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#!/bin/bash
#
# SPDX-FileCopyrightText: 2017 Jonathan Rajotte <jonathan.rajotte-julien@efficiso.com>>
#
# SPDX-License-Identifier: LGPL-2.1-only
TEST_DESC="Notification"
CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/../../../
TESTPOINT=$(readlink -f ${CURDIR}/.libs/libpause_consumer.so)
TESTAPP_PATH="$TESTDIR/utils/testapp"
TESTAPP_NAME="gen-ust-events"
TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
TESTAPP_STATE_FILE="$(mktemp -u -t tmp.test_notification_multi_app_state_file.XXXXXX)"
NR_ITER=1000
NR_USEC_WAIT=5
SESSION_NAME="my_session"
CHANNEL_NAME="my_channel"
DIR=$(readlink -f $TESTDIR)
PAGE_SIZE=$(getconf PAGE_SIZE)
NUM_TEST_UST=50
NUM_TEST_KERNEL=50
NUM_TESTS=$(($NUM_TEST_UST + $NUM_TEST_KERNEL))
source $TESTDIR/utils/utils.sh
source $CURDIR/util_event_generator.sh
consumerd_pipe=()
file_sync_after_first_event=$(mktemp -u -t tmp.test_notification_multi_app_sync_after_first.XXXXXX)
# MUST set TESTDIR before calling those functions
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
app_pids=()
function start_client {
local pid=-1
local output_file=$1
local session_name=$2
local channel_name=$3
local domain_type=$4
local buffer_usage_type=$5
local buffer_usage_threshold_type=$6
local buffer_usage_threshold_value=$7
local nr_expected_notification=$8
local use_action_list=$9
${CURDIR}/base_client ${session_name} ${channel_name} ${domain_type} ${buffer_usage_type} ${buffer_usage_threshold_type} ${buffer_usage_threshold_value} ${nr_expected_notification} ${use_action_list} > ${output_file} &
pid=$!
app_pids+=("$pid")
}
function wait_for_message ()
{
local directory=$1
local file_pattern=$2
local message=$3
for file in $directory/${file_pattern}*; do
while(true); do
# Check for "error" message
grep -q "error:" ${file}
app_error=$?
if [ $app_error -eq "0" ] ; then
# An error occurred
fail "Waiting message: error logged see file content: ${message}, ${file}"
return 1
fi
grep -q "${message}" ${file}
if [[ "$?" -ne "0" ]]; then
# Lookup failed restart loop
diag "Lookup failed sleep and retry grep for: ${message}, ${file}"
sleep 0.25
continue
fi
break
done
done
pass "Message received: ${message}"
return 0
}
function print_errors ()
{
local directory=$1
local file_pattern=$2
for file in $directory/${file_pattern}*; do
# Check for "error" message
error_message=$(grep "error:" ${file})
if [[ "${error_message}x" != "x" ]]; then
diag "Errors for application ${file}:"
diag "${error_message}"
fi
done
}
function comm_consumerd ()
{
local message=$1
local pipe=$2
echo -ne "${message}" > "${pipe}"
}
function stop_consumerd ()
{
local pipe=$1
comm_consumerd "1" "$pipe"
}
function resume_consumerd ()
{
local pipe=$1
comm_consumerd "\0" "$pipe"
}
function test_multi_app ()
{
local domain_type=$1
local event_generator_pid=$2
local app_pids=()
local low_output_file_pattern="low_app_output_file_"
local high_output_file_pattern="high_app_output_file_"
local output_dir=$(mktemp -d -t "tmp.test_${FUNCNAME[0]}_output_dir.XXXXXX")
local testpoint_base_path=$(readlink -f "$output_dir/lttng.t_p_n_multi_app")
local testpoint_pipe_path=$(TMPDIR="$output_dir" mktemp -u -t "lttng.t_p_n_multi_app.XXXXXX")
local nr_notification_expected=5
local nr_client_app=50
local domain_string=""
local event_name=""
case $domain_type in
ust)
domain_string=LTTNG_DOMAIN_UST
event_name="tp:tptest"
;;
kernel)
domain_string=LTTNG_DOMAIN_KERNEL
event_name="lttng_test_filter_event"
;;
*)
fail "Invalid domain type"
exit 1
;;
esac
# Setup
LTTNG_SESSIOND_ENV_VARS="LTTNG_TESTPOINT_ENABLE=1 CONSUMER_PAUSE_PIPE_PATH=${testpoint_pipe_path} LD_PRELOAD=${TESTPOINT}"
start_lttng_sessiond
create_lttng_session_ok $SESSION_NAME $TRACE_PATH
enable_${domain_type}_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME --subbuf-size=$PAGE_SIZE
