Tests: Add the tracefile count test

This test validate the newly introduced tracefile count feature.  In
order to so, we enable a channel with the appropriate limits in
overwrite mode. The later constraint is to ensure that at least the last
few events are properly recorded and that we can validate that they are
present in the resulting trace (with the help of babeltrace and
babelstats).

We also validate that the tracefile count (per stream) in the trace
folder is conform to the one passed on the command line.

Signed-off-by: Christian Babeux <christian.babeux@efficios.com>
Signed-off-by: David Goulet <dgoulet@efficios.com>

diff --git a/configure.ac b/configure.ac
index 6f19e570b8f008c2aa3d3529bf10c1926d1236b4..d5733b3b4038e2c655a2d5060cb7fd4483f269fc 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -332,6 +332,7 @@ AC_CONFIG_FILES([
        tests/regression/tools/streaming/Makefile
        tests/regression/tools/filtering/Makefile
        tests/regression/tools/health/Makefile
+       tests/regression/tools/tracefile-limits/Makefile
        tests/regression/ust/Makefile
        tests/regression/ust/nprocesses/Makefile
        tests/regression/ust/high-throughput/Makefile

diff --git a/tests/fast_regression b/tests/fast_regression
index e6a883be7e8ac1fe1cfe24081d1ee1a37527bff1..db26f1c09ad74f00909f2ed2af67c4ec70eafee6 100644 (file)
--- a/tests/fast_regression
+++ b/tests/fast_regression
@@ -5,6 +5,7 @@ regression/tools/health/test_thread_exit
 regression/tools/health/test_thread_stall
 regression/tools/health/test_tp_fail
 regression/tools/streaming/test_ust
+regression/tools/tracefile-limits/test_tracefile_count
 regression/ust/before-after/test_before_after
 regression/ust/buffers-uid/test_buffers_uid
 regression/ust/periodical-metadata-flush/test_periodical_metadata_flush

diff --git a/tests/long_regression b/tests/long_regression
index c198178ec4d5dd235ce38529648679cc13a8aa74..3780bd40206c02ddbb6996672142b4cb10a99df5 100644 (file)
--- a/tests/long_regression
+++ b/tests/long_regression
@@ -5,6 +5,7 @@ regression/tools/health/test_thread_exit
 regression/tools/health/test_thread_stall
 regression/tools/health/test_tp_fail
 regression/tools/streaming/test_ust
+regression/tools/tracefile-limits/test_tracefile_count
 regression/ust/before-after/test_before_after
 regression/ust/buffers-uid/test_buffers_uid
 regression/ust/high-throughput/test_high_throughput

diff --git a/tests/regression/tools/Makefile.am b/tests/regression/tools/Makefile.am
index eef793a422e48e97a9ef2e068e6e4c034d784bf5..1b256d78e38043442f176c99e46984b454b0edb3 100644 (file)
--- a/tests/regression/tools/Makefile.am
+++ b/tests/regression/tools/Makefile.am
@@ -1 +1 @@
-SUBDIRS = streaming filtering health
+SUBDIRS = streaming filtering health tracefile-limits

diff --git a/tests/regression/tools/tracefile-limits/Makefile.am b/tests/regression/tools/tracefile-limits/Makefile.am
new file mode 100644 (file)
index 0000000..441d2bd
--- /dev/null
+++ b/tests/regression/tools/tracefile-limits/Makefile.am
@@ -0,0 +1,2 @@
+noinst_SCRIPTS = test_tracefile_count
+EXTRA_DIST = test_tracefile_count

