tests/regression/tools/clear/test_kernel

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2019 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
   4 #
   5 # This library is free software; you can redistribute it and/or modify it under
   6 # the terms of the GNU Lesser General Public License as published by the Free
   7 # Software Foundation; version 2.1 of the License.
   8 #
   9 # This library is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  11 # FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  12 # details.
  13 #
  14 # You should have received a copy of the GNU Lesser General Public License
  15 # along with this library; if not, write to the Free Software Foundation, Inc.,
  16 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  17
  18 TEST_DESC="Clear - Kernel tracing"
  19
  20 CURDIR=$(dirname $0)/
  21 TESTDIR=$CURDIR/../../..
  22 EVENT_NAME="lttng_test_filter_event"
  23
  24 TRACE_PATH=$(mktemp -d)
  25
  26 NUM_TESTS=55
  27
  28 source $TESTDIR/utils/utils.sh
  29
  30 function clean_path ()
  31 {
  32         local trace_path=$1
  33         set -u
  34         rm -rf $trace_path/*
  35         set +u
  36 }
  37
  38 function test_kernel_streaming ()
  39 {
  40         diag "Test kernel streaming clear"
  41         create_lttng_session_uri $SESSION_NAME net://localhost
  42         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  43         start_lttng_tracing_ok $SESSION_NAME
  44         # TODO: place holder, support for streaming MUST be implemented
  45         # This validate that for now we fail correctly
  46         lttng_clear_session_fail $SESSION_NAME
  47
  48         destroy_lttng_session_ok $SESSION_NAME
  49 }
  50
  51 function test_kernel_streaming_live ()
  52 {
  53         diag "Test kernel streaming live clear"
  54         create_lttng_session_uri $SESSION_NAME net://localhost "--live"
  55         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  56         start_lttng_tracing_ok $SESSION_NAME
  57         # TODO: place holder, support for streaming MUST be implemented
  58         # This validate that for now we fail correctly
  59         lttng_clear_session_fail $SESSION_NAME
  60
  61         destroy_lttng_session_ok $SESSION_NAME
  62 }
  63
  64 function test_kernel_local ()
  65 {
  66         diag "Test kernel local"
  67         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  68         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  69         start_lttng_tracing_ok $SESSION_NAME
  70         # TODO: place holder, support for local MUST be implemented
  71         lttng_clear_session_fail $SESSION_NAME
  72         # TODO: validate that the previous chunk IS no more present
  73
  74         destroy_lttng_session_ok $SESSION_NAME
  75 }
  76
  77 function do_kernel_snapshot ()
  78 {
  79         local session_name=$1
  80         local trace_path=$2
  81
  82         lttng_enable_kernel_event $session_name $EVENT_NAME
  83         start_lttng_tracing_ok $session_name
  84
  85         # Generate 10 events that will sit in the buffers.
  86         echo -n "10" > /proc/lttng-test-filter-event
  87
  88         # Take a first snapshot and validate that the events are present.
  89         lttng_snapshot_record $session_name
  90         stop_lttng_tracing_ok $session_name
  91         validate_trace_count $EVENT_NAME $trace_path 10
  92
  93         # Clean the output path
  94         clean_path $trace_path
  95         start_lttng_tracing_ok $session_name
  96
  97         lttng_clear_session_ok $session_name
  98
  99         # Make sure the subsequent snapshot is empty and valid.
 100         lttng_snapshot_record $session_name
 101         stop_lttng_tracing_ok $session_name
 102         validate_trace_empty $trace_path
 103
 104         # Clean the output path
 105         clean_path $trace_path
 106         start_lttng_tracing_ok $session_name
 107
 108         # Make sure that everything still works, generate events and take a
 109         # snapshot.
 110         echo -n "10" > /proc/lttng-test-filter-event
 111         lttng_snapshot_record $session_name
 112         stop_lttng_tracing_ok $session_name
 113         validate_trace_count $EVENT_NAME $trace_path 10
 114 }
 115
 116 function test_kernel_streaming_snapshot ()
 117 {
 118         diag "Test kernel streaming snapshot clear"
 119
 120         create_lttng_session_uri $SESSION_NAME net://localhost "--snapshot"
 121         do_kernel_snapshot $SESSION_NAME $TRACE_PATH
 122         destroy_lttng_session_ok $SESSION_NAME
 123 }
 124
 125 function test_kernel_local_snapshot ()
 126 {
 127         diag "Test kernel local snapshot clear"
 128
 129         create_lttng_session_ok $SESSION_NAME $TRACE_PATH "--snapshot"
 130         do_kernel_snapshot $SESSION_NAME $TRACE_PATH
 131         destroy_lttng_session_ok $SESSION_NAME
 132 }
 133
 134 plan_tests $NUM_TESTS
 135
 136 print_test_banner "$TEST_DESC"
 137
 138 if [ "$(id -u)" == "0" ]; then
 139         isroot=1
 140 else
 141         isroot=0
 142 fi
 143
 144 tests=( test_kernel_streaming
 145         test_kernel_streaming_live
 146         test_kernel_local
 147         test_kernel_streaming_snapshot
 148         test_kernel_local_snapshot
 149 )
 150
 151 skip $isroot "Root access is needed. Skipping all kernel streaming tests." $NUM_TESTS ||
 152 {
 153         validate_lttng_modules_present
 154
 155         start_lttng_relayd "-o $TRACE_PATH"
 156         start_lttng_sessiond
 157         modprobe lttng-test
 158
 159         for fct_test in ${tests[@]};
 160         do
 161                 SESSION_NAME=$(randstring 16 0)
 162                 ${fct_test}
 163                 clean_path $TRACE_PATH
 164         done
 165
 166         rmmod lttng-test
 167         stop_lttng_sessiond
 168         stop_lttng_relayd
 169 }
 170
 171 clean_path $TRACE_PATH