server.js

'use strict';

module.exports = function (params, callback) {
  require('config/init')();
  require('config/newrelic');
  const config = require('config/config');
  const log = require('config/log')(module);
  const socket = require('app/lib/middleware/socket-io');

  // require mongoose (connect to DB)
  require('config/mongoose');

  require('config/consumer');

  /**
   * Main application entry file.
   * Please note that the order of loading is important.
   */
  const app = require('config/express')();

  // Bootstrap script
  log.info('Running bootstrap script...');

  require('config/bootstrap')(app, (err) => {
    if (err) {
      log.error(`Bootstrap script failed with error: ${err.message}`);
      callback && callback(err);
      return;
    }

    log.info('Bootstrap script completed');
    const http = require('http').createServer(app);
    const io = require('socket.io')(http, { cookie: false });
    const redisAdapter = require('socket.io-redis');
    io.adapter(redisAdapter({
      host: config.redis.host,
      port: config.redis.port,
      password: config.redis.password,
    }));
    io.set('transports', ['websocket']);
    io.timeStamp = new Date();
    socket.initSocketIo(io, app);
    // Start the app by listening on <port>
    http.listen(config.port);
    app.io = io;

    // Logging initialization
    log.info(`"${config.app.title}" application started on port ${config.port}`);
    callback && callback(null, app);
  });

  process.on('uncaughtException', (err) => {
    log.error(`Unhandled exception raised: ${err}`);
    callback && callback(err);
  });
};