getDeviceList() hangs indefinitely

TagoCore Support
1

Hi, I am trying to use the getDeviceList snippet from here, in the plugin example code but that method never appears to return.

  1. const { core, ServiceModule } = require(“@tago-io/tcore-sdk”);

  2. const express = require(‘express’);

  3. const app = express();

  5. let server = null;

  7. const service = new ServiceModule({

  8.  id: "getting-started-service",

  9.  name: "Getting Started Service",

  10.  configs: \[

  11.      {

  12.          type: "number",

  13.          field: "port",

  14.          name: "Port",

  15.          required: true,

  16.      }

  17.  \],

  18. });

  20. service.onLoad = async (userValues) => {

  21.  if (!userValues.port) {

  22.      throw new Error("Invalid port");

  23.  }

  25.  app.get('/', (req, res) => {

  26.      res.send('Hello World')

  27.  });

  29.  server = app.listen(userValues.port);

  30.  getDeviceList();

  31. };

  33. async function getDeviceList() {

  34.  try {

  35.      console.log("Before getDeviceList()");

  36.      const list = await core.getDeviceList();

  37.      console.log("Retrieved", list.length, "devices"); 

  38.  } catch {

  39.      (error) => { console.log(error) };

  40.  }

  42.  service.onDestroy = () => {

  43.      server.close();

  44.  };

  45. }

I see the “Before getDeviceList()” log message but never the “Retreived” message.

I did add the Device permission in the manifest.

Am I missing something?

Cheers,

Erwin

2

Hi Erwin,

It seems that the catch block in your code has a syntax error, which is preventing the error message from being logged to the console. Furthermore there is a bug in the getDeviceList method that makes it not work without parameters, this will be fixed in the future.

Here’s an example of your code fixed:

const { core, ServiceModule } = require("@tago-io/tcore-sdk");const express = require('express');const app = express();let server = null;const service = new ServiceModule({id: "getting-started-service",name: "Getting Started Service",configs: [{type: "number",field: "port",name: "Port",required: true,defaultValue: 3333,}],});service.onLoad = async (userValues) => {if (!userValues.port) {throw new Error("Invalid port");}app.get('/', async (req, res) => {return res.send(await getDeviceList());});server = app.listen(userValues.port);};async function getDeviceList() {try {console.log("Before getDeviceList()");const list = await core.getDeviceList({ page: 1, amount: 10 });console.log("Retrieved", list.length, "devices");return list;} catch(error) {console.log(error);return { error }}}service.onDestroy = () => {server.close();};