#!/bin/sh

### BEGIN INIT INFO
# Provides:
# Required-Start: $remote_fs $network $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Nova Test Config
# Description: OpenStack Nova Test Config
### END INIT INFO


NOVA_CONF_FILE="/etc/nova/nova.conf"
temp_file="/tmp/do_note_delete_me.temp"


function get_field() {
    while read data; do
        if [ "$1" -lt 0 ]; then
            field="(\$(NF$1))"
        else
            field="\$$(($1 + 1))"
        fi
        echo "$data" | awk -F'[ \t]*\\|[ \t]*' "{print $field}"
    done
}

start()
{
    if [ -e $NOVA_CONF_FILE ]; then
        sleep 5
        source /etc/nova/openrc
        nova floating-ip-pool-list > $temp_file 2>&1
        if [ "$?" != "0" ]; then
            echo "Nova service is not running"
            exit 1
        fi
        line=`sed -n '4p' < $temp_file`
        if [ "$line" != "+------+" ]; then
            pool_name=`echo $line | get_field 1`
            sed -i "s/^default_floating_pool = .*/default_floating_pool = ${pool_name}/" $NOVA_CONF_FILE
            /etc/init.d/nova-api restart
        else
            echo "ERROR: There is no floating IP pool"
        fi
        rm -f $temp_file > /dev/null 2>&1
    fi
}

case "$1" in
    start)
        start
        ;;
    stop|force-reload|restart|reload|status)
        echo "WARNING: command $1 is not supported"
        ;;
    *)
        echo "Usage: $0 {start|stop|force-reload|restart|reload|status}"
        exit 1
        ;;
esac

exit 0