tests/regression/tools/clear/test_live_hang.py

   1 #!/usr/bin/env python3
   2 #
   3 # Copyright (C) 2024 Kienan Stewart <kstewart@efficios.com>
   4 # SPDX-License-Identifier: GPL-2.0-only
   5 #
   6
   7 """
   8 Test for https://review.lttng.org/c/lttng-tools/+/11819
   9
  10 A live client shouldn't hang around after a session with no data has
  11 been destroyed
  12 """
  13
  14 import pathlib
  15 import socket
  16 import subprocess
  17 import sys
  18
  19 # Import in-tree test utils
  20 test_utils_import_path = pathlib.Path(__file__).absolute().parents[3] / "utils"
  21 sys.path.append(str(test_utils_import_path))
  22
  23 import lttngtest
  24 import bt2
  25
  26 tap = lttngtest.TapGenerator(1)
  27
  28
  29 def test_live_hang(tap, test_env):
  30     client = lttngtest.LTTngClient(test_env, log=tap.diagnostic)
  31
  32     # lttng create --live
  33     output = lttngtest.NetworkSessionOutputLocation(
  34         "net://localhost:{}:{}/".format(
  35             test_env.lttng_relayd_control_port, test_env.lttng_relayd_data_port
  36         )
  37     )
  38     session = client.create_session(output=output, live=True)
  39
  40     # lttng enable-event --userspace --all
  41     channel = session.add_channel(lttngtest.lttngctl.TracingDomain.User)
  42     channel.add_recording_rule(lttngtest.lttngctl.UserTracepointEventRule())
  43
  44     session.start()
  45     test_app = test_env.launch_wait_trace_test_application(100)
  46     session.stop()
  47     session.clear()
  48
  49     viewer = test_env.launch_live_viewer(session.name)
  50     viewer.wait_until_connected()
  51
  52     session.destroy()
  53
  54     viewer.wait()
  55     tap.test(
  56         True,
  57         "BT2 live viewer exited successfully",
  58     )
  59
  60
  61 with lttngtest.test_environment(
  62     with_sessiond=True, log=tap.diagnostic, with_relayd=True
  63 ) as test_env:
  64     test_live_hang(tap, test_env)
  65
  66 sys.exit(0 if tap.is_successful else 1)