#!/bin/sh
####################################################################################################
# Script to control the java SimpleSocketServer process.
# 
# SS_PORT must be the same port as in the log4j.xml socket appender that the client (cipres-portal) uses.
# ss_log4j.xml should be the same log directory that the client (cipres-portal) is using for the other log files. 
#
# Usage: ss_control [start|stop|restart|status]
# Exit status 
#	start, restart, status  - 0 if socketserver is started or already running, 1 otherwise
#	stop - 0 if socketserver is killed or not running, 1 otherwise
# Notes:
#    * You must make this script executable. Running as "sh ss_control" won't work!
#    * If socket server is restarted or started after the web app, the socket appender in
#      the web app will try to reconnect.  It may take up to 30 sec.  That's the default time, but
#      can be overridden for the socket appender in the web app's log4j.xml.
####################################################################################################

# Figure out which directory this script is in.
whereami()
{
	program="$0"
	while [ -h "$program" ]; do
		link=`ls -ld "$program"`
		link=`expr "$link" : '.*-> \(.*\)'`
		if [ "`expr "$link" : '/.*'`" = 0 ]; then
			dir=`dirname "$program"`
			program="$dir/$link"
		else
			program="$link"
		fi
	done
	SS_ROOT=`dirname $program`
	SS_ROOT=`cd $SS_ROOT && /bin/pwd`
}


whereami
SS_PORT=${ngbw.logs.sdk.port}
SS_USER=`whoami`
HOST=`hostname`
LOG4J_JAR=${SS_ROOT}/log4j*.jar
LOG4J_XML=${SS_ROOT}/ss_log4j.xml
MYLOG=${ngbw.logs}/ss.log

if [ "`uname | grep Darwin`" = "Darwin" ]; then
	PS="ps -U$SS_USER -j -ww"
else
	PS="ps -U$SS_USER -f"
fi

# Get processes IDs of interest
getpids()
{
	MY_SS=`$PS | grep SimpleSocketServer | grep $SS_PORT | grep -v grep |  awk '{print $2}'`
	OTHER_SS=`$PS | grep SimpleSocketServer | grep -v $SS_PORT | grep -v grep | awk '{print $2}'`
	len $MY_SS ; MY_SS_COUNT=$?
	len $OTHER_SS; OTHER_SS_COUNT=$?
}

len()
{
	retval=0
	for i in $* 
	do
		retval=`expr $retval + 1`
	done
	return $retval 
}

killall()
{
	for pid in $*
	do
		echo killing $pid on $HOST
		kill $pid
	done
}



SS_RETVAL=1
case "$1" in
	'start')
		getpids
		if [ $MY_SS_COUNT -eq 0 ]; then
			echo "Starting SimpleSocketServer on $HOST port $SS_PORT" 
			echo "Starting SimpleSocketServer on $HOST port $SS_PORT" >> $MYLOG
			nohup java -classpath  $LOG4J_JAR org.apache.log4j.net.SimpleSocketServer $SS_PORT $LOG4J_XML >> $MYLOG 2>&1 < /dev/null &
			sleep 5
		fi
		$0 status
		SS_RETVAL=$?
		;;
	'stop')
		getpids
		killall $MY_SS
		sleep 5	
		$0 status
		if [ $? =  0 ]; then
			SS_RETVAL=1
		else
			SS_RETVAL=0
		fi
		;;
	'restart')
		echo "Restarting SimpleSocketServer" on $HOST with port $SS_PORT
		$0 stop
		sleep 5
		$0 start
		SS_RETVAL=$?
		;;
	'status')
		getpids
		if [ $MY_SS_COUNT -gt 0 ] ; then
				echo "SimpleSocketServer is running on $HOST with port $SS_PORT.  pid(s): $MY_SS"
				SS_RETVAL=0
		else
				echo "SimpleSocketServer is NOT Running on $HOST with port $SS_PORT"
		fi
		if [ $OTHER_SS_COUNT -gt 0 ] ; then
				echo "There are SimpleSocketServers running on ports other than $SS_PORT on $HOST.  pid(s): $OTHER_SS"
		fi
		;;
		*)
			echo "Usage: $0 {start|stop|restart|status}"
			SS_RETVAL=1
		;;
	esac
	exit $SS_RETVAL