nem-library
Version:
Reactive Library for NEM
76 lines • 3.05 kB
JavaScript
;
/*
* The MIT License (MIT)
*
* Copyright (c) 2017 NEM
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
Object.defineProperty(exports, "__esModule", { value: true });
const _ = require("lodash");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
const Listener_1 = require("./Listener");
const CreateTransactionFromDTO_1 = require("./transaction/CreateTransactionFromDTO");
/**
* ConfirmedTransaction listener
*/
class ConfirmedTransactionListener extends Listener_1.Listener {
/**
* Constructor
* @param nodes
*/
constructor(nodes) {
super(nodes);
}
/**
* Start listening new confirmed transactions
* @param address
* @returns {Observable<Transaction>}
*/
given(address) {
return rxjs_1.Observable.create((observer) => {
let lastTransaction;
const client = this.createClient();
client.connect({}, () => {
//initial subscription to address.
client.send("/w/api/account/subscribe", {}, "{'account':'" + address.plain() + "'}");
client.subscribe("/transactions/" + address.plain(), (data) => {
try {
const transaction = CreateTransactionFromDTO_1.CreateTransactionFromDTO(JSON.parse(data.body));
if (!_.isEqual(transaction, lastTransaction)) {
observer.next(transaction);
}
lastTransaction = transaction;
}
catch (e) {
observer.error(e);
}
});
}, (err) => {
observer.error(err);
});
return () => {
client.unsubscribe();
};
}).pipe(operators_1.retry(10));
}
}
exports.ConfirmedTransactionListener = ConfirmedTransactionListener;
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