#!/bin/bash
#
# Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
#
# This library is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; version 2.1 of the License.
#
# This library 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
TEST_DESC="UST tracer - Testing low events throughput"

CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/../../..
BIN_NAME="gen-events"
SESSION_NAME="low-throughput"
EVENT_NAME="tp:slow"

source $TESTDIR/utils/utils.sh

print_test_banner "$TEST_DESC"

if [ ! -x "$CURDIR/$BIN_NAME" ]; then
	echo -e "No UST nevents binary detected. Passing."
	exit 0
fi

TRACE_PATH=$(mktemp -d)

# MUST set TESTDIR before calling those functions

start_lttng_sessiond

create_lttng_session $SESSION_NAME $TRACE_PATH

enable_ust_lttng_event $SESSION_NAME $EVENT_NAME
start_lttng_tracing $SESSION_NAME

# This is going to take 20 minutes
./$CURDIR/$BIN_NAME >/dev/null 2>&1

stop_lttng_tracing $SESSION_NAME
destroy_lttng_session $SESSION_NAME

stop_lttng_sessiond

# Validate test

last_val=0
out=0

babeltrace $TRACE_PATH | while read event;
do
	val=$(echo $event | cut -f10 -d" ")
	val=${val%?}
	th=$(echo $event | cut -f13 -d " ")

	if [ $th = '"one"' ]; then
		((last_val++))
		# We expect here a continous value from 1 to 20
		if [ $last_val -ne $val ]; then
			echo -n "[-] One minute event failed ($val) "
			out=1
			break
		fi
	elif [ $th = '"ten"' ]; then
		# Test 10 minutes counter
		if [ $val -ne 10 ]; then
			# Test 20 minutes counter
			if [ $val -ne 20 ]; then
				echo -n "[-] Ten minutes event failed ($val) "
				out=1
				break
			fi
		fi
	elif [ $th = '"twenty"' ]; then
		# Test 20 minutes counter
		if [ $val -ne 20 ]; then
			echo -n "[-] Twenty minutes event failed ($val) "
			out=1
			break
		fi
	fi
done

if [ $out -eq 0 ]; then
	echo -n "Trace is coherent... "
	print_ok
else
	print_fail
fi

rm -rf $TRACE_PATH

exit $out