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Ember + Node + Express + EJS + Elastic Beanstalk

Here's the set of steps I follow to test out Ember using Node / Express in Elastic Beanstalk. For reference, here's a test project I've deployed to AWS EB using these steps.

Start a new Ember project, and add in the Express dependencies

    npm install -g ember-cli
    ember new my-awesome-app
    cd my-awesome-app
    npm install --save express
    npm install --save ejs
    npm install --save path
    npm install --save debug
    mkdir bin
    mkdir views

create a file named www inside bin folder 
#!/usr/bin/env node

var app = require('../index');
var debug = require('debug')('autocare:server');
var http = require('http');

var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);

var server = http.createServer(app);
server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

function normalizePort(val) {
  var port = parseInt(val, 10);

  if (isNaN(port)) {
    // named pipe
    return val;
  }

  if (port >= 0) {
    // port number
    return port;
  }

  return false;
}

function onError(error) {
  if (error.syscall !== 'listen') {
    throw error;
  }

  var bind = typeof port === 'string'
    ? 'Pipe ' + port
    : 'Port ' + port;

  switch (error.code) {
    case 'EACCES':
      console.error(bind + ' requires elevated privileges');
      process.exit(1);
      break;
    case 'EADDRINUSE':
      console.error(bind + ' is already in use');
      process.exit(1);
      break;
    default:
      throw error;
  }
}

function onListening() {
  var addr = server.address();
  var bind = typeof addr === 'string'
    ? 'pipe ' + addr
    : 'port ' + addr.port;
  debug('Listening on ' + bind);
}
Grant www execute permissions 

    chmod +x www

Change package.json start script to execute the www script, so Elastic Beanstalk app will runn the Express Server, instead of the Ember server

    "scripts": {
        "build": "ember build",
        "start": "node ./bin/www",
        "test": "ember test"
  }

Create index.js in root folder, that will startup the Express server, and route traffic from '/' to the ember page at /public/ember-app/index.html (note: I used /public/ember-app instead of /public/app because /public/app was breaking the ember build).

var express = require('express');
var path = path = require('path');
var ejs = require('ejs');

var app = express();

app.use(express.static(path.join(__dirname, 'public/ember-app')));
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.get("/", function(req, res) {
 res.sendFile("index.html", { root: "./public/ember-app/" });
});

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
  });
 });
}

app.use(function(err, req, res, next) {
 res.status(err.status || 500);
 res.render('error', {
  message: err.message,
  error: {}
 });
});

module.exports = app;
Create error.ejs template in views folder 

<!DOCTYPE html>
<html>
 <head>
  <title>Error</title>
 </head>
 <body>
  <h1>An Error Has Occurred&bt;/h1>
  <p>
   <%= message %>
  </p>
 </body>
</html>
Build Ember App 

    ember build --environment production --output-path ./public/ember-app

Commit / Push to GitHub 

    git add // (add files)
    git commit -m "setting up express"
    git push

Deploy to Elastic Beanstalk 

    eb deploy

Comments

  1. SankarDecember 7, 2019 at 10:35 AM

    Great Article
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  3. GuestMarch 27, 2024 at 6:29 AM

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