#!/bin/sh
#
# Copyright (C) 2014  Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
#
# This is a "morph deploy" configuration extension to enable the
# cloud-init services.
set -e

ROOT="$1"

##########################################################################

set -e

case "$CLOUD_INIT" in
''|False|no)
    exit 0
    ;;
True|yes)
    echo "Configuring cloud-init"
    ;;
*)
    echo Unrecognised option "$CLOUD_INIT" to CLOUD_INIT
    exit 1
    ;;
esac


cloud_init_services="cloud-config.service
                     cloud-init-local.service
                     cloud-init.service
                     cloud-final.service"

# Iterate over the cloud-init services and enable them creating a link
# into /etc/systemd/system/multi-user.target.wants.
# If the services to link are not present, fail.

services_folder="lib/systemd/system"
for service_name in $cloud_init_services; do
    if [ ! -f "$ROOT/$services_folder/$service_name" ]; then
        echo "ERROR: Service $service_name is missing." >&2
        echo "Failed to configure cloud-init."
        exit 1
    else
        echo Enabling systemd service "$service_name" >"$MORPH_LOG_FD"
        ln -sf "/$services_folder/$service_name" \
            "$ROOT/etc/systemd/system/multi-user.target.wants/$service_name"
    fi
done