def test_consumerd_vs_sessiond(tmpdir, consumerd_l, tools_l, should_work):
"""
Scenario:
Point a lttng-tools to a consumerd of another version and see what
happen. We do not expect anything good to come out of this since for
now lttng-tools(2.10) no versionning exist between sessiond and
consumerd.
"""
nb_event = 100
consumerd = ProjectFactory.get_precook(consumerd_l)
tools = ProjectFactory.get_precook(tools_l)
babeltrace = ProjectFactory.get_precook(Settings.default_babeltrace)
app_path = os.path.join(str(tmpdir), "app")
replacement_consumerd = utils.find_file(consumerd.installation_path,
"lttng-consumerd")
assert replacement_consumerd
c_dict = {"32bit": "--consumerd32-path", "64bit": "--consumerd64-path"}
platform_type = platform.architecture()[0]
sessiond_opt_args = "{}={}".format(c_dict[platform_type],
replacement_consumerd)
with Run.get_runtime(str(tmpdir)) as runtime:
runtime.add_project(tools)
runtime.add_project(babeltrace)
shutil.copytree(Settings.apps_gen_events_folder, app_path)
runtime.run("make V=1", cwd=app_path)
utils.sessiond_spawn(runtime, sessiond_opt_args)
# Consumer is only called on channel creation
runtime.run("lttng create")
try:
runtime.run("lttng enable-event -u tp:tptest", timeout=5)
runtime.run("lttng start", timeout=5)
# Run application
cmd = "./app {}".format(100)
runtime.run(cmd, cwd=app_path)
runtime.run("lttng stop", timeout=5)
runtime.run("lttng destroy -a", timeout=5)
cp, cp_out, cp_err = runtime.run("babeltrace {}".format(
runtime.lttng_home))
assert utils.line_count(cp_out) == nb_event
except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e:
if should_work:
raise e
else:
# Expecting some error
return
if not should_work:
raise Exception("Supposed to fail")
def __init__(self, label, git_path, sha1, tmpdir):
super(Lttng_tools, self).__init__(label=label, git_path=git_path,
sha1=sha1, tmpdir=tmpdir)
self.add_special_env_variable("LTTNG_SESSION_CONFIG_XSD_PATH",
os.path.join(self.installation_path, "share/xml/lttng/"))
# Find the mi xsd
for xsd in Settings.mi_xsd_file_name:
mi = find_file(self.source_path, xsd)
if mi:
break
if not mi:
raise Exception("MI xsd not found")
self.mi_xsd = mi
def test_relayd_vs_consumerd_streaming_regenerate_metadata(
tmpdir, relayd_label, consumerd_label, command, scenario):
nb_loop = 100
nb_expected_events = 100
# Prepare environment
relayd = ProjectFactory.get_precook(relayd_label)
consumerd = ProjectFactory.get_precook(consumerd_label)
babeltrace = ProjectFactory.get_precook(Settings.default_babeltrace)
relayd_runtime_path = os.path.join(str(tmpdir), "relayd")
consumerd_runtime_path = os.path.join(str(tmpdir), "consumerd")
app_path = os.path.join(str(tmpdir), "app")
with Run.get_runtime(
relayd_runtime_path) as runtime_relayd, Run.get_runtime(
consumerd_runtime_path) as runtime_consumerd:
runtime_relayd.add_project(relayd)
runtime_relayd.add_project(babeltrace)
runtime_consumerd.add_project(consumerd)
babeltrace_cmd = "babeltrace {}".format(runtime_relayd.lttng_home)
# Make application using the ust runtime
shutil.copytree(Settings.apps_gen_events_folder, app_path)
runtime_consumerd.run("make V=1", cwd=app_path)
# Start lttng-relayd
relayd, ctrl_port, data_port, live_port = utils.relayd_spawn(
runtime_relayd)
sessiond = utils.sessiond_spawn(runtime_consumerd)
url = "net://localhost:{}:{}".format(ctrl_port, data_port)
# Create session using mi to get path and session name
runtime_consumerd.run("lttng create --set-url={} trace ".format(url))
runtime_consumerd.run("lttng enable-event -u tp:tptest")
runtime_consumerd.run("lttng start")
# Run application
cmd = "./app {}".format(nb_loop)
runtime_consumerd.run(cmd, cwd=app_path)
# Stop tracing
runtime_consumerd.run("lttng stop")
# Empty the metadata file
metadata = utils.find_file(runtime_relayd.lttng_home, "metadata")
open(metadata, "w").close()
# Babeltrace should never be able to parse the trace
with pytest.raises(subprocess.CalledProcessError):
runtime_relayd.run(babeltrace_cmd)
runtime_consumerd.run("lttng start")
# TODO: rework this a bit to differentiate each errors and rework how
# the condition are meet
if scenario in ("Unsupported by tools", "Unsupported by relayd"):
with pytest.raises(subprocess.CalledProcessError):
runtime_consumerd.run("lttng {}".format(command))
# Make sure everything looks good on this side
sessiond = runtime_consumerd.subprocess_terminate(sessiond)
if sessiond.returncode != 0:
pytest.fail("Return value of sessiond is not zero")
relayd = runtime_relayd.subprocess_terminate(relayd)
if relayd.returncode != 0:
pytest.fail("Return value of relayd is not zero")
return
runtime_consumerd.run("lttng {}".format(command))
runtime_consumerd.run("lttng stop")
runtime_consumerd.run("lttng destroy -a")
# Make sure everything looks good
sessiond = runtime_consumerd.subprocess_terminate(sessiond)
if sessiond.returncode != 0:
pytest.fail("Return value of sessiond is not zero")
relayd = runtime_relayd.subprocess_terminate(relayd)
if relayd.returncode != 0:
pytest.fail("Return value of relayd is not zero")
# Read trace with babeltrace and check for event count via number of line
cp_process, cp_out, cp_err = runtime_relayd.run(babeltrace_cmd)
assert utils.line_count(cp_out) == nb_expected_events