@ducatus/ducatus-wallet-service-rev
Version:
A service for Mutisig HD Bitcoin Wallets
229 lines • 10.1 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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) : adopt(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 = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, 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; }
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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 __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
result["default"] = mod;
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var async = __importStar(require("async"));
var lodash_1 = __importDefault(require("lodash"));
var request = __importStar(require("request"));
var storage_1 = require("./storage");
var $ = require('preconditions').singleton();
var Common = require('./common');
var Defaults = Common.Defaults;
var log = require('npmlog');
log.debug = log.verbose;
var fiatCodes = {
USD: 1,
INR: 1,
GBP: 1,
EUR: 1,
CAD: 1,
COP: 1,
NGN: 1,
BRL: 1,
ARS: 1,
AUD: 1
};
var customCoins = ['duc', 'ducx'];
var FiatRateService = (function () {
function FiatRateService() {
}
FiatRateService.prototype.init = function (opts, cb) {
var _this = this;
opts = opts || {};
this.request = opts.request || request;
this.defaultProvider = opts.defaultProvider || Defaults.FIAT_RATE_PROVIDER;
async.parallel([
function (done) {
if (opts.storage) {
_this.storage = opts.storage;
done();
}
else {
_this.storage = new storage_1.Storage();
_this.storage.connect(opts.storageOpts, done);
}
}
], function (err) {
if (err) {
log.error(err);
}
return cb(err);
});
};
FiatRateService.prototype.startCron = function (opts, cb) {
var _this = this;
opts = opts || {};
this.providers = lodash_1.default.values(require('./fiatrateproviders'));
var interval = opts.fetchInterval || Defaults.FIAT_RATE_FETCH_INTERVAL;
if (interval) {
this._fetch();
setInterval(function () {
_this._fetch();
}, interval * 60 * 1000);
}
return cb();
};
FiatRateService.prototype._fetch = function (cb) {
var _this = this;
cb = cb || function () { };
var coins = ['btc', 'bch', 'eth', 'xrp', 'duc', 'ducx'];
async.each(coins, function (coin, next2) {
var provider = customCoins.includes(coin) ? _this.providers[1] : _this.providers[0];
if (customCoins.includes(coin)) {
console.log("Get " + coin + " from " + provider.url);
}
_this._retrieve(provider, coin, function (err, res) {
if (err) {
log.warn('Error retrieving data for ' + provider.name + coin, err);
return next2();
}
_this.storage.storeFiatRate(coin, res, function (err) {
if (err) {
log.warn('Error storing data for ' + provider.name, err);
}
return next2();
});
});
}, cb);
};
FiatRateService.prototype._retrieve = function (provider, coin, cb) {
log.debug("Fetching data for " + provider.name + " / " + coin + " ");
var url = customCoins.includes(coin) ? provider.url : provider.url + coin.toUpperCase();
this.request.get({
url: url,
json: true
}, function (err, res, body) {
if (err || !body) {
return cb(err);
}
var customRates = [];
if (customCoins.includes(coin)) {
customRates.push({ code: 'USD', name: 'US Dollar', rate: body[coin.toUpperCase()].USD });
}
var bodyRates = customCoins.includes(coin) ? customRates : body;
log.debug("Data for " + provider.name + " / " + coin + " fetched successfully");
if (!provider.parseFn) {
return cb(new Error('No parse function for provider ' + provider.name));
}
try {
var rates = lodash_1.default.filter(provider.parseFn(bodyRates), function (x) { return fiatCodes[x.code]; });
return cb(null, rates);
}
catch (e) {
return cb(e);
}
});
};
FiatRateService.prototype.getRate = function (opts, cb) {
var _this = this;
$.shouldBeFunction(cb);
opts = opts || {};
var now = Date.now();
var coin = opts.coin || 'btc';
var ts = lodash_1.default.isNumber(opts.ts) || lodash_1.default.isArray(opts.ts) ? opts.ts : now;
async.map([].concat(ts), function (ts, cb) {
_this.storage.fetchFiatRate(coin, opts.code, ts, function (err, rate) {
if (err)
return cb(err);
if (rate && ts - rate.ts > Defaults.FIAT_RATE_MAX_LOOK_BACK_TIME * 60 * 1000)
rate = null;
return cb(null, {
ts: +ts,
rate: rate ? rate.value : undefined,
fetchedOn: rate ? rate.ts : undefined
});
});
}, function (err, res) {
if (err)
return cb(err);
if (!lodash_1.default.isArray(ts))
res = res[0];
return cb(null, res);
});
};
FiatRateService.prototype.getHistoricalRates = function (opts, cb) {
return __awaiter(this, void 0, void 0, function () {
var historicalRates, now, ts, coins, customCoins;
var _this = this;
return __generator(this, function (_a) {
$.shouldBeFunction(cb);
opts = opts || {};
historicalRates = {};
now = Date.now() - Defaults.FIAT_RATE_FETCH_INTERVAL * 60 * 1000;
ts = lodash_1.default.isNumber(opts.ts) ? opts.ts : now;
coins = ['btc', 'bch', 'eth', 'xrp', 'duc', 'ducx'];
customCoins = ['duc', 'ducx'];
async.map(coins, function (coin, cb) { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
this.storage.fetchHistoricalRates(coin, opts.code, ts, function (err, rates) {
if (err)
return cb(err);
if (!rates)
return cb();
for (var _i = 0, rates_1 = rates; _i < rates_1.length; _i++) {
var rate = rates_1[_i];
rate.rate = rate.value;
rate.fetchedOn = rate.ts;
}
historicalRates[coin] = rates;
return cb(null, historicalRates);
});
return [2];
});
}); }, function (err, res) {
if (err)
return cb(err);
return cb(null, res[0]);
});
return [2];
});
});
};
return FiatRateService;
}());
exports.FiatRateService = FiatRateService;
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