Tests: Add "daemon" ust regression test
authorJérémie Galarneau <jeremie.galarneau@efficios.com>
Tue, 26 Mar 2013 00:28:32 +0000 (20:28 -0400)
committerDavid Goulet <dgoulet@efficios.com>
Wed, 27 Mar 2013 14:33:42 +0000 (10:33 -0400)
Based on the "daemon" test formerly part of lttng-ust.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Signed-off-by: David Goulet <dgoulet@efficios.com>
.gitignore
configure.ac
tests/fast_regression
tests/long_regression
tests/regression/ust/Makefile.am
tests/regression/ust/daemon/Makefile.am [new file with mode: 0644]
tests/regression/ust/daemon/README [new file with mode: 0644]
tests/regression/ust/daemon/daemon.c [new file with mode: 0644]
tests/regression/ust/daemon/test_daemon [new file with mode: 0755]
tests/regression/ust/daemon/test_daemon.py [new file with mode: 0644]
tests/regression/ust/daemon/ust_tests_daemon.h [new file with mode: 0644]

index b9c3ec867ef2bee729f37cba3836d98d8a78051d..5ea488e26c2c4f07c1ad6824dce1a9482efed7ee 100644 (file)
@@ -67,5 +67,6 @@ tests/regression/ust/overlap/demo/demo
 tests/regression/ust/linking/demo_builtin
 tests/regression/ust/linking/demo_static
 tests/regression/ust/linking/demo
+tests/regression/ust/daemon/daemon
 
 benchmark/
index 5494cd80abae513ab5be7f86dd7dffc6647db361..109e4fcb5c8dfd8fb58c9aaa814a051c2ffb5ba9 100644 (file)
@@ -333,6 +333,7 @@ AC_CONFIG_FILES([
        tests/regression/ust/overlap/Makefile
        tests/regression/ust/overlap/demo/Makefile
        tests/regression/ust/linking/Makefile
+       tests/regression/ust/daemon/Makefile
        tests/unit/Makefile
        tests/utils/Makefile
        tests/utils/tap/Makefile
index b700fa5c43ab4a144388c391878a6c3a57e3422f..394dbfdd2900e405f4f003238a5d1db4972176b1 100644 (file)
@@ -13,3 +13,4 @@ regression/ust/overlap/test_overlap
 regression/ust/test_event_basic
 regression/ust/test_event_wildcard
 regression/ust/linking/test_linking
+regression/ust/daemon/test_daemon
index 1fb68c3ccfb9faa2fdff362d4b0bd7c261e6332a..11872706cb87f8fc3dba297296a46a6ac0c01239 100644 (file)
@@ -15,3 +15,4 @@ regression/ust/overlap/test_overlap
 regression/ust/test_event_basic
 regression/ust/test_event_wildcard
 regression/ust/linking/test_linking
+regression/ust/daemon/test_daemon
index 74db00bf410e132ac816df81f90ffee5c29b822d..2dd6fe9b4fd0b01d3b0f0c932533cdaa17fbf720 100644 (file)
@@ -1,6 +1,6 @@
 if HAVE_LIBLTTNG_UST_CTL
 SUBDIRS = nprocesses high-throughput low-throughput before-after multi-session \
-               overlap buffers-uid linking
+               overlap buffers-uid linking daemon
 
 EXTRA_DIST = test_event_basic test_event_wildcard
 
diff --git a/tests/regression/ust/daemon/Makefile.am b/tests/regression/ust/daemon/Makefile.am
new file mode 100644 (file)
index 0000000..d457c06
--- /dev/null
@@ -0,0 +1,15 @@
+AM_CPPFLAGS = -I$(srcdir)
+
+noinst_PROGRAMS = daemon
+daemon_SOURCES = daemon.c ust_tests_daemon.h
+daemon_LDADD = -llttng-ust -llttng-ust-fork
+
+if LTTNG_TOOLS_BUILD_WITH_LIBDL
+daemon_LDADD += -ldl
+endif
+if LTTNG_TOOLS_BUILD_WITH_LIBC_DL
+daemon_LDADD += -lc
+endif
+
+noinst_SCRIPTS = test_daemon test_daemon.py
+EXTRA_DIST = test_daemon test_daemon.py
diff --git a/tests/regression/ust/daemon/README b/tests/regression/ust/daemon/README
new file mode 100644 (file)
index 0000000..64659c6
--- /dev/null
@@ -0,0 +1,27 @@
+Daemon tracing test
+-------------------
+
+This test checks if tracing works correctly in a child process created by a
+call to daemon().
