WIP
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Josh Harvey
parent
668ba7d08c
commit
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1 changed files with 103 additions and 85 deletions
154
lib/plugins.js
154
lib/plugins.js
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@ -18,9 +18,9 @@ var DEPOSIT_TIMEOUT = 130 * 1000;
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var db = null;
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var tickerPlugin = null;
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var tickerPlugins = {};
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var traderPlugin = null;
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var walletPlugin = null;
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var walletPlugins = {};
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var idVerifierPlugin = null;
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var infoPlugin = null;
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@ -29,14 +29,9 @@ var currentlyUsedPlugins = {};
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var cachedConfig = null;
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var deviceCurrency = 'USD';
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var lastBalances = null;
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var lastBalances = {};
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var lastRates = {};
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var balanceInterval = null;
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var rateInterval = null;
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var tradeInterval = null;
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var reapTxInterval = null;
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var tradesQueue = [];
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// that's basically a constructor
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@ -104,10 +99,15 @@ function loadPlugin(name, config) {
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return plugin;
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}
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function loadOrConfigPlugin(pluginHandle, pluginType, currency,
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function loadOrConfigPlugin(pluginHandle, pluginType, cryptoCoin, currency,
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onChangeCallback) {
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var currentName = cachedConfig.exchanges.plugins.current[pluginType];
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var pluginChanged = currentlyUsedPlugins[pluginType] !== currentName;
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if (!cryptoCoin) cryptoCoin = 'any'
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var currentName = cryptoCoin === 'any' || cryptoCoin === 'BTC'
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? cachedConfig.exchanges.plugins.current[pluginType]
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: cachedConfig.exchanges.plugins.current[cryptoCoin][pluginType]
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var pluginChanged = currentlyUsedPlugins[cryptoCoin][pluginType] !== currentName;
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if (!currentName) pluginHandle = null;
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else { // some plugins may be disabled
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@ -119,8 +119,9 @@ function loadOrConfigPlugin(pluginHandle, pluginType, currency,
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if (pluginHandle && !pluginChanged) pluginHandle.config(pluginConfig);
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else {
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pluginHandle = loadPlugin(currentName, pluginConfig);
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currentlyUsedPlugins[pluginType] = currentName
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logger.debug('plugin(%s) loaded: %s', pluginType, pluginHandle.NAME ||
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currentlyUsedPlugins[cryptoCoin] ||= {}
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currentlyUsedPlugins[cryptoCoin][pluginType] = currentName
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logger.debug('[%s] plugin(%s) loaded: %s', cryptoCoin, pluginType, pluginHandle.NAME ||
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currentName);
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}
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}
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@ -138,34 +139,40 @@ exports.configure = function configure(config) {
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cachedConfig = config;
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deviceCurrency = config.exchanges.settings.currency;
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cryptoCoins = config.exchanges.settings.coins || ['BTC'];
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cryptoCoins.forEach(function (cryptoCoin) {
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// TICKER [required] configure (or load)
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loadOrConfigPlugin(
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tickerPlugin,
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tickerPlugins[cryptoCoin],
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'ticker',
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cryptoCoin,
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deviceCurrency, // device currency
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function onTickerChange(newTicker) {
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tickerPlugin = newTicker;
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pollRate();
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tickerPlugins[cryptoCoin] = newTicker;
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pollRate(cryptoCoin);
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}
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);
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// WALLET [required] configure (or load)
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loadOrConfigPlugin(
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walletPlugin,
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walletPlugins[cryptoCoin],
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'transfer',
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cryptoCoin,
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null,
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function onWalletChange(newWallet) {
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walletPlugin = newWallet;
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pollBalance();
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walletPlugins[cryptoCoin] = newWallet;
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pollBalance(cryptoCoin);
