智能合约部署

TxTypeSmartContractDeploy 向给定地址部署智能合约。 该交易类型将进行以下更改。

导入 web3 和 @kaiachain/web3js-ext 软件包，在 web3 上添加 kaia 功能

定义发送方、付费方地址和私人密钥

使用指定的 kairos 测试网 URL 设置提供程序。 web3 中的提供者是访问区块链数据的只读抽象。

此外，您还可以将提供商 URL 从 kairos 更改为 quicknode

使用 "web3.eth.accounts.privateKeyToAccount "创建带有私钥的发件人钱包

使用 "web3.eth.accounts.privateKeyToAccount "用私钥创建付费者钱包

定义交易对象

设置 `type：TxType.FeeDelegatedSmartContractDeploy"，用于与付费方部署新合约的交易

设置 data："0x60806040... 是编译 solidity 源代码的字节码

设置其他所需参数，如 发件人地址、人工可读、代码格式

使用 signTransaction 在发送方账户上签署交易

使用 "signTransactionAsFeePayer "以付费方账户签署交易

将交易发送到区块链。 它将返回交易收据

FeeDelegatedSmartContractDeployExample.js

const { Web3, TxType } = require("@kaiachain/web3js-ext");

const senderAddr = "0xa2a8854b1802d8cd5de631e690817c253d6a9153";

const senderPriv = "0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8";

const feePayerAddr = "0xcb0eb737dfda52756495a5e08a9b37aab3b271da";

const feePayerPriv = "0x9435261ed483b6efa3886d6ad9f64c12078a0e28d8d80715c773e16fc000cff4";

const provider = new Web3.providers.HttpProvider("https://public-en-kairos.node.kaia.io");

const web3 = new Web3(provider);

const senderAccount = web3.eth.accounts.privateKeyToAccount(senderPriv);

const feePayerAccount = web3.eth.accounts.privateKeyToAccount(feePayerPriv);

async function main() {

const tx = {

type: TxType.FeeDelegatedSmartContractDeploy,

from: senderAddr,

data: "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",

humanReadable: false, // must be false

codeFormat: 0, // must be 0

};

// Sign transaction by sender

const signResult1 = await senderAccount.signTransaction(tx);

console.log("senderTxHashRLP", signResult1.rawTransaction);

// Sign and send transaction by fee payer

const signResult2 = await feePayerAccount.signTransactionAsFeePayer(signResult1.rawTransaction);

console.log("signedTx", signResult2.transactionHash);

const receipt = await web3.eth.sendSignedTransaction(signResult2.rawTransaction);

console.log("receipt", receipt);

}

main();

output

❯ node FeeDelegatedSmartContractDeployExample.js

senderTxHashRLP 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

signedTx 0x57cf3bfddf3e72effc39e80b9cb6995273822e51d50f55da93a14574b5dae9d1

receipt {

blockHash: '0x84f6aefd1ee6425e03cd8571fbfb653cf5971c729e7b3864456bb36bfd212622',

blockNumber: 148744885n,

contractAddress: '0x661c557c1b7c2b1fbd6c4793d210cd1e421064e9',

cumulativeGasUsed: 333958n,

effectiveGasPrice: 25000000000n,

from: '0xa2a8854b1802d8cd5de631e690817c253d6a9153',

gasUsed: 140317n,

logs: [],

logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',

status: 1n,

transactionHash: '0x57cf3bfddf3e72effc39e80b9cb6995273822e51d50f55da93a14574b5dae9d1',

transactionIndex: 1n,

type: 0n

}