#!/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.

set -e

ROOT="$1"

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

ln -sf "/etc/systemd/system/openstack-cinder-setup.service" \
    "$ROOT/etc/systemd/system/multi-user.target.wants/openstack-cinder-setup.service"

##########################################################################
# Check variables
##########################################################################

if [ -z "$RABBITMQ_HOST" -a \
     -z "$RABBITMQ_PORT" -a \
     -z "$RABBITMQ_USER" -a \
     -z "$RABBITMQ_PASSWORD" -a \
     -z "$KEYSTONE_TEMPORARY_ADMIN_TOKEN" -a \
     -z "$GLANCE_HOST" -a \
     -z "$CINDER_DB_USER" -a \
     -z "$CINDER_DB_PASSWORD" -a \
     -z "$CONTROLLER_HOST" -a \
     -z "$OPENSTACK_AUTH_HOST" -a \
     -z "$OPENSTACK_AUTH_PORT" -a \
     -z "$CINDER_USER" -a \
     -z "$CINDER_PASSWORD" -a \
     -z "$CINDER_DEVICE" -a \
     -z "$CINDER_PUBLIC_URL" -a \
     -z "$CINDER_INTERNAL_URL" -a \
     -z "$CINDER_ADMIN_URL" -a \
     -z "$CINDER_PUBLIC_URL_V2" -a \
     -z "$CINDER_INTERNAL_URL_V2" -a \
     -z "$CINDER_ADMIN_URL_V2" ]; then
     # No Cinder options defined, do nothing.
     exit 0
fi

if [ -z "$RABBITMQ_HOST" -o \
     -z "$RABBITMQ_PORT" -o \
     -z "$RABBITMQ_USER" -o \
     -z "$RABBITMQ_PASSWORD" -o \
     -z "$KEYSTONE_TEMPORARY_ADMIN_TOKEN" -o \
     -z "$GLANCE_HOST" -o \
     -z "$CINDER_DB_USER" -o \
     -z "$CINDER_DB_PASSWORD" -o \
     -z "$CONTROLLER_HOST" -o \
     -z "$OPENSTACK_AUTH_HOST" -o \
     -z "$OPENSTACK_AUTH_PORT" -o \
     -z "$CINDER_USER" -o \
     -z "$CINDER_PASSWORD" -o \
     -z "$CINDER_DEVICE" -o \
     -z "$CINDER_PUBLIC_URL" -o \
     -z "$CINDER_INTERNAL_URL" -o \
     -z "$CINDER_ADMIN_URL" -o \
     -z "$CINDER_PUBLIC_URL_V2" -o \
     -z "$CINDER_INTERNAL_URL_V2" -o \
     -z "$CINDER_ADMIN_URL_V2" ]; then
    echo Some options required for Cinder were defined, but not all.
    exit 1
fi

##########################################################################
# Generate config variable shell snippet
##########################################################################

OPENSTACK_DATA="$ROOT/etc/openstack"
mkdir -p "$OPENSTACK_DATA"

python <<'EOF' >"$OPENSTACK_DATA/cinder.conf"
import os, sys, yaml

cinder_configuration={
    'RABBITMQ_HOST':os.environ['RABBITMQ_HOST'],
    'RABBITMQ_PORT':os.environ['RABBITMQ_PORT'],
    'RABBITMQ_USER':os.environ['RABBITMQ_USER'],
    'RABBITMQ_PASSWORD':os.environ['RABBITMQ_PASSWORD'],
    'KEYSTONE_TEMPORARY_ADMIN_TOKEN':os.environ['KEYSTONE_TEMPORARY_ADMIN_TOKEN'],
    'GLANCE_HOST':os.environ['GLANCE_HOST'],
    'CINDER_DB_USER':os.environ['CINDER_DB_USER'],
    'CINDER_DB_PASSWORD':os.environ['CINDER_DB_PASSWORD'],
    'CONTROLLER_HOST':os.environ['CONTROLLER_HOST'],
    'OPENSTACK_AUTH_HOST':os.environ['OPENSTACK_AUTH_HOST'],
    'OPENSTACK_AUTH_PORT':os.environ['OPENSTACK_AUTH_PORT'],
    'CINDER_USER':os.environ['CINDER_USER'],
    'CINDER_PASSWORD':os.environ['CINDER_PASSWORD'],
    'CINDER_DEVICE':os.environ['CINDER_DEVICE'],
    'CINDER_PUBLIC_URL':os.environ['CINDER_PUBLIC_URL'],
    'CINDER_INTERNAL_URL':os.environ['CINDER_INTERNAL_URL'],
    'CINDER_ADMIN_URL':os.environ['CINDER_ADMIN_URL'],
    'CINDER_PUBLIC_URL_V2':os.environ['CINDER_PUBLIC_URL_V2'],
    'CINDER_INTERNAL_URL_V2':os.environ['CINDER_INTERNAL_URL_V2'],
    'CINDER_ADMIN_URL_V2':os.environ['CINDER_ADMIN_URL_V2'],
}

yaml.dump(cinder_configuration, sys.stdout, default_flow_style=False)
EOF