bivcore-wallet-service
Version:
A service for Mutisig HD Bitcoin Value Wallets
188 lines • 7.11 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.FiatRateService = void 0;
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 logger_1 = __importDefault(require("./logger"));
var fiatCodes = {
USD: 1,
INR: 1,
GBP: 1,
EUR: 1,
CAD: 1,
COP: 1,
NGN: 1,
BRL: 1,
ARS: 1,
AUD: 1
};
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) {
logger_1.default.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', 'biv', 'eth', 'xrp'];
var provider = this.providers[0];
async.each(coins, function (coin, next2) {
_this._retrieve(provider, coin, function (err, res) {
if (err) {
logger_1.default.warn('Error retrieving data for ' + provider.name + coin, err);
return next2();
}
_this.storage.storeFiatRate(coin, res, function (err) {
if (err) {
logger_1.default.warn('Error storing data for ' + provider.name, err);
}
return next2();
});
});
}, cb);
};
FiatRateService.prototype._retrieve = function (provider, coin, cb) {
logger_1.default.debug("Fetching data for " + provider.name + " / " + coin + " ");
this.request.get({
url: provider.url + coin.toUpperCase(),
json: true
}, function (err, res, body) {
if (err || !body) {
return cb(err);
}
logger_1.default.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(body), 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) {
var _this = this;
$.shouldBeFunction(cb);
opts = opts || {};
var historicalRates = {};
var now = Date.now() - Defaults.FIAT_RATE_FETCH_INTERVAL * 60 * 1000;
var ts = lodash_1.default.isNumber(opts.ts) ? opts.ts : now;
var coins = ['btc', 'bch', 'biv', 'eth', 'xrp'];
async.map(coins, function (coin, cb) {
_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;
delete rate['_id'];
delete rate['code'];
delete rate['value'];
delete rate['coin'];
}
historicalRates[coin] = rates;
return cb(null, historicalRates);
});
}, function (err, res) {
if (err)
return cb(err);
return cb(null, res[0]);
});
};
return FiatRateService;
}());
exports.FiatRateService = FiatRateService;
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