#!/bin/bash
#
# neutron-netns-cleanup  OpenStack Neutron netns cleanup utility
#
# chkconfig:   - 97 02
# description: OpenStack Neutron netns cleanup utility
#
# This is a one-shot init.d script with the next properties:
#
# * It accepts 3 verbs: start, stop, status
# * It cleans unused resources during start (system or agents startup)
# * It cleans everything on stop (agents migration to other hosts)
# * Once started, it will respond with status = OK
# * Once stopped, it will respond with status = DEAD
#
### END INIT INFO

. /etc/rc.d/init.d/functions

proj=neutron
prog=$proj-netns-cleanup
exec="/usr/bin/$prog"
configs=(
    "/etc/$proj/$proj.conf" \
    "/etc/$proj/dhcp_agent.ini"
)
configs_str=${configs[@]/#/--config-file }

[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog

lockfile=/var/lock/subsys/$prog

clean() {
    cleanopts="$@"
    [ -x $exec ] || exit 5
    for config in ${configs[@]}; do
        [ -f $config ] || exit 6
    done
    runuser -s /bin/bash neutron -c "$exec $cleanopts --log-file /var/log/$proj/netns-cleanup.log $configs_str &>/dev/null"
    if [ "x$1" == "x--force" ]; then
	killall neutron-ns-metadata-proxy 2>/dev/null  || :
	killall neutron-keepalived-state-change 2>/dev/null || :
	kill $(ps ax | grep -e "keepalived.*\.pid-vrrp" | awk '{print $1}') 2>/dev/null || :
	kill $(ps ax | grep -e "radvd.*\.pid\.radvd" | awk '{print $1}') 2>/dev/null || :
	kill $(ps ax | grep -e "haproxy .*/conf .*/pid" | awk '{print $1}') 2>/dev/null || :
    fi
    return $?
}

retval=0

case "$1" in
    start)
        clean
        retval=$?
        [ $retval -eq 0 ] && touch $lockfile
        ;;
    stop)
        clean --force
        retval=$?
        [ $retval -eq 0 ] && rm -f $lockfile
        ;;
    status)
        [ ! -f $lockfile ] && retval=3
        ;;
    restart|reload|force-reload|status|condrestart|try-restart)
        # Do nothing
        ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
        exit 2
esac
exit $retval