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| (function (global, factory) {
Iif (typeof define === "function" && define.amd) {
define(['module'], factory);
} else Eif (typeof exports !== "undefined") {
factory(module);
} else {
var mod = {
exports: {}
};
factory(mod);
global.EthereumContracts = mod.exports;
}
})(this, function (module) {
"use strict";
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
return typeof obj;
} : function (obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj;
};
function _classCallCheck(instance, Constructor) {
Iif (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
var _createClass = function () {
function defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
return function (Constructor, protoProps, staticProps) {
Eif (protoProps) defineProperties(Constructor.prototype, protoProps);
Iif (staticProps) defineProperties(Constructor, staticProps);
return Constructor;
};
}();
var DUMMY_LOGGER = {
debug: function debug() {},
info: function info() {},
warn: function warn() {},
error: function error() {}
};
/**
* Factory for creating new contracts.
*/
var ContractFactory = function () {
/**
* Constuct a new instance.
*
* @param {Object} config Configuration.
* @param {Object} config.web3 A `Web3` instance.
* @param {Object} config.account Account to send transactions from.
* @param {String} config.account.address Address of account.
* @param {String} config.account.password Password for account.
* @param {Number} config.gas Gas amount to use for calls.
*/
function ContractFactory(config) {
_classCallCheck(this, ContractFactory);
this._config = config;
this._web3 = config.web3;
this._account = config.account;
this._gas = config.gas;
}
/**
* Make a wrapper for the given contract.
*
* @param {Object} config Configuration.
* @param {Object} config.contract Contract data, usually the output of `solc` compiler.
* @param {String} config.contract.interface Contract ABI interface JSON.
* @param {String} config.contract.bytecode Contract bytecode string.
*/
_createClass(ContractFactory, [{
key: 'make',
value: function make(config) {
return new Contract(Object.assign({}, config, {
gas: this._gas,
web3: this._web3,
account: this._account
}));
}
}]);
return ContractFactory;
}();
var Contract = function () {
/**
* Constuct a new instance.
*
* @param {Object} config Configuration.
* @param {Object} config.web3 A `Web3` instance.
* @param {Object} contract.contract Contract data, usually the output of `solc` compiler.
* @param {String} config.contract.interface Contract ABI interface JSON.
* @param {String} config.contract.bytecode Contract bytecode string.
* @param {Object} config.account Account to send transactions from.
* @param {String} config.account.address Address of account.
* @param {String} config.account.password Password for account.
* @param {Number} config.gas Gas amount to use for calls.
*/
function Contract(config) {
_classCallCheck(this, Contract);
this._config = config;
this._web3 = config.web3;
this._bytecode = config.contract.bytecode;
this._interface = JSON.parse(config.contract.interface);
this._contract = this._web3.eth.contract(this._interface);
this._account = config.account;
this._gas = config.gas;
this._logger = DUMMY_LOGGER;
}
/**
* Get the logger.
* @return {Object}
*/
_createClass(Contract, [{
key: 'deploy',
value: function deploy(args, options) {
var _this = this;
options = Object.assign({
account: this._account,
gas: this._gas
}, options);
this.logger.info('Deploy contract from account ' + options.account.address + '...');
return this._unlockAccount(options.account).then(function () {
var sortedArgs = _this._sanitizeMethodArgs('constructor', args);
_this.logger.debug('Deploy contract ...');
return new Promise(function (resolve, reject) {
_this._contract.new.apply(_this._contract, sortedArgs.concat([{
data: _this._bytecode,
gas: options.gas,
from: options.account.address
}, function (err, newContract) {
if (err) {
_this.logger.error('Contract creation error', err);
return reject(err);
}
if (!newContract.address) {
_this.logger.debug('New contract transaction: ' + newContract.transactionHash);
} else {
_this.logger.info('New contract address: ' + newContract.address);
resolve(new ContractInstance({
contract: _this,
address: newContract.address
}));
}
}]));
});
});
}
}, {
key: '_unlockAccount',
value: function _unlockAccount(account) {
var _this2 = this;
return new Promise(function (resolve, reject) {
_this2._web3.personal.unlockAccount(account.address, account.password, 2000, function (err) {
