sendSocketNotification() does not arrive at module

[mjlee]

Hi,

I’m very new to MM (2 days in…).

I have successfully got a module I’ve written working. It scrapes a local transit website for real-time train departure info and displays in the mirror.

My second module, however, is having problems. The node_helper is getting socket notifications from the module, but when it calls sendSocketNotification(), nothing is received at the module. I tried used the original (working) module as a template, making it almost an exact copy of the working module, but that didn’t help.

I’ve stipped it back to almost nothing, and still no luck. Here’s the node_helper and module file in question:

node_helper.js:

const NodeHelper = require('node_helper');

module.exports = NodeHelper.create({

  start: function() {
    console.log("Starting node helper: " + this.name);
  },

  socketNotificationReceived: function(notification, payload) {
    var self = this;
    console.log("Notification: " + notification + " Payload: " + JSON.stringify(payload));

    if (notification === "GET_DATA") {
      self.sendSocketNotification("GOT_DATA", "1234566789");
    }
  }
});

and MMM-MYTEST.js:

Module.register("MMM-MYTEST", {
  // Default configs
  defaults: {
    intervalSecs: 10,
  },

  start: function () {
    Log.info(this.config);
    Log.log('Starting module: ' + this.name);
    self = this;

    self.getData();

    setInterval(function() {
      self.getData();
    }, self.config.intervalSecs * 1000);
  },

  getData: function () {
    Log.info(this.name + ': Getting data');
    this.sendSocketNotification("GET_DATA", {
      config: this.config,
    });
  },

  getStyles: function () {
    return [
      this.file('styles.css'),
    ];
  },

  socketNotificationReceived: function(notification, payload) {
    if (notification === "GOT_DATA") {
      Log.info('socketNotificationReceived: GOT_DATA');
      this.updateDom();
    }
  },

  // Override the DOM generator
  getDom: function () {
    let wrapper = document.createElement('div');
    return wrapper;
  },
});

And snipped log output while running (I added some debug outout to NodeHelper.socketNotificationReceived() to make sure it was being called):

[27.02.2023 14:10.56.820] [LOG]   Notification: GET_DATA Payload: {"config":{"intervalSecs":10}}
[27.02.2023 14:10.56.821] [INFO]  in MMM-MYTEST sendSocketNotification GOT_DATA
[27.02.2023 14:11.06.819] [LOG]   Notification: GET_DATA Payload: {"config":{"intervalSecs":10}}
[27.02.2023 14:11.06.820] [INFO]  in MMM-MYTEST sendSocketNotification GOT_DATA
[27.02.2023 14:11.16.827] [LOG]   Notification: GET_DATA Payload: {"config":{"intervalSecs":10}}
[27.02.2023 14:11.16.829] [INFO]  in MMM-MYTEST sendSocketNotification GOT_DATA

So I can see that NodeHelp.socketNotificationRecieved() is being called, but my module never gets the notification. I’ve run out of debug ideas. Any assistance would be greatly appreciated.

m

[bhepler]

@mjlee - I copied your code and I’m not getting the same results.
From the browser console:

socketNotificationReceived: GOT_DATA    MMM-MYTEST.js:20 
MMM-MYTEST: Getting data                MMM-MYTEST.js:34 
socketNotificationReceived: GOT_DATA    MMM-MYTEST.js:20 
MMM-MYTEST: Getting data                MMM-MYTEST.js:34 

And from the terminal console:

Ready to go! Please point your browser to: http://localhost:8080
[28.02.2023 20:52.46.170] [LOG]   Notification: GET_DATA Payload: {"config":{"intervalSecs":10}}
[28.02.2023 20:52.46.207] [INFO]  Checking git for module: MMM-MYTEST
[28.02.2023 20:52.46.207] [INFO]  Checking git for module: default
[28.02.2023 20:52.56.164] [LOG]   Notification: GET_DATA Payload: {"config":{"intervalSecs":10}}
[28.02.2023 20:53.06.156] [LOG]   Notification: GET_DATA Payload: {"config":{"intervalSecs":10}}

Perhaps the issue is that you’re looking at the wrong console log? The MYTEST.js log will write to the browser’s console rather than the terminal.