#! /bin/sh

### BEGIN INIT INFO
# Provides:        dmt-procmgt
# Required-Start:  $network $remote_fs $syslog
# Required-Stop:   $network $remote_fs $syslog
# Default-Start:   2 3 4
# Default-Stop:    1 5
# Short-Description: Start DMT process management
### END INIT INFO
#
#  Redhat version of debian functions. 
#log_daemon_msg() {
#    echo $@
#}
#log_end_msg() {
#    echo "end: $DAEMON, rc = $@"
#}
#status_of_proc() {
#    status $1
#}
#
# build parameters
prefix=/usr
exec_prefix=${prefix}
datarootdir=${prefix}/share
sysconfdir=/etc

PATH=/sbin:/bin:/usr/sbin:/usr/bin

# Source function library.
#. /etc/init.d/functions
. /lib/lsb/init-functions

DAEMON=/usr/bin/procmgt
PIDFILE=/var/run/dmt-procmgt.pid

#  Source configuration file.
cfgfile=${sysconfdir}/default/default-dmt-procmgt
[ -f $cfgfile ] && . $cfgfile

test -x $DAEMON || exit 5

LOCKFILE=/var/lock/dmtpdate

lock_dmtpdate() {
	if [ -x /usr/bin/lockfile-create ]; then
		lockfile-create $LOCKFILE
		lockfile-touch $LOCKFILE &
		LOCKTOUCHPID="$!"
	fi
}

unlock_dmtpdate() {
	if [ -x /usr/bin/lockfile-create ] ; then
		kill $LOCKTOUCHPID
		lockfile-remove $LOCKFILE
	fi
}

RUNASUSER=${PROCMGT_RUN_USER:-dmtexec}
UGID=$(getent passwd $RUNASUSER | cut -f 3,4 -d:) || true
[ -n "$USERHOME" ] || USERHOME=$(eval echo ~${RUNASUSER})
DMT_OPTS="--file:$PROCMGT_FILE_PREFIX --runlist start"
DMT_NAME=`echo $PROCMGT_FILE_PREFIX | sed -e 's,^.*/,,g'`
stamp=`when 0 "%Y%02m%02d-%02H%02N"`
host=`uname -n`

case $1 in
	start)
		tmpdir=/tmp/procmgt_$host
		mkdir -p $tmpdir
		echo "HOME $USERHOME"                > $tmpdir/procmgt_Initial
		echo "HOST $host"                   >> $tmpdir/procmgt_Initial
                echo "-log -name:$DMT_NAME-$host \\" > $tmpdir/procmgt_Start
                echo "    procmgt $DMT_OPTS"        >> $tmpdir/procmgt_Start

		log_daemon_msg "Starting DMT process manager" "dmt-procmgt"
		if [ -z "$UGID" ]; then
			log_failure_msg "user \"$RUNASUSER\" does not exist"
			exit 1
		fi
		dmt_options="--file:$tmpdir/procmgt start"
		lock_dmtpdate
   start-stop-daemon --start --quiet --oknodo \
                     --pidfile $PIDFILE --startas $DAEMON \
                     -c $UGID -- $dmt_options
#   daemon --user $RUNASUSER --pidfile $PIDFILE \
#          $DAEMON $dmt_options
		status=$?
		sleep 2
		while [ `ps -u $RUNASUSER | grep -c procmgt` = 2 ]; do
		    sleep 2
		done
		pid=`ps -u $RUNASUSER | grep procmgt | awk '{print $1}'`
		if [ "x$pid" != "x" -a ! -f $PIDFILE ]; then
		    echo $pid > $PIDFILE
		fi
		unlock_dmtpdate
		/bin/rm -rf $tmpdir
		log_end_msg $status
  		;;
	stop)
		log_daemon_msg "Stopping DMT process manager" "dmt-procmgt"
  	    start-stop-daemon --stop --quiet --oknodo \
                          --pidfile $PIDFILE
#        killproc -p $PIDFILE dmt-procmgt -TERM
		log_end_msg $?
		rm -f $PIDFILE
  		;;
	restart|force-reload)
		svpid=0
		[ -f $PIDFILE ] && svpid=`cat $PIDFILE`
		$0 stop
		if [ $svpid != 0 ]; then
		    wtime=0
		    wait_max=60
		    wink=5
		    while [ $wtime -lt $wait_max ]; do
			/bin/kill -0 $svpid || break
			/bin/sleep $wink
			wtime=`expr $wtime + $wink`
		    done
		fi
		$0 start
  		;;
	try-restart)
		if $0 status >/dev/null; then
			$0 restart
		else
			exit 0
		fi
		;;
	reload)
		exit 3
		;;
	status)
		status_of_proc $DAEMON "DMT process manager"
		;;
	*)
		echo "Usage: $0 {start|stop|restart|try-restart|force-reload|status}"
		exit 2
		;;
esac
