Using got.get to make a REST API call in a cron triggered app

[pkassios]

Hi everyone,

I am trying to deploy an app which I had working on Heroku before on deta.
It's a background process written in javascript which connects to a REST API and downloads some stuff.
For the HTTP Callout I am using the got module but it doesn't seem to work and I dont know why because there is nothing written in the logs..
My code looks like this

app.lib.cron(event =>
{
  yesterday.setDate(yesterday.getDate() - 1)
  console.log('Yesterday: ' + yesterday);
  got.get(
    'https://someurl.com', {responseType: 'json'})
    .then(res => 
    {
      const headerDate = res.headers && res.headers.date ? res.headers.date : 'no response date';
      console.log('Status Code:', res.statusCode);
      console.log('Date in Response header:', headerDate);
      const orders = res.body.items;
  });

The first log message is displayed but the second one not and I get nothing else in the logs..
I am also catching any errors and logging them but no error is logged as well.

     .catch(err => {
        console.log('Error: ', err.message);
      })

Any ideas? Is this something maybe not supported?

[lemonyte]

1. Please fix the formatting of your post so that we can read the code
2. Try using console.error() instead of console.log(), because stdout may not show up in logs, while stderr does.

[lemonyte]

Note that ES modules are not supported, and the runtime is node v14.

[pkassios]

@LemonPi314 I guess this is the reson, the Got Module is an ES module and requires min node v15 :-(

[lemonyte]

Perhaps node-fetch would be a suitable alternative.

[pkassios]

@LemonPi314 I switched to node-fetch and I am getting the same behavior. I am checking the logs both on deta site and using deta logs -f and I am only getting the log outpout before the fetch call..
It seems there is an issue making callouts?
The code runs fine locally removing the app.lib.cron
The bad thing is that there is nothing in the logs to help out so unless you have any other ideas I will probably give up on deta..
Thanks again anyway!

app.lib.cron(event =>
{
  yesterday.setDate(yesterday.getDate() - 1)
  console.error('Yesterday: ' + yesterday); --> This gets printed in the console
  fetch(
    '<URL goes here>')
    .then(res => res.json())
    .then(json =>
    {
      console.error("Inside fetch"); --> This doesn't get printed in the console...
...

[lemonyte]

You need to make your cron function asynchronous and use await with fetch(). Otherwise, a Promise is created, but the function returns and the Micro instance is killed before the Promise has a chance to run.

const { app } = require('deta');
const fetch = require('node-fetch');

app.lib.cron(async (event) => {
  const response = await fetch("<URL goes here>")
  const data = await response.json();
  console.error(data)
  return data;
});

module.exports = app;

node-fetch version 2.6.7