tests/regression/tools/regen-metadata/test_kernel

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2015 Julien Desfossez <jdesfossez@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 - Kernel tracing"
  18
  19 CURDIR=$(dirname $0)/
  20 TESTDIR=$CURDIR/../../..
  21 EVENT_NAME="lttng_test_filter_event"
  22 SESSION_NAME=""
  23
  24 TRACE_PATH=$(mktemp -d)
  25
  26 NUM_TESTS=24
  27
  28 source $TESTDIR/utils/utils.sh
  29
  30 function test_kernel_streaming ()
  31 {
  32         local metadata_path
  33
  34         diag "Test kernel streaming with metadata regeneration"
  35         create_lttng_session_uri $SESSION_NAME net://localhost
  36         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  37         start_lttng_tracing_ok $SESSION_NAME
  38         echo -n "100" > /proc/lttng-test-filter-event
  39
  40         # Baseline
  41         stop_lttng_tracing_ok $SESSION_NAME
  42         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*
  43
  44         # Find the metadata file
  45         metadata_path=$(find "$TRACE_PATH/$HOSTNAME/$SESSION_NAME"* | grep metadata)
  46
  47         # Empty the metadata file
  48         echo -n > "$metadata_path"
  49
  50         start_lttng_tracing_ok $SESSION_NAME
  51         regenerate_metadata_ok $SESSION_NAME
  52         stop_lttng_tracing_ok $SESSION_NAME
  53         # Validate test
  54         validate_trace $EVENT_NAME $TRACE_PATH/$HOSTNAME/$SESSION_NAME*
  55         destroy_lttng_session_ok $SESSION_NAME
  56         rm -rf "$TRACE_PATH"
  57 }
  58
  59 function test_kernel_local ()
  60 {
  61         local metadata_path
  62
  63         diag "Test kernel local with metadata regeneration"
  64         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  65         lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME
  66         start_lttng_tracing_ok $SESSION_NAME
  67
  68         # Baseline
  69         echo -n "100" > /proc/lttng-test-filter-event
  70         stop_lttng_tracing_ok $SESSION_NAME
  71         validate_trace $EVENT_NAME "$TRACE_PATH"
  72
  73         # Find the metadata file
  74         metadata_path=$(find "$TRACE_PATH"* | grep metadata)
  75
  76         # Empty the metadata file
  77         echo -n > "$metadata_path"
  78
  79         start_lttng_tracing_ok $SESSION_NAME
  80         regenerate_metadata_ok $SESSION_NAME
  81         stop_lttng_tracing_ok $SESSION_NAME
  82
  83         validate_trace $EVENT_NAME $TRACE_PATH
  84         destroy_lttng_session_ok $SESSION_NAME
  85
  86         rm -rf "$TRACE_PATH"
  87 }
  88
  89 plan_tests $NUM_TESTS
  90
  91 print_test_banner "$TEST_DESC"
  92
  93 if [ "$(id -u)" == "0" ]; then
  94         isroot=1
  95 else
  96         isroot=0
  97 fi
  98
  99 skip $isroot "Root access is needed. Skipping all kernel streaming tests." $NUM_TESTS ||
 100 {
 101         validate_lttng_modules_present
 102
 103         start_lttng_relayd "-o $TRACE_PATH"
 104         start_lttng_sessiond
 105         modprobe lttng-test
 106
 107         tests=( test_kernel_streaming test_kernel_local )
 108
 109         for fct_test in ${tests[@]};
 110         do
 111                 SESSION_NAME=$(randstring 16 0)
 112                 ${fct_test}
 113         done
 114
 115         modprobe --remove lttng-test
 116         stop_lttng_sessiond
 117         stop_lttng_relayd
 118 }