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mk-table-checksum
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#!/usr/bin/env perl
# This program checksums MySQL tables efficiently on one or more servers.
#
# This program is copyright 2007-2011 Baron Schwartz.
# 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
# MERCHANTABILITY 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.
use strict;
use warnings FATAL => 'all';
our $VERSION = '1.2.23';
our $DISTRIB = '7540';
our $SVN_REV = sprintf("%d", (q$Revision: 7527 $ =~ m/(\d+)/g, 0));
# ###########################################################################
# TableParser package 7156
# This package is a copy without comments from the original. The original
# with comments and its test file can be found in the SVN repository at,
# trunk/common/TableParser.pm
# trunk/common/t/TableParser.t
# See http://code.google.com/p/maatkit/wiki/Developers for more information.
# ###########################################################################
package TableParser;
use strict;
use warnings FATAL => 'all';
use English qw(-no_match_vars);
use Data::Dumper;
$Data::Dumper::Indent = 1;
$Data::Dumper::Sortkeys = 1;
$Data::Dumper::Quotekeys = 0;
use constant MKDEBUG => $ENV{MKDEBUG} || 0;
sub new {
my ( $class, %args ) = @_;
my @required_args = qw(Quoter);
foreach my $arg ( @required_args ) {
die "I need a $arg argument" unless $args{$arg};
}
my $self = { %args };
return bless $self, $class;
}
sub parse {
my ( $self, $ddl, $opts ) = @_;
return unless $ddl;
if ( ref $ddl eq 'ARRAY' ) {
if ( lc $ddl->[0] eq 'table' ) {
$ddl = $ddl->[1];
}
else {
return {
engine => 'VIEW',
};
}
}
if ( $ddl !~ m/CREATE (?:TEMPORARY )?TABLE `/ ) {
die "Cannot parse table definition; is ANSI quoting "
. "enabled or SQL_QUOTE_SHOW_CREATE disabled?";
}
my ($name) = $ddl =~ m/CREATE (?:TEMPORARY )?TABLE\s+(`.+?`)/;
(undef, $name) = $self->{Quoter}->split_unquote($name) if $name;
$ddl =~ s/(`[^`]+`)/\L$1/g;
my $engine = $self->get_engine($ddl);
my @defs = $ddl =~ m/^(\s+`.*?),?$/gm;
my @cols = map { $_ =~ m/`([^`]+)`/ } @defs;
MKDEBUG && _d('Table cols:', join(', ', map { "`$_`" } @cols));
my %def_for;
@def_for{@cols} = @defs;
my (@nums, @null);
my (%type_for, %is_nullable, %is_numeric, %is_autoinc);
foreach my $col ( @cols ) {
my $def = $def_for{$col};
my ( $type ) = $def =~ m/`[^`]+`\s([a-z]+)/;
die "Can't determine column type for $def" unless $type;
$type_for{$col} = $type;
if ( $type =~ m/(?:(?:tiny|big|medium|small)?int|float|double|decimal|year)/ ) {
push @nums, $col;
$is_numeric{$col} = 1;
}
if ( $def !~ m/NOT NULL/ ) {
push @null, $col;
$is_nullable{$col} = 1;
}
$is_autoinc{$col} = $def =~ m/AUTO_INCREMENT/i ? 1 : 0;
}
my ($keys, $clustered_key) = $self->get_keys($ddl, $opts, \%is_nullable);
my ($charset) = $ddl =~ m/DEFAULT CHARSET=(\w+)/;
return {