+
+DESCRIPTION
+-----------
+
+A session daemon is launched if none are found to be running. The test_daemon
+script then creates a session, enables all events from the userspace domain,
+starts the session and launches the daemon binary.
+
+The daemon binary, in turn, triggers tracepoints both from the original and
+resulting daemon process.
+
+The test_daemon script then parses the resulting trace and ensures that the
+events were correctly recorded and were logged with the right PIDs.
+
+DEPENDENCIES
+------------
+
+To run this test, you will need:
+
+  - lttng-tools (with python bindings)
+  - babeltrace
+  - python 3.0 or better
diff --git a/tests/regression/ust/daemon/daemon.c b/tests/regression/ust/daemon/daemon.c
new file mode 100644 (file)
index 0000000..477e1a6
--- /dev/null
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2009  Pierre-Marc Fournier
+ * Copyright (C) 2011-2012  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; version 2.1 of
+ * the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+#define TRACEPOINT_DEFINE
+#define TRACEPOINT_CREATE_PROBES
+#include "ust_tests_daemon.h"
+
+int main(int argc, char **argv, char *env[])
+{
+       int result;
+
+       if (argc < 1) {
+               fprintf(stderr, "usage: daemon\n");
+               exit(1);
+       }
+
+       pid_t parent_pid = getpid();
+       printf("parent_pid %d\n", parent_pid);
+       tracepoint(ust_tests_daemon, before_daemon, parent_pid);
+
+       result = daemon(0, 1);
+       if (result == 0) {
+               printf("child_pid %d\n", getpid());
+
+               tracepoint(ust_tests_daemon, after_daemon_child, getpid());
+       } else {
+               tracepoint(ust_tests_daemon, after_daemon_parent);
+               perror("daemon");
+               exit(1);
+       }
+
+       return 0;
+}
diff --git a/tests/regression/ust/daemon/test_daemon b/tests/regression/ust/daemon/test_daemon
new file mode 100755 (executable)
index 0000000..54afd0c
--- /dev/null
@@ -0,0 +1,35 @@
+#!/bin/sh
+#
+# Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# Check for a running sessiond
+`pidof lt-lttng-sessiond`
+STOP_SESSIOND=$?
+
+CURDIR=$(dirname $0)
+TESTDIR=${CURDIR}/../../..
+
+# Try to launch a sessiond before invoking the python test script
+if [ $STOP_SESSIOND -ne 0 ]; then
+       DIR=$(readlink -f ${TESTDIR})
+       ${DIR}/../src/bin/lttng-sessiond/lttng-sessiond --daemonize --quiet --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd"
+fi
+
+python3 ${CURDIR}/test_daemon.py
+
+if [ $STOP_SESSIOND -ne 0 ]; then
+    kill `pidof lt-lttng-sessiond`
+fi
diff --git a/tests/regression/ust/daemon/test_daemon.py b/tests/regression/ust/daemon/test_daemon.py
new file mode 100644 (file)
index 0000000..c9a9bff
--- /dev/null
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import uuid
+import os
+import subprocess
+import re
+import shutil
+import sys
+
+test_path = os.path.dirname(os.path.abspath(__file__)) + "/"
+test_utils_path = test_path
+for i in range(4):
+    test_utils_path = os.path.dirname(test_utils_path)
+test_utils_path = test_utils_path + "/utils"
+sys.path.append(test_utils_path)
+from test_utils import *
+
+
+NR_TESTS = 6
+current_test = 1
+print("1..{0}".format(NR_TESTS))
+
+# Check if a sessiond is running... bail out if none found.
+if session_daemon_alive() == 0:
+    bail("No sessiond running. Please make sure you are running this test with the \"run\" shell script and verify that the lttng tools are properly installed.")
+
+session_info = create_session()
+enable_ust_tracepoint_event(session_info, "*")
+start_session(session_info)
+
+daemon_process = subprocess.Popen(test_path + "daemon", stdout=subprocess.PIPE)
+if sys.version_info >= (3, 3):
+    try:
+        daemon_process_return_code = daemon_process.wait(5)
+    except TimeoutExpired:
+        daemon_process.kill()
+        daemon_process_return_code = -1
+else:
+    daemon_process_return_code = daemon_process.wait()
+
+daemon_process_output = daemon_process.communicate()[0]
+daemon_process_output = daemon_process_output.decode('utf-8').splitlines()
+
+print_test_result(daemon_process_return_code == 0, current_test, "Successful call to daemon() and normal exit")
+current_test += 1
+
+if daemon_process_return_code != 0:
+    bail("Could not trigger tracepoints successfully. Abondoning test.")
