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Software extensibility of an
Open Source project
@PhilippeOzil
Technical Evangelist
Agenda
• Who we are and what we do (in short)
• The challenges we faced with contributions
• The strategy we devised to leverage
contributions & extensibility
Who we are and what we do
(in short)
Who we are
2003
• Project supported by Bull
• Project on OW2
Open Source project
initiated at INRIA Nancy
2001
Bonitasoft company
founded in Grenoble
2009
Presently
A couple of million of line of
codes later, we are still here
with happyusers and
customers J
What we do: a BPMS
• Process modeler
• Execution engine
• Form & application builder
• Data & document management
• Connectivity to Information System
• Organization management
• Reporting
Our software is all about extensibility
Our model:
• We provide a generic solution
• Users adapt it for a wide variety of use cases and industries
Implies a high degree of software extensibility
This is what Open Source is about!
The challenges we faced with
contributions
We are Open Source from the start but…
At first, we faced issues with code contributions
• Contributor ratio too low compared to actual users
• Too few contributions integrated in product
• Some custom code never contributed back
Quite a few technical constraints
• Project’s technical complexity and scale
• Multiplatform environment (OS, DB, application server)
• Legacy
• Genericity
• Robustness
• Performance & scalability
The strategy we devised to leverage
contributions & extensibility
Microservice based architecture
Moving from
Monolith
(legacy)
TO
Microservices
Extension points
Providing multiple lightweight extensions points
• adds value to the software
• simple to implement & test
• easy to deploy
• do not interfere with core functionalities
Currently 14 extension types
Connectors, Widgets, REST API extensions…
Central repository of community contributions
• Eases search for users
• Simplifies contribution and maintenance
Dedicated space for each project
In the end some users contribute on contributions
Community projects
Project page
Release mgmt. Issue tracker
Community
Projects
Conclusion
Conclusion
During this presentation we have
• Highlighted some of the challenges of handling
contribution on a large & mature Open Source project
• Presented some leads on how to address these
Visit us online
bonitasoft.com
Join our community
bonitasoft.org
Download
bonitasoft.com/downloads
Follow us on twitter
@bonitasoft
@PhilippeOzil
Thank you for your attention.
Q&A Time
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Software extensibility of an open source project. OW2con'15, November 17, Paris.

  • 1. Software extensibility of an Open Source project @PhilippeOzil Technical Evangelist
  • 2. Agenda • Who we are and what we do (in short) • The challenges we faced with contributions • The strategy we devised to leverage contributions & extensibility
  • 3. Who we are and what we do (in short)
  • 4. Who we are 2003 • Project supported by Bull • Project on OW2 Open Source project initiated at INRIA Nancy 2001 Bonitasoft company founded in Grenoble 2009 Presently A couple of million of line of codes later, we are still here with happyusers and customers J
  • 5. What we do: a BPMS • Process modeler • Execution engine • Form & application builder • Data & document management • Connectivity to Information System • Organization management • Reporting
  • 6. Our software is all about extensibility Our model: • We provide a generic solution • Users adapt it for a wide variety of use cases and industries Implies a high degree of software extensibility This is what Open Source is about!
  • 7. The challenges we faced with contributions
  • 8. We are Open Source from the start but… At first, we faced issues with code contributions • Contributor ratio too low compared to actual users • Too few contributions integrated in product • Some custom code never contributed back
  • 9. Quite a few technical constraints • Project’s technical complexity and scale • Multiplatform environment (OS, DB, application server) • Legacy • Genericity • Robustness • Performance & scalability
  • 10. The strategy we devised to leverage contributions & extensibility
  • 11. Microservice based architecture Moving from Monolith (legacy) TO Microservices
  • 12. Extension points Providing multiple lightweight extensions points • adds value to the software • simple to implement & test • easy to deploy • do not interfere with core functionalities Currently 14 extension types Connectors, Widgets, REST API extensions…
  • 13. Central repository of community contributions • Eases search for users • Simplifies contribution and maintenance Dedicated space for each project In the end some users contribute on contributions Community projects Project page Release mgmt. Issue tracker Community Projects
  • 15. Conclusion During this presentation we have • Highlighted some of the challenges of handling contribution on a large & mature Open Source project • Presented some leads on how to address these
  • 16. Visit us online bonitasoft.com Join our community bonitasoft.org Download bonitasoft.com/downloads Follow us on twitter @bonitasoft @PhilippeOzil Thank you for your attention. Q&A Time