41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
const Web3 = require('web3')
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const { Mutex } = require('async-mutex')
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const { GasPriceOracle } = require('gas-price-oracle')
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const Transaction = require('./Transaction')
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const defaultConfig = {
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MAX_RETRIES: 10,
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GAS_BUMP_PERCENTAGE: 5,
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MIN_GWEI_BUMP: 1,
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GAS_BUMP_INTERVAL: 1000 * 60 * 5,
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MAX_GAS_PRICE: 1000,
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POLL_INTERVAL: 5000,
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CONFIRMATIONS: 8,
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}
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class TxManager {
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constructor({ privateKey, rpcUrl, broadcastNodes = [], config = {} }) {
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this.config = Object.assign({ ...defaultConfig }, config)
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this._privateKey = '0x' + privateKey
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this._web3 = new Web3(rpcUrl)
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this._broadcastNodes = broadcastNodes
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this.address = this._web3.eth.accounts.privateKeyToAccount(this._privateKey).address
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this._web3.eth.accounts.wallet.add(this._privateKey)
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this._web3.eth.defaultAccount = this.address
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this._gasPriceOracle = new GasPriceOracle({ defaultRpc: rpcUrl })
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this._mutex = new Mutex()
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this._nonce = null
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}
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/**
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* Creates Transaction class instance.
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*
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* @param tx Transaction to send
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*/
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createTx(tx) {
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return new Transaction(tx, this)
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}
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}
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module.exports = TxManager
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