#!/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

# Create required system users and groups

getent group nova >/dev/null || groupadd -r --gid 162 nova
getent passwd nova >/dev/null || \
	useradd --uid 162 -r -g nova -d /var/lib/nova -s /sbin/nologin \
	-c "OpenStack Nova Daemons" nova

# Create the keystone user and services

export OS_SERVICE_TOKEN=##KEYSTONE_TEMPORARY_ADMIN_TOKEN##
export OS_SERVICE_ENDPOINT='http://onenode:35357/v2.0'

keystone user-create --name ##NOVA_SERVICE_USER## --pass ##NOVA_SERVICE_PASSWORD##
keystone user-role-add --tenant service --user ##NOVA_SERVICE_USER## --role admin

keystone service-create --name nova --type compute --description "OpenStack Compute Service"
keystone endpoint-create  --service-id $(keystone service-list | awk '/ compute / {print $2}') \
	    	          --publicurl ##NOVA_PUBLIC_URL## \
	                  --internalurl ##NOVA_INTERNAL_URL## \
	                  --adminurl ##NOVA_ADMIN_URL## \
			  --region ##NOVA_REGION##

# Nova compute configuration
if [ ! -d /var/run/nova ]; then
    mkdir -p /var/run/nova
    chown -R nova:nova /var/run/nova
fi

if [ ! -d /var/lock/nova ]; then
    mkdir -p /var/lock/nova
    chown -R nova:nova /var/lock/nova
fi

if [ ! -d /var/log/nova ]; then
    mkdir -p /var/log/nova
    chown -R nova:nova /var/log/nova
fi

if [ ! -d /var/lib/nova/instances ]; then
    mkdir /var/lib/nova/instances
    chown -R nova:nova /var/lib/nova/instances
fi

# Setup the nova database
if ! sudo -u postgres psql -lqt | grep -q nova; then
    # Create posgreSQL user
    sudo -u postgres createuser \
	    --pwprompt --encrypted \
	    --no-adduser --no-createdb \
	    --no-password \
	    ##NOVA_DB_USER##

    sudo -u postgres createdb \
	    --owner=##NOVA_DB_USER## \
	    nova

    sudo -u nova nova-manage db sync
fi

# Nova novncproxy needs to know the ip of the novnc host
# this is a workaround to make nova known which is the novnc host
eth_ip="$(ip addr | perl -pe 'if (/^\d+: ([^:]+)/) { $iface=$1; } if (m@^\s*inet ([^/]+)/@) { print "$iface $1\n"; } $_=undef;' | grep "^br-eth0" | head -1 | awk '{ print $2 } ')"
sed -i "s/\#\#NOVNC_HOST\#\#/$eth_ip/g" /etc/nova/nova.conf

chown -R nova:nova /var/lib/nova

# Add nova to the libvirt group
usermod -a -G libvirt nova

# Check existence of Network Block Device module in the kernel
# NOTE: modprobe does not work actually and returns always
# failure, enable this check when modprobe is fixed.
#modprobe nbd

# Remove the one-shot setup service
rm /etc/systemd/system/multi-user.target.wants/openstack-nova-setup.service

# Start nova services
systemctl start openstack-nova-compute
# [1] Never enable openstack-nova-conductor service in a node with
# openstack-nova-compute or the security benefits of removing
# database access from nova-compute will be negated
#systemctl start openstack-nova-conductor
systemctl start openstack-nova-api
systemctl start openstack-nova-cert
systemctl start openstack-nova-consoleauth
systemctl start openstack-nova-scheduler
systemctl start openstack-nova-novncproxy
#systemctl start openstack-nova-xvpnvncproxy

# Create the links to run nova services when system start next times.
ln -s "/etc/systemd/system/openstack-nova-compute.service" \
    "/etc/systemd/system/multi-user.target.wants/openstack-nova-compute.service"
# See description of why this shouldn't run in a openstack in one node in [1]
#ln -s "/etc/systemd/system/openstack-nova-conductor.service" \
#    "/etc/systemd/system/multi-user.target.wants/openstack-nova-conductor.service"

ln -s "/etc/systemd/system/openstack-nova-api.service" \
    "/etc/systemd/system/multi-user.target.wants/openstack-nova-api.service"

ln -s "/etc/systemd/system/openstack-nova-cert.service" \
    "/etc/systemd/system/multi-user.target.wants/openstack-nova-cert.service"

ln -s "/etc/systemd/system/openstack-nova-consoleauth.service" \
    "/etc/systemd/system/multi-user.target.wants/openstack-nova-consoleauth.service"

ln -s "/etc/systemd/system/openstack-nova-scheduler.service" \
    "/etc/systemd/system/multi-user.target.wants/openstack-nova-scheduler.service"

ln -s "/etc/systemd/system/openstack-nova-novncproxy.service" \
    "/etc/systemd/system/multi-user.target.wants/openstack-nova-novncproxy.service"

exit 0