#! /bin/sh
#
# varnish Control the varnish HTTP accelerator
#
# chkconfig: 235 90 10
# description: Varnish is a high-perfomance HTTP accelerator
# processname: varnishd
# config: /etc/sysconfig/varnish
# pidfile: /var/run/varnish/varnishd.pid

### BEGIN INIT INFO
# Provides: varnish
# Required-Start: $network $local_fs $remote_fs
# Required-Stop: $network $local_fs $remote_fs
# Should-Start: $syslog
# Short-Description: start and stop varnishd
# Description: Varnish is a high-perfomance HTTP accelerator
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

pidfile="/var/run/varnish/varnish.pid"
config="/etc/sysconfig/varnish"
lockfile="/var/lock/subsys/varnish"
prog="varnishd"
progfile="/usr/sbin/$prog"

# Include varnish defaults
[ -e /etc/sysconfig/varnish ] && . /etc/sysconfig/varnish

RETVAL=0
start() {

	if [ ! -x $progfile ]; then
	    echo $progfile not found
	    exit 5
	fi

	if [ ! -f $config ]; then
	    echo $config not found
	    exit 6
	fi
	echo -n "Starting varnish HTTP accelerator: "

	# Open files (usually 1024, which is way too small for varnish)
	ulimit -n ${NFILES:-131072}

	# Varnish wants to lock shared memory log in memory. 
	ulimit -l ${MEMLOCK:-82000}

        # $DAEMON_OPTS is set in /etc/sysconfig/varnish. At least, one
        # has to set up a backend, or /tmp will be used, which is a bad idea.
	if [ "$DAEMON_OPTS" = "" ]; then
		echo "\$DAEMON_OPTS empty."
		echo -n "Please put configuration options in $config"
		return 6
	else
		# Varnish always gives output on STDOUT
		daemon --pidfile $pidfile $progfile -P $pidfile "$DAEMON_OPTS" > /dev/null 2>&1
		RETVAL=$?
		if [ $RETVAL -eq 0 ]; then
		    touch $lockfile
		    echo_success
		    echo
		else
		    echo_failure
		fi
		return $RETVAL
	fi
}

stop() {
	echo -n "Stopping varnish HTTP accelerator: "
	killproc -p $pidfile $prog
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && rm -f $lockfile
	return $RETVAL
}

restart() {
	stop
	start
}

reload() {
	restart
}

force_reload() {
	restart
}

rh_status() {
	status -p $pidfile $prog
}

rh_status_q() {
	rh_status >/dev/null 2>&1
}

# See how we were called.
case "$1" in
	start)
		rh_status_q && exit 0
		$1
		;;
	stop)
		rh_status_q || exit 0
		$1
		;;
	restart)
		$1
		;;
	reload)
		rh_status_q || exit 7
		$1
		;;
	force-reload)
		force_reload
		;;
	status)
		rh_status
		;;
	condrestart|try-restart)
		rh_status_q || exit 0
		restart
		;;
	*)
	echo "Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"

	exit 2
esac

exit $?