OMII-UK collaborations workshop Development tools and infrastructures (AKA ideas for OGSA-DAI and open development)

1
OMII-UK collaborations workshopDevelopment
tools and infrastructures(AKA ideas for OGSA-DAI
and open development)

• 01/05/2009

2
Who

• Pascal Ekin University of Manchester
• Mike Jackson University of Edinburgh
• Phil Kershaw NDG, RAL
• Eduardo Pignotti University of Aberdeen

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OGSA-DAI

• OGSA-DAI repository
• Area with third-party JARs
• Exposed publicly
• Hard to build
• Not structured to support OGSA-DAIs core and
  extension vision

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Product

• CVS
• We avoid branches
• SVN
• Tools to move from CVS to subversion
• Good for releases
• Can copy whole of trunk to release area
• Very powerful
• Eclipse plug-ins SubClipse
• GT/Taverna main and branch
• One for development
• One for current release and bug fixes

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Build

• ANT
• Build files and properties
• ANT scripts invokes other ANT scripts -
  dependencies
• Master build files
• Maven
• Compile, test, package, publish
• Express dependencies
• Pull in JARs from off-site repositories
• Publish nightly builds as JARs
• Local repository avoid online pull-down
• Taverna use Raven will move back to Maven
• All-or-none warning using Maven ANT could be
  very messy
• Does at lot of things behind the scenes but hard
  to understand if things goes wrong
• Whereas ANT is at least visible
• OMII SDK example
• e.g. HTTP GETs in Perl

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Build

• Community submit Maven configs, ANT scripts
  whatever
• e.g. to build OGSA-DAI versions with
  appllicatuion/community-specifc extension
• Easy_install
• Pulls down a package list of dependencies
• Pulls eggs (JARs) from repsitoroes
• ZC.BuildOut
• Builds on that versions and combinations of
  these eggs
• For consistent releases

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Test framework

• Build OGSA-DAI releases
• Deploy
• Compile and run tests
• Publish results
• ANT with iteration and try-catch
• Messy and hard to extend

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Test framework

• What does Maven give?
• What XP approaches and tools are there?
• Jython (Python)
• Java-style scripting clearer than Perl and more
  aligned with existing OGSA-DAI developer
  expertise
• Call out to ANT
• NUnit

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Open source project

• Governance
• An extension pack needs a change to the core
• Who is responsible for what
• Bugs, support, licence violations
• Contributions policy
• Branding
• TRAC
• Integrates with SVN
• Can integrate with CVS
• Ticketing

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Licencing

• Licence
• Formerly OGSA-DAI custom
• Now Apache 2
• NDG use BSD
• Who provides advice on how licences work together
• OGSA-DAI licence FAQ requested by users
• OMII-UK should do this
• Advantage of Maven model avoids bundling
• Smaller footprint for download
• But instead has the repository footprint

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Actions

• OMII/OSSWatch draw up guide on licence
  compatibilities for developers and publicise
• OSSWatch have advice on this
• OMII publicise this on their doc/WWW
• Mike Publicise OSSWatch advice on WWW and user
  doc
• Mike Find out how XP projects do system tests
• Mike Evaluate (play with!) Maven
• Mike Evaluate Jython