1. EclipseRT
Virgo and Gemini Web
steve powell spowell@vmware.com
chris frost cfrost@vmware.com
glyn normington gnormington@vmware.com
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 1
Monday, 22 November 2010 1

2. Agenda
• OSGi basics
• Virgo and Gemini at Eclipse
• A tour of Virgo
• Current status
• How can I get started?
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 2
Monday, 22 November 2010 2

3. OSGi basics
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 3
Monday, 22 November 2010 3

4. “It’s bundles all the way down”
• OSGi is a Module System
A Bundle = a Jar file = a single module (approx)
The Bundle Manifest defines the imports/exports
• Many adopters including a lot of Eclipse
projects
• Defined by the OSGi Alliance
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 4
Monday, 22 November 2010 4

5. Services
• A Bundle can export and consume services
This happens dynamically at runtime
• A service is a Java Object with some properties
• Managed by a Service Registry
(the Whiteboard pattern)
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 5
Monday, 22 November 2010 5

6. Life-cycle
• Resolving the dependencies must happen before
running a module’s code
• starting/stopping/refreshing a module are life-cycle
events
• OSGi framework offers life-cycle management
through services
• modules are dynamic
• resolved, started, stopped, refreshed at any time
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 6
Monday, 22 November 2010 6

7. Virgo and Gemini
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 7
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8. Virgo
• “Dynamic Enterprise Application Platform”
• Based on SpringSource dm Server 2.0
• not to be confused with Spring DM
• Original objectives:
• Better OSGi platform; Migration of Java EE
apps; Modular and extensible
• Virgo objectives:
• Broaden exploitation of OSGi; Lower barriers
to adoption; Grow committers
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 8
Monday, 22 November 2010 8

9. Gemini
• “Enterprise Modules Project”
• A collection of OSGi spec implementations
• Aims to provide authoritative collection
• Main contributors are SpringSource and
Oracle
• Virgo uses Gemini:
web and blueprint support
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 9
Monday, 22 November 2010 9

10. Virgo and EclipseRT
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 10
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11. Problems Virgo Solves
✓Groups bundles into manageable units
✓Enables the use of existing open source libraries
TCCL, LTW, implicit package use
✓Provisions from repositories
✓Extensive diagnostics
resolution failure analysis, deadlock detection,
delayed service warnings
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 11
Monday, 22 November 2010 11

12. Virgo Tour
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 12
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13. Virgo Externals
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 13
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14. Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 14
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15. Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 15
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16. Artifacts
• Identified by type, name, version
• Types:
• bundle - OSGi bundle
• configuration - properties file
• plan - list of artifacts
• ...
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 16
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17. Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 17
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18. Plans
• XML
• List artifacts by type, name, version (range)
• Scoping
• Atomicity
• PARs similar
• contain artifacts
• scoped, atomic
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 18
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19. Scoping
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20. Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 20
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21. Repositories
• Artifacts indexed by type, name, version
• Supports queries e.g. by version range
• Repository types:
• External
• Watched
• Remote
• Repositories may be chained
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 21
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22. Repository Chaining
remote
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 22
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23. Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 23
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24. Pipelines
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 24
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25. Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 25
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26. Regions
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 26
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27. Current Status
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 27
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28. Virgo released
• All code in git.eclipse.org repositories
(see http://wiki.eclipse.org/Virgo/Source)
• Virgo 2.1.0.RELEASE shipped (1 Nov 2010)
• Gemini Web 1.1.0.RELEASE shipped (1 Nov 2010)
• All repositories can be checked out and built
(SVTs soon)
• Virgo Recent Builds available
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 28
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29. Virgo released...
• Eclipse Community Forum (Virgo home link)
• Virgo developer mailing list
• Community conference call once a week
• Active Bugzilla (currently ~10 bugs; ~60 enh)
(bugs.eclipse.org/bugs under RT;
the Gemini.Web and Virgo products)
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 29
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30. Release Notes
• Performance improvements (startup,
logging)
• Upgrade dependencies (Equinox; Tomcat;
LogBack; Gemini.Web)
• Equinox Console extension (vsh)
• Bugs and docs improvements
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 30
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31. Documentation
• All updated for 2.1.0.RELEASE:
• User Guide
• Programmer’s Guide
• Getting Started Guide
(featuring GreenPages 2.3.0.RELEASE)
• http://www.eclipse.org/virgo/documentation/
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 31
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32. Tools
• SpringSource Tool Suite supports Virgo servers
out-of-the-box
• STS 2.5.0.RELEASE
• http://www.springsource.com/products/sts
• ...or add server tool support to Eclipse IDE
• http://dist.springsource.com/release/TOOLS/
nightly/e3.6 for dm Server Tools
• Including support for plans
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 32
Monday, 22 November 2010 32

33. Time-line Virgo 2.1.0 logging performance bug
contributions added:
- testcases
improve diags in fs failures - OSGi extensions
fix undeploy bugs Equinox upgrade
releasable kernel slim kernel
improve ‘buildability’ Windows startup
M05
1
.M0
Rationalise dependencies
Code drop remove shell performance M06
.0
add vsh extension logback upgrade
RC1
2.2
artifact extension api
M01 M02 M03 M04 RELEASE
May June July Aug Sept Oct Nov
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 33
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34. How can I get started?
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35. Getting Started
• Pre-req: Java 6
• Download and unzip
• bin/startup.sh or binstartup.bat
• drop WAR files or bundles into pickup dir
(there are some there already)
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 35
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36. ...then what?
• Read documentation
• User Guide
• Programmer Guide
• “Getting Started” Guide
• Join the community
• http://wiki.eclipse.org/Virgo/Community
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 36
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37. Participants
• Casual user
• Expert user
• Contributor
• Committer
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 37
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38. Committer Skills
• Know or willing to learn:
• Clean architecture and code
• Unit and integration testing built-in
• Concurrency
• (Deep) OSGi
• git, ant, ivy, etc.
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 38
Monday, 22 November 2010 38

39. Work Areas
• Developer docs, wiki, virgo-dev support
• Jetty support
• p2 integration
• More server types built on the kernel
• Integration, batch, RAP, ...
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 39
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40. Virgo Futures
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 40
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41. RAP news... (Florian Waibel)
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 41
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42. Tools future
• donation to Eclipse in progress:
• Bundlor (standalone as well as plugin)
• dm Server Tools (Virgo Tools)
• including artifact grouping (plans)
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 42
Monday, 22 November 2010 42

43. Further Information
• http://www.eclipse.org/Virgo
• http://wiki.eclipse.org/Virgo/Community
•#VirgoRT
• Download Virgo 2.1.0.RELEASE and try it
http://www.eclipse.org/Virgo/download
Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 43
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