diff --git a/tests/regression/tools/tracefile-limits/test_tracefile_count b/tests/regression/tools/tracefile-limits/test_tracefile_count
new file mode 100755 (executable)
index 0000000..41b89f0
--- /dev/null
+++ b/tests/regression/tools/tracefile-limits/test_tracefile_count
@@ -0,0 +1,174 @@
+#!/bin/bash
+#
+# Copyright (C) - 2013 Christian Babeux <christian.babeux@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="Tracefile count limits"
+
+CURDIR=$(dirname $0)/
+TESTDIR=$CURDIR/../../..
+
+TESTAPP_PATH="$TESTDIR/utils/testapp"
+TESTAPP_NAME="gen-ust-events"
+TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
+
+STATS_BIN="$TESTDIR/utils/babelstats.pl"
+NUM_TESTS=146
+
+source $TESTDIR/utils/utils.sh
+
+if [ ! -x "$TESTAPP_BIN" ]; then
+       BAIL_OUT "No UST events binary detected."
+fi
+
+function wait_apps
+{
+       while [ -n "$(pidof $TESTAPP_NAME)" ]; do
+               sleep 0.5
+       done
+       pass "Wait for applications to end"
+}
+
+function enable_lttng_channel_count_limit ()
+{
+       sess_name="$1"
+       channel_name="$2"
+       tracefile_count_limit="$3"
+
+       test_name="Enable channel $channel_name "
+       test_name+="for session $sess_name: "
+       test_name+="$tracefile_count_limit tracefiles"
+
+       $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel \
+           -u $channel_name -s $sess_name \
+           -C 4096 -W $tracefile_count_limit \
+           --overwrite >/dev/null 2>&1
+
+       ok $? "$test_name"
+}
+
+function enable_ust_lttng_event_per_channel ()
+{
+       sess_name="$1"
+       event_name="$2"
+       channel_name="$3"
+
+       test_name="Enable event $event_name "
+       test_name+="for session $sess_name "
+       test_name+="in channel $channel_name"
+
+       $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" \
+           -s $sess_name -u -c $channel_name >/dev/null 2>&1
+
+       ok $? "$test_name"
+}
+
+function validate_min_max
+{
+       stats="$1"
+       field="$2"
+       expected_min="$3"
+       expected_max="$4"
+
+       echo $stats | grep -q -E "$field $expected_min $expected_max"
+       return $?
+}
+
+function validate_file_count
+{
+       path="$1"
+       file_pattern="$2"
+       expected_max_count="$3"
+
+       count=`find $path -name "$file_pattern" -type f | wc -l`
+
+       if [ "$count" -gt "$expected_max_count" ]; then
+           fail "Validate file count: $file_pattern"
+           diag "File count: $count expected: $expected_max_count"
+       else
+           pass "Validate file count: $file_pattern"
+       fi
+}
+
+function test_tracefile_count_limit ()
+{
+       count_limit="$1"
+       trace_path=$(mktemp -d)
+       session_name=$(randstring 16 0)
+       channel_name="channel"
+       event_name="tp:tptest"
+       num_iter=1000
+       expected_max=$(($num_iter - 1))
+
+       diag "Test tracefile count limit : $count_limit tracefiles"
+
+       create_lttng_session $session_name $trace_path
+
+       enable_lttng_channel_count_limit \
+           $session_name $channel_name $count_limit
+
+       enable_ust_lttng_event_per_channel \
+           $session_name $event_name $channel_name
+
+       start_lttng_tracing $session_name
+
+       $TESTAPP_BIN $num_iter >/dev/null 2>&1 &
+
+       wait_apps
+
+       stop_lttng_tracing $session_name
+
+       destroy_lttng_session $session_name
+
+       # Validate tracing dir
+
+       num_cpu=`nproc`
+
+       for cpuno in $(seq 0 $(($num_cpu - 1)))
+       do
+               validate_file_count \
+                   $trace_path "${channel_name}_${cpuno}_*" $count_limit
+       done
+
+       # Validate tracing data
+
+       stats=`babeltrace $trace_path | $STATS_BIN --tracepoint $event_name`
+
+       validate_min_max "$stats" "intfield" "[0-9]+" "$expected_max"
+       ok $? "Trace validation - intfield"
+
+       validate_min_max "$stats" "netintfield" "[0-9]+" "$expected_max"
+       ok $? "Trace validation - netintfield"
+
+       validate_min_max "$stats" "longfield" "[0-9]+" "$expected_max"
+       ok $? "Trace validation - longfield"
+
+       rm -rf $trace_path
+}
+
+plan_tests $NUM_TESTS
+
+print_test_banner "$TEST_DESC"
+
+start_lttng_sessiond
+
+LIMITS=("1" "2" "4" "8" "10" "16" "32" "64")
+
+for limit in ${LIMITS[@]};
+do
+       test_tracefile_count_limit $limit
+done
+
+stop_lttng_sessiond