[postgis-devel] [even.rouault at mines-paris.org: [gdal-dev] Travis CI continuous integration service for GDAL]

[Paul Ramsey]

I had a read through to get a feel. I think for PostGIS we would find
it quite hard to do a travis-ci build, since we would need to install
builds of geos and gdal and proj before we could build postgis (not
impossible, but it would require having apt repositories available
with those dependencies).

P.

On Tue, Oct 16, 2012 at 9:27 AM, Sandro Santilli <strk at keybit.net> wrote:
> If anyone is looking for a learning project, setting up Travis CI for
> PostGIS (since we do have the git mirror already) would be an useful thing
> to do.
>
> ----- Forwarded message from Even Rouault <even.rouault at mines-paris.org> -----
>
> Date: Sun, 7 Oct 2012 11:42:30 +0200
> From: Even Rouault <even.rouault at mines-paris.org>
> To: gdal-dev <gdal-dev at lists.osgeo.org>
> Subject: [gdal-dev] Travis CI continuous integration service for GDAL
> User-Agent: KMail/1.13.5 (Linux/2.6.32-41-generic; KDE/4.4.5; x86_64; ; )
> X-BeenThere: gdal-dev at lists.osgeo.org
> List-Id: "Discussion for developers using and building GDAL/OGR." <gdal-dev.lists.osgeo.org>
>
> Hi,
>
> Following a recent similar move from MapServer, I've setup an instance of
> Travis CI, hosted continuous integration service. After each SVN commit in
> trunk, GDAL is built and the Java, Perl and Python tests are run.
>
> Travis CI currently offers Ubuntu 12.04 i386 virtual machines. The GDAL build
> is configured with almost any possible dependencies to external libraries (see
> http://trac.osgeo.org/gdal/wiki/Buildbot for the list)
>
> You can access to the latest builds here :
> https://travis-ci.org/#!/rouault/gdal/builds
>
> The result of builds is also notified on #gdal on irc.freenode.net and emailed
> to gdal-commits at lists.osgeo.org (only failures, or failure->success
> transitions are notified). It seems that a full build with tests takes about 10
> minutes (but I guess this may vary according to the load of the service).
>
> When committing, you can prevent a build from being triggered by including the
> "[ci skip]" string in the commit message.
>
> Technical details
> ------------------------
>
> As Travis CI is closely linked with GIT, I've setup a cron job (with a 1
> minute frequency) on my computer (*) that refreshes a GIT mirror of the GDAL
> SVN trunk, and pushes it to https://github.com/rouault/gdal . Travis-CI is
> notified by GitHub each time a commit is done into that repository.
>
> A http://svn.osgeo.org/gdal/trunk/.travis.yml file has been added at the root
> of the trunk. This file contains the instructions to download dependency
> libraries, setup databases (PostgreSQL, MySQL) that will be used for testing,
> build GDAL and its bindings, and run the tests.
>
> For GDAL committers that wish to tweak .travis.yml, you can find the syntax of
> that file at http://about.travis-ci.org/docs/user/build-configuration/
>
> One caveat of that system is that you don't have direct access to the Travis
> CI VM. So when tests fail on it and not on your own development machine, it
> might be hard to debug and fix them. Setting up a Ubuntu 12.04 i386 server
> edition VM and reproducing the instructions of .travis.yml will help in most
> cases. If a test fails specifically on Travis and cannot be fixed, you can skip
> it with
>
> if gdaltest.skip_on_travis():
>         return "skip"
>
> in the Python autotest suite. One limitation I found is that the tests that
> create huge sparse files (several gigabytes) fail, probably due to the disk
> quota affected to the VM. There are also failures in a few tests involving
> gdal.VSIStatL() that I couldn't reproduce on my own VM, so those failures have
> been turned into skip to keep the build "green".
>
> Note that to speed up the build, GDAL is compiled with clang 3.1 with --
> enable-debug. Due to timeouts that would kill the build instance if the build
> and tests take too much time, I haven't turned on the GDAL_DOWNLOAD_TEST_DATA
> = YES environment variable that causes big test datasets, which are not in
> SVN, to be downloaded, so those tests will be skipped. For not too big
> datasets, manual downloading can still be done in .travis.yml (see the
> "script" section).
>
> Best regards,
>
> Even
>
> (*)  The consequence is that when I turn off my computer for vacations, the
> refresh of the GIT repository will be paused.
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>
> ----- End forwarded message -----
>
> --
>
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>
>                                        ~~ http://strk.keybit.net
>
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