tokenlon-sdk
Version:
imToken Tokenlon API for node
173 lines • 8.23 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [0, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var _this = this;
Object.defineProperty(exports, "__esModule", { value: true });
var ethAbi = require("ethereumjs-abi");
var ethUtil = require("ethereumjs-util");
var Tx = require("ethereumjs-tx");
var _ = require("lodash");
var web3_wrapper_1 = require("../lib/web3-wrapper");
var abi_1 = require("./abi");
var math_1 = require("./math");
// Executes a message call or transaction, which is directly executed in the VM of the node,
// but never mined into the blockchain and returns the amount of the gas used.
exports.getEstimateGas = function (tx) {
return new Promise(function (resolve, reject) {
// console.log(`[web3 req] estimateGas params: ${JSON.stringify(tx)}`)
web3_wrapper_1.default.eth.estimateGas(tx, function (err, gas) {
if (!err) {
resolve(gas);
}
else {
reject(err);
}
});
});
};
// Get the numbers of transactions sent from this address.
exports.getNonce = function (address) {
return new Promise(function (resolve, reject) {
// console.log(`[web3 req] getTransactionCount params: ${address}`)
web3_wrapper_1.default.eth.getTransactionCount(address, function (err, nonce) {
if (!err) {
// console.log(`[web3 res] getTransactionCount: ${nonce}`)
resolve(nonce);
}
else {
reject(err);
}
});
});
};
var formatArgs = function (args) {
return args.map(function (item) {
if (_.isArray(item))
return formatArgs(item);
if (math_1.isBigNumber(item))
return item.toString();
return item;
});
};
/**
* @params.contractName
* @params.method contract method name
* @params.args contract method arguments
* @description
* generate data 的 三种实现方式
* 1. 两年前的 https://github.com/ethereum/solidity.js （未实验）
* 2. web3.js lib/solidity/coder （拆不出来）
* https://github.com/ethereum/web3.js/blob/6d3e61a010501011a107a79574cc7516900fa9e4/lib/solidity/coder.js
* https://github.com/ethereum/web3.js/blob/db6efd5f2309f9aeab6283383b3f4a3d1dcb7177/lib/web3/function.js#L92
* https://github.com/ethereum/web3.js/blob/db6efd5f2309f9aeab6283383b3f4a3d1dcb7177/lib/web3.js#L107
* 3. ethereumjs-abi https://github.com/ethereumjs/ethereumjs-abi/blob/master/lib/index.js
*/
exports.encodeData = function (contractName, method, args) {
var types = abi_1.getAbiInputTypes(contractName, method);
var signatureBuffer = ethAbi.methodID(method, types);
var mainBuffer = ethAbi.rawEncode(types, formatArgs(args));
var data = ethUtil.bufferToHex(Buffer.concat([signatureBuffer, mainBuffer]));
return data;
};
exports.getTokenBalance = function (_a) {
var address = _a.address, contractAddress = _a.contractAddress;
return new Promise(function (resolve, reject) {
web3_wrapper_1.default.eth.call({
to: contractAddress,
data: exports.encodeData('token', 'balanceOf', [address]),
}, function (err, res) {
if (err) {
return reject(err);
}
resolve(math_1.toBN(res));
});
});
};
// use ethereumjs-tx and web3.eth.sendRawTransaction to send transaction by privateKey
// value must be a decimal processed number
exports.sendTransaction = function (params) { return __awaiter(_this, void 0, void 0, function () {
var address, privateKey, gasPrice, to, value, gasLimit, data, nonce, estimateGas, _e_1, privateKeyBuffer, gas, rawTx, tx, serializedTx;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
address = params.address, privateKey = params.privateKey, gasPrice = params.gasPrice, to = params.to, value = params.value, gasLimit = params.gasLimit, data = params.data;
return [4 /*yield*/, exports.getNonce(address)];
case 1:
nonce = _a.sent();
estimateGas = 0;
_a.label = 2;
case 2:
_a.trys.push([2, 4, , 5]);
return [4 /*yield*/, exports.getEstimateGas({
from: address,
to: to,
value: web3_wrapper_1.default.toHex(value),
data: data,
})];
case 3:
estimateGas = _a.sent();
return [3 /*break*/, 5];
case 4:
_e_1 = _a.sent();
return [3 /*break*/, 5];
case 5:
privateKeyBuffer = new Buffer(privateKey, 'hex');
gas = estimateGas && gasLimit ? Math.max(estimateGas, gasLimit) : (estimateGas || gasLimit);
rawTx = {
to: to,
data: data || '',
nonce: web3_wrapper_1.default.toHex(nonce),
gasPrice: web3_wrapper_1.default.toHex(gasPrice),
gasLimit: web3_wrapper_1.default.toHex(gas),
value: web3_wrapper_1.default.toHex(value),
};
tx = new (Tx.default ? Tx.default : Tx)(rawTx);
tx.sign(privateKeyBuffer);
serializedTx = tx.serialize();
return [2 /*return*/, new Promise(function (resolve, reject) {
web3_wrapper_1.default.eth.sendRawTransaction('0x' + serializedTx.toString('hex'), function (err, txHash) {
if (!err) {
resolve(txHash);
}
else {
reject(err);
}
});
})];
}
});
}); };
//# sourceMappingURL=ethereum.js.map