enable_${domain_type}_lttng_event_ok $SESSION_NAME $event_name $CHANNEL_NAME
# Fetch consumerd testpoint pipe information
# This is needed since the testpoint create a pipe with the consumer type suffixed
consumerd_pipe=()
for f in "$testpoint_pipe_path"*; do
consumerd_pipe+=("$f")
done
for (( i = 0; i < $nr_client_app; i++ )); do
low_app_output_file=$output_dir/${low_output_file_pattern}${i}
high_app_output_file=$output_dir/${high_output_file_pattern}${i}
start_client $low_app_output_file $SESSION_NAME $CHANNEL_NAME $domain_string LOW RATIO 0.0 $nr_notification_expected $(( $i % 2))
start_client $high_app_output_file $SESSION_NAME $CHANNEL_NAME $domain_string HIGH RATIO 0.420 $nr_notification_expected $(( $i % 2))
done
wait_for_message $output_dir "${low_output_file_pattern}" "sync: ready"
wait_for_message $output_dir "${high_output_file_pattern}" "sync: ready"
# Test notification reception
for (( i = 0; i < $nr_notification_expected; i++ )); do
# Stop consumerd consumption to force high notification
start_lttng_tracing_ok $SESSION_NAME
for pipe in "${consumerd_pipe[@]}"; do
stop_consumerd "${pipe}"
done
wait_for_message $output_dir "${high_output_file_pattern}" "notification: high $i"
# Put application in suspend mode to prevent double low
# notification and synchronize on state file.
kill -s SIGUSR1 $event_generator_pid
while [ ! -f "${TESTAPP_STATE_FILE}" ]; do
sleep 0.5
done
# Resume consumerd
for pipe in "${consumerd_pipe[@]}"; do
resume_consumerd "${pipe}"
done
# Stop tracing forcing full buffer consumption
stop_lttng_tracing_ok $SESSION_NAME
# Check for notifications reception
wait_for_message $output_dir "${low_output_file_pattern}" "notification: low $i"
ret=$?
ok $ret "Notifications $i received"
if [[ $ret -ne "0" ]]; then
# Error occurred bail out
break;
fi
# Put application in active mode and synchronize on state file.
kill -s SIGUSR1 $event_generator_pid
while [ -f "${TESTAPP_STATE_FILE}" ]; do
sleep 0.5
done
done
wait_for_message $output_dir "${low_output_file_pattern}" "exit: 0"
ret=$?
ok $ret "Application for low notification terminated normally"
if [[ $ret -ne "0" ]]; then
print_errors $output_dir "${low_output_file_pattern}"
fi
wait_for_message $output_dir "${high_output_file_pattern}" "exit: 0"
ret=$?
ok $ret "Application for high notification terminated normally"
if [[ $ret -ne "0" ]]; then
print_errors $output_dir "${high_output_file_pattern}"
fi
destroy_lttng_session_ok $SESSION_NAME
stop_lttng_sessiond
for pipe in "${consumerd_pipe[@]}"; do
rm -rf "${pipe}"
done
rm -rf $output_dir
}
function test_multi_app_ust ()
{
diag "Multi client app UST notification"
ust_event_generator "$TESTAPP_BIN" "$TESTAPP_STATE_FILE" &
local generator_pid=$!
test_multi_app ust $generator_pid
kill -s SIGUSR2 $generator_pid 2> /dev/null
wait $generator_pid 2> /dev/null
rm -rf ${TESTAPP_STATE_FILE} 2> /dev/null
}
function test_multi_app_kernel ()
{
diag "Multi client app kernel notification"
modprobe lttng-test
kernel_event_generator generate_filter_events $TESTAPP_STATE_FILE &
local generator_pid=$!
test_multi_app kernel $generator_pid
kill -s SIGUSR2 $generator_pid 2> /dev/null
wait $generator_pid 2> /dev/null
rm -rf ${TESTAPP_STATE_FILE} 2> /dev/null
modprobe --remove lttng-test
}
function test_on_register_evaluation_ust ()
{
diag "On register notification UST"
# Start app in infinite loop
ust_event_generator "$TESTAPP_BIN" "$TESTAPP_STATE_FILE" &
local generator_pid=$!
test_on_register_evaluation ust $generator_pid
kill -s SIGUSR2 $generator_pid 2> /dev/null
wait $generator_pid 2> /dev/null
rm -rf ${TESTAPP_STATE_FILE} 2> /dev/null
}
function test_on_register_evaluation_kernel()
{
diag "On register notification kernel"
modprobe lttng-test
kernel_event_generator generate_filter_events $TESTAPP_STATE_FILE &
local generator_pid=$!
