#!/bin/sh
# hibagent daemon
# chkconfig: - 20 80
# description: EC2 instance hibernation agent
# processname: hibagent

### BEGIN INIT INFO
# Provides:        hibagent
# Required-Start:  $network $remote_fs $syslog
# Required-Stop:   $network $remote_fs $syslog
# Default-Start:   2 3 4 5
# Default-Stop:    0 1 6
# Short-Description: Start EC2 Spot hibernation agent
### END INIT INFO

. /lib/lsb/init-functions

DAEMON_PATH="/usr/bin"

NAME=hibagent
DESC="My daemon description"
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/hibagent

DAEMON=hibagent
DAEMONOPTS="--config /etc/hibagent-config.cfg --pidfile $PIDFILE"

if [ $# -eq 0 ]; then
    echo "Usage: $0 {start|stop|restart}"
    exit 1
else
    COMMAND="$1"
fi

case $COMMAND in
start)
	printf "%-50s" "Starting $NAME..."
	if [ -f $PIDFILE ]; then
		PID=`cat $PIDFILE`
		if [[ "`ps axf | grep ${PID} | grep -v grep`" ]]; then
			echo "hibagent is already running"
			exit 0
		fi
	fi

	cd $DAEMON_PATH
	$DAEMON $DAEMONOPTS > /dev/null 2>&1
	if [ $? -eq 0 ]; then
		printf "%s\n" "Ok"
	else
		printf "%s\n" "Fail"
		exit 1
	fi
;;
status)
	printf "%-50s" "Checking $NAME..."
	if [ -f $PIDFILE ]; then
		PID=`cat $PIDFILE`
		if [ -z "`ps axf | grep ${PID} | grep -v grep`" ]; then
			printf "%s\n" "Process dead but pidfile exists"
		else
			echo "Running"
		fi
	else
		printf "%s\n" "Service not running"
	fi
;;
stop)
	printf "%-50s" "Stopping $NAME"
	if [ -f $PIDFILE ]; then
		PID=`cat $PIDFILE`
		kill -HUP $PID
		printf "%s\n" "Ok"
		rm -f $PIDFILE
		exit 0
	else
		printf "%s\n" "already stopped"
		exit 0
	fi
;;

restart)
  	$0 stop
  	$0 start
;;

*)
	echo "Usage: $0 {status|start|stop|restart}"
	exit 1
esac