name => $name,
cols => \@cols,
col_posn => { map { $cols[$_] => $_ } 0..$#cols },
is_col => { map { $_ => 1 } @cols },
null_cols => \@null,
is_nullable => \%is_nullable,
is_autoinc => \%is_autoinc,
clustered_key => $clustered_key,
keys => $keys,
defs => \%def_for,
numeric_cols => \@nums,
is_numeric => \%is_numeric,
engine => $engine,
type_for => \%type_for,
charset => $charset,
};
}
sub sort_indexes {
my ( $self, $tbl ) = @_;
my @indexes
= sort {
(($a ne 'PRIMARY') <=> ($b ne 'PRIMARY'))
|| ( !$tbl->{keys}->{$a}->{is_unique} <=> !$tbl->{keys}->{$b}->{is_unique} )
|| ( $tbl->{keys}->{$a}->{is_nullable} <=> $tbl->{keys}->{$b}->{is_nullable} )
|| ( scalar(@{$tbl->{keys}->{$a}->{cols}}) <=> scalar(@{$tbl->{keys}->{$b}->{cols}}) )
}
grep {
$tbl->{keys}->{$_}->{type} eq 'BTREE'
}
sort keys %{$tbl->{keys}};
MKDEBUG && _d('Indexes sorted best-first:', join(', ', @indexes));
return @indexes;
}
sub find_best_index {
my ( $self, $tbl, $index ) = @_;
my $best;
if ( $index ) {
($best) = grep { uc $_ eq uc $index } keys %{$tbl->{keys}};
}
if ( !$best ) {
if ( $index ) {
die "Index '$index' does not exist in table";
}
else {
($best) = $self->sort_indexes($tbl);
}
}
MKDEBUG && _d('Best index found is', $best);
return $best;
}
sub find_possible_keys {
my ( $self, $dbh, $database, $table, $quoter, $where ) = @_;
return () unless $where;
my $sql = 'EXPLAIN SELECT * FROM ' . $quoter->quote($database, $table)
. ' WHERE ' . $where;
MKDEBUG && _d($sql);
my $expl = $dbh->selectrow_hashref($sql);
$expl = { map { lc($_) => $expl->{$_} } keys %$expl };
if ( $expl->{possible_keys} ) {
MKDEBUG && _d('possible_keys =', $expl->{possible_keys});
my @candidates = split(',', $expl->{possible_keys});
my %possible = map { $_ => 1 } @candidates;
if ( $expl->{key} ) {
MKDEBUG && _d('MySQL chose', $expl->{key});
unshift @candidates, grep { $possible{$_} } split(',', $expl->{key});
MKDEBUG && _d('Before deduping:', join(', ', @candidates));
my %seen;
@candidates = grep { !$seen{$_}++ } @candidates;
}
MKDEBUG && _d('Final list:', join(', ', @candidates));
return @candidates;
}
else {
MKDEBUG && _d('No keys in possible_keys');
return ();
}
}
sub check_table {
my ( $self, %args ) = @_;
my @required_args = qw(dbh db tbl);
foreach my $arg ( @required_args ) {
die "I need a $arg argument" unless $args{$arg};
}
my ($dbh, $db, $tbl) = @args{@required_args};
my $q = $self->{Quoter};
my $db_tbl = $q->quote($db, $tbl);
MKDEBUG && _d('Checking', $db_tbl);
my $sql = "SHOW TABLES FROM " . $q->quote($db)
. ' LIKE ' . $q->literal_like($tbl);
MKDEBUG && _d($sql);
my $row;
eval {
$row = $dbh->selectrow_arrayref($sql);
};
if ( $EVAL_ERROR ) {
MKDEBUG && _d($EVAL_ERROR);
return 0;
}
if ( !$row->[0] || $row->[0] ne $tbl ) {
MKDEBUG && _d('Table does not exist');
return 0;
}
MKDEBUG && _d('Table exists; no privs to check');
return 1 unless $args{all_privs};
