Java Tech & Tools | Deploying Java & Play Framework Apps to the Cloud | Sandeep Bhanot

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Java Tech & Tools | Deploying Java & Play Framework Apps to the Cloud | Sandeep Bhanot

  1. 1. Deploying Java and Play! Apps on Heroku Sandeep Bhanot @cloudysan
  2. 2. Safe Harbor Safe harbor statement under the Private Securities Litigation Reform Act of 1995: This presentation may contain forward-looking statements that involve risks, uncertainties, and assumptions. If any such uncertainties materialize or if any of the assumptions proves incorrect, the results of salesforce.com, inc. could differ materially from the results expressed or implied by the forward-looking statements we make. All statements other than statements of historical fact could be deemed forward-looking, including any projections of product or service availability, subscriber growth, earnings, revenues, or other financial items and any statements regarding strategies or plans of management for future operations, statements of belief, any statements concerning new, planned, or upgraded services or technology developments and customer contracts or use of our services. The risks and uncertainties referred to above include – but are not limited to – risks associated with developing and delivering new functionality for our service, new products and services, our new business model, our past operating losses, possible fluctuations in our operating results and rate of growth, interruptions or delays in our Web hosting, breach of our security measures, the outcome of intellectual property and other litigation, risks associated with possible mergers and acquisitions, the immature market in which we operate, our relatively limited operating history, our ability to expand, retain, and motivate our employees and manage our growth, new releases of our service and successful customer deployment, our limited history reselling non-salesforce.com products, and utilization and selling to larger enterprise customers. Further information on potential factors that could affect the financial results of salesforce.com, inc. is included in our annual report on Form 10-Q for the most recent fiscal quarter ended April 30, 2011. This documents and others containing important disclosures are available on the SEC Filings section of the Investor Information section of our Web site. Any unreleased services or features referenced in this or other presentations, press releases or public statements are not currently available and may not be delivered on time or at all. Customers who purchase our services should make the purchase decisions based upon features that are currently available. Salesforce.com, inc. assumes no obligation and does not intend to update these forward-looking statements.Proprietary & Confidential
  3. 3. Once upon a time…. Tim wanted to develop a Java app……
  4. 4. So he got to work….• Acquire and provision all the H/W (Servers, Load Balancers, Routers etc.)• Install, configure and tune the entire S/W stack (OS, Web/App Server, DB etc.)• Configure env. for Application services like Routing, Clustering, Load Balancing, DR, Caching, DB Replication etc ($$$)• Patch and upgrade the H/W and S/W stack Cost Agility
  5. 5. One day….Tim decided to try this ‘Cloud’ thingy……
  6. 6. So he tried an IAAS provider….• NO H/W to buy/install/configure!• Still has to configure and tune the entire S/W stack (OS, Web/App Server, DB etc.)• Still has to configure (and sometime code) env. for Application services like Scaling, Routing, Clustering, Load Balancing, DR, DB replication etc• Patch and upgrade the S/W stack Cost Agility
  7. 7. Finally….Tim heard of Heroku
  8. 8. When Tim met Heroku….• NO Servers• Managed S/W stack (OS, Web/App Server, DB etc.)• Application services like Routing, Load Balancing and DR built-in• Elastic scaling• git push heroku master Focus on your Code. Period. Cost Agility
  9. 9. Heroku = Polyglot Cloud Platform 402,550+ Apps Running on Heroku
  10. 10. $ heroku create –s cedar$ git push heroku master
  11. 11. Create more web processes:$ heroku scale web=2What processes are running:$ heroku ps
  12. 12. Check the logs:$ heroku logs
  13. 13. View releases:$ heroku releasesRollback:$ heroku rollback
  14. 14. Run a process:$ heroku run "your bash command"
  15. 15. Deploying web apps...Environment (Runtime, configuration, etc)Ingredients (Dependencies, app, services, etc)Process (Build, assemble, start, etc)Environment + Ingredients + Process = web 1!Environment + Ingredients + Process = web 2!
  16. 16. Externalize Environment Variables$ heroku configDATABASE_URL = postgres://blah:blah@ec2.compute-1.amazonaws.com/blahJAVA_OPTS = -Xmx384m -Xss256k -XX:+UseCompressedOopsMAVEN_OPTS = -Xmx384m -Xss256k -XX:+UseCompressedOopsPATH = .maven/bin:/usr/local/bin:/usr/bin:/binREDISTOGO_URL = redis://redistogo:1234asdf@angler.redistogo.com:9291/REPO = /app/.m2/repository
  17. 17. Ingredients defined (pom.xml)<dependency> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-webapp</artifactId> <version>${jetty.version}</version></dependency><dependency> <groupId>org.mortbay.jetty</groupId> <artifactId>jsp-2.1-glassfish</artifactId> <version>2.1.v20100127</version></dependency><dependency> <groupId>postgresql</groupId> <artifactId>postgresql</artifactId> <version>9.0-801.jdbc4</version></dependency>
  18. 18. Process defined (Maven + Procfile)web: sh target/bin/webapp
  19. 19. Dont Share-Something
  20. 20. Share-NothingMove state to the isolated & independent edges - UI state -> client - Permanent state -> external data stores
  21. 21. Deploy an app on Heroku1. Create a Java Web App2. Add a Procfile3. Commit to a git repo4. Create an app on Heroku5. “git push” to Heroku6. Scale and monitor on Heroku
  22. 22. Connect to a Database• Free shared PostgreSQL DB• Dedicated & managed PostgreSQL DB• Amazon RDS MySQL & Oracle• NoSQL Add-ons (Redis, MongoDB, etc)• Database.com• Or do your own thing
  23. 23. Transform DATABASE_URLHeroku:postgres://[username]:[password]@[server]/[db-name]JDBC:jdbc:postgresql://[server]/[db-name]?user=[username]&password=[password]Transform:dbUrl = dbUrl.replaceAll("postgres://(.*):(.*)@(.*)", "jdbc:postgresql://$3?user=$1&password=$2");
  24. 24. Create a Worker Process1. Create a process2. Update the Procfile3. Push to Heroku4. Scale the workers
  25. 25. Using a Heroku Add-on• Find an Add-on: http://addons.heroku.com• Activate the Add-on• Use the service• Push to Heroku
  26. 26. Play!• A Java framework for Web Applications• Non Servlet or JEE based• A full stack framework• Focuses on productivity and fun
  27. 27. Play! on Heroku1. Create Play app2. Add app to git repo3. Create app on Heroku4. Push app to Heroku
  28. 28. 750 free dyno hours per month per app
  29. 29. heroku.com/javagithub.com/heroku/java-workbook@cloudysan

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