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}
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);
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})
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// TRADER [optional] configure (or load)
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traderPlugin = loadOrConfigPlugin(
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traderPlugin,
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'trade',
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null,
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null,
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function onTraderChange(newTrader) {
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traderPlugin = newTrader;
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if (newTrader === null) stopTrader();
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@ -222,26 +229,35 @@ exports.pollQueries = function pollQueries(session, cb) {
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});
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};
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function _sendBitcoins(toAddress, satoshis, cb) {
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function _sendCoins(toAddress, cryptoUnits, cryptoCoin, cb) {
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var walletPlugin = walletPlugins[cryptoCoin]
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var transactionFee = cachedConfig.exchanges.settings.transactionFee;
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walletPlugin.sendBitcoins(toAddress, satoshis, transactionFee, cb);
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if (cryptoCoin === 'BTC')
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walletPlugin.sendBitcoins(toAddress, cryptoUnits, transactionFee, cb);
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else
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walletPlugin.sendCoins(toAddress, cryptoUnits, cryptoCoin, transactionFee, cb);
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}
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function executeTx(session, tx, authority, cb) {
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db.addOutgoingTx(session, tx, function(err, toSend) {
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if (err) return cb(err);
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var satoshisToSend = toSend.satoshis;
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if (satoshisToSend === 0)
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var cryptoUnitsToSend = toSend.cryptoUnits;
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if (cryptoUnitsToSend === 0)
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return cb(null, {statusCode: 204, txId: tx.txId, txHash: null});
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_sendBitcoins(tx.toAddress, satoshisToSend, function(_err, txHash) {
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_sendCoins(tx.toAddress, cryptoUnitsToSend, function(_err, txHash) {
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var fee = null; // Need to fill this out in plugins
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if (_err) toSend = {satoshis: 0, fiat: 0};
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if (_err) toSend = {cryptoUnits: new BigNumber(0), fiat: 0};
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db.sentCoins(session, tx, authority, toSend, fee, _err, txHash);
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if (_err) return cb(_err);
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pollBalance();
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var cryptoCoin = tx.coin
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? tx.coin.unitCode
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: 'BTC'
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pollBalance('BTC');
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cb(null, {
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statusCode: 201, // Created
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txHash: txHash,
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@ -326,6 +342,13 @@ exports.cashOut = function cashOut(session, tx, cb) {
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label: 'TX ' + Date.now(),
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account: 'deposit'
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};
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var cryptoCoin = tx.coin
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? tx.coin.unitCode
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: 'BTC'
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var walletPlugin = walletPlugins[cryptoCoin]
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walletPlugin.newAddress(tmpInfo, function(err, address) {
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if (err) return cb(err);
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@ -341,11 +364,12 @@ exports.dispenseAck = function dispenseAck(session, rec) {
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db.addDispense(session, rec.tx, rec.cartridges);
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};
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exports.fiatBalance = function fiatBalance() {
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var rawRate = exports.getDeviceRate().rates.ask;
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exports.fiatBalance = function fiatBalance(cryptoCoin) {
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var rawRate = exports.getDeviceRate(cryptoCoin).rates.ask;
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var commission = cachedConfig.exchanges.settings.commission;
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var lastBalance = lastBalances[cryptoCoin]
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if (!rawRate || !lastBalances) return null;
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if (!rawRate || !lastBalance) return null;
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// The rate is actually our commission times real rate.
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var rate = commission * rawRate;
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@ -356,16 +380,9 @@ exports.fiatBalance = function fiatBalance() {
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// `balance.transferBalance` is the balance of our transfer account (the one
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// we use to send Bitcoins to clients) in satoshis.
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var transferBalance = lastBalances.transferBalance.BTC;
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var transferBalance = lastBalances.transferBalance;
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// Since `transferBalance` is in satoshis, we need to turn it into
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// bitcoins and then fiat to learn how much fiat currency we can exchange.
