132 lines
3.4 KiB
JavaScript
Executable File
132 lines
3.4 KiB
JavaScript
Executable File
import Redis from 'redis';
|
|
import Logger from './logger';
|
|
import { Meteor } from 'meteor/meteor';
|
|
import { EventEmitter2 } from 'eventemitter2';
|
|
|
|
const REQUEST_EVENT = 'get_all_meetings_request';
|
|
|
|
class RedisPubSub {
|
|
constructor(config = {}) {
|
|
this.config = config;
|
|
|
|
this.didSendRequestEvent = false;
|
|
this.pub = Redis.createClient();
|
|
this.sub = Redis.createClient();
|
|
this.emitter = new EventEmitter2();
|
|
this.queue = new PowerQueue();
|
|
|
|
this.handleTask = this.handleTask.bind(this);
|
|
this.handleSubscribe = this.handleSubscribe.bind(this);
|
|
this.handleMessage = this.handleMessage.bind(this);
|
|
}
|
|
|
|
init(config = {}) {
|
|
this.queue.taskHandler = this.handleTask;
|
|
this.sub.on('psubscribe', Meteor.bindEnvironment(this.handleSubscribe));
|
|
this.sub.on('pmessage', Meteor.bindEnvironment(this.handleMessage));
|
|
|
|
this.queue.reset();
|
|
this.sub.psubscribe(this.config.channels.fromBBBApps);
|
|
this.sub.psubscribe(this.config.channels.toBBBApps.html5);
|
|
|
|
Logger.info(`Subscribed to '${this.config.channels.fromBBBApps}'`);
|
|
}
|
|
|
|
updateConfig(config) {
|
|
this.config = Object.assign({}, this.config, config);
|
|
}
|
|
|
|
on(event, listener) {
|
|
return this.emitter.on(...arguments);
|
|
}
|
|
|
|
publish(channel, eventName, payload = {}, header = {}) {
|
|
const message = {
|
|
header: Object.assign({
|
|
timestamp: new Date().getTime(),
|
|
name: eventName,
|
|
}, header),
|
|
payload,
|
|
};
|
|
|
|
this._debug(`Publishing ${eventName} to ${channel}`);
|
|
return this.pub.publish(channel, JSON.stringify(message), (err, res) => {
|
|
if (err) {
|
|
Logger.error('Tried to publish to %s', channel, message);
|
|
}
|
|
});
|
|
}
|
|
|
|
handleSubscribe() {
|
|
if (this.didSendRequestEvent) return;
|
|
|
|
this.publish(this.config.channels.toBBBApps.meeting, REQUEST_EVENT);
|
|
this.didSendRequestEvent = true;
|
|
}
|
|
|
|
handleMessage(pattern, channel, message = '') {
|
|
console.log(` 1.1: ${message}`);
|
|
try {
|
|
message = JSON.parse(message);
|
|
} catch (e) {}
|
|
|
|
const eventName = message.header.name;
|
|
const messagesWeIgnore = this.config.ignoredMessages || [];
|
|
|
|
if (!messagesWeIgnore.includes(eventName)) {
|
|
this._debug(`${eventName} added to queue`);
|
|
|
|
// Logger.info(`QUEUE | PROGRESS ${this.queue.progress()}% | LENGTH ${this.queue.length()}}`);
|
|
|
|
return this.queue.add({
|
|
pattern,
|
|
channel,
|
|
eventName,
|
|
message,
|
|
});
|
|
}
|
|
}
|
|
|
|
handleTask(data, next, failures) {
|
|
const { eventName, message } = data;
|
|
|
|
try {
|
|
message.callback = () => {}; // legacy noop function
|
|
|
|
this._debug(`${eventName} emitted`);
|
|
return this.emitter
|
|
.emitAsync(eventName, message)
|
|
.then((_) => {
|
|
this._debug(`${eventName} completed`);
|
|
return next();
|
|
})
|
|
.catch((reason) => {
|
|
this._debug(`${eventName} completed with error`);
|
|
Logger.error(`${eventName}: ${reason}`);
|
|
return next();
|
|
});
|
|
} catch (reason) {
|
|
this._debug(`${eventName} completed with error`);
|
|
Logger.error(`${eventName}: ${reason}`);
|
|
return next();
|
|
}
|
|
}
|
|
|
|
_debug(message) {
|
|
if (this.config.debug) {
|
|
Logger.info(message);
|
|
}
|
|
}
|
|
}
|
|
|
|
const RedisPubSubSingleton = new RedisPubSub();
|
|
|
|
Meteor.startup(() => {
|
|
const REDIS_CONFIG = Meteor.settings.redis;
|
|
|
|
RedisPubSubSingleton.updateConfig(REDIS_CONFIG);
|
|
RedisPubSubSingleton.init();
|
|
});
|
|
|
|
export default RedisPubSubSingleton;
|