eclipse rt projects gemini web and virgo par steve powell

Copyright VMware 2009, 2010. Licensed under the Eclipse Public License. 1

EclipseRT Virgo and Gemini Web

steve powell [email protected] frost [email protected] normington [email protected]

1Monday, 22 November 2010

mailto:[email protected]






Copyright VMware 2009, 2010. Licensed under the Eclipse Public License.

Agenda

• OSGi basics

• Virgo and Gemini at Eclipse

• A tour of Virgo

• Current status

• How can I get started?

2



OSGi basics

3



• OSGi is a Module SystemA 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

4

“It’s bundles all the way down”



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)

5



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

6



Virgo and Gemini

7



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

8



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

9



Virgo and EclipseRT

10



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

11



Virgo Tour

12



Virgo Externals

13



Artifacts

• Identified by type, name, version

• Types:

• bundle - OSGi bundle

• configuration - properties file

• plan - list of artifacts

• ...

16



Plans

• XML

• List artifacts by type, name, version (range)

• Scoping

• Atomicity

• PARs similar

• contain artifacts

• scoped, atomic

18



Scoping

19



Repositories

• Artifacts indexed by type, name, version

• Supports queries e.g. by version range

• Repository types:

• External

• Watched

• Remote

• Repositories may be chained21



Repository Chaining

remote

22



Pipelines

24



Regions

26



Current Status

27



• 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

28

Virgo released


http://wiki.eclipse.org/Virgo/Source

http://wiki.eclipse.org/Virgo/Source


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)

29



Release Notes

30

• Performance improvements (startup, logging)

• Upgrade dependencies (Equinox; Tomcat; LogBack; Gemini.Web)

• Equinox Console extension (vsh)

• Bugs and docs improvements



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/

31


http://www.eclipse.org/virgo/documentation/

http://www.eclipse.org/virgo/documentation/


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

32


http://www.springsource.com/products/sts

http://www.springsource.com/products/sts

http://dist.springsource.com/release/TOOLS/nightly/e3.6





Time-line Virgo 2.1.0

33

RELEASE

NovMay June July Aug Sept Oct

2.2.

0.M

01

Code drop

M01 M02

improve diags in fs failuresfix undeploy bugsreleasable kernelimprove ‘buildability’

M03 M04

logging performance bugcontributions added: - testcases - OSGi extensions

M05M06

RC1

Equinox upgradeslim kernelWindows startup

Rationalise dependenciesremove shelladd vsh extension

performancelogback upgradeartifact extension api



How can I get started?

34



Getting Started

• Pre-req: Java 6

• Download and unzip

• bin/startup.sh or bin\startup.bat

• drop WAR files or bundles into pickup dir(there are some there already)

35



...then what?

• Read documentation

• User Guide

• Programmer Guide

• “Getting Started” Guide

• Join the community

• http://wiki.eclipse.org/Virgo/Community

36


http://wiki.eclipse.org/Virgo/Community



Participants

• Casual user

• Expert user

• Contributor

• Committer

37



Committer Skills

• Know or willing to learn:

• Clean architecture and code

• Unit and integration testing built-in

• Concurrency

• (Deep) OSGi

• git, ant, ivy, etc.

38



Work Areas

39

• Developer docs, wiki, virgo-dev support

• Jetty support

• p2 integration

• More server types built on the kernel

• Integration, batch, RAP, ...



Virgo Futures

40



RAP news... (Florian Waibel)

41



Tools future

• donation to Eclipse in progress:

• Bundlor (standalone as well as plugin)

• dm Server Tools (Virgo Tools)

• including artifact grouping (plans)

42



Further Information

43

• 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


http://www.eclipse.org/virgo

http://www.eclipse.org/virgo



http://www.eclipse.org/virgo/download

http://www.eclipse.org/virgo/download

eclipse rt projects gemini web and virgo par steve powell

Technology

eclipse public license

atomiccopyright vmware

chainedcopyright vmware

committerscopyright

geminicopyright vmware

eclipsertcopyright vmware

timecopyright vmware

scopingcopyright vmware