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Easy-peasy OSGi Development with Bndtools - Neil Bartlett

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mfrancis

The document discusses simplifying OSGi development using Bndtools while addressing common pain points such as managing package imports and versioning. It emphasizes creating best practices for development and the integration of Bndtools with Maven for efficient bundle design and testing. The goal is to make OSGi development more enjoyable and productive.

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Easy-peasy OSGi Development with Bndtools Neil Bartlett Paremus Ltd 21 September 2011 OSGi Alliance Marketing © 2008-2010 . All1 Page COPYRIGHT © 2008-2011 OSGi Alliance. All Rights Reserved Rights Reserved
Good News Everyone! Hardly any slides!
My Mission • To mercilessly destroy sources of OSGi pain and bafflement. • Make it easy to do the right thing, and hard to do the wrong thing. • Don’t just talk Best Practices... create them.
Make OSGi Fun!
“OSGi development cannot be made [...] easy or productive” – Rod Johnson (emphasis added for comic effect)
Easy-peasy OSGi Development with Bndtools - Neil Bartlett
Bugbear #1 • Require-Bundle is evil • Import-Package is a nightmare to maintain
But... The Packages are RIGHT THERE!!! package org.example.auction.basic; import org.example.auction.AuctionService; import org.osgi.framework.Constants; import org.osgi.service.event.Event; import org.osgi.service.event.EventAdmin;
D.R.Y.
Bugbear #2 • The rules of versioning are not hard to understand, but... • Managing thousands of versioned packages is impossible • Therefore version only bundles, or ignore versioning entirely
Easy-peasy OSGi Development with Bndtools - Neil Bartlett
Bugbear #2 • Managing thousands of versioned packages is impossible... FOR HUMANS • Use the machine!
Pure API Bundle api 1.0.0
Service Provider api [1.0,1.1) api 1.0.0
Service Consumer api
Without API Bundle api [1.0,1.1) api 1.0.0 api
With API Bundle api 1.0.1 api [1.0,1.1) api 1.0.0 api
Oops! api 1.0.1 api 1.0.0 api
In-Container Testing OSGi Framework Bundles Under Test Auction Event ... Server Admin Test Bundles Test Test ... Bundle 1 Bundle 2 JUnit Runner
But I Use Maven! • Maven and Bndtools, sitting in a tree, k.i.s.s.i.n.g.
Bndtools: Maven: • Designing Bundles • Build dependencies • Instant Build/Run • Repeatable offline builds • Bundle Analysis • Reports

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Easy-peasy OSGi Development with Bndtools - Neil Bartlett

  • 1. Easy-peasy OSGi Development with Bndtools Neil Bartlett Paremus Ltd 21 September 2011 OSGi Alliance Marketing © 2008-2010 . All1 Page COPYRIGHT © 2008-2011 OSGi Alliance. All Rights Reserved Rights Reserved
  • 2. Good News Everyone! Hardly any slides!
  • 3. My Mission • To mercilessly destroy sources of OSGi pain and bafflement. • Make it easy to do the right thing, and hard to do the wrong thing. • Don’t just talk Best Practices... create them.
  • 5. “OSGi development cannot be made [...] easy or productive” – Rod Johnson (emphasis added for comic effect)
  • 7. Bugbear #1 • Require-Bundle is evil • Import-Package is a nightmare to maintain
  • 8. But... The Packages are RIGHT THERE!!! package org.example.auction.basic; import org.example.auction.AuctionService; import org.osgi.framework.Constants; import org.osgi.service.event.Event; import org.osgi.service.event.EventAdmin;
  • 10. Bugbear #2 • The rules of versioning are not hard to understand, but... • Managing thousands of versioned packages is impossible • Therefore version only bundles, or ignore versioning entirely
  • 12. Bugbear #2 • Managing thousands of versioned packages is impossible... FOR HUMANS • Use the machine!
  • 13. Pure API Bundle api 1.0.0
  • 14. Service Provider api [1.0,1.1) api 1.0.0
  • 16. Without API Bundle api [1.0,1.1) api 1.0.0 api
  • 17. With API Bundle api 1.0.1 api [1.0,1.1) api 1.0.0 api
  • 18. Oops! api 1.0.1 api 1.0.0 api
  • 19. In-Container Testing OSGi Framework Bundles Under Test Auction Event ... Server Admin Test Bundles Test Test ... Bundle 1 Bundle 2 JUnit Runner
  • 20. But I Use Maven! • Maven and Bndtools, sitting in a tree, k.i.s.s.i.n.g.
  • 21. Bndtools: Maven: • Designing Bundles • Build dependencies • Instant Build/Run • Repeatable offline builds • Bundle Analysis • Reports