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.

UNSOLVED sendSocketNotification() does not arrive at module