test_on_register_evaluation kernel $generator_pid
kill -s SIGUSR2 $generator_pid 2> /dev/null
wait $generator_pid 2> /dev/null
rm -rf ${TESTAPP_STATE_FILE} 2> /dev/null
modprobe --remove lttng-test
}
function test_on_register_evaluation ()
{
local domain_type=$1
local event_generator_pid=$2
local app_pids=()
local high_output_file_pattern="high_app_output_file_on_register_evaluation"
local output_dir=$(mktemp -d -t "tmp.test_${FUNCNAME[0]}_output_dir.XXXXXX")
local testpoint_base_path=$(readlink -f "$output_dir/lttng.t_p_n_register_evaluation")
local testpoint_pipe_path=$(TMPDIR="$output_dir" mktemp -u -t "lttng.t_p_n_register_evaluation.XXXXXX")
local domain_string=""
local event_name=""
case $domain_type in
ust)
domain_string=LTTNG_DOMAIN_UST
event_name="tp:tptest"
;;
kernel)
domain_string=LTTNG_DOMAIN_KERNEL
event_name="lttng_test_filter_event"
;;
*)
fail "Invalid domain type"
exit 1
;;
esac
# Setup
LTTNG_SESSIOND_ENV_VARS="LTTNG_TESTPOINT_ENABLE=1 CONSUMER_PAUSE_PIPE_PATH=${testpoint_pipe_path} LD_PRELOAD=${TESTPOINT}"
start_lttng_sessiond
create_lttng_session_ok $SESSION_NAME $TRACE_PATH
enable_${domain_type}_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME --subbuf-size=$PAGE_SIZE
enable_${domain_type}_lttng_event_ok $SESSION_NAME $event_name $CHANNEL_NAME
# Fetch consumerd testpoint pipe information
# This is needed since the testpoint create a pipe with the consumer type suffixed
consumerd_pipe=()
for f in "$testpoint_pipe_path"*; do
consumerd_pipe+=("$f")
done
high_app_output_file=${high_output_file_pattern}.first_receiver
high_app_output_path=$output_dir/${high_app_output_file}
start_client $high_app_output_path $SESSION_NAME $CHANNEL_NAME $domain_string HIGH RATIO 0.420 1 0
wait_for_message $output_dir "${high_app_output_file}" "sync: ready"
# Stop consumerd consumption to force high notification
start_lttng_tracing_ok $SESSION_NAME
for pipe in "${consumerd_pipe[@]}"; do
stop_consumerd "${pipe}"
done
wait_for_message $output_dir "${high_app_output_file}" "notification: high 0"
# Start a second receiver, the receiver should receive a high
# notification on subscription
high_app_output_file=${high_output_file_pattern}.second_receiver
high_app_output_path=$output_dir/${high_app_output_file}
start_client $high_app_output_path $SESSION_NAME $CHANNEL_NAME $domain_string HIGH RATIO 0.420 1 0
wait_for_message $output_dir "${high_app_output_file}" "sync: ready"
wait_for_message $output_dir "${high_app_output_file}" "notification: high 0"
# Resume consumerd
for pipe in "${consumerd_pipe[@]}"; do
resume_consumerd "${pipe}"
done
wait_for_message $output_dir "${high_output_file_pattern}" "exit: 0"
ret=$?
ok $ret "Application for high notification terminated normally"
if [[ $ret -ne "0" ]]; then
# Keep the file
print_errors "${high_output_file_pattern}"
fi
destroy_lttng_session_ok $SESSION_NAME
stop_lttng_sessiond
kill -s SIGUSR2 $generator_pid 2> /dev/null
wait $generator_pid 2> /dev/null
for pipe in "${consumerd_pipe[@]}"; do
rm -rf "${pipe}"
done
rm -rf "$output_dir"
}
TESTS=(
test_multi_app_ust
test_on_register_evaluation_ust
)
check_skip_kernel_test "$NUM_TEST_KERNEL" "Skipping kernel multi-app notification tests." || {
validate_lttng_modules_present
TESTS+=(
test_multi_app_kernel
test_on_register_evaluation_kernel
)
}
for fct_test in ${TESTS[@]};
do
TRACE_PATH=$(mktemp -d -t tmp.test_notification_multi_app_trace_path.XXXXXX)
${fct_test}
if [ $? -ne 0 ]; then
break;
fi
# Only delete if successful
rm -rf $TRACE_PATH
done
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