$sql = "SHOW FULL COLUMNS FROM $db_tbl";
MKDEBUG && _d($sql);
eval {
$row = $dbh->selectrow_hashref($sql);
};
if ( $EVAL_ERROR ) {
MKDEBUG && _d($EVAL_ERROR);
return 0;
}
if ( !scalar keys %$row ) {
MKDEBUG && _d('Table has no columns:', Dumper($row));
return 0;
}
my $privs = $row->{privileges} || $row->{Privileges};
$sql = "DELETE FROM $db_tbl LIMIT 0";
MKDEBUG && _d($sql);
eval {
$dbh->do($sql);
};
my $can_delete = $EVAL_ERROR ? 0 : 1;
MKDEBUG && _d('User privs on', $db_tbl, ':', $privs,
($can_delete ? 'delete' : ''));
if ( !($privs =~ m/select/ && $privs =~ m/insert/ && $privs =~ m/update/
&& $can_delete) ) {
MKDEBUG && _d('User does not have all privs');
return 0;
}
MKDEBUG && _d('User has all privs');
return 1;
}
sub get_engine {
my ( $self, $ddl, $opts ) = @_;
my ( $engine ) = $ddl =~ m/\).*?(?:ENGINE|TYPE)=(\w+)/;
MKDEBUG && _d('Storage engine:', $engine);
return $engine || undef;
}
sub get_keys {
my ( $self, $ddl, $opts, $is_nullable ) = @_;
my $engine = $self->get_engine($ddl);
my $keys = {};
my $clustered_key = undef;
KEY:
foreach my $key ( $ddl =~ m/^ ((?:[A-Z]+ )?KEY .*)$/gm ) {
next KEY if $key =~ m/FOREIGN/;
my $key_ddl = $key;
MKDEBUG && _d('Parsed key:', $key_ddl);
if ( $engine !~ m/MEMORY|HEAP/ ) {
$key =~ s/USING HASH/USING BTREE/;
}
my ( $type, $cols ) = $key =~ m/(?:USING (\w+))? \((.+)\)/;
my ( $special ) = $key =~ m/(FULLTEXT|SPATIAL)/;
$type = $type || $special || 'BTREE';
if ( $opts->{mysql_version} && $opts->{mysql_version} lt '004001000'
&& $engine =~ m/HEAP|MEMORY/i )
{
$type = 'HASH'; # MySQL pre-4.1 supports only HASH indexes on HEAP
}
my ($name) = $key =~ m/(PRIMARY|`[^`]*`)/;
my $unique = $key =~ m/PRIMARY|UNIQUE/ ? 1 : 0;
my @cols;
my @col_prefixes;
foreach my $col_def ( $cols =~ m/`[^`]+`(?:\(\d+\))?/g ) {
my ($name, $prefix) = $col_def =~ m/`([^`]+)`(?:\((\d+)\))?/;
push @cols, $name;
push @col_prefixes, $prefix;
}
$name =~ s/`//g;
MKDEBUG && _d( $name, 'key cols:', join(', ', map { "`$_`" } @cols));
$keys->{$name} = {
name => $name,
type => $type,
colnames => $cols,
cols => \@cols,
col_prefixes => \@col_prefixes,
is_unique => $unique,
is_nullable => scalar(grep { $is_nullable->{$_} } @cols),
is_col => { map { $_ => 1 } @cols },
ddl => $key_ddl,
};
if ( $engine =~ m/InnoDB/i && !$clustered_key ) {
my $this_key = $keys->{$name};
if ( $this_key->{name} eq 'PRIMARY' ) {
$clustered_key = 'PRIMARY';
}
elsif ( $this_key->{is_unique} && !$this_key->{is_nullable} ) {
$clustered_key = $this_key->{name};
}
MKDEBUG && $clustered_key && _d('This key is the clustered key');
}
}
return $keys, $clustered_key;
}
sub get_fks {
my ( $self, $ddl, $opts ) = @_;
my $fks = {};
foreach my $fk (
$ddl =~ m/CONSTRAINT .* FOREIGN KEY .* REFERENCES [^\)]*\)/mg )
{
my ( $name ) = $fk =~ m/CONSTRAINT `(.*?)`/;
my ( $cols ) = $fk =~ m/FOREIGN KEY \(([^\)]+)\)/;
my ( $parent, $parent_cols ) = $fk =~ m/REFERENCES (\S+) \(([^\)]+)\)/;
