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#!/bin/sh
###########################################################################
# NOTE: this script returns 0 (success) even in case of failure (except for
# usage-error). This is because this script is executed under
# mysql-test-run[.pl] and it's better to examine particular problem in log
# file, than just having said that the test case has failed.
###########################################################################
basename=`basename "$0"`
dirname=`dirname "$0"`
###########################################################################
. "$dirname/utils.sh"
###########################################################################
check_restart()
{
if [ ! -r "$pid_path" ]; then
log_debug "No '$pid_path' found."
user_msg='the process was killed'
return 1
fi
new_pid=`cat "$pid_path" 2>/dev/null`
err_code=$?
log_debug "err_code: $err_code; original_pid: $original_pid; new_pid: $new_pid."
if [ $err_code -eq 0 -a "$original_pid" = "$new_pid" ]; then
log_debug "The process was not restarted."
user_msg='the process was not restarted'
return 1
fi
log_debug "The process was restarted."
user_msg='the process was restarted'
return 0
}
###########################################################################
if [ $# -ne 4 ]; then
echo "Usage: $basename <pid file path> killed|restarted <timeout> <test id>"
exit 1
fi
pid_path="$1"
expected_result="$2"
total_timeout="$3"
test_id="$4"
log_file="$MYSQLTEST_VARDIR/log/$test_id.log"
log_debug "-- $basename: starting --"
log_debug "pid_path: '$pid_path'"
log_debug "expected_result: '$expected_result'"
log_debug "total_timeout: '$total_timeout'"
log_debug "test_id: '$test_id'"
log_debug "log_file: '$log_file'"
###########################################################################
if [ "$expected_result" != 'killed' -a \
"$expected_result" != 'restarted' ]; then
log_error "Invalid second argument ($expected_result): 'killed' or 'restarted' expected."
quit 0
fi
if [ -z "$pid_path" ]; then
log_error "Invalid PID path ($pid_path)."
quit 0
fi
if [ ! -r "$pid_path" ]; then
log_error "PID file ($pid_path) does not exist."
quit 0
fi
if [ -z "$total_timeout" ]; then
log_error "Timeout is not specified."
quit 0
fi
###########################################################################
original_pid=`cat "$pid_path"`
log_debug "original_pid: $original_pid."
log_info "Killing the process..."
kill -9 $original_pid
###########################################################################
log_info "Waiting..."
if [ "$expected_result" = "restarted" ]; then
# Wait for the process to restart.
cur_attempt=1
while true; do
log_debug "cur_attempt: $cur_attempt."
if check_restart; then
log_info "Success: $user_msg."
quit 0
fi
[ $cur_attempt -ge $total_timeout ] && break
log_debug "Sleeping for 1 second..."
sleep 1
cur_attempt=`expr $cur_attempt + 1`
done
log_error "$user_msg."
quit 0
else # $expected_result == killed
# Here we have to sleep for some long time to ensure that the process will
# not be restarted.
log_debug "Sleeping for $total_timeout seconds..."
sleep $total_timeout
new_pid=`cat "$pid_path" 2>/dev/null`
log_debug "new_pid: $new_pid."
if [ "$new_pid" -a "$new_pid" -ne "$original_pid" ]; then
log_error "The process was restarted."
else
log_info "Success: the process was killed."
fi
quit 0
fi
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