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Getting Started with Eclipse RT

Getting Started with Eclipse RT. Shaun Smith Hugues Malphettes Greg Wilkins Doug Clarke . About Us. Hugues Malphettes Software engineer at Intalio Based in the Bay Area. Eclipse BPMN original committer Jetty and Orbit committer. Agenda. JPA in OSGi with EclipseLink

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Getting Started with Eclipse RT

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  1. Getting Started with Eclipse RT Shaun Smith Hugues Malphettes Greg Wilkins Doug Clarke

  2. About Us • Hugues Malphettes • Software engineer at Intalio • Based in the Bay Area. • Eclipse BPMN original committer • Jetty and Orbit committer.

  3. Agenda JPA in OSGi with EclipseLink Web-applications in OSGi with Jetty Show-down: JSF backed by JPA and run with Jetty purely with OSGi bundles.

  4. Part I: JPA in OSGi with EclipseLink Shaun's slides

  5. Part II: Web-applications in OSGi with Jetty Hugues Malphettes hmalphettes@intalio.com Greg Wilkins gregw@webtide.com

  6. Jetty-OSGi: why Jetty Architecture Application Server? Software Component? Eclipse plugins are great: Development environment Run / Debug in place Complexity scales thanks to OSGi Back to J2EE? Asked to build a set of well integrated web-applications Required to support existing web-applications

  7. Agenda: Jetty OSGi Web-Bundle: presentation and first demo Runtime environment Jetty-OSGi: Architecture Debugging a runtimeSlides and samples:http://www.intalio.org/public/maven2/org/intalio/osgi/eclipse-con/

  8. Web-Bundle: presentation OSGi's RFC66 Bundle's internals coincide with a WAR/WEB-INF /web.xml /lib /classesindex.html… And with an OSGi manifest:/META-INF/MANIFEST.MF New header: WebContext-Path: /theContextPath

  9. Jetty-OSGi Bootstrap jetty from an OSGi container Support for web-bundles RFC-66 style Support legacy J2EE applications

  10. Web-Bundle: fast track Eclipse-3.6M6 PDE Install Jetty SDK: http://download.eclipse.org/jetty/nightly/jetty7/ Make a new OSGi project

  11. Web-Bundle: fast track Choose the Plugin Template: “RFC66”

  12. Web-Bundle: fast track Investigate the structure of the bundle and the headers in the MANIFEST.MF

  13. Web-Bundle: fast track Right-click on the project and choose “Run As.../Jetty on OSGi.”

  14. Web-Bundle:fast track

  15. Web-Bundle: Fast Track Run / debug in place just like an eclipse plugin Hint: include the entire target platform to access all sources

  16. Web-Bundle: the SDK is optional The SDK only helps with The project template The launch configuration When the SDK is not in place: org.eclipse.jetty.osgi.boot should be set to start -Djetty.home=path/to/jetty/home

  17. Web-Bundle: Target Platform Use a target platform instead of the bundles defined in the eclipse installation Unzip jetty-osgi-min.zip Import the jettyhome-min project into the workspace

  18. Web-Bundle: Target Platform Investigate the default jetty-home setup. The minimum target-platform consists ofjetty's jars, the servlet jar and the osgi jar. Run the web-bundle from PDE Using a standard OSGi launcher The web-bundle is started by default

  19. Web-Bundle: Launch Configuration Jetty-OSGi SDK provides some additional UI

  20. Runtime Export the web-bundle with the sources “Deploy” both the bundle and the source in the runtime:copy them in the plugins folder

  21. Runtime Start on the command line: ./start.sh Try the runtime. 404. Type in the OSGi console “ss” Start the web-bundle if it is not Active.

  22. Runtime Use the OSGi console and type 'services' look at the deployed web-app

  23. Round trip back to PDE Back to PDE. Delete or rename the web-bundle. Import as project with sources the testbundle and org.eclipse.osgi

  24. Round trip back to PDE Show the BundleLoader and put a system error there when the servlet is loaded.

  25. Jetty OSGi: Architecture From J2EE to OSGi Supporting J2EE apps

  26. Traditional J2EE webapp container Hierarchical classloader Each web-app lives in a safe silo decoupled from one other start.jar: bootstrap Shared libraries: lib/ext ... Web-application WEB-INF/lib WEB-INF/classes • Communication between webapps is hard • Share libraries with everyone or no one Web-application #2

  27. Jetty Running inside OSGi Bootstrap Jetty from OSGi Support the Web-Bundles via the Web-Extender OSGI container Jetty bootstrapper Jetty bundles & dependencies Web-extender Web-Bundle

  28. Web-Bundles OSGi benefits: Shared libraries Webapp starting order: Web-Bundle-3 starts before Web-Bundle-2 Logging Web-Bundle 1 Shared-A JPA Web-Bundle 2 Shared B Web-Bundle 3

  29. Web-Bundle deployment Similar to the HttpService: bundleContext.register(ContextHandler.class.getName, …)a service tracker will deploy the corresponding Web-app Web-Bundle support via an extender:A BundleListener registers the ContextHandler service to deploy Web-Bundles. Examples: Custom service tracker to monitor webapps deployment Multiple webapps in a bunlde Custom path to the base resources for a webapp

  30. Jetty in OSGi: supporting J2EE features Bootstrap Jetty from OSGi Setup the J2EE classloaders and traditional web-app deployers Setup the context-classloader during the execution of a webapp OSGI container Jetty bundles Jetty bootstrapper Optional Bundles: JSP, JSF, Central Logging Legacy shared libraries: lib/ext Legacy Web-application WEB-INF/lib WEB-INF/classes

  31. Jetty in OSGi: complete picture OSGI container Jetty bundles Jetty bootstrap Optional Bundles: JSP, JSF, Central Logging Legacy shared libraries: lib/ext Web-Bundle Legacy Web-application WEB-INF/lib WEB-INF/classes

  32. OSGi and J2EE OSGi bundle in PDE Execute in place Debug in place Thousands of plugins, no duplication Tight integration OSGi services: direct access to the objects Encapsulation Libraries and services provided by the platform vendor • J2EE • Build, deploy, execute • Remote debug • 100s of libraries often duplicated • Loosely coupled silos • Web-apps send messages to on another or use EJB Beans • Static layers confined by a hierarchical class-loader • Libraries and services provided by the app developer.

  33. Jetty-OSGi default runtime Jetty-OSGi runtime package Similar to a standard jetty distribution Support for all the traditional J2EE features: Shared libraries Legacy J2EE webapps Central logging with slf4j and logback Jetty – JNDI, Policies... JSP-2.1 JSF: Sun's MyFaces (or Apache MyFaces) Examples: Jasig's CAS (spring web-flow), active-MQ's console ...

  34. Part III: JSF webapp on Jetty with a JPA model with EclipseLink: 100% OSGi Demo

  35. Next steps Manage multiple instances of jetty Contribute JSP and other dependencies to Orbit Refactor the jetty features Support for servlet-3 features: anotations etc Make sure Gemini can use jetty Work on tycho to build those web-bundles What would you like to see?

  36. Q & A You can reach us on IRC@Freenode #jetty Thank you!

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