tests/regression/tools/snapshots/test_kernel_streaming

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2013 David Goulet <dgoulet@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 TEST_DESC="Streaming - Snapshot Kernel tracing"
  18
  19 CURDIR=$(dirname $0)/
  20 TESTDIR=$CURDIR/../../..
  21 EVENT_NAME="sched_switch"
  22 PID_RELAYD=0
  23 SESSION_NAME=""
  24 CHANNEL_NAME="chan1"
  25
  26 TRACE_PATH=$(mktemp -d)
  27
  28 NUM_TESTS=61
  29
  30 source $TESTDIR/utils/utils.sh
  31
  32 function snapshot_add_output ()
  33 {
  34         local sess_name=$1
  35         local trace_path=$2
  36         local name=$3
  37         local extra_opt=""
  38
  39         if [ ! -z $name ]; then
  40                 extra_opt="-n $name"
  41         fi
  42
  43         $TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot add-output -s $sess_name $extra_opt $trace_path >/dev/null 2>&1
  44         ok $? "Added snapshot output $trace_path"
  45 }
  46
  47 # Test a snapshot using a default name for the output destination.
  48 function test_kernel_default_name_with_del()
  49 {
  50         diag "Test kernel snapshot streaming with default name with delete output"
  51         create_lttng_session_no_output $SESSION_NAME
  52         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
  53         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
  54         start_lttng_tracing_ok $SESSION_NAME
  55         snapshot_add_output $SESSION_NAME "net://localhost"
  56         lttng_snapshot_record $SESSION_NAME
  57
  58         # Validate test
  59         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/snapshot-1*
  60         if [ $? -ne 0 ]; then
  61                 return $?
  62         fi
  63
  64         lttng_snapshot_del_output_ok $SESSION_NAME 1
  65         snapshot_add_output $SESSION_NAME "net://localhost"
  66         lttng_snapshot_record $SESSION_NAME
  67
  68         # Validate test with the next ID since a del output was done prior.
  69         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/snapshot-2*
  70         if [ $? -ne 0 ]; then
  71                 return $?
  72         fi
  73
  74         stop_lttng_tracing_ok $SESSION_NAME
  75         destroy_lttng_session_ok $SESSION_NAME
  76
  77         return 0
  78 }
  79
  80 # Test a snapshot using a default name for the output destination.
  81 function test_kernel_default_name()
  82 {
  83         diag "Test kernel snapshot streaming with default name"
  84         create_lttng_session_no_output $SESSION_NAME
  85         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
  86         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
  87         start_lttng_tracing_ok $SESSION_NAME
  88         snapshot_add_output $SESSION_NAME "net://localhost"
  89         lttng_snapshot_record $SESSION_NAME
  90         stop_lttng_tracing_ok $SESSION_NAME
  91         destroy_lttng_session_ok $SESSION_NAME
  92         # Validate test
  93         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/snapshot-1*
  94         out=$?
  95
  96         return $out
  97 }
  98
  99 # Test a snapshot using a custom name for the output destination.
 100 function test_kernel_custom_name()
 101 {
 102         local out
 103         local name="asnapshotname"
 104
 105         diag "Test kernel snapshot streaming with custom name"
 106         create_lttng_session_no_output $SESSION_NAME
 107         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
 108         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
 109         start_lttng_tracing_ok $SESSION_NAME
 110         snapshot_add_output $SESSION_NAME "net://localhost" $name
 111         lttng_snapshot_record $SESSION_NAME
 112         stop_lttng_tracing_ok $SESSION_NAME
 113         destroy_lttng_session_ok $SESSION_NAME
 114
 115         if ls $TRACE_PATH/$HOSTNAME/$name* &> /dev/null; then
 116                 ok 0 "Custom name snapshot exists"
 117                 # Validate test
 118                 validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$name-*
 119                 out=$?
 120         else
 121                 fail "No custom name snapshot found"
 122                 out=1
 123         fi
 124
 125         return $out
 126 }
 127
 128 function test_kernel_n_snapshot()
 129 {
 130         diag "Test kernel snapshot streaming multiple consecutive snapshot"
 131         create_lttng_session_no_output $SESSION_NAME
 132         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
 133         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
 134         snapshot_add_output $SESSION_NAME "net://localhost"
 135
 136         for i in {1..5};
 137         do
 138                 start_lttng_tracing_ok $SESSION_NAME
 139                 lttng_snapshot_record $SESSION_NAME
 140                 stop_lttng_tracing_ok $SESSION_NAME
 141                 validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/snapshot-1*
 142                 if [ $? -ne 0 ]; then
 143                         return 1
 144                 fi
 145                 set -u
 146                 rm -rf $TRACE_PATH/$HOSTNAME
 147                 set +u
 148         done
 149
 150         destroy_lttng_session_ok $SESSION_NAME
 151         return 0
 152 }
 153
 154 plan_tests $NUM_TESTS
 155
 156 print_test_banner "$TEST_DESC"
 157
 158 if [ "$(id -u)" == "0" ]; then
 159         isroot=1
 160 else
 161         isroot=0
 162 fi
 163
 164 skip $isroot "Root access is needed. Skipping all kernel streaming tests." $NUM_TESTS ||
 165 {
 166         validate_lttng_modules_present
 167
 168         start_lttng_relayd "-o $TRACE_PATH"
 169         start_lttng_sessiond
 170
 171         tests=( test_kernel_default_name
 172                 test_kernel_custom_name
 173                 test_kernel_default_name_with_del
 174                 test_kernel_n_snapshot
 175         )
 176
 177         for fct_test in ${tests[@]};
 178         do
 179                 SESSION_NAME=$(randstring 16 0)
 180                 ${fct_test}
 181                 if [ $? -eq 0 ]; then
 182                         # Only delete if successful
 183                         rm -rf $TRACE_PATH
 184                 else
 185                         break
 186                 fi
 187         done
 188
 189         stop_lttng_sessiond
 190         stop_lttng_relayd
 191 }