菩提发布最新版Qtum开发工具：Qweb3

Posted 2021-04-25 菩提预测市场

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为了提高 Qtum 区块链的开发能力，菩提刚刚为Qtum dApp开发者发布了最新版的开发工具－－Qweb3 0.6.0。Qweb3是一个围绕Qtum CLI接口的javascript包装的开发工具。您可以在这里找到菩提开发的最新版本：

https://github.com/bodhiproject/qweb3.js

菩提发布最新版Qtum开发工具：Qweb3

它可以做什么？

Qweb3.js是一个围绕qtum-cli的Javascript包装器，它可以使开发人员可以更轻松地创建cli命令，而无需执行Qtum命令行所需的所有转换和填充。

举一个例子，智能合约功能：

function createTopic(

address _oracle,

bytes32[10] _name,

bytes32[10] _resultNames,

uint256 _bettingStartBlock,

uint256 _bettingEndBlock,

uint256 _resultSettingStartBlock,

uint256 _resultSettingEndBlock)

public

returns (TopicEvent topicEvent) { }

用qtum-cli来做一个sendtocontract函数，看起来像这样：

$ ./qtum-cli sendtocontract 73f9bcccc2f4e9fc93c06b434a11d83f4a043e9e 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 0 4000000 0.0000004 qKjn4fStBaAtwGiwueJf9qFxgpbAvf1xAy

这似乎没有规律，非常难以使用。所以我们创建了一个与本地Qtum节点交互的简单方法。这里是Qweb3中的上述调用的等价物：

const oracleAddress = ‘qKjn4fStBaAtwGiwueJf9qFxgpbAvf1xAy’;

const eventName = ‘My event name’;

const resultNames = [‘Yes’, ’No’];

const bettingStartBlock = 68000;

const bettingEndBlock = 68100;

const resultSettingStartBlock = 68200;

const resultSettingEndBlock = 68300;

return await contract.send(‘createTopic’, {

methodArgs: [oracleAddress, eventName, resultNames, bettingStartBlock, bettingEndBlock, resultSettingStartBlock, resultSettingEndBlock],

gasLimit: 4000000,

senderAddress: ‘ qKjn4fStBaAtwGiwueJf9qFxgpbAvf1xAy’,

});

Qweb3使构建和执行这些qtum-cli命令更容易，但使用Javascript。

如何安装？

使用NPM，运行以下命令来将qweb3.js模块拖放到您的项目中：

$ npm install qweb3 --save

如何使用？

你必须启动你的qtumd本地节点，并在启动你的qtumd实例时指定rpcuser和rpcpassword。

// you can use whatever rpcuser and rpcpassword you choose

$ ./qtumd -testnet -logevents -rpcuser=bodhi -rpcpassword=bodhi

一旦你的项目中有了NPM模块，你可以像下面这样实例化一个新的Qweb3实例：

const Qweb3 = require('qweb3').default;

// Pass in the path of your local Qtum node rpc port with username/password

// In our case, username=bodhi, password=bodhi, port=13889 (default port)

const qClient = new Qweb3('http://bodhi:bodhi@localhost:13889');

一旦你有你的Qweb3实例，并且你的qtumd正在运行，你可以在Qweb3上调用命令，例如：

async function getBlockCount() {

return await qClient.getBlockCount();

}

getBlockCount();

async function getTransactionReceipt(args) {

const {

transactionId, // string

} = args;

return await qClient.getTransactionReceipt(transactionId);

}

getTransactionReceipt('1d498254fd672d6e8deaff9b92b95bcd9ab6a9591ff415b9f0b3be442fcc9392');

完整的命令列表可以在我们的Github repo自述文件中找到：

https://github.com/bodhiproject/qweb3.js

或者，如果您想要执行直接合同调用（如callcontract或sendtocontract），则需要实例化一个contract实例：

const Contract = require('qweb3').Contract;

// The path to your local Qtum node via RPC

const rpcAddress = 'http://bodhi:bodhi@localhost:13889';

