parse-server: Live query not working

New Issue Checklist

I am not disclosing a vulnerability.
I am not just asking a question.
I have searched through existing issues.
I can reproduce the issue with the latest version of Parse Server.

Issue Description

I’m facing an issue with live queries. The client receives the “open” event but doesn’t receive the “create” or “update” events.

Server setup:

var app = express();
app.use(compression());
app.enable('trust proxy');
app.use(bodyParser.json({limit: '50mb'}));
app.use(compression());
app.use(cookieParser());
app.use(device.capture());

app.use('/parse', new ParseServer({
    databaseURI: DATABASE_URI,
    appId: APP_ID,
    masterKey: MASTER_KEY,
    serverURL: 'http://localhost/parse',
    cloud: __dirname + '/cloud/main.js',
    liveQuery: {
        classNames: ['Order', 'Sale']
    }
}));

app.set('view engine', 'ejs');
app.use('/', routes);

const httpServer = require('http').createServer(app);
httpServer.listen(80);
var parseLiveQueryServer = ParseServer.createLiveQueryServer(httpServer);

Client setup:

Parse.initialize(APP_ID);
Parse.serverURL = 'http://localhost/parse';

var query = new Parse.Query('Sale');
query.equalTo('status','pending');
var subscription = await query.subscribe();

subscription.on('open', () => {
    console.log('subscription opened');
});

subscription.on('create', (object) => {
    console.log('object created',object);
});

subscription.on('update', (object) => {
    console.log('object updated',object);
});

Environment

"axios": "^0.21.1",
"body-parser": "^1.19.0",
"card-validator": "^8.1.1",
"compression": "^1.7.4",
"cookie-parser": "^1.4.5",
"coordenadas-do-cep": "^1.2.0",
"ejs": "^3.1.5",
"excel4node": "^1.7.2",
"express": "^4.17.1",
"express-device": "^0.4.2",
"fs": "0.0.1-security",
"http": "0.0.1-security",
"https": "^1.0.0",
"image-search-google": "^1.3.0",
"parse-dashboard": "^2.1.0",
"parse-server": "^4.5.0",
"path": "^0.12.7",
"request": "^2.88.2",
"serve-favicon": "^2.5.0",
"shelljs": "^0.8.4"

Server

Parse Server version: ^4.5.0
Operating system: Windows & Linux
Local or remote host: localhost

Database

System : MongoDB
Database version: v4.4.6
Local or remote host: Google Cloud

Client

SDK: JavaScript
SDK version: 3.3.0

Logs

info: Create new client: 3e332475-fabe-488c-9a9c-fd6b69cc3ce6

About this issue

Original URL
State: open
Created 3 years ago
Reactions: 1
Comments: 15 (5 by maintainers)

Most upvoted comments

I think my problem is with scalability. I’m running my parse server on multiple cores so how would I go on about doing this?

I’ve created a redis server on my local machine running on port :6379

Server:

app.use('/parse', new ParseServer({
    databaseURI: DATABASE_URI,
    appId: APP_ID,
    masterKey: MASTER_KEY,
    serverURL: 'http://localhost/parse',
    cloud: __dirname + '/cloud/main.js',
    liveQuery: {
        classNames: ['Order', 'Sale'],
        redisURL: 'redis://localhost:6379'
    }
}));

var httpServer = require('http').createServer(app);
httpServer.listen(80);
var parseLiveQueryServer = ParseServer.createLiveQueryServer(httpServer,{
    redisURL: 'redis://localhost:6379'
});

Client:

Parse.initialize(APP_ID);
Parse.serverURL = 'http://localhost/parse';

However I only receive events when running in single core. Am I missing something?

franalt on Jul 29, 2021