example of a background job

background-job-example.js

/**
 * Module dependencies
 */
var SailsApp = require('sails').Sails;

// e.g. `jobs/clean-up-orphaned-images`

var sails = new SailsApp();
sails.load({ hooks: {grunt: false} }, function afterwards(err) {
  if (err) {
    console.error('Failed to load sails:',err);
    return;
  }

  // Do your stuff-- your models and services and such are now accessible.
  // this is just a self-calling function to ensure that sails.lower() gets called either way
  (function _doYourStuff (done){
    // e.g. destroy orphaned "File" records from more than 12 hours ago which were never associated with a user
    var twelveHoursAgo = new Date( (new Date()).getTime() - (12*60*60*1000) );
    File.destroy({
      avatarOf: null
      createdAt: twelveHoursAgo
    }).exec(function destroyedOrphans (err) {
      if (err) { return done(err); }
      // >> Anything else you want to do here <<
      return done();
    });
  })(function teardown(err){
    if (err) {
      console.error('Job failed with error:',err);
      console.error('(but continuing onwards to lower Sails...)');
    }
    else {
      console.log('Job completed successfully.');
    }
    
    // Then, now that we're finished (error or not), call:
    sails.lower(function afterLowering(err){
      if (err) {
        console.error('Failed to lower Sails:',err);
        return;
      }
      console.log('Successfully lowered Sails.');
    });//</callback from sails.lower()
    
  });//<self-calling function
});//</callback from sails.load()
```