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Re: [LTP] [PATCH 04/05] Add Script which will be at the heart of this infrastructure
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From: Garrett C. <yan...@gm...> - 2009-08-12 08:42:28
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On Tue, Aug 11, 2009 at 10:30 AM, Subrata
Modak<su...@li...> wrote:
> At the heart of this infrastructure is this Script, which will actually:
> 1) Change the temporary command file generated by runltp,
> 2) Create a new temporary command file which will have the following entries
> against each one entry in the command file:
> i) Same TAG COMMAND_LINE entry,
> ii) Entry to call the script to insert faults,
> iii) Entry to run as many loops as specified by the user,
> iv) Entry to call the script to restore kernel to default state,
>
> It is capable of creating new entries in the temporary command file with the
> following tags and command lines:
> TAG_NAME=tag1, COMMANDLINE="test1",
> TAG_NAME=tag1_loop1, COMMANDLINE="insert_fault_in_kernel; test1",
> TAG_NAME=tag1_loop2, COMMANDLINE="test1",
> ...
> TAG_NAME=tag1_loopn, COMMANDLINE="test1; restore_default_kernel",
>
> Signed-off-by: Subrata Modak <su...@li...>
> ---
>
> diff -uprN ltp-full-20090731.orig/tools/create_kernel_faults_in_loops_and_probability.pl ltp-full-20090731/tools/create_kernel_faults_in_loops_and_probability.pl
> --- ltp-full-20090731.orig/tools/create_kernel_faults_in_loops_and_probability.pl 1970-01-01 05:30:00.000000000 +0530
> +++ ltp-full-20090731/tools/create_kernel_faults_in_loops_and_probability.pl 2009-08-11 20:23:54.000000000 +0530
> @@ -0,0 +1,97 @@
> +#!/usr/bin/perl
> +################################################################################
> +## ##
> +## Copyright (c) International Business Machines Corp., 2009 ##
> +## ##
> +## This program is free software; you can redistribute it and/or modify ##
> +## it under the terms of the GNU General Public License as published by ##
> +## the Free Software Foundation; either version 2 of the License, or ##
> +## (at your option) any later version. ##
> +## ##
> +## This program is distributed in the hope that it will be useful, but ##
> +## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
> +## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ##
> +## for more details. ##
> +## ##
> +## You should have received a copy of the GNU General Public License ##
> +## along with this program; if not, write to the Free Software ##
> +## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ##
> +## ##
> +################################################################################
> +# ##
> +# File : create_kernel_faults_in_loops_and_probability.pl ##
> +# ##
> +# Usage: create_kernel_faults_in_loops_and_probability.pl\ ##
> +# <LTP_COMMAND_FILE> <NO_OF_LOOPS_EACH_TEST_WILL_RUN>\ ##
> +# <PROBABILITY_OF_FAULT_INJECTION> ##
> +# ##
> +# Description: This is a simple perl script which will take ltp command file ##
> +# as input and then create a final command file while will have ##
> +# the following entries for each test tag: ##
> +# 1) <tag_name_loop1> <test_binary_name> ##
> +# 2) <tag_name_loop2> <insert_kernel_faults.sh test_binary_name>##
> +# 3) tag entried from loop3 to loop(n-1) ##
> +# 4) <tag_name_loopn> <restore_kernel_faults_default.sh test_binary_name>##
> +# ##
> +# Author: Subrata Modak <su...@li...> ##
> +# ##
> +# History: Aug 11 2009 - Created - Subrata Modak. ##
> +################################################################################
> +
> +my $command_file = shift (@ARGV) || syntax();
> +my $loops = shift (@ARGV) || syntax();
> +my $failure_probability = shift (@ARGV) || syntax();
> +
> +sub syntax() {
> + print "syntax: create_fault_in_loops_and_probability.pl\
> + <LTP_COMMAND_FILE> <NO_OF_LOOPS_EACH_TEST_WILL_RUN>\
> + <PROBABILITY_OF_FAULT_INJECTION>\n";
> + exit (1);
> +}
> +#$ENV{TEST_START_TIME})
> +
> +
> +open (FILE, $command_file) || die "Cannot open file: $command_file\n";
> +while ($line = <FILE>) {
> + if ($line =~ /^#/) {
> + print "$line";
> + next;
> + }
> + if ($line =~ /^\n$/) {
> + next;
> + }
> + chomp $line;
> + print "$line\n"; #Print one instance for stable execution
> + @tag_and_actual_command = split(/\ /, $line);
> +
> + #The remaining loops should be running under fault injection
> + for ($counter=1; $counter<=$loops; $counter++) {
> + my $token_counter = 0;
> + foreach my $token (@tag_and_actual_command) {
> + if ($token_counter == 0 ) {
> + #Time to append the actual command tag with the loop no.
> + print $token . "_loop_" . $counter . " ";
> + $token_counter++;
> + next;
> + }
> + if ($token_counter == 1 && $counter == 1) {
> + #Time to include the fault injection script in the first loop
> + print "\$LTPROOT/tools/insert_kernel_faults.sh " . $failure_probability . "; " . $token;
> + $token_counter++;
> + next;
> + }
> + print " " . $token . " ";
> + }
> + if ($counter == $loops) {
> + #Time to withdraw the faults once the last loop has been executed
> + #Until all faults has been successfully restored to default values...
> + #Keep restoring them
> + print "; " . "\$LTPROOT/tools/restore_kernel_faults_default.sh; RC=\$?; while [ \$RC -ne 0 ]; do \$LTPROOT/tools/restore_kernel_faults_default.sh; RC=\$?; done\n"
> + } else {
> + print "\n"
> + }
> + }
> +
> +}
> +close (FILE);
> +
Hi Subrata,
1. Why is this written in perl? bourne shell should be the maximum
requirement for any and all infrastructure scripts.
2. Why not write this in a runtest-ish file format, e.g.
[tag] [command]
? That way you can feed the command through pan at least...
Thanks
-Garrett
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