How to properly perform one-time operations in ImpressAS?

Question

Node.js

Let's say you need to do something once. For example, parse xml and put the results into the database
. How to do it in ImpressAS when the database is connected via the Impress driver? In which directory should the script be created, and what should be done to make the Impress namespace available to it?
It seems to me that this is applications\myApp\clientnot the most suitable place for such a task - after all, this is a purely server task. As well as applications\myApp\tasks- after all, the subject task is launched not according to the schedule, but by hand.

Answer 1

If the operation must be available from different places in the application, then it can be put in /applications/myApp/lib, but here, most likely, we are talking about an operation hung on an HTTP handler, but so that it does not interfere with other requests. If such an operation is long, in this case, it needs to be forked into a separate process, as done in the example: /applications/example/server/examples/tools/forkWorker.json
File: get.js

module.exports = function(client, callback) {
  client.context.data = { someDataForWorker: 'parameterValue' };
  client.fork('worker');
  callback();
};

File: worker.js

module.exports = function(client, callback) {
  console.log('Message from forked worker');
  console.dir(Object.keys(client));
  callback();
};

Connections to the database are visible from worker.js, everything that is loaded from / lib and / init is a full-fledged process that does not process HTTP.