Bndtools 101 provides an introduction to using Bndtools for OSGi development. It demonstrates how to create a simple blog application with a provider and consumer module in under an hour. The document outlines the steps to define an API, create a provider module that implements it, run the application, create a consumer module that uses the API, and evolve the API. It promotes Bndtools as a one-stop tool for OSGi development that handles tasks like building, resolving, running, and packaging modules.

1. Bndtools 101
Getting Started with OSGi Development

2. – Many Java Developers
“Why Use OSGi?”

3. OSGi is From the Future
• Microservices since 1998
• Continuous delivery since
1999
• Software component
repositories since 2003
• Runtime resolve/assemble
since 2005
image credit: Sam Howzit (flickr.com/photos/aloha75/)

4. Why Aren’t We All Using It?
• Steep Learning Curve…?
• Complexity…?
• Weak Tools…?

5. Famous Dude
• “Things should be as simple
as possible, but no simpler”

6. Actually He Said…
• “It can scarcely be denied
that the supreme goal of all
theory is to make the
irreducible basic elements as
simple and as few as possible
without having to surrender
the adequate representation
of a single datum of
experience.”

7. Inherent vs Accidental
Complexity

8. OSGi Really Is “As
Simple as Possible”
Holy Sh*t We
Needed Better
Tools!
image credit: Uwe Schwarzbach (flickr.com/photos/uwebkk/)

9. Bndtools
“One tool to bnd them all”

10. 0. Initial Setup
• Create Workspace Config
• Setup Repository
image credit: Germán Poo-Caamaño (flickr.com/photos/gpoo/)

11. 1. Define API
• Blog
• BlogListener
• Baseline
• Release
image credit: Jessica Spengler (flickr.com/photos/wordridden/)

12. 2. Create Provider
• Add blog.api to build path.
• Add MongoDB client from
JPM.

13. 3. Run It!
• Add blog.provider to Run
Requirements
• Resolve and Run
image credit: Dru Bloomfield (flickr.com/photos/athomeinscottsdale/)

14. 4. Create Consumer
• Add blog.api and servlet 2.5
API to build path
• Publish Servlet service
• Add service property: alias=/
blog
• Add HTTP whiteboard & event
admin to Run Requirements
image credit: epSos .de (flickr.com/photos/epsos/)

15. 5. Evolve the API
• Add deleteEntry() method to
Blog
• Fix the baselining errors
• Release

16. 6. Package and Ship It
• Export as standalone JAR
• Run from bash
image credit: Glyn Lowe Photoworks. (flickr.com/photos/glynlowe/)

17. What Did We Make?
Blog
Provider
Blog
Consumer
(REST)
Jetty
HTTP
Whiteboard
Blog
Servlet
HttpService

18. What Did We Make?
• A modular, dynamically assembled, type-safe,
versioned microservice.
• … in 45 minutes (give or take)

19. Over to You
• Bndtools 2.4 M1 Just
Released: bndtools.org
• Demo Sources: github.com/
bndtools/101
NEW

20. Thanks!
The Bndtools Team,
Working Hard(ly)