app.js

var express = require('express');
var path = require('path')
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var minify = require('express-minify');
var compression = require('compression');

var routes = require('./routes/index');
var cache = require('./routes/cache');

/**
 * Die when docker asks us to
 */
process.on('SIGINT', function() {
    process.exit();
});

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

//app.set('subdomain offset', 1);

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
logger.format('dev', function developmentFormatLine (tokens, req, res) {
  // get the status code if response written
  var status = res._header
    ? res.statusCode
    : undefined

  // get status color
  var color = status >= 500 ? 31 // red
    : status >= 400 ? 33 // yellow
    : status >= 300 ? 36 // cyan
    : status >= 200 ? 32 // green
    : 0 // no color

  // get colored function
  var fn = developmentFormatLine[color]

  if (!fn) {
    // compile
    fn = developmentFormatLine[color] = logger.compile('\x1b[0m:method :hostname:url \x1b[' +
      color + 'm:status \x1b[0m:response-time ms - :res[content-length]\x1b[0m')
  }

  return fn(tokens, req, res)
})

logger.token('hostname', function getUrlToken (req) {
  return req.hostname
})


app.set('trust proxy', 'loopback');
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(compression());
app.use(minify());
app.use('/static', express.static(path.join(__dirname, 'public')));
app.use('/cache', express.static(path.join(__dirname, 'cache')));

app.use('/cache', cache);
app.use('/', routes);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;