))
.catch((error) => {
console.error(error);
process.exit(1);
});

​我收到以下错误：

Error: 
transaction failed 
[ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ](transactionHash="0xac83bdd94bf43eaec2e930497aa9a637883ad870749e5ee14cf8ba4ff332a810",
transaction {
"hash":"0xac83bdd94bf43eaec2e930497aa9a637883ad870749e5ee14cf8ba4ff332a810",
"type":0,
"accessList":null,
"blockHash":null,
"blockNumber":null,
"transactionIndex":null,
"confirmations":0,
"from":"0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826",
"gasPrice":{"type":"BigNumber","hex":"0x00"},
"gasLimit":{"type":"BigNumber","hex":"0x1204a5"},
"to":null,"value":{"type":"BigNumber","hex":"0x00"},
"nonce":736,"data":...
​

​根据指定的链接，最有可能的原因是：

如果您未能等到部署合约，则可能会发生这种情况。

既然我已经在await-等待部署，这怎么可能呢？有人在通过Hardhat在RSK上部署智能合约时遇到过类似的问题吗？

作为参考，这是我正在使用的hardhat.config.js文件：​

require('@nomiclabs/hardhat-waffle');
​
module.exports = {
solidity: '0.8.1',
defaultNetwork: 'rskregtest',
networks: {
hardhat: {},
rskregtest: {
url: 'http://localhost:4444',
},
},
};

Answer 1

问题是您没有等待部署完成。根据Hardhat文档，您应该按照以下部署智能合约

const greeter = await Greeter.deploy("Hello, Hardhat!");
await greeter.deployed();

具体地说，.deploy()后面必须跟.deployed()，并且需要同时跟await。修改您的部署脚本如下所示：

const totalSuply = 1e6;
async function main() {

const ERC20 = await ethers.getContractFactory('ERC20');
const erc20 = await ERC20.deploy(totalSuply);
await erc20.deployed(); // here
const ERC721 = await ethers.getContractFactory('ERC721');
const erc721 = await ERC721.deploy(erc20.address);
await erc721.deployed(); // and here

}
main()
.then(() => process.exit(0))
.catch((error) => {
console.error(error);
process.exit(1);
});