tests/regression/tools/health/test_thread_stall

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2012 Christian Babeux <christian.babeux@efficios.com>
   4 #
   5 # This program is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License, version 2 only, as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 # more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along with
  15 # this program; if not, write to the Free Software Foundation, Inc., 51
  16 # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 TEST_DESC="Health check - Thread stall"
  19
  20 CURDIR=$(dirname $0)/
  21 TESTDIR=$CURDIR/../../..
  22 LTTNG_BIN="lttng"
  23 SESSION_NAME="health_thread_stall"
  24 EVENT_NAME="bogus"
  25 HEALTH_CHECK_BIN="health_check"
  26 SESSIOND_PRELOAD=".libs/libhealthstall.so"
  27 NUM_TESTS=12
  28
  29 source $TESTDIR/utils/utils.sh
  30
  31 if [ ! -f "$CURDIR/$SESSIOND_PRELOAD" ]; then
  32         BAIL_OUT "libhealthstall.so not available for this test."
  33 fi
  34
  35 function test_thread_stall
  36 {
  37         test_thread_stall_name="$1"
  38         test_thread_exit_code="$2"
  39
  40         diag "Test health failure with ${test_thread_stall_name}"
  41
  42         # Activate testpoints
  43         export LTTNG_TESTPOINT_ENABLE=1
  44
  45         # Activate specific thread exit
  46         export ${test_thread_stall_name}_STALL=1
  47
  48         # Spawn sessiond with preload healthexit lib
  49         export LD_PRELOAD="$CURDIR/$SESSIOND_PRELOAD"
  50         # Set the socket timeout to 5 so the health check delta is set to 25.
  51         export LTTNG_NETWORK_SOCKET_TIMEOUT=5
  52         start_lttng_sessiond
  53
  54         # Cleanup some env. var.
  55         unset LD_PRELOAD
  56         unset ${test_thread_stall_name}_STALL
  57
  58         # Check initial health status
  59         $CURDIR/$HEALTH_CHECK_BIN > /dev/null
  60
  61         # Wait
  62         sleep 30
  63
  64         # Check health status, should indicate failure
  65         $CURDIR/$HEALTH_CHECK_BIN > ${STDOUT_PATH} 2> ${STDERR_PATH}
  66
  67         out=$(grep "${test_thread_error_string}" ${STDOUT_PATH} | wc -l)
  68         if [ $out -eq 0 ]; then
  69                 fail "Validate thread ${test_thread_stall_name} is stalled"
  70                 diag "Health returned:"
  71                 diag "stdout:"
  72                 file=${STDOUT_PATH}
  73                 while read line ; do
  74                     diag "$line"
  75                 done < ${file}
  76
  77                 diag "stderr:"
  78                 file=${STDERR_PATH}
  79                 while read line ; do
  80                     diag "$line"
  81                 done < ${file}
  82
  83                 stop_lttng_sessiond
  84                 return 1
  85         else
  86                 pass "Validate thread ${test_thread_stall_name} is stalled"
  87         fi
  88
  89         # Wait
  90         sleep 40
  91
  92         # Check health status, should now pass
  93         $CURDIR/$HEALTH_CHECK_BIN > ${STDOUT_PATH} 2> ${STDERR_PATH}
  94
  95         out=$(grep "${test_thread_error_string}" ${STDOUT_PATH} | wc -l)
  96         if [ $out -ne 0 ]; then
  97                 fail "Validate thread ${test_thread_stall_name} is not longer stalled"
  98                 diag "Health returned:"
  99                 diag "stdout:"
 100                 file=${STDOUT_PATH}
 101                 while read line ; do
 102                     diag "$line"
 103                 done < ${file}
 104
 105                 diag "stderr:"
 106                 file=${STDERR_PATH}
 107                 while read line ; do
 108                     diag "$line"
 109                 done < ${file}
 110
 111                 stop_lttng_sessiond
 112                 return 1
 113         else
 114                 pass "Validate thread ${test_thread_stall_name} is not longer stalled"
 115                 stop_lttng_sessiond
 116         fi
 117 }
 118
 119 plan_tests $NUM_TESTS
 120
 121 print_test_banner "$TEST_DESC"
 122
 123 THREAD=("LTTNG_THREAD_MANAGE_CLIENTS"
 124         "LTTNG_THREAD_MANAGE_APPS"
 125 # This thread is a little bit tricky to stall,
 126 # need to send some commands and setup an app.
 127 #       "LTTNG_THREAD_REG_APPS"
 128 )
 129
 130 ERROR_STRING=(
 131         "Thread \"Session daemon command\" is not responding in component \"sessiond\"."
 132         "Thread \"Session daemon application manager\" is not responding in component \"sessiond\"."
 133         "Thread \"Session daemon application registration\" is not responding in component \"sessiond\"."
 134 )
 135
 136 STDOUT_PATH=$(mktemp)
 137 STDERR_PATH=$(mktemp)
 138
 139 THREAD_COUNT=${#THREAD[@]}
 140 i=0
 141 while [ "$i" -lt "$THREAD_COUNT" ]; do
 142         test_thread_stall "${THREAD[$i]}" "${ERROR_STRING[$i]}"
 143
 144         if [ $? -eq 1 ]; then
 145                 exit 1
 146         fi
 147
 148         let "i++"
 149 done
 150
 151 # The manage kernel thread is only spawned if we are root
 152 if [ "$(id -u)" == "0" ]; then
 153         isroot=1
 154 else
 155         isroot=0
 156 fi
 157
 158 skip $isroot "Root access is needed. Skipping LTTNG_THREAD_MANAGE_KERNEL tests." "4" ||
 159 {
 160         test_thread_stall "LTTNG_THREAD_MANAGE_KERNEL" "Thread \"Session daemon kernel\" is not responding in component \"sessiond\"."
 161 }
 162
 163 rm -f ${STDOUT_PATH}
 164 rm -f ${STDERR_PATH}