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#!/bin/bash
#
# SPDX-FileCopyrightText: 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
#
# SPDX-License-Identifier: LGPL-2.1-only
TEST_DESC="Metadata env - Kernel space tracing"
CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../../..
EVENT_NAME="lttng_test_filter_event"
TRACE_PATH=$(mktemp -d -t tmp.test_metadata_env_kernel_trace_path.XXXXXX)
NUM_TESTS=15
source "$TESTDIR/utils/utils.sh"
# Fetch utils functions common to ust and kernel tests.
source "$CURDIR/utils.sh"
function test_kernel ()
{
local metadata_path
local metadata
local metadata_env
local expected_path="${TRACE_PATH}/lttng-traces"
local session_name="kernel"
metadata=$(mktemp -t "tmp.test_kernel_metadata.XXXXXX")
metadata_env=$(mktemp -t "tmp.test_kernel_metadata_env.XXXXXX")
diag "Test Kernel metadata env field"
create_lttng_session_ok "$session_name"
enable_kernel_lttng_event_ok "$session_name" "$EVENT_NAME"
start_lttng_tracing_ok "$session_name"
echo -n "10" > /proc/lttng-test-filter-event
stop_lttng_tracing_ok "$session_name"
destroy_lttng_session_ok "$session_name"
# bt1 accepts only a directory while bt2 accepts either the metadata
# file directly or a directory with an immediate metadata file.
# Settle for the common denominator.
metadata_path=$(find "${expected_path}/${session_name}"* -name "metadata")
metadata_path=$(dirname "$metadata_path")
_run_babeltrace_cmd --output-format=ctf-metadata "${metadata_path}" > "$metadata"
# Extract "env" scope
awk '/env {/,/};/' < "$metadata" > "$metadata_env"
# Construct the expected path from the env metadata and use it to
# validate that all information make sense. This information is present
# to allow trace viewer to recreate the same directory hierarchy.
# Trace name
local trace_name
trace_name=$(get_env_value "$metadata_env" trace_name)
ok $? "Extracting trace_name from env metadata: \`$trace_name\`"
expected_path="${expected_path}/${trace_name}"
# Session creation time
local trace_creation_datetime
trace_creation_datetime=$(get_env_value "$metadata_env" trace_creation_datetime)
ok $? "Extracting trace_creation_datetime from env metadata: \`$trace_creation_datetime\`"
trace_creation_datetime=$(iso8601_to_lttng_dir_datetime "$trace_creation_datetime")
expected_path="${expected_path}-${trace_creation_datetime}"
# Domain
local domain
domain=$(get_env_value "$metadata_env" domain)
ok $? "Extracting domain from env metadata: \`$domain\`"
expected_path="${expected_path}/${domain}"
# Append "metadata" and test that we find the file.
expected_path="${expected_path}/metadata"
test -f "$expected_path"
ok $? "Reconstructed path from metadata is an existing file: \`$expected_path\`"
# Hostname
# The hostname is not part of the lttng hierarchy still we can test for
# its validity here.
local hostname
hostname=$(get_env_value "$metadata_env" hostname)
ok $? "Extracting hostname from env metadata: \`$hostname\`"
is "$hostname" "$(hostname)" "Extracted hostname matches current hostname"
rm -f "$metadata"
rm -f "$metadata_env"
}
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
bail_out_if_no_babeltrace
check_skip_kernel_test "$NUM_TESTS" "Skipping kernel metadata tests." ||
{
lttng_modules_loaded_fail
validate_lttng_modules_present
modprobe lttng-test
# Use LTTNG_HOME since we want the complete "default" lttng directory hierarchy
# with "<session_name>-<datetime>/...".
export LTTNG_HOME="$TRACE_PATH"
start_lttng_sessiond
tests=( test_kernel )
for fct_test in "${tests[@]}";
do
${fct_test}
done
modprobe --remove lttng-test
stop_lttng_sessiond
lttng_modules_loaded_fail
unset LTTNG_HOME
}
rm -rf "$TRACE_PATH"
|