+
+stop_session(session_info)
+
+if len(daemon_process_output) != 2:
+    bail("Unexpected output received from daemon test executable." + str(daemon_process_output))
+
+parent_pid = re.search(r"\d+", daemon_process_output[0]).group(0)
+daemon_pid = re.search(r"\d+", daemon_process_output[1]).group(0)
+
+try:
+    babeltrace_process = subprocess.Popen(["babeltrace", session_info.trace_path], stdout=subprocess.PIPE)
+except FileNotFoundError:
+    bail("Could not open babeltrace. Please make sure it is installed.")
+
+before_daemon_event_found = False
+before_daemon_event_pid = -1
+after_daemon_event_found = False
+after_daemon_event_pid = -1
+
+for event_line in babeltrace_process.stdout:
+    event_line = event_line.decode('utf-8').replace("\n", "")
+
+    if re.search(r"before_daemon", event_line) is not None:
+        if before_daemon_event_found:
+            bail("Multiple instances of the before_daemon event found. Please make sure only one instance of this test is runnning.")
+        before_daemon_event_found = True
+        match = re.search(r"(?<=pid = )\d+", event_line)
+
+        if match is not None:
+            before_daemon_event_pid = match.group(0)
+
+    if re.search(r"after_daemon", event_line) is not None:
+        if after_daemon_event_found:
+            bail("Multiple instances of the after_daemon event found. Please make sure only one instance of this test is runnning.")
+        after_daemon_event_found = True
+        match = re.search(r"(?<=pid = )\d+", event_line)
+
+        if match is not None:
+            after_daemon_event_pid = match.group(0)
+babeltrace_process.wait()
+
+print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable")
+current_test += 1
+
+if babeltrace_process.returncode != 0:
+    bail("Unreadable trace; can't proceed with analysis.")
+
+print_test_result(before_daemon_event_found, current_test, "before_daemon event found in resulting trace")
+current_test += 1
+print_test_result(before_daemon_event_pid == parent_pid, current_test, "Parent pid reported in trace is correct")
+current_test += 1
+print_test_result(before_daemon_event_found, current_test, "after_daemon event found in resulting trace")
+current_test += 1
+print_test_result(after_daemon_event_pid == daemon_pid, current_test, "Daemon pid reported in trace is correct")
+current_test += 1
+
+shutil.rmtree(session_info.tmp_directory)
diff --git a/tests/regression/ust/daemon/ust_tests_daemon.h b/tests/regression/ust/daemon/ust_tests_daemon.h
new file mode 100644 (file)
index 0000000..0025a54
--- /dev/null
@@ -0,0 +1,57 @@
+#undef TRACEPOINT_PROVIDER
+#define TRACEPOINT_PROVIDER ust_tests_daemon
+
+#if !defined(_TRACEPOINT_UST_TESTS_DAEMON_H) || defined(TRACEPOINT_HEADER_MULTI_READ)
+#define _TRACEPOINT_UST_TESTS_DAEMON_H
+
+/*
+ * Copyright (C) 2012  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <lttng/tracepoint.h>
+#include <sys/types.h>
+
+TRACEPOINT_EVENT(ust_tests_daemon, before_daemon,
+       TP_ARGS(pid_t, pid),
+       TP_FIELDS(
+               ctf_integer(pid_t, pid, pid)
+       )
+)
+
+TRACEPOINT_EVENT(ust_tests_daemon, after_daemon_child,
+       TP_ARGS(pid_t, pid),
+       TP_FIELDS(
+               ctf_integer(pid_t, pid, pid)
+       )
+)
+
+TRACEPOINT_EVENT(ust_tests_daemon, after_daemon_parent,
+       TP_ARGS(),
+       TP_FIELDS()
+)
+
+#endif /* _TRACEPOINT_UST_TESTS_DAEMON_H */
+
+#undef TRACEPOINT_INCLUDE
+#define TRACEPOINT_INCLUDE "./ust_tests_daemon.h"
+
+/* This part must be outside ifdef protection */
+#include <lttng/tracepoint-event.h>
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