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Viewing changes to tests/kewpie/randgen/lib/GenTest/Validator/ResultsetComparatorSimplify.pm

  • Committer: Package Import Robot
  • Author(s): Tobias Frost
  • Date: 2013-08-22 20:18:31 UTC
  • mto: (20.1.1 sid)
  • mto: This revision was merged to the branch mainline in revision 21.
  • Revision ID: package-import@ubuntu.com-20130822201831-gn3ozsh7o7wmc5tk
Tags: upstream-7.2.3
Import upstream version 7.2.3

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tests/kewpie/randgen/lib/GenTest/Validator/ResultsetComparatorSimplify.pm
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# Copyright (c) 2008, 2011 Oracle and/or its affiliates. All rights reserved.
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# Use is subject to license terms.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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# USA
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package GenTest::Validator::ResultsetComparatorSimplify;
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require Exporter;
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@ISA = qw(GenTest GenTest::Validator);
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use strict;
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use GenTest;
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use GenTest::Constants;
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use GenTest::Comparator;
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use GenTest::Result;
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use GenTest::Validator;
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use GenTest::Executor::MySQL;
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use GenTest::Simplifier::SQL;
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use GenTest::Simplifier::Test;
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use DBI;
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use DBIx::MyParsePP;
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use DBIx::MyParsePP::Rule;
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my $empty_child = DBIx::MyParsePP::Rule->new();
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my $myparse = DBIx::MyParsePP->new();
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my $query_obj;
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sub validate {
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        my ($comparator, $executors, $results) = @_;
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        return STATUS_WONT_HANDLE if $#$results != 1;
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        return STATUS_WONT_HANDLE if $results->[0]->query() =~ m{EXPLAIN}sio;
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        if ( $results->[0]->err() != $results->[1]->err() ) {
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                say("Query: ".$results->[0]->query()."; failed: error code mismatch between servers ('".$results->[0]->errstr()."' vs. '".$results->[1]->errstr()."')");
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                return STATUS_ERROR_MISMATCH;
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        }
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        return STATUS_WONT_HANDLE if $results->[0]->status() != STATUS_OK;
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        return STATUS_WONT_HANDLE if $results->[1]->status() != STATUS_OK;
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        return STATUS_WONT_HANDLE if defined $results->[0]->warnings();
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        return STATUS_WONT_HANDLE if defined $results->[1]->warnings();
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60
 
        my $query = $results->[0]->query();
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        my $compare_outcome = GenTest::Comparator::compare($results->[0], $results->[1]);
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        if ( ($compare_outcome == STATUS_LENGTH_MISMATCH) ||
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             ($compare_outcome == STATUS_CONTENT_MISMATCH) 
65
 
        ) {
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                say("---------- RESULT COMPARISON ISSUE START ----------");
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        }
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        if ($compare_outcome == STATUS_LENGTH_MISMATCH) {
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                if ($query =~ m{^\s*select}io) {
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                        say("Query: $query; failed: result length mismatch between servers (".$results->[0]->rows()." vs. ".$results->[1]->rows().")");
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                        say(GenTest::Comparator::dumpDiff($results->[0], $results->[1]));
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                } else {
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                        say("Query: $query; failed: affected_rows mismatch between servers (".$results->[0]->affectedRows()." vs. ".$results->[1]->affectedRows().")");
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                }
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        } elsif ($compare_outcome == STATUS_CONTENT_MISMATCH) {
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                say("Query: $query; failed: result content mismatch between servers.");
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                say(GenTest::Comparator::dumpDiff($results->[0], $results->[1]));
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        }
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        if (
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                ($query =~ m{^\s*select}sio) && (
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                        ($compare_outcome == STATUS_LENGTH_MISMATCH) ||
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                        ($compare_outcome == STATUS_CONTENT_MISMATCH)
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                )
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        ) {
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                my $simplifier_sql = GenTest::Simplifier::SQL->new(
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                        oracle => sub {
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                                my $oracle_query = shift;
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                                my @oracle_results;
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                                foreach my $executor (@$executors) {
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                                        my $oracle_result = $executor->execute($oracle_query, 1);
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                                        return ORACLE_ISSUE_STATUS_UNKNOWN if $oracle_result->status() != STATUS_OK;
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                                        return ORACLE_ISSUE_STATUS_UNKNOWN if defined $oracle_result->warnings();
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                                        push @oracle_results, $oracle_result;
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                                }
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101
 
