There are a number of changes in 3.3 but fundamentally the structure is 
the same.  As for your performance issue...   Interesting.  per-project 
check out with SVN is slow?  that does not bode well for incremental 
building of only those parts that need to be built.  The incremental 
approach seems to imply that you would only check out the projects that 
need building and those which are already built can just be used directly.

In any event, with the new provisioning work that we are doing in Equinox 
we are looking to see if there are opportunities to improve the overall 
build story.  Input from other people with realworld build problems (and 
solutions) would be great.  That should likely go on the equinox-dev or 
pde-build-dev lists as appropriate.

Jeff





"Jeremy Volkman" <[EMAIL PROTECTED]> 
Sent by: [EMAIL PROTECTED]
04/30/2007 11:35 AM
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Re: [osgi-dev] Continuous Integration of OSGi Bundles






Jeff,

Perhaps I'll look towards starting with the current PDE build, then.  I'll 
try to catch up on its lists.  Are you aware of any large changes since 
3.2 was released?

The PDE part of our build really isn't the problem.  The problem is that 
I'm storing each bundle as a project checked out into an Eclipse workspace 
(all headlessly).  Updating the projects from subversion is much like 
highlighting all projects in a workspace and selecting Team -> Update: the 
update happens project-per-project.  The much more efficient way to do 
this would be to simply update the root directory of all the bundle 
projects, which Subversion does very well.  However, this change would 
require some rearchitecting, and since we have other larger needs anyway 
we want to just redo the whole thing. 

One issue with the PDE export is that it's a mysterious black box of long 
running processes.  I'm sure that PDE Build has better build output, since 
it's not intended as a UI operation.  Also, the PDE export job fails 
completely if any of the bundles have unresolved manifests (with a 
CoreException).  It will complete successfully if a bundle has compilation 
problems, though. Optimally the export job would treat manifest resolution 
failures like compilation failures. 

Thanks,
Jeremy

On 4/30/07, Jeff McAffer <[EMAIL PROTECTED]> wrote:

Jeremy, 

There has been some discussion in the area of updating PDE build to do 
much of what you have described.  Currently however there are not enough 
people in that community to do the required work.  Do you think you/your 
organization would have time to work in this area? 

Jeff 

p.s., In case you didn't know, the Export Deployable Plugins and Fragments 
option in the Eclipse UI actually runs PDE build under the covers.  Not 
sure why performance is degrading.  You might check that you are not doing 
a build in the workspace (Look at the Project > Build Automatically menu 
setting).  That would be a waste since PDE build does its own build. 



"Jeremy Volkman" <[EMAIL PROTECTED]> 
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04/30/2007 10:22 AM 

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Greetings,

We're looking to re-implement/replace our current continuous
integration system, which has been building our OSGi project for the
past 10 months or so.  The current builder was quickly hacked together
over a period of a week, and we're starting to run into its
limitations now that our project has surpassed 150 bundles.

Some of the big requirements that we set for our current system were:
1. Automatic discovery of new bundle projects in the source
repository.  We didn't want to configure the builder each time we
added a new bundle to the project.
2. Build as much as needed, but no more.  Based on what was changed
since the previous build, we wanted to use OSGi dependency analysis to
figure out what needed to be built (i.e., changed bundles and bundles
depending upon them).  Because of this need, the builder must be able
to fetch dependencies required for build from our bundle repository.
3. Resolve build dependencies based upon OSGi metadata (not, for
instance, Maven dependencies).
4. Build Eclipse PDE bundle projects, since that's what we use as our
development environment.

To cover these requirements, we wrote a custom continuous integration
system consisting of:
1. A repository scanner (written using JavaSVN) able to detect new
projects in our repository; and
2. A bundle builder based around Eclipse PDE export operations.

We did not use the PDE build system but rather do the equivalent of
launching an Eclipse instance, selecting bundles and invoking "Export
Deployable plug-ins and fragments".

This system has worked fairly well for us.  However, it's becoming
slower and slower, and it is not easily extensible.  We'd like to be
able to make use of some existing builder for integrated
testing/reporting/etc.

I've noticed that a lot of people are using Maven to build OSGi
bundles.  However, as far as I can tell, Maven requires its own
dependency format, and cannot be extended resolve based upon OSGi
dependency metadata. Please correct me if this is incorrect.

Does anyone have any systems similar to this, or any pointers to build
systems that can be easily extended to support these types of
features?

Thanks,
Jeremy Volkman
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