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Current State of Affairs in SOA Along with Migration Strategies and Methodologies

www.oasis-open.org. Current State of Affairs in SOA Along with Migration Strategies and Methodologies. John Harby. John Harby.

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Current State of Affairs in SOA Along with Migration Strategies and Methodologies

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  1. www.oasis-open.org Current State of Affairs in SOA Along with Migration Strategies and Methodologies John Harby

  2. John Harby John Harby is currently working with MIRO Technologies, a global aerospace defense contractor headquartered in San Diego. He specializes in the SOA and middleware areas. He is a member of several OASIS Technical Committees and is also on several JSR expert groups. He was co-author of The Middleware Company SOA Blueprints initiative. He has previously worked in product development for vendors including Oracle, BEA Systems and was a Sr. Architect in the HP Web Services (e-speak) lab. His first experience in SOA was in the mid-90's developing systems for U.S. Intelligence using CORBA/C++

  3. PGFSOA • Practical Guide to Federal SOA • Are using OASIS standards such as the SOA Reference Model • <hint>Still accepting volunteers</hint>

  4. The Standards have Arrived • OASIS SOA RM, SCA, SDO • WS-Transaction • WS-Addressing • Etc.

  5. Product Maturity • Orchestration – IBM, BEA, Oracle, et al are maturing • Registries, ESBs, etc. also no longer new • Many support tooling now exists, e.g. management tools

  6. Open Source Contributions • JBoss – jBPM, ESB • Mule ESB • ServiceMix • Synapse

  7. External to Technology • Governance • Methodologies • Management

  8. REST Approach • Further decoupling through abstraction of contract • Lack of declarative standardization • Can one use REST within SOA?

  9. Practices, What Works? • Choose pilots carefully • Governance always comes first • Vendor selection matters even more

  10. Practices, What Works? • SOA as a pattern • Migration strategies • Platform integration

  11. Novel approach – AOP/SOA • Services can be woven rather than orchestrated. • Especially useful for lightweight services with many join points. • Examples, logging, properties, etc. The Jaffa framework employs some of these strategies.

  12. REST – Friend or Foe • REST exhibits more simplicity than the other alternatives • REST offers further decoupling than SOAP/WSDL/etc. • REST potentially violates the SOA contract requirements

  13. ROA vs. SOA • My opinion is to strive for a blend • OASIS SOA-RM: “A contract … represents an agreement by two or more parties” • Does the level of abstraction of the contract really matter?

  14. Why does this matter? • Adds capability to the SOA • Further enablement of end-end enterprise architecture

  15. Platform migration • Seek a generalized methodology • Migration strategies are available • Initially target the “low hanging fruit”

  16. SOA Migration Path

  17. SOA Migration Path

  18. SOA Migration Path

  19. Some Interesting Links • Web Methods SOA Master Class:http://www.soamasterclass.com/index.php?option=com_content&task=view&id=74&Itemid=88888964 • Estimate SOA costs:http://weblog.infoworld.com/realworldsoa/archives/2006/11/how_much_will_y.html • REST FAQ:http://rest.blueoxen.net/cgi-bin/wiki.pl?RestFaq • Two IBM SOA success stories:http://www.soainaction.com/blog/2007/03/post_4.php • Web Services Standards poster:http://www.innoq.com/soa/ws-standards/poster/

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