101 lines
2.8 KiB
JavaScript
101 lines
2.8 KiB
JavaScript
'use strict';
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var $ = require('preconditions').singleton();
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var _ = require('lodash');
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var async = require('async');
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var log = require('npmlog');
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log.debug = log.verbose;
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var Uuid = require('uuid');
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var inherits = require('inherits');
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var events = require('events');
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var nodeutil = require('util');
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var WalletUtils = require('bitcore-wallet-utils');
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var Bitcore = WalletUtils.Bitcore;
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var WalletService = require('./server');
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var BlockchainExplorer = require('./blockchainexplorer');
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var Notification = require('./model/notification');
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function BlockchainMonitor() {
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var self = this;
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this.subscriptions = {};
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this.subscriber = {};
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this.subscriber['livenet'] = self._getAddressSubscriber('insight', 'livenet');
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this.subscriber['testnet'] = self._getAddressSubscriber('insight', 'testnet');
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};
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nodeutil.inherits(BlockchainMonitor, events.EventEmitter);
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BlockchainMonitor.prototype._getAddressSubscriber = function(provider, network) {
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$.checkArgument(provider == 'insight', 'Blockchain monitor ' + provider + ' not supported');
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var explorer = new BlockchainExplorer({
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provider: provider,
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network: network,
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});
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var socket = explorer.initSocket();
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// TODO: Extract on its own class once more providers are implemented
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return {
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subscribe: function(address, handler) {
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socket.emit('subscribe', address);
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socket.on(address, handler);
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},
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};
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};
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BlockchainMonitor.prototype.subscribeAddresses = function(walletId, addresses) {
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$.checkArgument(walletId);
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var self = this;
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if (!addresses || addresses.length == 0) return;
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function handlerFor(address, txid) {
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var notification = Notification.create({
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walletId: this,
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type: 'NewIncomingTx',
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data: {
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address: address,
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txid: txid,
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},
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});
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self.emit('notification', notification);
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};
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if (!self.subscriptions[walletId]) {
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self.subscriptions[walletId] = {
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addresses: [],
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};
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};
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var addresses = [].concat(addresses);
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var network = Bitcore.Address.fromString(addresses[0]).network.name;
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var subscriber = self.subscriber[network];
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_.each(addresses, function(address) {
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self.subscriptions[walletId].addresses.push(address);
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subscriber.subscribe(address, _.bind(handlerFor, walletId, address));
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});
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};
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BlockchainMonitor.prototype.subscribeWallet = function(walletService, cb) {
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var self = this;
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var walletId = walletService.walletId;
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if (self.subscriptions[walletId]) return;
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walletService.getMainAddresses({}, function(err, addresses) {
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if (err) {
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delete self.subscriptions[walletId];
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return cb(new Error('Could not subscribe to addresses for wallet ' + walletId));
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}
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self.subscribeAddresses(walletService.walletId, _.pluck(addresses, 'address'));
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return cb();
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});
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};
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module.exports = BlockchainMonitor;
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