if ( $parent !~ m/\./ && $opts->{database} ) {
$parent = "`$opts->{database}`.$parent";
}
$fks->{$name} = {
name => $name,
colnames => $cols,
cols => [ map { s/[ `]+//g; $_; } split(',', $cols) ],
parent_tbl => $parent,
parent_colnames=> $parent_cols,
parent_cols => [ map { s/[ `]+//g; $_; } split(',', $parent_cols) ],
ddl => $fk,
};
}
return $fks;
}
sub remove_auto_increment {
my ( $self, $ddl ) = @_;
$ddl =~ s/(^\).*?) AUTO_INCREMENT=\d+\b/$1/m;
return $ddl;
}
sub remove_secondary_indexes {
my ( $self, $ddl ) = @_;
my $sec_indexes_ddl;
my $tbl_struct = $self->parse($ddl);
if ( ($tbl_struct->{engine} || '') =~ m/InnoDB/i ) {
my $clustered_key = $tbl_struct->{clustered_key};
$clustered_key ||= '';
my @sec_indexes = map {
my $key_def = $_->{ddl};
$key_def =~ s/([\(\)])/\\$1/g;
$ddl =~ s/\s+$key_def//i;
my $key_ddl = "ADD $_->{ddl}";
$key_ddl .= ',' unless $key_ddl =~ m/,$/;
$key_ddl;
}
grep { $_->{name} ne $clustered_key }
values %{$tbl_struct->{keys}};
MKDEBUG && _d('Secondary indexes:', Dumper(\@sec_indexes));
if ( @sec_indexes ) {
$sec_indexes_ddl = join(' ', @sec_indexes);
$sec_indexes_ddl =~ s/,$//;
}
$ddl =~ s/,(\n\) )/$1/s;
}
else {
MKDEBUG && _d('Not removing secondary indexes from',
$tbl_struct->{engine}, 'table');
}
return $ddl, $sec_indexes_ddl, $tbl_struct;
}
sub _d {
my ($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 TableParser package
# ###########################################################################
# ###########################################################################
# TableChecksum package 7080
# This package is a copy without comments from the original. The original
# with comments and its test file can be found in the SVN repository at,
# trunk/common/TableChecksum.pm
# trunk/common/t/TableChecksum.t
# See http://code.google.com/p/maatkit/wiki/Developers for more information.
# ###########################################################################
package TableChecksum;
use strict;
use warnings FATAL => 'all';
use English qw(-no_match_vars);
use List::Util qw(max);
use constant MKDEBUG => $ENV{MKDEBUG} || 0;
our %ALGOS = (
CHECKSUM => { pref => 0, hash => 0 },
BIT_XOR => { pref => 2, hash => 1 },
ACCUM => { pref => 3, hash => 1 },
);
sub new {
my ( $class, %args ) = @_;
foreach my $arg ( qw(Quoter VersionParser) ) {
die "I need a $arg argument" unless defined $args{$arg};
}
my $self = { %args };
return bless $self, $class;
}
sub crc32 {
my ( $self, $string ) = @_;
my $poly = 0xEDB88320;
my $crc = 0xFFFFFFFF;
foreach my $char ( split(//, $string) ) {
my $comp = ($crc ^ ord($char)) & 0xFF;
for ( 1 .. 8 ) {
$comp = $comp & 1 ? $poly ^ ($comp >> 1) : $comp >> 1;
}
$crc = (($crc >> 8) & 0x00FFFFFF) ^ $comp;
}
return $crc ^ 0xFFFFFFFF;
}
sub get_crc_wid {
my ( $self, $dbh, $func ) = @_;
my $crc_wid = 16;
