truffle-hdwallet-provider-klaytn

Forked [email protected] and applied patches for Klaytn network. It's primary usage is deploying contracts and interacting with them in Klaytn network when using Truffle framework.

Install

$ npm install truffle-hdwallet-provider-klaytn

Requirements

Node >= 7.6
Web3 1.0.0-beta.37

General Usage

You can use this provider wherever a Web3 provider is needed, not just in Truffle. For Truffle-specific usage, see next section.

const HDWalletProvider = require("truffle-hdwallet-provider-klaytn");
const Web3 = require("web3");
const mnemonic = "mountains supernatural bird..."; // 12 word mnemonic
let provider = new HDWalletProvider(mnemonic, "http://localhost:8545");

// Or, alternatively pass in a zero-based address index.
provider = new HDWalletProvider(mnemonic, "http://localhost:8545", 5);

// Or, use your own hierarchical derivation path
provider = new HDWalletProvider(mnemonic, "http://localhost:8545", 5, 1, true, "m/44'/137'/0'/0/");


// HDWalletProvider is compatible with Web3. Use it at Web3 constructor, just like any other Web3 Provider
const web3 = new Web3(provider);

// Or, if web3 is alreay initialized, you can call the 'setProvider' on web3, web3.eth, web3.shh and/or web3.bzz
web3.setProvider(provider)

// ...
// Write your code here.
// ...

// At termination, `provider.engine.stop()' should be called to finish the process elegantly.
provider.engine.stop();

By default, the HDWalletProvider will use the address of the first address that's generated from the mnemonic. If you pass in a specific index, it'll use that address instead.

Parameters:

Parameter	Type	Default	Required	Description
`mnemonic`	`string`	null	[x]	12 word mnemonic which addresses are created from.
`provider`	`string\|object`	`null`	[x]	URI or Ethereum client to send all other non-transaction-related Web3 requests
`address_index`	`number`	`0`	[ ]	If specified, will tell the provider to manage the address at the index specified
`num_addresses`	`number`	`1`	[ ]	If specified, will create `number` addresses when instantiated
`shareNonce`	`boolean`	`true`	[ ]	If false, a new WalletProvider will track its own nonce-state
`wallet_hdpath`	`string`	`"m/44'/60'/0'/0/"`	[ ]	If specified, will tell the wallet engine what derivation path should use to derive addresses.

Private Keys

Instead of a mnemonic, you can alternatively provide a private key or array of private keys as the first parameter. When providing an array, address_index and num_addresses are fully supported.

const HDWalletProvider = require("truffle-hdwallet-provider-klaytn");
//load single private key as string
let provider = new HDWalletProvider("3f841bf589fdf83a521e55d51afddc34fa65351161eead24f064855fc29c9580", "http://localhost:8545");

// Or, pass an array of private keys, and optionally use a certain subset of addresses
const privateKeys = [
  "3f841bf589fdf83a521e55d51afddc34fa65351161eead24f064855fc29c9580",
  "9549f39decea7b7504e15572b2c6a72766df0281cea22bd1a3bc87166b1ca290",
];
provider = new HDWalletProvider(privateKeys, "http://localhost:8545", 0, 2); //start at address_index 0 and load both addresses

NOTE: This is just an example. NEVER hard code production/mainnet private keys in your code or commit them to git. They should always be loaded from environment variables or a secure secret management system.

Truffle Usage

You can easily use this within a Truffle configuration. For instance:

truffle-config.js

const HDWalletProvider = require("truffle-hdwallet-provider-klaytn");

const mnemonic = "mountains supernatural bird ...";

module.exports = {
  networks: {
    development: {
      host: "localhost",
      port: 8545,
      network_id: "*" // Match any network id
    },
    testnet: {
      provider: () => new HDWalletProvider(mnemonic, "https://api.baobab.klaytn.net:8651"),
      network_id: '1001', //Klaytn baobab testnet's network id
      gas: '8500000',
      gasPrice: null
    },
    mainnet: {
      provider: () => new HDWalletProvider(mnemonic, "https://api.cypress.klaytn.net:8651"),
      network_id: '8217', //Klaytn mainnet's network id
      gas: '8500000',
      gasPrice: null
    }
  }
};

hyochan-brown / truffle-hdwallet-provider-klaytn Goto Github PK