#!/bin/bash
#
# osg.sh - a thin wrapper around gridmake that adds an offset
#          to the process number to obtain the job index.
#

max_retries=2

[ -r gridmake.xml ] || mv gridmake*.xml gridmake.xml
[ -r gridmake ] || mv gridmake* gridmake

if [ $# -lt 3 ]; then
	echo "Usage: osg.sh <ProcId> <ProcOffset> <EventCount>"
	exit 1
fi

workdir=`pwd`
if touch testfile; then
	rm testfile
else
	echo "work directory $workdir is not writeable, cannot continue"
	exit 1
fi

if [ "$X509_USER_PROXY" = "" ]; then
	X509_USER_PROXY=`ls x509*`
	if [ $? != 0 ]; then
		echo "X509_USER_PROXY is not defined, and no x509 file found!"
		exit 1
	fi
	export X509_USER_PROXY
fi

homedir=`pwd`
cd $workdir
echo Free space left on work disk: `df -h $workdir`
if [ ! -r gridmake ]; then
	cp $homedir/gridmake $homedir/gridmake.xml .
fi

jobno=`expr $1 + $2`
chmod +x gridmake  || exit 2
mv gridmake.xml gridmake.xml-orig
sed "s/@@events to generate@@/$3/" gridmake.xml-orig >gridmake.xml || exit 3

retries=0
while [ $retries -lt $max_retries ]; do
    ./gridmake -srm -f gridmake.xml gxtwist_v001_${jobno}.root
    retcode=$?
    if [ $retcode != 0 ]; then
	rm -rf packages
	echo "sleeping for 2 minutes before retrying..."
	sleep 120
    else
	break
    fi
    retries=`expr $retries + 1`
done
rm -f *.hddm *.root gridmake.xml*
rm -f .srmput*

exit $retcode