Express boilerplate, router files

indes.js

var express = require('express');
var router = express.Router();

/* GET home page. */
router.get('/', function(req, res, next) {
  res.render('index', { title: 'Express' });
});

module.exports = router;

users.js

'use strict';

var mysql = require('mysql');
var express = require('express');
var router = express.Router();

/**
 * Returns connection to the mysql database
 *
 * @return {Object}  mysql connection
 */
function getConnection () {
  var connection = mysql.createConnection({
    host     : 'localhost',
    database : 'loadtest',
    user     : 'root',
    password : 'szapo123'
  });
  return connection;
}

function getUsers (cb) {
    var connection = getConnection();
    connection.connect();

    var sqlQuery = 'SELECT * FROM testdata';

    connection.query(sqlQuery, function(err, rows, fields) {
      if (err) {
        cb(err);
      } else {
        cb(null, rows);
      }
    });

    connection.end();
  }

/* GET users listing. */
router.get('/', function(req, res, next) {
  getUsers(function (err, data) {
    if (err) {
      next(new Error('DB error: ' + err));
    }
    else {
      res.json(data);
    }
  });
});

router.get('/some', function(req, res, next) {
  res.send('kuku');
});

module.exports = router;