app.js

var express = require('express');
var mysql = require('mysql');
var bodyParser = require('body-parser');
var methodOverride = require('method-override');
var morgan = require('morgan');
var cors = require('cors');
var health = require('express-ping');
var connection = require('express-myconnection');
var json2csv = require('nice-json2csv');

var config = require('./config');
var middleware = require('./source/middleware');
var logger = require('./source/utils/logger');
var auth = require('./source/utils/auth');

var app = express();
var env = process.env.NODE_ENV || 'development';
var port = process.env.PORT || 3010;

morgan.format('custom', ':method :url :req[content-type] :req[content-length] HTTP/:http-version :status :res[content-length] - :response-time ms');
app.use(morgan('custom', {stream: logger.stream()}));

app.use(health.ping('/'));
app.use(connection(mysql, config.mysql.connection, 'request'));
app.use(middleware.db.mysql(config.mysql));
app.use(middleware.db.mongo(config.mongo));
app.use(bodyParser.json());
app.use(methodOverride());
app.use(json2csv.expressDecorator);
app.use(cors());

auth(app, ['/api']);

require('./source/api')(app);
app.use(middleware.errors());

app.listen(port);

errors.js

var util = require('util');
var logger = require('../utils/logger');

function errors(err, req, res, next) {
	function includeStack(stack) {
		return process.env.NODE_ENV === 'production' ? [] : stack;
	}

	return function (err, req, res, next) {
		err = util.isError(err) ? {message: err.message, stack: includeStack(err.stack)} : err;
		if (!err.status) {
			err.status = 500;
		}

		logger.error(err);

		res.status(err.status).json(err);
	};
}

module.exports = errors;