if (err) {
_this2.logger.info('Error unlocking account ' + account.address + ': ' + err.message);
return reject(err);
}
_this2.logger.info('Unlocked account ' + account.address + ' for 2 seconds.');
resolve();
});
});
}
}, {
key: '_sanitizeMethodArgs',
value: function _sanitizeMethodArgs(method, args) {
var _this3 = this;
args = args || {};
this.logger.debug('Sanitize ' + Object.keys(args).length + ' arguments for method: ' + method + ' ...');
var methodAbi = this._getMethodDescriptor(method);
if (!methodAbi) {
// if not constructor found then it's a built-in constructor
if ('constructor' === method) {
this.logger.debug('Built-in constructor, so no default arguments.');
return [];
} else {
throw new Error('Method not found: ' + method);
}
}
return methodAbi.inputs.map(function (input) {
Iif (!args.hasOwnProperty(input.name)) {
throw new Error('Missing argument ' + input.name + ' for method ' + method);
}
try {
return _this3._convertInputArg(args[input.name], input.type);
} catch (err) {
throw new Error('Error converting value for argument ' + input.name + ' of method ' + method + ': ' + err.message);
}
});
}
}, {
key: '_sanitizeMethodReturnValues',
value: function _sanitizeMethodReturnValues(method, value) {
var _this4 = this;
var values = Array.isArray(value) ? value : [value];
this.logger.debug('Sanitize ' + values.length + ' return values from method: ' + method + ' ...');
var methodAbi = this._getMethodDescriptor(method);
Iif (!methodAbi) {
throw new Error('Method not found: ' + method);
}
var ret = methodAbi.outputs.map(function (output) {
try {
return _this4._convertReturnValue(values.shift(), output.type);
} catch (err) {
throw new Error('Error converting return value to type ' + output.name + ' for method ' + method + ': ' + err.message);
}
});
return Array.isArray(value) ? ret : ret[0];
}
}, {
key: '_getMethodDescriptor',
value: function _getMethodDescriptor(method) {
this.logger.debug('Get descriptor for method: ' + method + ' ...');
var interfaceMethod = this._interface.find(function (item) {
return item.name === method || item.type === method;
});
return interfaceMethod || null;
}
}, {
key: '_convertReturnValue',
value: function _convertReturnValue(value, targetType) {
var originalType = typeof value === 'undefined' ? 'undefined' : _typeof(value);
this.logger.debug('Convert return value of type ' + originalType + ' to type ' + targetType + ' ...');
// numbers
if (0 === targetType.indexOf('int') || 0 === targetType.indexOf('uint')) {
value = parseInt(this._web3.fromWei(value, 'wei'), 10);
}
return value;
}
}, {
key: '_convertInputArg',
value: function _convertInputArg(value, targetType) {
var originalType = typeof value === 'undefined' ? 'undefined' : _typeof(value);
this.logger.debug('Convert input value of type ' + originalType + ' to type ' + targetType + ' ...');
// numbers
if (0 === targetType.indexOf('int') || 0 === targetType.indexOf('uint')) {
var suffix = targetType.substr(targetType.indexOf('int') + 3);
Eif (suffix.length) {
suffix = parseInt(suffix, 10);
} else {
suffix = 256; // since int=int256 and uint=uint256
}
var maxValue = void 0,
minValue = void 0;
if (0 === targetType.indexOf('int')) {
minValue = -(Math.pow(2, suffix - 1) - 1);
maxValue = Math.pow(2, suffix - 1) - 1;
} else {
minValue = 0;
maxValue = Math.pow(2, suffix) - 1;
}
value = Number(value);
if (isNaN(value)) {
throw new Error('Value is not a number');
}
if (value < minValue || value > maxValue) {
throw new Error('Value out of bounds (min=' + minValue + ', max=' + maxValue + ')');
}
}
// bool
else if ('bool' === targetType) {
value += '';
value = '' === value || '0' === value || 'false' === value ? false : true;
}
// string
else if ('string' === targetType) {
value = '' + value;
}
// address
else if ('address' === targetType) {
if ('number' === originalType) {
value = ('0000000000000000000000000000000000000000' + value.toString(16)).slice(-40);
value = '0x' + value;
} else {
value = value + '';
}
if (!this._web3.isAddress(value)) {
throw new Error('Value is not a valid address');
}
}
// bytes
else Eif (0 === targetType.indexOf('byte')) {
value = this._web3.toHex(value);
}
return value;
}
}, {
key: 'logger',
get: function get() {
return this._logger;
},
set: function set(val) {
this._logger = {};
for (var key in DUMMY_LOGGER) {
this._logger[key] = val && typeof val[key] === 'function' ? val[key].bind(val) : DUMMY_LOGGER[key];
}
}
}]);
return Contract;
}();
var ContractInstance = function () {
/**
* Construct a new instance.