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//
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// Unit validity proof: [ $ ] = [ (B * 10^8) / 10^8 * $/B ]
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// [ $ ] = [ B * $/B ]
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// [ $ ] = [ $ ]
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var fiatTransferBalance = ((transferBalance / SATOSHI_FACTOR) * rate) /
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lowBalanceMargin;
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var fiatTransferBalance = (transferBalance * rate) / lowBalanceMargin;
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return fiatTransferBalance;
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};
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@ -376,14 +393,12 @@ exports.fiatBalance = function fiatBalance() {
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exports.startPolling = function startPolling() {
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executeTrades();
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if (!balanceInterval)
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balanceInterval = setInterval(pollBalance, POLLING_RATE);
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cryptoCoins.forEach(function (coin) {
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setInterval(async.apply(pollBalance, coin), POLLING_RATE);
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setInterval(async.apply(pollRate, coin), POLLING_RATE);
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});
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if (!rateInterval)
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rateInterval = setInterval(pollRate, POLLING_RATE);
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if (!reapTxInterval)
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reapTxInterval = setInterval(reapTxs, REAP_RATE);
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setInterval(reapTxs, REAP_RATE);
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startTrader();
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};
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@ -400,6 +415,7 @@ function startTrader() {
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);
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}
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}
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function stopTrader() {
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if (tradeInterval) {
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clearInterval(tradeInterval);
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@ -408,35 +424,39 @@ function stopTrader() {
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}
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}
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function pollBalance(cb) {
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logger.debug('collecting balance');
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function pollBalance(cryptoCoin, cb) {
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logger.debug('[%s] collecting balance', cryptoCoin);
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var walletPlugin = walletPlugins[cryptoCoin]
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var jobs = {
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transferBalance: walletPlugin.balance
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};
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// only add if trader is enabled
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// if (traderPlugin) {
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// // NOTE: we would need to handle when traderCurrency!=deviceCurrency
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// jobs.tradeBalance = traderPlugin.balance;
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// }
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async.parallel(jobs, function(err, balance) {
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walletPlugin.balance(function(err, balance) {
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if (err) {
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logger.error(err);
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return cb && cb(err);
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}
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logger.debug('Balance update:', balance);
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logger.debug('[%s] Balance update:', cryptoCoin, balance);
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balance.timestamp = Date.now();
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lastBalances = balance;
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lastBalances[cryptoCoin] = balance;
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return cb && cb(null, lastBalances);
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});
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}
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function pollRate(cb) {
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logger.debug('polling for rates (%s)', tickerPlugin.NAME);
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function pollRates (cb) {
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var polls = cryptoCoins.map(function (cryptoCoin) {
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async.apply(pollRate, cryptoCoin)
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});
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async.parallel(polls, cb);
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}
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function pollRate(cryptoCoin, cb) {
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logger.debug('[%s] polling for rates (%s)', cryptoCoin, tickerPlugin.NAME);
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var tickerPlugin = tickerPlugins[cryptoCoin];
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tickerPlugin.ticker(deviceCurrency, function(err, resRates) {
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if (err) {
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@ -446,7 +466,7 @@ function pollRate(cb) {
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logger.debug('got rates: %j', resRates);
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resRates.timestamp = new Date();
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lastRates = resRates;
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lastRates[cryptoCoin] = resRates;
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return cb && cb(null, lastRates);
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});
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@ -455,16 +475,14 @@ function pollRate(cb) {
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/*
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* Getters | Helpers
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*/
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function getLastRate(currency) {
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if (!lastRates) return null;
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var tmpCurrency = currency || deviceCurrency;
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if (!lastRates[tmpCurrency]) return null;
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exports.getDeviceRate = function getDeviceRate(cryptoCoin) {
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if (!lastRates[cryptoCoin]) return null;
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return lastRates[tmpCurrency];
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}
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exports.getDeviceRate = function getDeviceRate() {
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return getLastRate(deviceCurrency);
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var lastRate = lastRates[cryptoCoin]
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if (!lastRate) return null;
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return lastRate[deviceCurrency];
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};
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exports.getBalance = function getBalance() {
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@ -479,7 +497,7 @@ exports.getBalance = function getBalance() {
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function purchase(trade, cb) {
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traderPlugin.purchase(trade.satoshis, null, function(err) {
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if (err) return cb(err);
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pollBalance();
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pollBalance('BTC');
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if (typeof cb === 'function') cb();
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});
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}
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