old_contents: var log4js = require('log4js');
  var logger = log4js.getLogger();
  
  var express = require('express');
  var router = express.Router();
  var mongo = require('mongodb');
  var mongoClient = mongo.MongoClient;
  var MONGO_URL = process.env.OPENSHIFT_MONGODB_DB_URL || 'mongodb://127.0.0.1/rikitraki';
  
  mongoClient.connect(MONGO_URL, function(err, db) {
  	// if(err) throw err;
  	if (err) {
  		logger.error('cannot connect to database');
  	}
  
  	router.use(function (req, res, next) {
  		// Set up CORS headers
  		res.header("Access-Control-Allow-Origin", "*");
    		res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  		if (err) {
  			logger.error('500 - cannot connect to database');
  			res.status(500).send({error: 'DBError', description: 'cannot connect to database'});
  		} else {
  			next();
  		}
  	});
  
  	// List of api resources below
  	require('./tracks')(router, db);
  	// require('./users')(router, db); // We will deal with users later
  });
  
  module.exports = router;
new_contents: var log4js = require('log4js');
  var logger = log4js.getLogger();
  
  var express = require('express');
  var router = express.Router();
  var mongo = require('mongodb');
  var mongoClient = mongo.MongoClient;
  var MONGO_URL = process.env.OPENSHIFT_MONGODB_DB_URL ? (process.env.OPENSHIFT_MONGODB_DB_URL + '/rikitrakiws') : 'mongodb://127.0.0.1/rikitraki';
  
  mongoClient.connect(MONGO_URL, function(err, db) {
  	// if(err) throw err;
  	if (err) {
  		logger.error('cannot connect to database');
  	}
  
  	router.use(function (req, res, next) {
  		// Set up CORS headers
  		res.header("Access-Control-Allow-Origin", "*");
    		res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  		if (err) {
  			logger.error('500 - cannot connect to database');
  			res.status(500).send({error: 'DBError', description: 'cannot connect to database'});
  		} else {
  			next();
  		}
  	});
  
  	// List of api resources below
  	require('./tracks')(router, db);
  	// require('./users')(router, db); // We will deal with users later
  });
  
  module.exports = router;
subject: Fix mongodb db name