The open source wave has drastically changed how to build software solutions. Instead of relying on one proprietary product, several ones are now available. This profusion allows creating highly flexible solutions where components can be replaced at any time by another ones. So, to build software solutions, architects now juggle with hundreds of projects with different interaction model. This talk explores the creation of a mobile solution where several open source components are used. Those components come from different OSS communities such as Apache, Google Android, OW2 and Sourceforge. The talk focuses on the different community models and the different interactions.

1. OSS & Communities
Dr. Clement Escoffier, akquinet A.G.

2. What about me ?
 Solution Architect in the Modular and Mobile CC
 Apache Software Foundation
 PMC Apache Felix, Apache Ace
 Apache Felix iPOJO project leader
 OW2
 Chameleon project leader
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3. akquinet
akquinet AG
akquinet €1300k SE
business consulting
GmbH €60k SE
International Microsoft / .NET Outsourcing JAVA / SAP Associate Partners
akquinet akquinet akquinet akquinet BMC GMBH
IBS dynamic solutions outsourcing it-agile
cimt AG
GmbH €250k SE GmbH €300k SE gGmbH €250k SE GmbH €100k SE
DoubleC GmbH
akquinet akquinet akquinet akquinet
IBS Brüssel SLS logistics system integration tech@spree Groupconcept GmbH
GmbH €40k SE GmbH €250k SE GmbH €125k SE GmbH €300k SE
infodesign GmbH
akquinet akquinet
panoptimum GmbH
eurosoft Sp. z o.o. enterprise solutions
€100k SE GmbH €80k SE Portal Systems GmbH
HKS PortivITy GmbH
GmbH €75k SE
w//Center GmbH
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4. Modular and Mobile Solutions
 Competence Center focusing on
 Modular Systems
 Modularization expertise
 OSGi-based
 Sophisticated, Large scale, Distributed systems
 Mobile Solutions
 In the large
 Mobiledevices, Interactions middleware, Server-side …
 M2M, B2B
 Open Technologies
 OSGi (Apache Felix, Apace Ace, OW2 Chameleon, Apache Sling…)
 Android
 Java EE (JBOSS, OW2 JOnAS)
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5. Solution Architecture
5 OSS & Communities

6. Solution Architecture
Business-Code
Architecture
Development
Infrastructure
Runtime
Infrastructure
6 OSS & Communities

7. Solution Architecture
7 OSS & Communities

8. But what about open source ?
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9. What has changed Open Source ?
Before After
The
Almost
All-In-One
Solution
Only compatible with
our products
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10. What has changed Open Source ?
Before After
The
Almost
All-In-One
Solution
Only compatible with
our products
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11. Great !
But, how to put pieces together ?
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12. It’s where the community is important !
 Why ?
 You cannot be an expert on
everything
 The community is the
biggest set of knowledge
 User experiences
 Code base experts
Say Hi
to the community
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13. Inspired from a true story
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14. Technology choice
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15. After a pretty long discussion
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16. The ‘final’ decision – light version
Ace
Deployment Admin
ESB
Android
Enterprise OSGi Home-Made ESB
OSGi
Map Providers Agnostic
GPS based location
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17. Help Wanted – Different Community Models
 Nice picture
 But after a couple of dev days…
Help Needed !

%
 One question
 Multiple answers ! %
 Discussion %
 Feedbacks
?
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18. The big, perfect community
 The true and big community
 Several people may answer and help you
Reactivity

 24/7
%
%
%
?
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19. Several Community Models
 The big community in umbrella projects
 Few people may answer and help you
But they are generally the experts !

%
%
?
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20. Several Community Models
 The big community in dormant projects
 Mostly abandoned projects
 Why ?
 Evolution (something better somewhere else)
 Tragedy of the commons
?
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21. Several Community Models
 The limited community
 Generally the expert
 Dependence …
%
?
21 OSS & Communities

22. Several Community Models
 The dead community project
?
22 OSS & Communities

23. When users enter the community
 The community is not only developers
 Users are also really important
 User feedbacks
 User point of view
 No users
 No challenges !
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24. The ultimate goal of the community
Confidence
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25. Why not diving ?
 Open Source has drastically changed how we build software
systems
 More modular, flexible, robust, high quality
 Why not diving ?
 Win – Win
 Good for the community
 Feedback
 Challenge
 Good for the users
 Expertise
 Good for academia
 A nice way to get feedback
But don’t forget to say ‘THANKS’
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26. Questions ?
Karl Pauls Dr. Clement Escoffier
karl.pauls@akquinet.de clement.escoffier@akquinet.de
Bülowstraße 66, 10783 Berlin Bülowstraße 66, 10783 Berlin
+49 151 226 49 845 +49 175 2467717
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