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