                                my $oracle_compare = GenTest::Comparator::compare($oracle_results[0], $oracle_results[1]);
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                                #
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                                # If both result sets are empty, we can not decide if the issue continues to be repeatable
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                                # or not. So, to be safe, we return "unknown", otherwise we risk messing up the differential
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                                # coverage reports
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                                #
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                                if (($oracle_results[0]->rows() == 0) && ($oracle_results[1]->rows() == 0)) {
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                                        return ORACLE_ISSUE_STATUS_UNKNOWN;
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                                } elsif (
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                                        ($oracle_compare == STATUS_LENGTH_MISMATCH) ||
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                                        ($oracle_compare == STATUS_CONTENT_MISMATCH)
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                                ) {
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                                        return ORACLE_ISSUE_STILL_REPEATABLE;
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                                } else {
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                                        return ORACLE_ISSUE_NO_LONGER_REPEATABLE;
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                                }
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                        }
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                );
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122
 
                my $simplified_query = $simplifier_sql->simplify($query);
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                if (defined $simplified_query) {
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                        say("Simplified query: $simplified_query;");
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                        my @explains = (
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                                $executors->[0]->execute("EXPLAIN ".$simplified_query),
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                                $executors->[1]->execute("EXPLAIN ".$simplified_query)
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                        );
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                        say("EXPLAIN diff:");
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                        say(GenTest::Comparator::dumpDiff(@explains));
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                        my $simplified_results = [];
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                        $simplified_results->[0] = $executors->[0]->execute($simplified_query, 1);
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                        $simplified_results->[1] = $executors->[1]->execute($simplified_query, 1);
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                        say("Result set diff:");
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                        say(GenTest::Comparator::dumpDiff($simplified_results->[0], $simplified_results->[1]));
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                        my $simplifier_test = GenTest::Simplifier::Test->new(
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                                executors       => $executors,
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                                results         => [ $simplified_results , $results ]
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                        );
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                        # show_index is enabled for result difference queries its good to see the index details,
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                        # the value 1 is used to define if show_index is enabled, to disable dont assign a value.
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                        my $show_index = 1;
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                        my $simplified_test = $simplifier_test->simplify($show_index);
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                        my $tmpfile = tmpdir().$$.time().".test";
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                        say("Dumping .test to $tmpfile");
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                        open (TESTFILE, '>'.$tmpfile);
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                        print TESTFILE $simplified_test;
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                        close TESTFILE;
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                } else {
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                        say("Could not simplify failure, appears to be sporadic.");
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                }
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        }
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        if ( ($compare_outcome == STATUS_LENGTH_MISMATCH) ||
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             ($compare_outcome == STATUS_CONTENT_MISMATCH) 
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        ) {
162
 
                say("---------- RESULT COMPARISON ISSUE END ------------");
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        }
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        #
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        # If the discrepancy is found on SELECT, we reduce the severity of the error so that the test can continue
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        # hopefully finding further errors in the same run or providing an indication as to how frequent the error is
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        #
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        # If the discrepancy is on an UPDATE, then the servers have diverged and the test can not continue safely.
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        # 
171
 
 
172
 
        if ($query =~ m{^[\s/*!0-9]*(EXPLAIN|SELECT|ALTER|LOAD\s+INDEX|CACHE\s+INDEX)}io) {
173
 
                return $compare_outcome - STATUS_SELECT_REDUCTION;
174
 
        } else {
175
 
                return $compare_outcome;
176
 
        }
177
 
}
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1;