#!/bin/sh
### BEGIN INIT INFO
# Provides:          core-daemon
# Required-Start:    $network $remote_fs
# Required-Stop:     $network $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start the core-daemon CORE daemon at boot time
# Description:       Starts and stops the core-daemon CORE daemon used to
#                    provide network emulation services for the CORE GUI
#                    or scripts.
### END INIT INFO
#
# chkconfig: 35 90 03
# description: Starts and stops the CORE daemon \
#	       used to provide network emulation services.
#
# config:  /etc/core/

NAME=`basename $0`
PIDFILE="@CORE_STATE_DIR@/run/$NAME.pid"
LOG="@CORE_STATE_DIR@/log/$NAME.log"
CMD="PYTHONPATH=@pythondir@ @PYTHON@ @bindir@/$NAME"

get_pid() {
	cat "$PIDFILE"
}

is_alive() {
	[ -f "$PIDFILE" ] && ps -p `get_pid` > /dev/null 2>&1
}

corestart() {
	if is_alive; then
		echo "$NAME already started"
	else
		echo "starting $NAME"
		sudo $CMD 2>&1 >> "$LOG" &
	fi

	echo $! > "$PIDFILE"
	if ! is_alive; then
		echo "unable to start $NAME, see $LOG"
		exit 1
	fi
}

corestop() {
	if is_alive; then
		echo -n "stopping $NAME.."
		kill `get_pid`
		for i in 1 2 3 4 5; do
			sleep 1
			if ! is_alive; then
				break
			fi
			echo -n "."
		done
		echo

		if is_alive; then
			echo "not stopped; may still be shutting down"
			exit 1
		else
			echo "stopped"
			if [ -f "$PIDFILE" ]; then
				rm -f "$PIDFILE"
			fi
		fi
	else
		echo "$NAME not running"
	fi
}

corerestart() {
	corestop
	corestart
}

corestatus() {
	if is_alive; then
		echo "$NAME is running"
	else
		echo "$NAME is stopped"
		exit 1
	fi
}


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

exit $?