OSGi DevCon US 2010 Review

OSGi DevCon 2010 Review Neil Bartlett

With Thanks...

Themes Enterprise OSGi Sun, Oracle and Jigsaw Tooling Future of App Servers Cloud Computing

OSGi Enterprise Specification Released

Enterprise Release JNDI Blueprint JDBC Remote Services JMX Remote Services Admin JPA SCA JTA Web Container

Next Release...? JCA OBR Asynchronous Command Shell Services Config Admin JMS extensions META-INF/services Multiple Extenders JAAS JPA weaving

Sun/Oracle Keynote

Sun/Oracle Keynote Re-iterated commitment to OSGi :-) Re-iterated commitment to Jigsaw :-( First public mention of “Java Module System Framework”

a.k.a. Qwylt Image Credit: SXC.hu

Qwylt APIs for interacting with modules SPIs for building module systems Platform for sharing classes between module systems

Pros Seems to offer interop between OSGi and Jigsaw at runtime Oracle claim to have implemented 90% of OSGi on Qwylt (“Lyra”), based on Felix code.

Cons No common module format Library authors targeting both module systems will have to compile, build and test twice.

Getting Involved Qwylt discussions likely to be held within a resurrected JSR 277 Though this requires resurrecting the JCP itself...

OSGi Cloud Computing Workshop

Tycho Moving to Eclipse

Tycho PDE gets a proper build system “Manifest first” vs “POM first” Already used by EGit & others

Interesting Talks

OSGi Best and Worst Practices

OSGi Best and Worst... Paul Vanderlei, Martin Lippert, Jeff McAffer, Chris Aniszczyk

OSGi Best and Worst... Don’t Program OSGi (use DS instead!) Use Import-Package (not Require- Bundle!) Mind your versions

Modular Architecture

Modular Architecture Kirk Knoernschild, Neil Bartlett Tutorial format: high level architecture from Kirk, low level details from me Focus on DS and simplicity seemed to go down well

Feedback “This presentation epitomises everyone [sic] that is wrong with software architecture. Nonesense [sic]” – Anonymous

OSGi Shells

OSGi Shells Robert Dunne (Paremus) Current situation is annoying for writers of tutorials & other docs Existing shells are underpowered RFC 147 describes the new standard shell, GoGo is a prototype

Paremus Nimble Shell and provisioning system Understands service dependencies, not just imports/requires. Not open source, but free to use (renewable licence)

Future of Application Servers Panel

Future of App Servers Host: John Rymer (Forrester Research) Panelists: Graham Charters (IBM), Glyn Normington (SpringSource), Greg Wilkins (Mortbay/Jetty), Oracle guy, JBoss guy.

Challenges Cloud deployment Reduced footprint Modularity and “profiles”

Memorable Quotes “Profiles are Rubbish!” – Greg Wilkins, Mortbay

Memorable Quotes Panelists asked for 3 core focus for future of their product

Graham Charters (IBM) “Enabling the OSGi development model in the enterprise...” “Enabling the OSGi development model in the enterprise...” and “Enabling the OSGi development model in the enterprise...”

ScalaModules

ScalaModules A DSL to ease development with OSGi services Complements DS, Blueprint etc Gives access to full power of low-level APIs... but much easier & safer to use.

ScalaModules Size of the core Scala library was discussed: 4Mb Clearly creates a barrier to adoption of Scala Needs to be modularised!

OSGi Cloud Workshop

Battle Of The “Cloud Picture” Slides

Image Credit: NASA

OSGi Cloud Workshop Lots of participants! Key Question: What needs to be specified, vs “value added” features that vendors may implement? Likelihood of a new “Cloud Expert Group” in the near future?

OSGi DevCon US 2010 Review

by mfrancis on May 05, 2010

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