Uber Heroku Workshop

workshop.md

Running Java, Play! & Scala Apps on the Cloud Workshop

Goals

• Deploy a Spring + Tomcat Java app. Make changes and redeploy.
• Heroku Basics: Logging, Scaling, Configuring, Collaborating, Extending
• Deploy Play Framework on Heroku

Prerequisites

• Heroku Account

• Heroku Toolbelt

• Either:

  • Eclipse with EGit & M2E Plugins

• Or:

  • Command Line Git
  • Maven 3.0.4

• Play 2.0.1

Java on Heroku

1. Go to: java.heroku.com
2. Clone the Spring + Tomcat app
3. Test out the new app
4. Follow the instructions on the app's index page to copy the app to your local machine
5. Make a change
6. Test the change locally
7. Push the change

Heroku Basics

• Logging

    heroku logs -t
  

• Scaling

    heroku scale web=2
  

• Configuring

    heroku config:add FOO=bar
    heroku config
  

• Collaborating

    heroku sharing:add jw+demo@heroku.com
  

• Extending with Heroku Add-ons

    heroku addons:add papertrail
  

Play on Heroku

1. Create a new Play app:

    play new foo
   

2. Test the app locally:

    cd foo
    play ~run
   

   Open: http://localhost:9000

3. Change the app/views/index.scala.html file

4. Test the change locally

5. Create a new git repo, add the files, commit:

    git init
    git add .
    git commit -m init
   

6. Create a new app on Heroku:

    heroku create -s cedar
   

7. Deploy the app:

    git push heroku master
   

8. Test the app on Heroku:

    heroku open
   

Learn More

Heroku Dev Center