Instant OSGi Starter

Table of Contents

Instant OSGi Starter

Credits

About the authors

About the reviewer

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1. Instant OSGi Starter

So, what is OSGi?

What kind of things can you do with OSGi?

How can you use OSGi within your existing applications?

Installation

Step 1 – what do I need?

Step 2 – downloading an OSGi core

Step 3 – starting up an OSGi core directly

Step 4 – downloading Apache Karaf

What does using Apache Karaf and Maven provide us with?

Step 5 – starting Apache Karaf

Step 6 – obtaining the BND tool (Maven Bundle plugin)

Step 7 – obtaining Blueprint

Step 8 – obtaining Pax Exam

And that's it!!

Quick start – your first OSGi bundles

Step 1 – what do I need?

Step 2 – analyzing the producer

Step 3 – analyzing the consumer

Step 4 – testing

Top five features you'll want to know about

1 – OSGi headers

Bundle-SymbolicName

Bundle-Version

Major

Minor

Micro

Qualifier

Import-Package

Inclusive Minimum, Exclusive Maximum:

Inclusive Minimum, Inclusive Maximum:

Exclusive Minimum, Exclusive Maximum:

Exclusive Minimum, Inclusive Maximum:

Inclusive Minimum:

Export-Package

2 – OSGi life cycle

Installed

Resolved

Starting

Active

Updating

Stopping

Uninstalled

BundleActivator

3 – OSGi core services

Service Hooks

4 – OSGi Compendium Services

Blueprint Container

Configuration Admin

5 – OSGI and modular patterns

Whiteboard pattern

Idea

Implementation

Common uses

Extender pattern

Idea

Implementation

Common uses

People and places you should get to know

Official sites

Articles and tutorials

Community

Blogs

Twitter

Instant OSGi Starter

Instant OSGi Starter

Copyright © 2013 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the authors, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: January 2013

Production Reference: 1170113

Published by Packt Publishing Ltd.

Livery Place

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Birmingham B3 2PB, UK.

ISBN 978-1-84951-992-2

www.packtpub.com

Credits

Authors

Johan Edstrom

Jamie Goodyear

Reviewer

Tomek Lipski

Acquisition Editor

Joanna Finchen

Commissioning Editor

Meeta Rajani

Technical Editors

Ameya Sawant

Vrinda Amberkar

Copy Editor

Alfida Paiva

Project Coordinator

Michelle Quadros

Proofreader

Maria Gould

Graphics

Aditi Gajjar

Production Coordinator

Prachali Bhiwandkar

Cover Work

Prachali Bhiwandkar

Cover Image

Conidon Miranda

About the authors

Johan Edstrom is an open source software evangelist, Apache developer, and a seasoned architect working with Savoir Technologies. He has created Java architectures for large and scalable, high transaction monitoring, financial, and open source systems. He