bitcore-node
Version:
A blockchain indexing node with extended capabilities using bitcore
124 lines • 5.15 kB
JavaScript
"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Event = exports.EventService = void 0;
const events_1 = require("events");
const Loggify_1 = require("../decorators/Loggify");
const logger_1 = __importDefault(require("../logger"));
const events_2 = require("../models/events");
const config_1 = require("./config");
const storage_1 = require("./storage");
let EventService = class EventService {
constructor({ storageService = storage_1.Storage, eventModel = events_2.EventStorage, configService = config_1.Config } = {}) {
this.txEvent = new events_1.EventEmitter();
this.blockEvent = new events_1.EventEmitter();
this.addressCoinEvent = new events_1.EventEmitter();
this.events = new events_1.EventEmitter();
this.stopped = false;
this.storageService = storageService;
this.configService = configService;
this.eventModel = eventModel;
this.signalTx = this.signalTx.bind(this);
this.signalBlock = this.signalBlock.bind(this);
this.signalAddressCoin = this.signalAddressCoin.bind(this);
}
start() {
if (this.configService.isDisabled('event')) {
logger_1.default.info('Disabled Event Service');
return;
}
logger_1.default.info('Starting Event Service');
this.stopped = false;
this.events.emit('start');
if (this.storageService.connected) {
this.wireup();
}
else {
this.storageService.connection.on('CONNECTED', () => {
this.wireup();
});
}
}
async stop() {
logger_1.default.info('Stopping Event Service');
this.stopped = true;
this.events.emit('stop');
this.events.removeAllListeners();
this.txEvent.removeAllListeners();
this.blockEvent.removeAllListeners();
this.addressCoinEvent.removeAllListeners();
}
async wireup() {
let lastBlockUpdate = new Date();
let lastTxUpdate = new Date();
let lastAddressTxUpdate = new Date();
const retryTxCursor = async () => {
const txCursor = this.eventModel.getTxTail(lastTxUpdate);
while (!this.stopped && (await txCursor.hasNext())) {
const txEvent = await txCursor.next();
if (txEvent) {
const tx = txEvent.payload;
this.txEvent.emit('tx', tx);
lastTxUpdate = new Date();
}
}
if (!this.stopped) {
setTimeout(retryTxCursor, 100);
}
};
retryTxCursor();
const retryBlockCursor = async () => {
const blockCursor = this.eventModel.getBlockTail(lastBlockUpdate);
while (!this.stopped && (await blockCursor.hasNext())) {
const blockEvent = await blockCursor.next();
if (blockEvent) {
const block = blockEvent.payload;
this.blockEvent.emit('block', block);
lastBlockUpdate = new Date();
}
}
if (!this.stopped) {
setTimeout(retryBlockCursor, 100);
}
};
retryBlockCursor();
const retryAddressTxCursor = async () => {
const addressTxCursor = this.eventModel.getCoinTail(lastAddressTxUpdate);
while (!this.stopped && (await addressTxCursor.hasNext())) {
const addressTx = await addressTxCursor.next();
if (addressTx) {
const addressCoin = addressTx.payload;
this.addressCoinEvent.emit('coin', addressCoin);
lastAddressTxUpdate = new Date();
}
}
if (!this.stopped) {
setTimeout(retryAddressTxCursor, 100);
}
};
retryAddressTxCursor();
}
async signalBlock(block) {
await this.eventModel.signalBlock(block);
}
async signalTx(tx) {
await this.eventModel.signalTx(tx);
}
async signalAddressCoin(payload) {
await this.eventModel.signalAddressCoin(payload);
}
};
exports.EventService = EventService;
exports.EventService = EventService = __decorate([
Loggify_1.LoggifyClass
], EventService);
exports.Event = new EventService();
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