Files
percona-toolkit/lib/VersionCheck.pm
2012-08-08 14:08:26 -06:00

240 lines
6.8 KiB
Perl

# This program is copyright 2012 Percona Inc.
# Feedback and improvements are welcome.
#
# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# 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, version 2; OR the Perl Artistic License. On UNIX and similar
# systems, you can issue `man perlgpl' or `man perlartistic' to read these
# licenses.
#
# 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.
# ###########################################################################
# VersionCheck package
# ###########################################################################
{
# Package: VersionCheck
# VersionCheck checks program versions with Percona.
package VersionCheck;
use strict;
use warnings FATAL => 'all';
use English qw(-no_match_vars);
use constant PTDEBUG => $ENV{PTDEBUG} || 0;
use Data::Dumper;
$Data::Dumper::Indent = 1;
$Data::Dumper::Sortkeys = 1;
$Data::Dumper::Quotekeys = 0;
sub new {
my ($class, %args) = @_;
return bless {}, $class;
}
sub parse_server_response {
my ($self, %args) = @_;
my @required_args = qw(response);
foreach my $arg ( @required_args ) {
die "I need a $arg arugment" unless $args{$arg};
}
my ($response) = @args{@required_args};
PTDEBUG && _d('Server response:', $response);
my %items = map {
my ($item, $type, $vars) = split(";", $_);
my (@vars) = split(",", ($vars || ''));
$item => {
item => $item,
type => $type,
vars => \@vars,
};
} split("\n", $response);
PTDEBUG && _d('Items:', Dumper(\%items));
return \%items;
}
sub get_versions {
my ($self, %args) = @_;
my @required_args = qw(items);
foreach my $arg ( @required_args ) {
die "I need a $arg arugment" unless $args{$arg};
}
my ($items) = @args{@required_args};
my $dbh = $args{dbh}; # optional
my %versions;
foreach my $item ( values %$items ) {
next unless $self->valid_item($item);
eval {
my $func = 'get_' . $item->{type};
my $version = $self->$func(
item => $item,
dbh => $dbh,
);
if ( $version ) {
chomp $version;
$versions{$item->{item}} = $version;
}
};
if ( $EVAL_ERROR ) {
PTDEBUG && _d('Error getting version for', Dumper($item), $EVAL_ERROR);
}
}
return \%versions;
}
sub valid_item {
my ($self, $item) = @_;
return 1;
}
sub get_os {
my ($self) = @_;
chomp(my $platform = `uname -s`);
PTDEBUG && _d('platform:', $platform);
return unless $platform;
chomp(my $lsb_release
= `which lsb_release 2>/dev/null | awk '{print \$1}'` || '');
PTDEBUG && _d('lsb_release:', $lsb_release);
my $release = "";
if ( $platform eq 'Linux' ) {
if ( -f "/etc/fedora-release" ) {
$release = `cat /etc/fedora-release`;
}
elsif ( -f "/etc/redhat-release" ) {
$release = `cat /etc/redhat-release`;
}
elsif ( -f "/etc/system-release" ) {
$release = `cat /etc/system-release`;
}
elsif ( $lsb_release ) {
$release = `$lsb_release -ds`;
}
elsif ( -f "/etc/lsb-release" ) {
$release = `grep DISTRIB_DESCRIPTION /etc/lsb-release`;
$release =~ s/^\w+="([^"]+)".+/$1/;
}
elsif ( -f "/etc/debian_version" ) {
chomp(my $rel = `cat /etc/debian_version`);
$release = "Debian $rel";
if ( -f "/etc/apt/sources.list" ) {
chomp(my $code_name = `awk '/^deb/ {print \$3}' /etc/apt/sources.list | awk -F/ '{print \$1}'| awk 'BEGIN {FS="|"} {print \$1}' | sort | uniq -c | sort -rn | head -n1 | awk '{print \$2}'`);
$release .= " ($code_name)" if $code_name;
}
}
elsif ( `ls /etc/*release 2>/dev/null` ) {
if ( `grep DISTRIB_DESCRIPTION /etc/*release 2>/dev/null` ) {
$release = `grep DISTRIB_DESCRIPTION /etc/*release | head -n1`;
}
else {
$release = `cat /etc/*release | head -n1`;
}
}
}
elsif ( $platform =~ m/^(BSD|Darwin)$/ ) {
my $rel = `uname -r`;
$release = "$platform $rel";
}
elsif ( $platform eq "SunOS" ) {
my $rel = `head -n1 /etc/release` || `uname -r`;
$release = "$platform $rel";
}
if ( !$release ) {
PTDEBUG && _d('Failed to get the release, using platform');
$release = $platform;
}
chomp($release);
PTDEBUG && _d('OS version =', $release);
return $release;
}
sub get_perl_variable {
my ($self, %args) = @_;
my $item = $args{item};
return unless $item;
# If there's a var, then its an explicit Perl variable name to get,
# else the item name is an implicity Perl module name to which we
# append ::VERSION to get the module's version.
my $var = $item->{vars}->[0] || ($item->{item} . '::VERSION');
my $version = do { no strict; ${*{$var}}; };
PTDEBUG && _d('Perl version for', $var, '=', "$version");
# Explicitly stringify this else $PERL_VERSION will return
# as a version object.
return $version ? "$version" : $version;
}
sub get_mysql_variable {
my $self = shift;
return $self->_get_from_mysql(
show => 'VARIABLES',
@_,
);
}
# This isn't implemented yet. It's easy to do (TYPE=mysql_status),
# but it may be overkill.
#sub get_mysql_status {
# my $self = shift;
# return $self->_get_from_mysql(
# show => 'STATUS',
# @_,
# );
#}
sub _get_from_mysql {
my ($self, %args) = @_;
my $show = $args{show};
my $item = $args{item};
my $dbh = $args{dbh};
return unless $show && $item && $dbh;
local $dbh->{FetchHashKeyName} = 'NAME_lc';
my $sql = qq/SHOW $show/;
PTDEBUG && _d($sql);
my $rows = $dbh->selectall_hashref($sql, 'variable_name');
my @versions;
foreach my $var ( @{$item->{vars}} ) {
$var = lc($var);
my $version = $rows->{$var}->{value};
PTDEBUG && _d('MySQL version for', $item->{item}, '=', $version);
push @versions, $version;
}
return join(' ', @versions);
}
sub _d {
my ($package, undef, $line) = caller 0;
@_ = map { (my $temp = $_) =~ s/\n/\n# /g; $temp; }
map { defined $_ ? $_ : 'undef' }
@_;
print STDERR "# $package:$line $PID ", join(' ', @_), "\n";
}
1;
}
# ###########################################################################
# End VersionCheck package
# ###########################################################################