bootstrap.js

/**
 * Bootstrap
 * (sails.config.bootstrap)
 *
 * An asynchronous bootstrap function that runs before your Sails app gets lifted.
 * This gives you an opportunity to set up your data model, run jobs, or perform some special logic.
 *
 * For more information on bootstrapping your app, check out:
 * http://sailsjs.org/#/documentation/reference/sails.config/sails.config.bootstrap.html
 */

module.exports.bootstrap = function(cb) {

  // It's very important to trigger this callback method when you are finished
  // with the bootstrap!  (otherwise your server will never lift, since it's waiting on the bootstrap)

  stream.start();  

  cb();
};

stream.js

var Twitter = require('twitter');

var twitter = new Twitter({
  consumer_key: sails.config.secrets.twitter.consumer_key,
  consumer_secret: sails.config.secrets.twitter.consumer_secret,
  access_token_key: sails.config.secrets.twitter.access_token_key,
  access_token_secret: sails.config.secrets.twitter.access_token_secret
});

module.exports = {

  start: function(){

    console.log('start stream');

		twitter.stream('statuses/filter', {locations: '-122.75,36.8,-121.75,37.8', granularity: 'city'},  function(stream){
  		stream.on('data', function(tweet) {
    	console.log(tweet.text + ' - @' + tweet.user.screen_name);
    	console.log('------------------');

				Tweet.create(tweet, function(err, status){
					if(err){

						Tweet.publishCreate(err);
					}
					if(status){
						Tweet.publishCreate(status);

					}

				});
			});

  	});

  	stream.on('error', function(error) {
    	console.log(error);
  	});

  }

};