#!/bin/bash
# This script installs netperf and runs the regression tests
###SHELLPACK preamble netperfmulti-bench 2.4.5
PROTOCOLS="UDP_STREAM TCP_STREAM"
NETPERFMULTI_BUFFER_SIZE="256"

TASKSET_SERVER=
TASKSET_CLIENT=
SERVER_HOST=127.0.0.1
if [ "$REMOTE_SERVER_HOST" != "" ]; then
	SERVER_HOST=$REMOTE_SERVER_HOST
fi

###SHELLPACK parseargBegin
###SHELLPACK parseargInstall
###SHELLPACK parseargBindings
###SHELLPACK parseargParam    --iterations   NETPERFMULTI_ITERATIONS
###SHELLPACK parseargParam    --protocol     NETPERFMULTI_PROTOCOL
###SHELLPACK parseargParam    --buffer-size  NETPERFMULTI_BUFFER_SIZE
###SHELLPACK parseargParam    --duration     NETPERFMULTI_DURATION
###SHELLPACK parseargParam    --min-threads  NETPERFMULTI_MIN_THREADS
###SHELLPACK parseargParam    --max-threads  NETPERFMULTI_MAX_THREADS
###SHELLPACK parseargEnd

###SHELLPACK check_install_required netperfmulti-${VERSION}

###SHELLPACK monitor_hooks

cd $SHELLPACK_SOURCES/netperfmulti-${VERSION}-installed || die Failed to cd to netperf directory

PORT_OFFSET=12864

server_start() {
	INSTANCES=$1
	if [ "$REMOTE_SERVER_HOST" != "" ]; then
		mmtests_server_ctl start --serverside-name $NETPERFMULTI_PROTOCOL-$NETPERFMULTI_BUFFER_SIZE-$INSTANCES
		return
	fi

	echo Starting $INSTANCES server instances
	for i in `seq 1 $INSTANCES`; do
		$TASKSET_SERVER $NETROOT/bin/netserver -p $((PORT_OFFSET+i)) || die Failed to start netserver
	done
	sleep 2
}

server_stop() {
	INSTANCES=$1
	if [ "$REMOTE_SERVER_HOST" != "" ]; then
		mmtests_server_ctl stop --serverside-name $NETPERFMULTI_PROTOCOL-$NETPERFMULTI_BUFFER_SIZE-$INSTANCES
		return
	fi
	echo Stopping all server instances
	killall netserver
}

client_start() {
	INSTANCES=$1
	echo Starting $INSTANCES client instances
	for i in `seq 1 $INSTANCES`; do
		eval $TASKSET_CLIENT $NETROOT/bin/netperf \
			-t $NETPERFMULTI_PROTOCOL \
			-l $NETPERFMULTI_DURATION \
			-H $SERVER_HOST -p $((PORT_OFFSET+i)) \
			-- \
			$SIZE_OPT \
			$EXTRA > $SHELLPACK_TEMP/netperfmulti-instance.$i 2>&1 &
		echo $! > $SHELLPACK_TEMP/netperfmulti-pids.$i
	done
}

export REMOTE_SERVER_SCRIPT=$SCRIPTDIR/shellpacks/shellpack-bench-netperfmulti
NETROOT=$SHELLPACK_SOURCES/netperfmulti-${VERSION}-installed 
case $SERVERSIDE_COMMAND in
start)
	INSTANCES=`echo $SERVERSIDE_NAME | awk -F - '{print $NF}'`
	server_stop $INSTANCES

	echo Starting server $SERVERSIDE_NAME
	mmtests_activity netperfmulti-$SERVERSIDE_NAME
	monitor_pre_hook $LOGDIR_RESULTS netperfmulti-$SERVERSIDE_NAME
	server_start $INSTANCES
	exit $SHELLPACK_SUCCESS
	;;
stop)
	INSTANCES=`echo $SERVERSIDE_NAME | awk -F - '{print $NF}'`
	monitor_post_hook $LOGDIR_RESULTS netperfmulti-$SERVERSIDE_NAME
	server_stop $INSTANCES
	exit $SHELLPACK_SUCCESS
	;;
flush)
	exit $SHELLPACK_SUCCESS
	;;
none)
	server_stop
	;;
*)
	die Unrecognised server-side command
	;;
esac

echo $NETPERFMULTI_PROTOCOL > $LOGDIR_RESULTS/protocols
EXTRA=
if [ "$NETPERFMULTI_PROTOCOL" = "UDP_STREAM" ]; then
	EXTRA="-P 15895"
fi

###SHELLPACK threads_huge_stride_begin $NETPERFMULTI_MIN_THREADS $NETPERFMULTI_MAX_THREADS
	server_start $NR_THREADS
	###SHELLPACK iteration_begin $NETPERFMULTI_ITERATIONS
		mmtests_activity $NETPERFMULTI_BUFFER_SIZE-$NR_THREADS-$ITERATION
		SIZE_OPT=
		if [ "$NETPERFMULTI_PROTOCOL" = "UDP_STREAM" -o "$NETPERFMULTI_PROTOCOL" = "TCP_STREAM" -o "$NETPERFMULTI_PROTOCOL" = "STREAM_STREAM" ]; then
			SIZE_OPT="-m $NETPERFMULTI_BUFFER_SIZE -M $NETPERFMULTI_BUFFER_SIZE"
		fi
		if [ "$NETPERFMULTI_PROTOCOL" = "UDP_RR" -o "$NETPERFMULTI_PROTOCOL" = "TCP_RR" ]; then
			SIZE_OPT="-r $NETPERFMULTI_BUFFER_SIZE"
		fi
	
		echo Running test $NETPERFMULTI_PROTOCOL $NR_THREADS threads iteration $ITERATION/$NETPERFMULTI_ITERATIONS size $NETPERFMULTI_BUFFER_SIZE
		monitor_pre_hook $LOGDIR_RESULTS $NETPERFMULTI_BUFFER_SIZE
		client_start $NR_THREADS
		echo -n Waiting on pids to exit
		for i in `seq 1 $NR_THREADS`; do
			CLIENT_PID=`cat $SHELLPACK_TEMP/netperfmulti-pids.$i`
			wait $CLIENT_PID
			if [ $? -ne 0 ]; then
				cat $SHELLPACK_TEMP/netperfmulti-instance.$i
				die PID $CLIENT_PID exited with an error
			fi
			echo -n .
			rm $SHELLPACK_TEMP/netperfmulti-pids.$i
		done
		echo
		monitor_post_hook $LOGDIR_RESULTS $NETPERFMULTI_BUFFER_SIZE

		RESULT_FILE=$LOGDIR_RESULTS/$NETPERFMULTI_PROTOCOL-$NR_THREADS.$ITERATION
		echo -n > $RESULT_FILE
		for i in `seq 1 $NR_THREADS`; do
			echo instance $i >> $RESULT_FILE
			cat $SHELLPACK_TEMP/netperfmulti-instance.$i >> $RESULT_FILE
			rm $SHELLPACK_TEMP/netperfmulti-instance.$i
		done
		cat $RESULT_FILE
	###SHELLPACK iteration_end
	server_stop $NR_THREADS
###SHELLPACK threads_stride_end

exit $SHELLPACK_SUCCESS
