#!/bin/bash

# Demo script: manage local, gitolite-controlled, copies of upstream repos.

# Every time a client fetches such a repo, an upstream fetch happens, then the
# client fetch is completed.  Optionally, you can be "nice" and impose a
# minimum delay between 2 fetches.

# See bottom of file for instructions and notes.

# ----------------------------------------------------------------------

repo=$2                     # see doc/triggers.mkd for arguments

url=$(gitolite git-config $repo gitolite-options.upstream.url)
[ -z "$url" ] && exit 0     # exit if no url was specified

cd $GL_REPO_BASE/$repo.git

nice=$(gitolite git-config $repo gitolite-options.upstream.nice)
[ -n "$nice" ] && {
    # exit if lastfetch was less than $nice minutes ago
    find  .gl.upstream.lastfetch -mmin -$nice | grep . >/dev/null && exit 0
    touch .gl.upstream.lastfetch
}

git fetch -q "$url" '+refs/*:refs/*'

# ----------------------------------------------------------------------

# To install, add 'upstream' to the PRE_GIT trigger list in the rc file.
#
# Example setup to manage your own copy of the git repository:
#   repo git
#       R                       =   @all
#       RW+ my-company/         =   @developers
#       option  upstream.url    =   git://git.kernel.org/pub/scm/git/git.git
#       option  upstream.nice   =   120     # (optional) minimum 2 hours between fetches

# Notes:
#   1.  we don't use a remote; due to refspec being +refs/*:refs/* we don't need one
#   2.  please restrict local pushes, if any, to a namespace that the upstream won't use
#   3.  if the upstream URL changes, change the conf file accordingly and push the admin repo