tjh-express/demo/app.js

TogetherJS Hub express module

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 TJH = require('../index');

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

var app = express();

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

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

// togetherJS hub routes
app.get('/status', function (req, res, next) {
  res.end('OK');
});

app.get('/load', function (req, res, next) {
  var load = TJH.getLoad();

  res.header('Content-Type', 'text/plain');

  res.end("OK " + load.connections + " connections " +
    load.sessions + " sessions; " +
    load.solo + " are single-user and " +
    (load.sessions - load.solo) + " active sessions");
});

app.get('/findroom', function (req, res, next) {
  var prefix = req.query.prefix;
  var max = parseInt(req.query.max, 10);

  res.header('Content-Type', 'application/json');
  res.header("Access-Control-Allow-Origin", "*");

  if (! (prefix && max)) {
    return res.end("You must include a valid prefix=CHARS&max=NUM portion of the URL");
  }
  if (prefix.search(/[^a-zA-Z0-9]/) != -1) {
    return res.end("Invalid prefix");
  }

  TJH.findRoom(prefix, max, res);
});

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

// 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;