if ( uc $func ne 'FNV_64' && uc $func ne 'FNV1A_64' ) {
eval {
my ($val) = $dbh->selectrow_array("SELECT $func('a')");
$crc_wid = max(16, length($val));
};
}
return $crc_wid;
}
sub get_crc_type {
my ( $self, $dbh, $func ) = @_;
my $type = '';
my $length = 0;
my $sql = "SELECT $func('a')";
my $sth = $dbh->prepare($sql);
eval {
$sth->execute();
$type = $sth->{mysql_type_name}->[0];
$length = $sth->{mysql_length}->[0];
MKDEBUG && _d($sql, $type, $length);
if ( $type eq 'bigint' && $length < 20 ) {
$type = 'int';
}
};
$sth->finish;
MKDEBUG && _d('crc_type:', $type, 'length:', $length);
return ($type, $length);
}
sub best_algorithm {
my ( $self, %args ) = @_;
my ( $alg, $dbh ) = @args{ qw(algorithm dbh) };
my $vp = $self->{VersionParser};
my @choices = sort { $ALGOS{$a}->{pref} <=> $ALGOS{$b}->{pref} } keys %ALGOS;
die "Invalid checksum algorithm $alg"
if $alg && !$ALGOS{$alg};
if (
$args{where} || $args{chunk} # CHECKSUM does whole table
|| $args{replicate} # CHECKSUM can't do INSERT.. SELECT
|| !$vp->version_ge($dbh, '4.1.1')) # CHECKSUM doesn't exist
{
MKDEBUG && _d('Cannot use CHECKSUM algorithm');
@choices = grep { $_ ne 'CHECKSUM' } @choices;
}
if ( !$vp->version_ge($dbh, '4.1.1') ) {
MKDEBUG && _d('Cannot use BIT_XOR algorithm because MySQL < 4.1.1');
@choices = grep { $_ ne 'BIT_XOR' } @choices;
}
if ( $alg && grep { $_ eq $alg } @choices ) {
MKDEBUG && _d('User requested', $alg, 'algorithm');
return $alg;
}
if ( $args{count} && grep { $_ ne 'CHECKSUM' } @choices ) {
MKDEBUG && _d('Not using CHECKSUM algorithm because COUNT desired');
@choices = grep { $_ ne 'CHECKSUM' } @choices;
}
MKDEBUG && _d('Algorithms, in order:', @choices);
return $choices[0];
}
sub is_hash_algorithm {
my ( $self, $algorithm ) = @_;
return $ALGOS{$algorithm} && $ALGOS{$algorithm}->{hash};
}
sub choose_hash_func {
my ( $self, %args ) = @_;
my @funcs = qw(CRC32 FNV1A_64 FNV_64 MD5 SHA1);
if ( $args{function} ) {
unshift @funcs, $args{function};
}
my ($result, $error);
do {
my $func;
eval {
$func = shift(@funcs);
my $sql = "SELECT $func('test-string')";
MKDEBUG && _d($sql);
$args{dbh}->do($sql);
$result = $func;
};
if ( $EVAL_ERROR && $EVAL_ERROR =~ m/failed: (.*?) at \S+ line/ ) {
$error .= qq{$func cannot be used because "$1"\n};
MKDEBUG && _d($func, 'cannot be used because', $1);
}
} while ( @funcs && !$result );
die $error unless $result;
MKDEBUG && _d('Chosen hash func:', $result);
return $result;
}
sub optimize_xor {
my ( $self, %args ) = @_;
my ($dbh, $func) = @args{qw(dbh function)};
die "$func never needs the BIT_XOR optimization"
if $func =~ m/^(?:FNV1A_64|FNV_64|CRC32)$/i;
my $opt_slice = 0;
my $unsliced = uc $dbh->selectall_arrayref("SELECT $func('a')")->[0]->[0];
my $sliced = '';
my $start = 1;
my $crc_wid = length($unsliced) < 16 ? 16 : length($unsliced);
do { # Try different positions till sliced result equals non-sliced.