*
* @param {Object} config Configuration.
* @param {Contract} config.contract The contract instance.
* @param {String} config.address Address on blockchain.
*/
function ContractInstance(config) {
_classCallCheck(this, ContractInstance);
this._config = config;
this._contract = config.contract;
this._web3 = this._contract._web3;
this._address = config.address;
this._inst = this.contract._contract.at(this._address);
/*
Logger is same as parent contract one, except that address is prepended
to all log output.
*/
this._logger = {};
for (var logMethod in DUMMY_LOGGER) {
this._logger[logMethod] = function (logMethod, self) {
return function () {
self.contract.logger[logMethod].apply(self.contract.logger, ['[' + self.address + ']: '].concat(Array.from(arguments)));
};
}(logMethod, this);
}
}
/**
* Get address of this instance.
* @return {String}
*/
_createClass(ContractInstance, [{
key: 'localCall',
value: function localCall(method, args) {
var parentContract = this.contract;
this._logger.info('Local call ' + method + ' ...');
var sortedArgs = parentContract._sanitizeMethodArgs(method, args);
return parentContract._sanitizeMethodReturnValues(method, this._inst[method].call.apply(this._inst[method], sortedArgs));
}
}, {
key: 'sendCall',
value: function sendCall(method, args, options) {
var _this5 = this;
var parentContract = this.contract;
options = Object.assign({
account: parentContract._account,
gas: parentContract._gas
}, options);
this._logger.info('Call method ' + method + ' from account ' + options.account.address + '...');
return parentContract._unlockAccount(options.account).then(function () {
var sortedArgs = parentContract._sanitizeMethodArgs(method, args);
_this5._logger.debug('Execute method ' + method + ' ...');
return new Promise(function (resolve, reject) {
_this5._inst[method].sendTransaction.apply(_this5._inst, sortedArgs.concat([{
data: _this5._bytecode,
gas: options.gas,
from: options.account.address
}, function (err, txHash) {
if (err) {
_this5._logger.error('Method call error', err);
return reject(err);
}
var tx = new Transaction({
parent: _this5,
hash: txHash
});
tx.getReceipt().then(resolve).catch(reject);
}]));
});
});
}
}, {
key: 'address',
get: function get() {
return this._address;
}
}, {
key: 'contract',
get: function get() {
return this._contract;
}
}]);
return ContractInstance;
}();
var Transaction = function () {
/**
* Constructor a transaction object.
*
* @param {Object} config Configuration options.
* @param {ContractInstance} config.parent The parent `ContratInstance`.
* @param {String} config.hash Transaction hash.
*/
function Transaction(config) {
_classCallCheck(this, Transaction);
this._web3 = config.parent._web3;
this._logger = config.parent._logger;
this._hash = config.hash;
}
/**
* Get transaction hash.
* @return {String}
*/
_createClass(Transaction, [{
key: 'getReceipt',
value: function getReceipt() {
var _this6 = this;
return new Promise(function (resolve, reject) {
_this6._fetchReceiptLoop(resolve, reject);
});
}
}, {
key: '_fetchReceiptLoop',
value: function _fetchReceiptLoop(onSuccess, onError) {
var _this7 = this;
this._logger.debug('Fetch receipt for tx ' + this.hash + ' ...');
this._web3.eth.getTransactionReceipt(this.hash, function (err, receipt) {
Iif (err) {
_this7._logger.error('Transaction receipt error', err);
return onError(err);
}
if (receipt) {
onSuccess(receipt);
} else {
_this7._fetchReceiptLoopTimer = setTimeout(function () {
_this7._fetchReceiptLoop(onSuccess, onError);
}, 1000);
}
});
}
}, {
key: 'hash',
get: function get() {
return this._hash;
}
}]);
return Transaction;
}();
module.exports = { ContractFactory: ContractFactory, Contract: Contract, ContractInstance: ContractInstance };
});
|