control-repo/scripts/config_version.sh

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#!/bin/sh
# Usage
if [ $# -ne 2 -o ! -d "$1" -o ! -d "$1/$2" ]; then
echo "usage: $0 <environmentpath> <environment>" >&2
exit 1
fi
# For portability, identify a preferred ruby executable to use
ruby() {
[ -x /opt/puppetlabs/puppet/bin/ruby ] \
&& /opt/puppetlabs/puppet/bin/ruby "$@" \
|| /usr/bin/env ruby "$@"
}
# Determine how best to calculate a config_version
if [ -e $1/$2/.r10k-deploy.json ]; then
# The environment was deployed using r10k. We will calculate the config
# version using the r10k data.
ruby $1/$2/scripts/config_version-r10k.rb $1 $2
elif [ -e /opt/puppetlabs/server/pe_version ]; then
# This is a Puppet Enterprise system and we can rely on the rugged ruby gem
# being available.
ruby $1/$2/scripts/config_version-rugged.rb $1 $2
elif type git >/dev/null; then
# The git command is available.
git --git-dir $1/$2/.git rev-parse HEAD
else
# Nothing else available; just use the date.
date +%s
fi