tests/regression/tools/snapshots/test_kernel_streaming

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
   4 #
   5 # SPDX-License-Identifier: LGPL-2.1-only
   6
   7 TEST_DESC="Streaming - Snapshot Kernel tracing"
   8
   9 CURDIR=$(dirname $0)/
  10 TESTDIR=$CURDIR/../../..
  11 EVENT_NAME="sched_switch"
  12 SESSION_NAME=""
  13 CHANNEL_NAME="chan1"
  14
  15 TRACE_PATH=$(mktemp -d)
  16
  17 NUM_TESTS=61
  18
  19 source $TESTDIR/utils/utils.sh
  20
  21 function snapshot_add_output ()
  22 {
  23         local sess_name=$1
  24         local trace_path=$2
  25         local name=$3
  26         local extra_opt=""
  27
  28         if [ ! -z $name ]; then
  29                 extra_opt="-n $name"
  30         fi
  31
  32         $TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot add-output -s $sess_name $extra_opt $trace_path >/dev/null 2>&1
  33         ok $? "Added snapshot output $trace_path"
  34 }
  35
  36 # Test a snapshot using a default name for the output destination.
  37 function test_kernel_default_name_with_del()
  38 {
  39         diag "Test kernel snapshot streaming with default name with delete output"
  40         create_lttng_session_no_output $SESSION_NAME
  41         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
  42         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
  43         start_lttng_tracing_ok $SESSION_NAME
  44         snapshot_add_output $SESSION_NAME "net://localhost"
  45         lttng_snapshot_record $SESSION_NAME
  46
  47         # Validate test
  48         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*/snapshot-1*
  49         if [ $? -ne 0 ]; then
  50                 return $?
  51         fi
  52
  53         lttng_snapshot_del_output_ok $SESSION_NAME 1
  54         snapshot_add_output $SESSION_NAME "net://localhost"
  55         lttng_snapshot_record $SESSION_NAME
  56
  57         # Validate test with the next ID since a del output was done prior.
  58         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*/snapshot-2*
  59         if [ $? -ne 0 ]; then
  60                 return $?
  61         fi
  62
  63         stop_lttng_tracing_ok $SESSION_NAME
  64         destroy_lttng_session_ok $SESSION_NAME
  65
  66         return 0
  67 }
  68
  69 # Test a snapshot using a default name for the output destination.
  70 function test_kernel_default_name()
  71 {
  72         diag "Test kernel snapshot streaming with default name"
  73         create_lttng_session_no_output $SESSION_NAME
  74         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
  75         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
  76         start_lttng_tracing_ok $SESSION_NAME
  77         snapshot_add_output $SESSION_NAME "net://localhost"
  78         lttng_snapshot_record $SESSION_NAME
  79         stop_lttng_tracing_ok $SESSION_NAME
  80         destroy_lttng_session_ok $SESSION_NAME
  81         # Validate test
  82         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*/snapshot-1*
  83         out=$?
  84
  85         return $out
  86 }
  87
  88 # Test a snapshot using a custom name for the output destination.
  89 function test_kernel_custom_name()
  90 {
  91         local out
  92         local name="asnapshotname"
  93
  94         diag "Test kernel snapshot streaming with custom name"
  95         create_lttng_session_no_output $SESSION_NAME
  96         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
  97         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
  98         start_lttng_tracing_ok $SESSION_NAME
  99         snapshot_add_output $SESSION_NAME "net://localhost" $name
 100         lttng_snapshot_record $SESSION_NAME
 101         stop_lttng_tracing_ok $SESSION_NAME
 102         destroy_lttng_session_ok $SESSION_NAME
 103
 104         if ls $TRACE_PATH/$HOSTNAME/$SESSION_NAME*/$name* &> /dev/null; then
 105                 ok 0 "Custom name snapshot exists"
 106                 # Validate test
 107                 validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*/$name-*
 108                 out=$?
 109         else
 110                 fail "No custom name snapshot found"
 111                 out=1
 112         fi
 113
 114         return $out
 115 }
 116
 117 function test_kernel_n_snapshot()
 118 {
 119         diag "Test kernel snapshot streaming multiple consecutive snapshot"
 120         create_lttng_session_no_output $SESSION_NAME
 121         enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
 122         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
 123         snapshot_add_output $SESSION_NAME "net://localhost"
 124
 125         for i in {1..5};
 126         do
 127                 start_lttng_tracing_ok $SESSION_NAME
 128                 lttng_snapshot_record $SESSION_NAME
 129                 stop_lttng_tracing_ok $SESSION_NAME
 130                 validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*/snapshot-1*
 131                 if [ $? -ne 0 ]; then
 132                         return 1
 133                 fi
 134                 set -u
 135                 rm -rf $TRACE_PATH/$HOSTNAME
 136                 set +u
 137         done
 138
 139         destroy_lttng_session_ok $SESSION_NAME
 140         return 0
 141 }
 142
 143 plan_tests $NUM_TESTS
 144
 145 print_test_banner "$TEST_DESC"
 146
 147 if [ "$(id -u)" == "0" ]; then
 148         isroot=1
 149 else
 150         isroot=0
 151 fi
 152
 153 skip $isroot "Root access is needed. Skipping all kernel streaming tests" $NUM_TESTS ||
 154 {
 155         validate_lttng_modules_present
 156
 157         start_lttng_relayd "-o $TRACE_PATH"
 158         start_lttng_sessiond
 159
 160         tests=( test_kernel_default_name
 161                 test_kernel_custom_name
 162                 test_kernel_default_name_with_del
 163                 test_kernel_n_snapshot
 164         )
 165
 166         for fct_test in ${tests[@]};
 167         do
 168                 SESSION_NAME=$(randstring 16 0)
 169                 ${fct_test}
 170                 if [ $? -eq 0 ]; then
 171                         # Only delete if successful
 172                         rm -rf $TRACE_PATH
 173                 else
 174                         break
 175                 fi
 176         done
 177
 178         stop_lttng_sessiond
 179         stop_lttng_relayd
 180 }