gistfile1.js

var domain = require('domain');
var express = require('express');
var fs = require('fs');

module.exports = function(parent, options){

	var directory = options.directory || __dirname + '/../controllers';
	
	fs.readdirSync(directory).forEach(function(name){

    var obj = require(directory + '/' + name);
    var prefix = obj.prefix || '';
    var app = express();
    var handler;
    var method;
    var path;

    // generate routes based
    // on the exported methods
    for (var key in obj) {
     
		var route = key.match(/(GET|POST|PUT|PATCH|DELETE)\s(.*)?/i);
				
		if (route) {
			handler = obj[key];
			path = prefix + route[2];
			method = route[1].toLowerCase();
		  
			app[method](path, function (req, res) {
				var d = domain.create();
				d.add(req);
				d.add(res);
				d.on('error', function (err) {
				  
					try {
						res.writeHead(500);
						res.end('Error occurred, sorry.');
					} catch (er) {
						throw(er);
					}
				  
			  	});
			  	d.run(function(){
					handler.apply(obj, arguments);		
				});
        	});     
	  	}	
	}
	
    // mount the app
    parent.use(app);
	
  });
  
};