MKDEBUG && _d('Trying slice', $opt_slice);
$dbh->do('SET @crc := "", @cnt := 0');
my $slices = $self->make_xor_slices(
query => "\@crc := $func('a')",
crc_wid => $crc_wid,
opt_slice => $opt_slice,
);
my $sql = "SELECT CONCAT($slices) AS TEST FROM (SELECT NULL) AS x";
$sliced = ($dbh->selectrow_array($sql))[0];
if ( $sliced ne $unsliced ) {
MKDEBUG && _d('Slice', $opt_slice, 'does not work');
$start += 16;
++$opt_slice;
}
} while ( $start < $crc_wid && $sliced ne $unsliced );
if ( $sliced eq $unsliced ) {
MKDEBUG && _d('Slice', $opt_slice, 'works');
return $opt_slice;
}
else {
MKDEBUG && _d('No slice works');
return undef;
}
}
sub make_xor_slices {
my ( $self, %args ) = @_;
foreach my $arg ( qw(query crc_wid) ) {
die "I need a $arg argument" unless defined $args{$arg};
}
my ( $query, $crc_wid, $opt_slice ) = @args{qw(query crc_wid opt_slice)};
my @slices;
for ( my $start = 1; $start <= $crc_wid; $start += 16 ) {
my $len = $crc_wid - $start + 1;
if ( $len > 16 ) {
$len = 16;
}
push @slices,
"LPAD(CONV(BIT_XOR("
. "CAST(CONV(SUBSTRING(\@crc, $start, $len), 16, 10) AS UNSIGNED))"
. ", 10, 16), $len, '0')";
}
if ( defined $opt_slice && $opt_slice < @slices ) {
$slices[$opt_slice] =~ s/\@crc/\@crc := $query/;
}
else {
map { s/\@crc/$query/ } @slices;
}
return join(', ', @slices);
}
sub make_row_checksum {
my ( $self, %args ) = @_;
my ( $tbl_struct, $func ) = @args{ qw(tbl_struct function) };
my $q = $self->{Quoter};
my $sep = $args{sep} || '#';
$sep =~ s/'//g;
$sep ||= '#';
my $ignorecols = $args{ignorecols} || {};
my %cols = map { lc($_) => 1 }
grep { !exists $ignorecols->{$_} }
($args{cols} ? @{$args{cols}} : @{$tbl_struct->{cols}});
my %seen;
my @cols =
map {
my $type = $tbl_struct->{type_for}->{$_};
my $result = $q->quote($_);
if ( $type eq 'timestamp' ) {
$result .= ' + 0';
}
elsif ( $args{float_precision} && $type =~ m/float|double/ ) {
$result = "ROUND($result, $args{float_precision})";
}
elsif ( $args{trim} && $type =~ m/varchar/ ) {
$result = "TRIM($result)";
}
$result;
}
grep {
$cols{$_} && !$seen{$_}++
}
@{$tbl_struct->{cols}};
my $query;
if ( !$args{no_cols} ) {
$query = join(', ',
map {
my $col = $_;
if ( $col =~ m/\+ 0/ ) {
my ($real_col) = /^(\S+)/;
$col .= " AS $real_col";
}
elsif ( $col =~ m/TRIM/ ) {
my ($real_col) = m/TRIM\(([^\)]+)\)/;
$col .= " AS $real_col";
}
$col;
} @cols)
. ', ';
}
if ( uc $func ne 'FNV_64' && uc $func ne 'FNV1A_64' ) {
my @nulls = grep { $cols{$_} } @{$tbl_struct->{null_cols}};
if ( @nulls ) {
my $bitmap = "CONCAT("
. join(', ', map { 'ISNULL(' . $q->quote($_) . ')' } @nulls)
. ")";
push @cols, $bitmap;
}
$query .= @cols > 1
? "$func(CONCAT_WS('$sep', " . join(', ', @cols) . '))'
: "$func($cols[0])";
}
else {
my $fnv_func = uc $func;
$query .= "$fnv_func(" . join(', ', @cols) . ')';
}
return $query;
}
sub make_checksum_query {
my ( $self, %args ) = @_;
my @required_args = qw(db tbl tbl_struct algorithm crc_wid crc_type);
foreach my $arg( @required_args ) {
die "I need a $arg argument" unless $args{$arg};
}
my ( $db, $tbl, $tbl_struct, $algorithm,
$crc_wid, $crc_type) = @args{@required_args};
my $func = $args{function};
my $q = $self->{Quoter};
my $result;
die "Invalid or missing checksum algorithm"
unless $algorithm && $ALGOS{$algorithm};
if ( $algorithm eq 'CHECKSUM' ) {
