#! /bin/sh
#set -x
#
# Start und Stopskript fuer den Loadbalancer Pen
#
# /etc/init.d/pen
#
# Written by Miquel van Smoorenburg <miquels@drinkel.ow.org>.
# Modified for Debian GNU/Linux by Ian Murdock <imurdock@gnu.ai.mit.edu>.
# Modified for exim by Tim Cutts <timc@chiark.greenend.org.uk>
# Modified for pen by Torsten Goedicke <goedicke@wlw.de>

#set -e

JOBNAME="$0"
NAME=pen
DAEMON=/usr/local/bin/run$NAME.sh
CF=/etc/$NAME.cf

case `uname` in
  SunOS) ECHOSW=""
         ECHONL="\c"
         PS="ps -ef"
         ;;
  Linux) ECHOSW="-n"
         ECHONL=""
         PS="ps x"
         ;;
  *)     ;;
esac

PIDDIR="/var/run"
PIDALL="$PIDDIR/run$NAME.pid"

if [ -f $CF ]; then
  . $CF
else
  echo "Error: Configuration file $CF not found" && exit 0
fi

test -x $DAEMON || exit 0

case "$1" in
  start)
    PID=`$PS | grep $NAME | grep -v grep | grep -v $JOBNAME`
    if [ -n "$PID" ]; then
      echo "Loadbalancer $NAME is already running as"
      echo "$PID"
    else
      echo $ECHOSW "Starting Loadbalancer: $ECHONL"
      for i in $COUNT
      do
        eval PIDFILE=\$PID${i}
        eval OPTIONS=\$PEN${i}
        CFFILE=`echo $PIDFILE | sed 's/pid/conf/'`
        echo $OPTIONS > $CFFILE
        $DAEMON $CFFILE &
        echo $! >> $PIDALL
      done
      echo "$NAME."
    fi
    ;;
  stop)
    echo $ECHOSW "Stopping Loadbalancer: $ECHONL"
    test -f $PIDALL && kill -TERM `cat $PIDALL` 2> /dev/null
    test -f $PIDALL && kill -KILL `cat $PIDALL` 2> /dev/null
    rm -f $PIDALL
    for i in $COUNT
    do
      eval PIDFILE=\$PID${i}
      eval OPTIONS=\$PEN${i}
      CFFILE=`echo $PIDFILE | sed 's/pid/conf/'`
      test -f $PIDFILE && kill -TERM `cat $PIDFILE` 2> /dev/null
      rm -f $PIDFILE $CFFILE
    done
    echo "$NAME."
    ;;
  restart)
    echo $ECHOSW "Restarting Loadbalancer: $ECHONL"
    for i in $COUNT
    do
      eval PIDFILE=\$PID${i}
      eval OPTIONS=\$PEN${i}
      CFFILE=`echo $PIDFILE | sed 's/pid/conf/'`
      echo $OPTIONS > $CFFILE
      kill -TERM `cat $PIDFILE`
    done
    echo "$NAME."
    ;;
  *)
    echo "Usage: /etc/init.d/$NAME {start|stop|restart}"
    exit 1
    ;;
esac

exit 0