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SendTransactionMethod.js
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SendTransactionMethod.js
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/*
This file is part of web3.js.
web3.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
web3.js is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with web3.js. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file SendTransactionMethod.js
* @author Samuel Furter <samuel@ethereum.org>
* @date 2018
*/
import isObject from 'lodash/isObject';
import AbstractSendMethod from '../../../lib/methods/AbstractSendMethod';
export default class SendTransactionMethod extends AbstractSendMethod {
/**
* @param {Utils} utils
* @param {Object} formatters
* @param {TransactionConfirmationWorkflow} transactionConfirmationWorkflow
* @param {Accounts} accounts
* @param {TransactionSigner} transactionSigner
*
* @constructor
*/
constructor(utils, formatters, transactionConfirmationWorkflow, accounts, transactionSigner) {
super('eth_sendTransaction', 1, utils, formatters, transactionConfirmationWorkflow);
this.accounts = accounts;
this.transactionSigner = transactionSigner;
}
/**
* This method will be executed before the RPC request.
*
* @method beforeExecution
*
* @param {AbstractWeb3Module} moduleInstance - The package where the method is called from for example Eth.
*/
beforeExecution(moduleInstance) {
this.parameters[0] = this.formatters.inputTransactionFormatter(this.parameters[0], moduleInstance);
}
/**
* Checks if gasPrice is set, sends the request and returns a PromiEvent Object
*
* @method execute
*
* @param {AbstractWeb3Module} moduleInstance
* @param {PromiEvent} promiEvent
*
* @callback callback callback(error, result)
* @returns {PromiEvent}
*/
execute(moduleInstance, promiEvent) {
if (!this.isGasLimitDefined()) {
if (this.hasDefaultGasLimit(moduleInstance)) {
this.parameters[0]['gas'] = moduleInstance.defaultGas;
}
}
if (!this.isGasPriceDefined() && this.hasDefaultGasPrice(moduleInstance)) {
this.parameters[0]['gasPrice'] = moduleInstance.defaultGasPrice;
}
if (!this.isGasPriceDefined() && !this.hasDefaultGasPrice(moduleInstance)) {
moduleInstance.currentProvider.send('eth_gasPrice', []).then((gasPrice) => {
this.parameters[0]['gasPrice'] = gasPrice;
this.execute(moduleInstance, promiEvent);
});
return promiEvent;
}
if (this.hasWallets()) {
this.rpcMethod = 'eth_sendRawTransaction';
this.transactionSigner
.sign(this.parameters[0])
.then((response) => {
this.parameters = [response.rawTransaction];
super.execute(moduleInstance, promiEvent);
})
.catch((error) => {
if (this.callback) {
this.callback(error, null);
}
promiEvent.reject(error);
promiEvent.emit('error', error);
promiEvent.removeAllListeners();
});
return promiEvent;
}
super.execute(moduleInstance, promiEvent);
return promiEvent;
}
/**
* Checks if the given Web3Module has an default gasPrice defined
*
* @method hasDefaultGasPrice
*
* @param {AbstractWeb3Module} moduleInstance
*
* @returns {Boolean}
*/
hasDefaultGasPrice(moduleInstance) {
return moduleInstance.defaultGasPrice !== null && typeof moduleInstance.defaultGasPrice !== 'undefined';
}
/**
* Checks if gasPrice is defined in the method options
*
* @method isGasPriceDefined
*
* @returns {Boolean}
*/
isGasPriceDefined() {
return isObject(this.parameters[0]) && typeof this.parameters[0].gasPrice !== 'undefined';
}
/**
* Checks if the given Web3Module has an default gas limit defined
*
* @method hasDefaultGasLimit
*
* @param {AbstractWeb3Module} moduleInstance
*
* @returns {Boolean}
*/
hasDefaultGasLimit(moduleInstance) {
return moduleInstance.defaultGas !== null && typeof moduleInstance.defaultGas !== 'undefined';
}
/**
* Checks if a gas limit is defined
*
* @method isGasLimitDefined
*
* @returns {Boolean}
*/
isGasLimitDefined() {
return isObject(this.parameters[0]) && typeof this.parameters[0].gas !== 'undefined';
}
}