lttng_ivc/tests/babeltrace/live/test_babeltrace_live.py

   1 import pytest
   2 import os
   3 import shutil
   4 import time
   5 import socket
   6
   7 import lttng_ivc.utils.ProjectFactory as ProjectFactory
   8 import lttng_ivc.utils.utils as utils
   9 import lttng_ivc.utils.runtime as Run
  10 import lttng_ivc.settings as Settings
  11
  12 """
  13 TODO: Add Command header section
  14 """
  15
  16 """
  17 First member: babeltrace label
  18 Second member: tools label
  19 """
  20 test_matrix_live = [
  21         pytest.param("babeltrace-1.3", "lttng-tools-2.7", marks=pytest.mark.xfail(reason="Flaky test or Flaky babeltrace. Is under investigation")),
  22         pytest.param("babeltrace-1.3", "lttng-tools-2.8", marks=pytest.mark.xfail(reason="Flaky test or Flaky babeltrace. Is under investigation")),
  23         pytest.param("babeltrace-1.3", "lttng-tools-2.9", marks=pytest.mark.xfail(reason="Flaky test or Flaky babeltrace. Is under investigation")),
  24         pytest.param("babeltrace-1.3", "lttng-tools-2.10", marks=pytest.mark.xfail(reason="Flaky test or Flaky babeltrace. Is under investigation")),
  25         ("babeltrace-1.4", "lttng-tools-2.7"),
  26         ("babeltrace-1.4", "lttng-tools-2.8"),
  27         ("babeltrace-1.4", "lttng-tools-2.9"),
  28         ("babeltrace-1.4", "lttng-tools-2.10"),
  29         ("babeltrace-1.5", "lttng-tools-2.7"),
  30         ("babeltrace-1.5", "lttng-tools-2.8"),
  31         ("babeltrace-1.5", "lttng-tools-2.9"),
  32         ("babeltrace-1.5", "lttng-tools-2.10"),
  33 ]
  34
  35 runtime_matrix_live = []
  36
  37 if not Settings.test_only:
  38     runtime_matrix_live = test_matrix_live
  39 else:
  40     for tup in test_matrix_live:
  41         if (tup[0] in Settings.test_only or tup[1] in
  42                 Settings.test_only):
  43             runtime_matrix_live.append(tup)
  44
  45
  46 @pytest.mark.parametrize("babeltrace_l,tools_l", runtime_matrix_live)
  47 def test_babeltrace_live(tmpdir, babeltrace_l, tools_l):
  48
  49     nb_loop = 100
  50     nb_expected_events = 100
  51
  52     babeltrace = ProjectFactory.get_precook(babeltrace_l)
  53     tools = ProjectFactory.get_precook(tools_l)
  54
  55     runtime_path = os.path.join(str(tmpdir), "runtime")
  56     app_path = os.path.join(str(tmpdir), "app")
  57     session_name = "trace"
  58
  59     with Run.get_runtime(runtime_path) as runtime:
  60         runtime.add_project(tools)
  61         runtime.add_project(babeltrace)
  62
  63         shutil.copytree(Settings.apps_gen_events_folder, app_path)
  64         runtime.run("make V=1", cwd=app_path)
  65
  66         relayd, ctrl_port, data_port, live_port = utils.relayd_spawn(runtime)
  67         sessiond = utils.sessiond_spawn(runtime)
  68
  69         hostname = socket.gethostname()
  70         url_babeltrace = "net://localhost:{}/host/{}/{}".format(live_port, hostname, session_name)
  71         url = "net://localhost:{}:{}".format(ctrl_port, data_port)
  72
  73         # Create session using mi to get path and session name
  74         runtime.run('lttng create --set-url={} {} --live'.format(url, session_name))
  75
  76         runtime.run('lttng enable-event -u tp:tptest')
  77
  78         # From now on babeltrace should be able to hook itself up.
  79         # Synchronization point is done via relayd log
  80         p_babeltrace = runtime.spawn_subprocess("babeltrace -i lttng-live {}".format(url_babeltrace))
  81
  82         # TODO: Move to settings
  83         timeout = 60
  84         # TODO: Move to settings
  85         # Make sure that babeltrace did hook itself or at least tried to.
  86         synchro_text = "Version check done using protocol"
  87         listening = False
  88         for i in range(timeout):
  89             log = runtime.get_subprocess_stderr_path(relayd)
  90             if utils.file_contains(log, synchro_text):
  91                 listening = True
  92                 break
  93             time.sleep(1)
  94
  95         if not listening:
  96             raise Exception("Babeltrace live is not listening after timeout")
  97
  98         runtime.run('lttng start')
  99
 100         # Run application
 101         cmd = './app {}'.format(nb_loop)
 102         runtime.run(cmd, cwd=app_path)
 103
 104         # Stop tracing
 105         runtime.run('lttng stop')
 106         runtime.run('lttng destroy -a')
 107
 108         # Make sure babeltrace is done reading
 109         runtime.subprocess_wait(p_babeltrace)
 110
 111         runtime.subprocess_terminate(sessiond)
 112         runtime.subprocess_terminate(relayd)
 113
 114         # Check the output from babeltrace
 115         cp_out = runtime.get_subprocess_stdout_path(p_babeltrace)
 116         assert(utils.line_count(cp_out) == nb_expected_events)