[JIRA] [git-client-plugin] (JENKINS-25387) JGit in git client should support reference repositories

Tue, 16 Dec 2014 10:28:44 -0800

Stephan, I have a kinda-crazy feature request: would it be possible to augment this functionality to also use reference repos for submodules? In our use case, we have a submodule that is as large as our 'main' module.

git submodule update supports the `--reference` flag, so I think this would be replacing the current `git submodule update --init --recursive` with something like (bash-style psuedocode):

git submodule init
refdir=`cat .git/objects/info/alternates`
for repo in `git submodule status | awk '{print $2}'`; do
   if [ -d "$refdir/../modules/$repo/objects ]; then
      git submodule update --reference $refdir/$repo --recursive -- $repo
   else
      git submodule update --recursive -- $repo
   fi
done


(Though I admit I'm confused by how git references play around with submodules, so maybe the above won't work.  It seemed to in my testing, at least.)



Thanks!

craig
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