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#!/usr/bin/env python3
#
# SPDX-FileCopyrightText: 2025 Jérémie Galarneau <jeremie.galarneau@efficios.com>
#
# SPDX-License-Identifier: GPL-2.0-only
import pathlib
import sys
import os
import json
# Import in-tree test utils
test_utils_import_path = pathlib.Path(__file__).absolute().parents[3] / "utils"
sys.path.append(str(test_utils_import_path))
import lttngtest
import bt2
from trace_format_helpers import (
check_ctf2_trace_smoketest,
check_trace_event_counts,
test_local_trace_all_formats,
)
def capture_local_ust_trace(environment):
# type: (lttngtest._Environment) -> pathlib.Path
session_output_location = lttngtest.LocalSessionOutputLocation(
environment.create_temporary_directory("ctf2-trace")
)
client = lttngtest.LTTngClient(environment, log=tap.diagnostic)
session = client.create_session(output=session_output_location)
tap.diagnostic("Created session `{session_name}`".format(session_name=session.name))
channel = session.add_channel(lttngtest.TracingDomain.User)
tap.diagnostic("Created channel `{channel_name}`".format(channel_name=channel.name))
test_app = environment.launch_wait_trace_test_application(10)
# Only track the test application
session.user_vpid_process_attribute_tracker.track(test_app.vpid)
channel.add_recording_rule(lttngtest.UserTracepointEventRule("tp:tptest"))
session.start()
test_app.trace()
test_app.wait_for_exit()
session.stop()
session.destroy()
return session_output_location.path
def test_snapshot_trace_valid_ctf2():
with lttngtest.test_environment(
with_sessiond=True,
log=tap.diagnostic,
extra_env_vars={"LTTNG_EXPERIMENTAL_FORCE_CTF_2": "1"},
) as test_env:
session_output_location = lttngtest.LocalSessionOutputLocation(
test_env.create_temporary_directory("ctf2-trace-snapshot")
)
with tap.case("Capture local snapshot trace in CTF2 format"):
client = lttngtest.LTTngClient(test_env, log=tap.diagnostic)
session = client.create_session(snapshot=True)
tap.diagnostic(
"Created snapshot session `{session_name}`".format(
session_name=session.name
)
)
channel = session.add_channel(lttngtest.TracingDomain.User)
tap.diagnostic(
"Created channel `{channel_name}`".format(channel_name=channel.name)
)
test_app = test_env.launch_wait_trace_test_application(10)
# Only track the test application
session.user_vpid_process_attribute_tracker.track(test_app.vpid)
channel.add_recording_rule(lttngtest.UserTracepointEventRule("tp:tptest"))
session.start()
test_app.trace()
test_app.wait_for_exit()
session.stop()
session.record_snapshot(session_output_location)
session.destroy()
check_ctf2_trace_smoketest(session_output_location.path, tap)
with tap.case("Decode trace and count events by name"):
check_trace_event_counts(session_output_location.path, {"tp:tptest": 10})
def test_live_tracing_is_disallowed_for_ctf2():
with lttngtest.test_environment(
with_sessiond=True,
log=tap.diagnostic,
extra_env_vars={"LTTNG_EXPERIMENTAL_FORCE_CTF_2": "1"},
) as test_env:
network_output = lttngtest.NetworkSessionOutputLocation(
"net://localhost:{}:{}/".format(
test_env.lttng_relayd_control_port, test_env.lttng_relayd_data_port
)
)
with tap.case_raises(
"Live tracing is disallowed with CTF2", lttngtest.lttng.LTTngClientError
):
client = lttngtest.LTTngClient(test_env, log=tap.diagnostic)
client.create_session(live=True, output=network_output)
def test_streaming_is_disallowed_for_ctf2():
with lttngtest.test_environment(
with_sessiond=True,
log=tap.diagnostic,
extra_env_vars={"LTTNG_EXPERIMENTAL_FORCE_CTF_2": "1"},
) as test_env:
network_output = lttngtest.NetworkSessionOutputLocation(
"net://localhost:{}:{}/".format(
test_env.lttng_relayd_control_port, test_env.lttng_relayd_data_port
)
)
with tap.case_raises(
"Trace streaming is disallowed with CTF2", lttngtest.lttng.LTTngClientError
):
client = lttngtest.LTTngClient(test_env, log=tap.diagnostic)
client.create_session(output=network_output)
def test_snapshot_network_output_disallowed_for_ctf2():
with lttngtest.test_environment(
with_sessiond=True,
log=tap.diagnostic,
with_relayd=True,
extra_env_vars={"LTTNG_EXPERIMENTAL_FORCE_CTF_2": "1"},
) as test_env:
network_output = lttngtest.NetworkSessionOutputLocation(
"net://localhost:{}:{}/".format(
test_env.lttng_relayd_control_port, test_env.lttng_relayd_data_port
)
)
client = lttngtest.LTTngClient(test_env, log=tap.diagnostic)
session = client.create_session(snapshot=True)
tap.diagnostic(
"Created snapshot session `{session_name}`".format(
session_name=session.name
)
)
channel = session.add_channel(lttngtest.TracingDomain.User)
tap.diagnostic(
"Created channel `{channel_name}`".format(channel_name=channel.name)
)
test_app = test_env.launch_wait_trace_test_application(10)
# Only track the test application
session.user_vpid_process_attribute_tracker.track(test_app.vpid)
# Enable all user space events, the default for a user tracepoint event rule.
channel.add_recording_rule(lttngtest.UserTracepointEventRule())
session.start()
test_app.trace()
test_app.wait_for_exit()
session.stop()
with tap.case_raises(
"Capturing a snapshot to a network output is disallowed with CTF2",
lttngtest.lttng.LTTngClientError,
):
session.record_snapshot(network_output)
tap = lttngtest.TapGenerator(17)
tap.diagnostic("Test trace format generation (user space)")
version_parts = tuple(map(int, bt2.__version__.split(".")[:2]))
if version_parts < (2, 1):
tap.skip_all_remaining(
"Skipping test: Babeltrace 2.1.0 or later is required to run the CTF2 trace format test"
)
sys.exit(0)
pretty_expect_path = pretty_expect_path = (
pathlib.Path(__file__).absolute().parents[0] / "ust-local-trace-pretty.expect"
)
test_local_trace_all_formats(
tap=tap,
capture_local_trace=capture_local_ust_trace,
pretty_expect_path=pretty_expect_path,
enable_kernel_domain=False,
expected_events={"tp:tptest": 10},
)
test_snapshot_trace_valid_ctf2()
test_live_tracing_is_disallowed_for_ctf2()
test_streaming_is_disallowed_for_ctf2()
test_snapshot_network_output_disallowed_for_ctf2()
sys.exit(0 if tap.is_successful else 1)
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