return "CHECKSUM TABLE " . $q->quote($db, $tbl);
}
my $expr = $self->make_row_checksum(%args, no_cols=>1);
if ( $algorithm eq 'BIT_XOR' ) {
if ( $crc_type =~ m/int$/ ) {
$result = "COALESCE(LOWER(CONV(BIT_XOR(CAST($expr AS UNSIGNED)), 10, 16)), 0) AS crc ";
}
else {
my $slices = $self->make_xor_slices( query => $expr, %args );
$result = "COALESCE(LOWER(CONCAT($slices)), 0) AS crc ";
}
}
else {
if ( $crc_type =~ m/int$/ ) {
$result = "COALESCE(RIGHT(MAX("
. "\@crc := CONCAT(LPAD(\@cnt := \@cnt + 1, 16, '0'), "
. "CONV(CAST($func(CONCAT(\@crc, $expr)) AS UNSIGNED), 10, 16))"
. "), $crc_wid), 0) AS crc ";
}
else {
$result = "COALESCE(RIGHT(MAX("
. "\@crc := CONCAT(LPAD(\@cnt := \@cnt + 1, 16, '0'), "
. "$func(CONCAT(\@crc, $expr)))"
. "), $crc_wid), 0) AS crc ";
}
}
if ( $args{replicate} ) {
$result = "REPLACE /*PROGRESS_COMMENT*/ INTO $args{replicate} "
. "(db, tbl, chunk, boundaries, this_cnt, this_crc) "
. "SELECT ?, ?, /*CHUNK_NUM*/ ?, COUNT(*) AS cnt, $result";
}
else {
$result = "SELECT "
. ($args{buffer} ? 'SQL_BUFFER_RESULT ' : '')
. "/*PROGRESS_COMMENT*//*CHUNK_NUM*/ COUNT(*) AS cnt, $result";
}
return $result . "FROM /*DB_TBL*//*INDEX_HINT*//*WHERE*/";
}
sub find_replication_differences {
my ( $self, $dbh, $table ) = @_;
(my $sql = <<" EOF") =~ s/\s+/ /gm;
SELECT db, tbl, chunk, boundaries,
COALESCE(this_cnt-master_cnt, 0) AS cnt_diff,
COALESCE(
this_crc <> master_crc OR ISNULL(master_crc) <> ISNULL(this_crc),
0
) AS crc_diff,
this_cnt, master_cnt, this_crc, master_crc
FROM $table
WHERE master_cnt <> this_cnt OR master_crc <> this_crc
OR ISNULL(master_crc) <> ISNULL(this_crc)
EOF
MKDEBUG && _d($sql);
my $diffs = $dbh->selectall_arrayref($sql, { Slice => {} });
return @$diffs;
}
sub _d {
my ($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 TableChecksum package
# ###########################################################################
# ###########################################################################
# OptionParser package 7102
# This package is a copy without comments from the original. The original
# with comments and its test file can be found in the SVN repository at,
# trunk/common/OptionParser.pm
# trunk/common/t/OptionParser.t
# See http://code.google.com/p/maatkit/wiki/Developers for more information.
# ###########################################################################
package OptionParser;
use strict;
use warnings FATAL => 'all';
use List::Util qw(max);
use English qw(-no_match_vars);
use constant MKDEBUG => $ENV{MKDEBUG} || 0;
use Getopt::Long;
my $POD_link_re = '[LC]<"?([^">]+)"?>';
sub new {
my ( $class, %args ) = @_;
my @required_args = qw();
foreach my $arg ( @required_args ) {
die "I need a $arg argument" unless $args{$arg};
}
my ($program_name) = $PROGRAM_NAME =~ m/([.A-Za-z-]+)$/;
$program_name ||= $PROGRAM_NAME;
my $home = $ENV{HOME} || $ENV{HOMEPATH} || $ENV{USERPROFILE} || '.';
my %attributes = (
'type' => 1,
'short form' => 1,
'group' => 1,
'default' => 1,
'cumulative' => 1,
'negatable' => 1,
);
my $self = {
head1 => 'OPTIONS', # These args are used internally
skip_rules => 0, # to instantiate another Option-
item => '--(.*)', # Parser obj that parses the
attributes => \%attributes, # DSN OPTIONS section. Tools
parse_attributes => \&_parse_attribs, # don't tinker with these args.
