#! /bin/sh

### BEGIN INIT INFO
# Provides:		crunchd
# Required-Start:	
# Required-Stop:	
# Default-Start:	2 3 4 5
# Default-Stop:		1
# Short-Description:	crunchy task worker daemon
### END INIT INFO

set -e

VIRTUALENV=/opt/Opal/current
DJANGO_PROJECT_DIR=/opt/Opal/release/opal
DJANGO_SETTINGS_MODULE=settings
CRUNCHD_PID_FILE="/var/run/crunchd.pid"
CRUNCHD_LOG_FILE="/var/log/crunchd.log"
CRUNCHD_LOG_LEVEL="INFO"
CRUNCHD="crunchd"

export DJANGO_SETTINGS_MODULE

# /etc/init.d/ssh: start and stop the crunchy task worker daemon.

test -x "$CRUNCHD" || exit 0

if test -f /etc/default/crunchd; then
    . /etc/default/crunchd
fi


. /lib/lsb/init-functions

chdir $DJANGO_PROJECT_DIR

CRUNCHD_OPTS="-f $CRUNCHD_LOG_FILE -l $CRUNCHD_LOG_LEVEL -p \
                    $CRUNCHD_PID_FILE -d"

if [ -n "$2" ]; then
    CRUNCHD_OPTS="$CRUNCHD_OPTS $2"
fi

# Are we running from init?
run_by_init() {
    ([ "$previous" ] && [ "$runlevel" ]) || [ "$runlevel" = S ]
}


check_dev_null() {
    if [ ! -c /dev/null ]; then
	if [ "$1" = log_end_msg ]; then
	    log_end_msg 1 || true
	fi
	if ! run_by_init; then
	    log_action_msg "/dev/null is not a character device!"
	fi
	exit 1
    fi
}


export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"
if [ ! -n "$VIRTUALENV" ]; then
    . "$VIRTUALENV/current/bin/activate"
    export PATH="$VIRTUALENV/current/bin:$PATH"
fi


case "$1" in
  start)
	check_dev_null
	log_daemon_msg "Starting crunchy task worker server" "crunchd"
	if start-stop-daemon --start --quiet --oknodo --pidfile $CRUNCHD_PID_FILE --exec $CRUNCHD -- $CRUNCHD_OPTS; then
	    log_end_msg 0
	else
	    log_end_msg 1
	fi
	;;
  stop)
	log_daemon_msg "Stopping crunchy task worker server" "crunchd"
	if start-stop-daemon --stop --quiet --oknodo --pidfile $CRUNCHD_PID_FILE; then log_end_msg 0
	else
	    log_end_msg 1
	fi
	;;

  reload|force-reload)
    echo "Use start+stop"
	;;

  restart)
	log_daemon_msg "Restarting crunchgy task worker server" "crunchd"
	start-stop-daemon --stop --quiet --oknodo --retry 30 --pidfile $CRUNCHD_PID_FILE
	check_for_no_start log_end_msg
	check_dev_null log_end_msg
	if start-stop-daemon --start --quiet --oknodo --pidfile $CRUNCHD_PID_FILE --exec $CRUNCHD -- $CRUNCHD_OPTS; then
	    log_end_msg 0
	else
	    log_end_msg 1
	fi
	;;

  try-restart)
	log_daemon_msg "Restarting crunchy task worker server" "crunchd"
	set +e
	start-stop-daemon --stop --quiet --retry 30 --pidfile $CRUNCHD_PID_FILE
	RET="$?"
	set -e
	case $RET in
	    0)
		# old daemon stopped
		check_dev_null log_end_msg
		if start-stop-daemon --start --quiet --oknodo --pidfile $CRUNCHD_PID_FILE --exec $CRUNCHD -- $CRUNCHD_OPTS; then
		    log_end_msg 0
		else
		    log_end_msg 1
		fi
		;;
	    1)
		# daemon not running
		log_progress_msg "(not running)"
		log_end_msg 0
		;;
	    *)
		# failed to stop
		log_progress_msg "(failed to stop)"
		log_end_msg 1
		;;
	esac
	;;

  status)
	status_of_proc -p $CRUNCHD_PID_FILE $CRUNCHD crunchd && exit 0 || exit $?
	;;

  *)
	log_action_msg "Usage: /etc/init.d/crunchd {start|stop|force-reload|restart|try-restart|status}"
	exit 1
esac

exit 0