Developing OSGi bundles is just too hard! That gnarly old manifest; listing all the imported packages (again!); writing all those XML files... who needs that kind of hassle? My goal when I began development of Bndtools was to change this picture drastically: to make it actually _easier_ to develop and test OSGi applications, composed of high quality reusable bundles, than it is to develop "traditional" non-modular Java applications. Now with the help of a growing community of contributors and brave alpha testers, that vision is beginning to come true. Bndtools is an Eclipse IDE for OSGi development, based on bnd. In this talk I will demonstrate the features of Bndtools that help to make it fun and easy to build bundles. I will also talk about: Declarative Services with Java annotations; OBR for release management and provisioning; and integration testing strategies.

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.

4. Make
OSGi
Fun!

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;

9. D.R.Y.

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

15. Service Consumer
api

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