A description of the use case for Breloque: implementing services versioning for OpenESB. The presentation was given at the OpenESB Summit in Los Angeles in May 2011.

1. IMPLEMENTING SERVICES VERSIONING
IN OPENESB USING BRELOQUE
Kir Sorokin, kir.sorokin@integrated-apps.com
http://integrated-apps.com/products/breloque

2. Disclaimer
● Work in progress
● Custom development
● No concrete demonstration
© 2010 IntegratedApps 2

3. Basis
● No versioning support in OpenESB
● Too costly to implement in the platform
● Need a workaround
© 2010 IntegratedApps 3

4. Concepts
● Two types of changes:
● major (interface changes, clients need to be updated)
● minor (no interface changes, update is transparent)
● Major — deploy alongside older versions
● Minor — deploy over older versions
© 2010 IntegratedApps 4

5. Problems
● Minor: running instances
● Major: endpoints conflicts
● Both: changes to the source code
● Both: invoking an older instance
© 2010 IntegratedApps 5

6. Solution
● Same deployment scheme for major and minor changes
● Breloque for late binding (also on clients)
● Breloque for back-links
● Registry plug-in for source manipulation, deployment
© 2010 IntegratedApps 6

7. DEMONSTRATION

8. THAT'S IT. THANKS! QUESTIONS?
Kir Sorokin, kir.sorokin@integrated-apps.com
http://integrated-apps.com/products/breloque