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102 lines
3.4 KiB
Perl
102 lines
3.4 KiB
Perl
# This program is copyright 2007-2011 Baron Schwartz, 2011 Percona Inc.
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# Feedback and improvements are welcome.
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#
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# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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# systems, you can issue `man perlgpl' or `man perlartistic' to read these
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# licenses.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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# Place, Suite 330, Boston, MA 02111-1307 USA.
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# ###########################################################################
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# VersionParser package
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# ###########################################################################
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{
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# Package: VersionParser
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# VersionParser parses a MySQL version string.
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package VersionParser;
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use strict;
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use warnings FATAL => 'all';
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use English qw(-no_match_vars);
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use constant MKDEBUG => $ENV{MKDEBUG} || 0;
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sub new {
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my ( $class ) = @_;
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bless {}, $class;
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}
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sub parse {
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my ( $self, $str ) = @_;
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my $result = sprintf('%03d%03d%03d', $str =~ m/(\d+)/g);
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MKDEBUG && _d($str, 'parses to', $result);
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return $result;
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}
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# Compares versions like 5.0.27 and 4.1.15-standard-log. Caches version number
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# for each DBH for later use.
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sub version_ge {
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my ( $self, $dbh, $target ) = @_;
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if ( !$self->{$dbh} ) {
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$self->{$dbh} = $self->parse(
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$dbh->selectrow_array('SELECT VERSION()'));
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}
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my $result = $self->{$dbh} ge $self->parse($target) ? 1 : 0;
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MKDEBUG && _d($self->{$dbh}, 'ge', $target, ':', $result);
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return $result;
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}
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# Returns DISABLED if InnoDB doesn't appear as YES or DEFAULT in SHOW ENGINES,
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# BUILTIN if there is no innodb_version variable in SHOW VARIABLES, or
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# <value> if there is an innodb_version variable in SHOW VARIABLES, or
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# NO if SHOW ENGINES is broken or InnDB doesn't appear in it.
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sub innodb_version {
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my ( $self, $dbh ) = @_;
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return unless $dbh;
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my $innodb_version = "NO";
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my ($innodb) =
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grep { $_->{engine} =~ m/InnoDB/i }
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map {
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my %hash;
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@hash{ map { lc $_ } keys %$_ } = values %$_;
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\%hash;
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}
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@{ $dbh->selectall_arrayref("SHOW ENGINES", {Slice=>{}}) };
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if ( $innodb ) {
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MKDEBUG && _d("InnoDB support:", $innodb->{support});
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if ( $innodb->{support} =~ m/YES|DEFAULT/i ) {
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my $vars = $dbh->selectrow_hashref(
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"SHOW VARIABLES LIKE 'innodb_version'");
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$innodb_version = !$vars ? "BUILTIN"
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: ($vars->{Value} || $vars->{value});
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}
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else {
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$innodb_version = $innodb->{support}; # probably DISABLED or NO
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}
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}
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MKDEBUG && _d("InnoDB version:", $innodb_version);
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return $innodb_version;
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}
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sub _d {
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my ($package, undef, $line) = caller 0;
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@_ = map { (my $temp = $_) =~ s/\n/\n# /g; $temp; }
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map { defined $_ ? $_ : 'undef' }
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@_;
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print STDERR "# $package:$line $PID ", join(' ', @_), "\n";
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}
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1;
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}
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# ###########################################################################
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# End VersionParser package
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# ###########################################################################
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