#!/bin/sh
# The content after this line comes from openstack-pkg-tools
# and has been automatically added to a .init.in script, which
# contains only the descriptive part for the daemon. Everything
# else is standardized as a single unique script.

# Author: Thomas Goirand <zigo@debian.org>
# Author: Ondřej Nový <novy@ondrej.org>

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin

if [ -z "${DAEMON}" ] ; then
	DAEMON=/usr/bin/${NAME}
fi
PIDFILE=/var/run/${PROJECT_NAME}/${NAME}.pid
if [ -z "${SCRIPTNAME}" ] ; then
	SCRIPTNAME=/etc/init.d/${NAME}
fi
if [ -z "${SYSTEM_USER}" ] ; then
	SYSTEM_USER=${PROJECT_NAME}
fi
if [ -z "${SYSTEM_GROUP}" ] ; then
	SYSTEM_GROUP=${PROJECT_NAME}
fi
if [ "${SYSTEM_USER}" != "root" ] ; then
	STARTDAEMON_CHUID="--chuid ${SYSTEM_USER}:${SYSTEM_GROUP}"
fi
if [ -z "${CONFIG_FILE}" ] ; then
	CONFIG_FILE=/etc/${PROJECT_NAME}/${PROJECT_NAME}.conf
fi
LOGFILE=/var/log/${PROJECT_NAME}/${NAME}.log
if [ -z "${NO_OPENSTACK_CONFIG_FILE_DAEMON_ARG}" ] ; then
	DAEMON_ARGS="--config-file=${CONFIG_FILE} ${DAEMON_ARGS}"
fi

# Exit if the package is not installed
[ -x $DAEMON ] || exit 0

# If ran as root, create /var/lock/X, /var/run/X and /var/cache/X as needed
if [ `whoami` = "root" ] ; then
	for i in lock run cache ; do
		mkdir -p /var/$i/${PROJECT_NAME}
		chown ${SYSTEM_USER}:${SYSTEM_GROUP} /var/$i/${PROJECT_NAME}
	done
fi

# This defines support functions which we use later on
. /lib/lsb/init-functions

RET=0

# Manage log options: logfile and/or syslog, depending on user's choosing
[ -r /etc/default/openstack ] && . /etc/default/openstack
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
[ "x$USE_SYSLOG" = "xyes" ] && DAEMON_ARGS="$DAEMON_ARGS --use-syslog"
if [ -z "${NO_OPENSTACK_LOGFILE_DAEMON_ARG}" ] ; then
	[ "x$USE_LOGFILE" != "xno" ] && DAEMON_ARGS="$DAEMON_ARGS --log-file=$LOGFILE"
fi

do_start() {
	start-stop-daemon \
		--start \
		--quiet \
		--background ${STARTDAEMON_CHUID} \
		--make-pidfile --pidfile ${PIDFILE} \
		--chdir /var/lib/${PROJECT_NAME} \
		--startas $DAEMON \
		--test > /dev/null \
		|| return 1
	start-stop-daemon \
		--start \
		--quiet \
		--background ${STARTDAEMON_CHUID} \
		--make-pidfile --pidfile ${PIDFILE} \
		--chdir /var/lib/${PROJECT_NAME} \
		--startas $DAEMON \
		-- $DAEMON_ARGS \
		|| return 2
}

do_stop() {
	start-stop-daemon \
		--stop \
		--quiet \
		--retry=TERM/30/KILL/5 \
		--pidfile $PIDFILE
	RETVAL=$?
	rm -f $PIDFILE
	return "$RETVAL"
}

do_systemd_start() {
	exec $DAEMON $DAEMON_ARGS
}

case "$1" in
start)
	log_daemon_msg "Starting $DESC" "$NAME"
	do_start
	case $? in
		0|1) log_end_msg 0 ; RET=$? ;;
		2)   log_end_msg 1 ; RET=$? ;;
	esac
;;
stop)
	log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case $? in
		0|1) log_end_msg 0 ; RET=$? ;;
		2)   log_end_msg 1 ; RET=$? ;;
	esac
;;
status)
	status_of_proc "$DAEMON" "$NAME"
	RET=$?
;;
systemd-start)
	do_systemd_start
;;  
restart|force-reload)
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case $? in
		0|1)
			do_start
			case $? in
				0) log_end_msg 0 ; RET=$? ;;
				1) log_end_msg 1 ; RET=$? ;; # Old process is still running
				*) log_end_msg 1 ; RET=$? ;; # Failed to start
			esac
		;;
		*) log_end_msg 1 ; RET=$? ;; # Failed to stop
	esac
;;
*)
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload|systemd-start}" >&2
	RET=3
;;
esac

exit $RET