// contractAddress = The address of your contract deployed on the blockchain

const contractAddress = 'f7b958eac2bdaca0f225b86d162f263441d23c19';

// contractAbi = The ABI of the contract

const contractAbi = [{ constant: true, inputs: [{ name: '', type: 'bytes32' }], name: 'topics', outputs: [{ name: '', type: 'address' }], payable: false, stateMutability: 'view', type: 'function' }, { constant: false, inputs: [{ name: '_oracle', type: 'address' }, { name: '_name', type: 'bytes32[10]' }, { name: '_resultNames', type: 'bytes32[10]' }, { name: '_bettingEndBlock', type: 'uint256' }, { name: '_resultSettingEndBlock', type: 'uint256' }], name: 'createTopic', outputs: [{ name: 'topicEvent', type: 'address' }], payable: false, stateMutability: 'nonpayable', type: 'function' }, { constant: true, inputs: [{ name: '_name', type: 'bytes32[10]' }, { name: '_resultNames', type: 'bytes32[10]' }, { name: '_bettingEndBlock', type: 'uint256' }, { name: '_resultSettingEndBlock', type: 'uint256' }], name: 'doesTopicExist', outputs: [{ name: '', type: 'bool' }], payable: false, stateMutability: 'view', type: 'function' }, { inputs: [{ name: '_addressManager', type: 'address' }], payable: false, stateMutability: 'nonpayable', type: 'constructor' }, { anonymous: false, inputs: [{ indexed: true, name: '_topicAddress', type: 'address' }, { indexed: true, name: '_creator', type: 'address' }, { indexed: true, name: '_oracle', type: 'address' }, { indexed: false, name: '_name', type: 'bytes32[10]' }, { indexed: false, name: '_resultNames', type: 'bytes32[10]' }, { indexed: false, name: '_bettingEndBlock', type: 'uint256' }, { indexed: false, name: '_resultSettingEndBlock', type: 'uint256' }], name: 'TopicCreated', type: 'event' }];

const contract = new Contract(rpcAddress, contractAddress, contractAbi);

这是一个callcontract例子：

// callcontract on a method named 'myCallFunc'

async function exampleCall(args) {

const {

senderAddress, // address

} = args;

return await contract.call('myCallFunc', {

methodArgs: [],

senderAddress: senderAddress,

});

}

exampleCall('qKjn4fStBaAtwGiwueJf9qFxgpbAvf1xAy');

这是一个 sendtocontract例子：

// sendtocontract on a method named 'mySendFunc'

async function exampleSend(args) {

const {

resultIndex, // number

senderAddress, // address

} = args;

return await contract.send('mySendFunc', {

methodArgs: [resultIndex], // match contract function params

gasLimit: 1000000, // setting the gas limit to 1 million

senderAddress: senderAddress,

});

}

exampleSend(1, 'qKjn4fStBaAtwGiwueJf9qFxgpbAvf1xAy');

新指令

我们最近用新的指令更新了所有的开发需求：

getBlock

getBlockchainInfo

getBlockHash

listContracts

getInfo

dumpPrivateKey

encryptWallet

getNewAddress

getUnconfirmedBalance

importAddress

importPrivateKey

importPublicKey

listLockUnspent

sendToAddress

setTxFee

ES6语法

我们使用ES6语法重构了我们所有的模块导出部分，而不是Babel语法。我们觉得没有必要为了我们的工具的目的而使用Babel。

以前，要导入Qweb3，你可以这样做：

const Qweb3 = require('qweb3').default;

const Contract = require('qweb3').Contract;

现在，你可以这样做：

const { Qweb3, Contract } = require('qweb3');

// OR

const Qweb3 =require('qweb3').Qweb3;

const Contract =require('qweb3').Contract;

我们希望我们的工具对开发者们有所帮助。我们计划的即将发布的功能之一是一个完整的命令行界面，可以用于即时进行转换。敬请关注！

如果你有任何意见，建议或功能要求，可以在以下的Github repo中创建一个issue。谢谢！

https://github.com/bodhiproject/qweb3.js

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菩提发布最新版Qtum开发工具：Qweb3