#!/bin/sh
#################################################################################
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#################################################################################
# Script to reliably restart the cplane and dplane services used by the Mark6 
# recording software.
# The script automatically opens terminal windows displaying the cplane 
# and dplane logs.
#
# Original author: Helge Rottmann (MPIfR)
# Contact: rottmann(AT)mpifr.de
#################################################################################

DPLANE='dplane'
CPLANE='cplane'

DPLANE_LOG=/var/log/mark6/dplane-daemon.log
CPLANE_LOG=/var/log/mark6/cplane-daemon.log


# checks if a service is running
is_service() {
if ps ax | grep -v grep | grep -v tail | grep $1 > /dev/null
then
		return 0
	else
		return 1
	fi
}

 
# main

# close any log windows
echo "Closing log windows"
if ps ax | grep -v grep | grep $DPLANE_LOG
then
	kill $(ps ax | grep -v grep | grep $DPLANE_LOG | awk '{print $1}')
fi

if ps ax | grep -v grep | grep $CPLANE_LOG
then
	kill $(ps ax | grep -v grep | grep $CPLANE_LOG | awk '{print $1}')
fi


# stop the services
if is_service $DPLANE
then
    echo "Stoping " $DPLANE
    sudo /etc/init.d/dplane stop
    wait
fi

if is_service $CPLANE
then
    echo "stoping " $CPLANE
    sudo /etc/init.d/cplane stop
    wait
fi

sleep 2

# sometimes cplane/dplane cannot be stopped by the service scripts
# so check if the services are really stopped
if is_service $DPLANE
then
    echo "$DPLANE service is still running"
    echo "Try ending it with kill -9"
    exit
fi

if is_service $CPLANE
then
    echo "$CPLANE service is still running"
    echo "Try ending it with kill -9"
    exit
fi

# now restart the dplane and cplane services
echo "Starting $DPLANE"
sudo /etc/init.d/$DPLANE start
wait
sleep 5
echo "Starting $CPLANE"
sudo /etc/init.d/$CPLANE start
wait

# make sure services are up and running
if ! is_service $DPLANE
then
    echo "$DPLANE service did not start"
    echo "Giving up. Try rebooting. "
    exit
fi

if ! is_service $CPLANE
then
    echo "$CPLANE service did not start"
    echo "Giving up. Try rebooting. "
    exit
fi

# display logs in xterms
echo "Opening log output windows"
xterm -e "tail -f /var/log/mark6/dplane-daemon.log" &
xterm -e "tail -f /var/log/mark6/cplane-daemon.log" &