Multiple update hooks for Gitlab

update-multiple

#!/bin/bash

# The standard, global, Gitlab update hook
update_true_path="$(cd `dirname $(readlink $0)` && pwd)"
update_gitlab="$update_true_path/update"

# Additional, local, update.before and update.after hooks
hooks_dir="$(cd `dirname $0` && pwd)"
update_before="$hooks_dir/update.before"
update_after="$hooks_dir/update.after"

if [ -x $update_before ]; then
  $update_before "$@" || exit 1
fi

$update_gitlab "$@" || exit 1

if [ -x $update_after ]; then
  $update_after "$@" || exit 0
fi

Goals, on push:

• be able to make additional blocking checks (forbidden files, files too large...) before Gitlab references the push --> update.before
• be able to update external ticketing tools with commit details (errors shouldn't block the push) --> update.after

2 ways to implement it:

1. repo by repo

• Save update-multiple (below) into /opt/gitlab/embedded/service/gitlab-shell/hooks/update-multiple. Make executable.
• Go into the repo's hooks folder then symlink update to this new update-multiple:
  rm update
  sudo -u git ln -s /opt/gitlab/embedded/service/gitlab-shell/hooks/update-multiple update

2. global

• Copy the original update file under a new name, e.g. update.gitlab
• Replace the contents of the update file with update-multiple (below). Remember to edit line 5 (e.g. update_gitlab="$update_true_path/update.gitlab")

Tested on latest CentOS 6 + Gitlab omnibus package.
I haven't tested what happens in case you update Gitlab. Use at your own risk.

You can now add "update.before" and "update.after" scripts in the hooks folder of your repository.