%args,
strict => 1, # disabled by a special rule
program_name => $program_name,
opts => {},
got_opts => 0,
short_opts => {},
defaults => {},
groups => {},
allowed_groups => {},
errors => [],
rules => [], # desc of rules for --help
mutex => [], # rule: opts are mutually exclusive
atleast1 => [], # rule: at least one opt is required
disables => {}, # rule: opt disables other opts
defaults_to => {}, # rule: opt defaults to value of other opt
DSNParser => undef,
default_files => [
"/etc/maatkit/maatkit.conf",
"/etc/maatkit/$program_name.conf",
"$home/.maatkit.conf",
"$home/.$program_name.conf",
],
types => {
string => 's', # standard Getopt type
int => 'i', # standard Getopt type
float => 'f', # standard Getopt type
Hash => 'H', # hash, formed from a comma-separated list
hash => 'h', # hash as above, but only if a value is given
Array => 'A', # array, similar to Hash
array => 'a', # array, similar to hash
DSN => 'd', # DSN
size => 'z', # size with kMG suffix (powers of 2^10)
time => 'm', # time, with an optional suffix of s/h/m/d
},
};
return bless $self, $class;
}
sub get_specs {
my ( $self, $file ) = @_;
$file ||= $self->{file} || __FILE__;
my @specs = $self->_pod_to_specs($file);
$self->_parse_specs(@specs);
open my $fh, "<", $file or die "Cannot open $file: $OS_ERROR";
my $contents = do { local $/ = undef; <$fh> };
close $fh;
if ( $contents =~ m/^=head1 DSN OPTIONS/m ) {
MKDEBUG && _d('Parsing DSN OPTIONS');
my $dsn_attribs = {
dsn => 1,
copy => 1,
};
my $parse_dsn_attribs = sub {
my ( $self, $option, $attribs ) = @_;
map {
my $val = $attribs->{$_};
if ( $val ) {
$val = $val eq 'yes' ? 1
: $val eq 'no' ? 0
: $val;
$attribs->{$_} = $val;
}
} keys %$attribs;
return {
key => $option,
%$attribs,
};
};
my $dsn_o = new OptionParser(
description => 'DSN OPTIONS',
head1 => 'DSN OPTIONS',
dsn => 0, # XXX don't infinitely recurse!
item => '\* (.)', # key opts are a single character
skip_rules => 1, # no rules before opts
attributes => $dsn_attribs,
parse_attributes => $parse_dsn_attribs,
);
my @dsn_opts = map {
my $opts = {
key => $_->{spec}->{key},
dsn => $_->{spec}->{dsn},
copy => $_->{spec}->{copy},
desc => $_->{desc},
};
$opts;
} $dsn_o->_pod_to_specs($file);
$self->{DSNParser} = DSNParser->new(opts => \@dsn_opts);
}
return;
}
sub DSNParser {
my ( $self ) = @_;
return $self->{DSNParser};
};
sub get_defaults_files {
my ( $self ) = @_;
return @{$self->{default_files}};
}
sub _pod_to_specs {
my ( $self, $file ) = @_;
$file ||= $self->{file} || __FILE__;
open my $fh, '<', $file or die "Cannot open $file: $OS_ERROR";
my @specs = ();
my @rules = ();
my $para;
local $INPUT_RECORD_SEPARATOR = '';
while ( $para = <$fh> ) {
next unless $para =~ m/^=head1 $self->{head1}/;
last;
}
while ( $para = <$fh> ) {
last if $para =~ m/^=over/;
next if $self->{skip_rules};
chomp $para;
$para =~ s/\s+/ /g;
$para =~ s/$POD_link_re/$1/go;
MKDEBUG && _d('Option rule:', $para);
push @rules, $para;
}
die "POD has no $self->{head1} section" unless $para;
do {
if ( my ($option) = $para =~ m/^=item $self->{item}/ ) {
chomp $para;
MKDEBUG && _d($para);
my %attribs;
$para = <$fh>; # read next paragraph, possibly attributes
if ( $para =~ m/: / ) { # attributes
$para =~ s/\s+\Z//g;
%attribs = map {
my ( $attrib, $val) = split(/: /, $_);
die "Unrecognized attribute for --$option: $attrib"
unless $self->{attributes}->{$attrib};
($attrib, $val);