91 lines
3.5 KiB
TypeScript
91 lines
3.5 KiB
TypeScript
import * as amqp from 'amqplib';
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import { Schema, SchemaType } from 'mongoose';
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import { logger, RABBITMQ_URI } from '../app';
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import { Beat } from '../models/beat/beat.model.';
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import { ISeverity, NotificationType } from '../models/notifications/notification.interface';
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import { addNotification, Notification } from '../models/notifications/notification.model';
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import { IPhone } from '../models/phone/phone.interface';
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import { Phone } from '../models/phone/phone.model';
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import { User } from '../models/user/user.model';
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interface IBeat {
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token: string,
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gpsLocation: Array<number>,
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battery: number,
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timestamp: number
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}
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export class RabbitMQ {
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connection: amqp.Connection | null = null;
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channel: amqp.Channel | null = null;
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timeouts: Map<string, NodeJS.Timeout> = new Map<string, NodeJS.Timeout>();
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async init() {
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this.connection = await amqp.connect(RABBITMQ_URI);
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this.channel = await this.connection.createChannel();
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this.channel.consume('tracker', async (income) => {
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if (income === undefined || income === null) return;
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const msg: IBeat = JSON.parse(income.content.toString()) as IBeat
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// Get phone
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const phone = await Phone.findOne({ androidId: msg.token });
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if (phone == undefined) {
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logger.warning(`Received beat from unknown device with id ${msg.token}`);
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return;
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}
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logger.info(`New beat from ${phone.displayName} with ${msg.gpsLocation[2]}, ${msg.gpsLocation[3]}m height and accuracy and ${msg.battery}% battery`);
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const newBeat = await Beat.create({
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phone: phone._id,
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// [latitude, longitude, altitude]
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coordinate: [msg.gpsLocation[0], msg.gpsLocation[1], msg.gpsLocation[2]],
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accuracy: msg.gpsLocation[3],
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speed: msg.gpsLocation[4],
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battery: msg.battery,
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createdAt: msg.timestamp
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});
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// Broadcast if device became active
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if (this.timeouts.has(phone.id)) {
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clearTimeout(this.timeouts.get(phone.id)!!);
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} else {
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phone.active = true;
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await phone.save();
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this.publish(phone.user.toString(), phone.toJSON(), 'phone_alive', ISeverity.SUCCESS);
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}
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const timeoutTimer = setTimeout(async () => {
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this.publish(phone.user.toString(), phone.toJSON(), 'phone_dead', ISeverity.WARN);
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this.timeouts.delete(phone.id);
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phone.active = false;
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await phone.save();
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}, 60_000);
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this.timeouts.set(phone.id, timeoutTimer);
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this.publish(phone.user.toString(), newBeat.toJSON(), 'beat');
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}, { noAck: true });
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}
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async publish(userId: string, data: any, type: NotificationType, severity = ISeverity.INFO) {
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if (this.connection == undefined) await this.init();
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const user = await User.findById(userId);
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if (user === null) return;
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/* Manage notifications */
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if (type != 'beat') {
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if (type == 'phone_alive' || type == 'phone_dead') {
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addNotification(type, severity, ((data as IPhone)._id), user);
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}
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}
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data = { type, severity, ...data };
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console.log('Send:', data);
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this.channel?.publish('amq.topic', userId, Buffer.from(JSON.stringify(data)));
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}
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} |