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#!/bin/sh

### BEGIN INIT INFO
# Provides:          nova-compute
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: OpenStack Compute (Nova) - @suffix@
# Description:       OpenStack Compute (Nova) - @suffix@
### END INIT INFO

SUFFIX="@suffix@"
DESC="nova-@suffix@"
DAEMON="/usr/bin/nova-$SUFFIX"
PIDFILE="/var/run/nova/nova-$SUFFIX.pid"

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

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

if ! [ -x ${DAEMON} ] ; then
	exit 0
fi

start ()
{
    if [ -e $PIDFILE ]; then
        PIDDIR=/proc/$(cat $PIDFILE)
        if [ -d ${PIDDIR} ]; then
            echo "$DESC already running."
            exit 1
        else
            echo "Removing stale PID file $PIDFILE"
            rm -f $PIDFILE
        fi
    fi
    PIDDIR=`dirname $PIDFILE`
    if [ ! -d $PIDDIR ]; then
        mkdir -p $PIDDIR
        chown nova $PIDDIR
    fi
    if [ ! -d /var/log/nova ]; then
    	mkdir /var/log/nova
    fi
    echo -n "Starting $DESC..."

    start-stop-daemon --start --quiet --background \
        --pidfile ${PIDFILE} --make-pidfile --exec ${DAEMON} \
	-- --log-dir=/var/log/nova

    if [ $? -eq 0 ]; then
        echo "done."
    else
        echo "failed."
    fi
}

stop ()
{
    echo -n "Stopping $DESC..."
    start-stop-daemon --stop --quiet --pidfile $PIDFILE
    if [ $? -eq 0 ]; then
        echo "done."
    else
        echo "failed."
    fi
    rm -f $PIDFILE
}

status()
{
    pid=`cat $PIDFILE 2>/dev/null`
    if [ -n "$pid" ]; then
        if ps -p $pid >&- ; then
            echo "$DESC is running"
            return
        fi
    fi
    echo "$DESC is not running"
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart|force-reload|reload)
        stop
        start
        ;;
    status)
	status
        ;;
    *)
        echo "Usage: $0 {start|stop|force-reload|restart|reload|status}"
        exit 1
        ;;
esac

exit 0