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storageTypeStats.php
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storageTypeStats.php
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<?php
/**
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance ExternalStorage
*/
// @codeCoverageIgnoreStart
require_once __DIR__ . '/../Maintenance.php';
// @codeCoverageIgnoreEnd
class StorageTypeStats extends Maintenance {
public function execute() {
$dbr = $this->getReplicaDB();
$endId = $dbr->newSelectQueryBuilder()
->select( 'MAX(old_id)' )
->from( 'text' )
->caller( __METHOD__ )->fetchField();
if ( !$endId ) {
$this->fatalError( 'No text rows!' );
}
$binSize = intval( 10 ** ( floor( log10( $endId ) ) - 3 ) );
if ( $binSize < 100 ) {
$binSize = 100;
}
echo "Using bin size of $binSize\n";
$stats = [];
$classSql = <<<SQL
IF(old_flags LIKE '%external%',
IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9a-f]{32}$',
'CGZ pointer',
IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9]{1,6}$',
'DHB pointer',
IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+$',
'simple pointer',
'UNKNOWN pointer'
)
)
),
IF(old_flags LIKE '%object%',
TRIM('"' FROM SUBSTRING_INDEX(SUBSTRING_INDEX(old_text, ':', 3), ':', -1)),
'[none]'
)
)
SQL;
for ( $rangeStart = 0; $rangeStart < $endId; $rangeStart += $binSize ) {
if ( $rangeStart / $binSize % 10 == 0 ) {
echo "$rangeStart\r";
}
$res = $dbr->newSelectQueryBuilder()
->select( [ 'old_flags', 'class' => $classSql, 'count' => 'COUNT(*)' ] )
->from( 'text' )
->where( $dbr->expr( 'old_id', '>=', intval( $rangeStart ) ) )
->andWhere( $dbr->expr( 'old_id', '<', intval( $rangeStart + $binSize ) ) )
->groupBy( [ 'old_flags', 'class' ] )
->caller( __METHOD__ )->fetchResultSet();
foreach ( $res as $row ) {
$flags = $row->old_flags;
if ( $flags === '' ) {
$flags = '[none]';
}
$class = $row->class;
$count = $row->count;
// @phan-suppress-next-line PhanImpossibleConditionInLoop,PhanPossiblyUndeclaredVariable False positive
if ( !isset( $stats[$flags][$class] ) ) {
$stats[$flags][$class] = [
'count' => 0,
'first' => $rangeStart,
'last' => 0
];
}
$entry =& $stats[$flags][$class];
$entry['count'] += $count;
$entry['last'] = max( $entry['last'], $rangeStart + $binSize );
unset( $entry );
}
}
echo "\n\n";
$format = "%-29s %-39s %-19s %-29s\n";
printf( $format, "Flags", "Class", "Count", "old_id range" );
echo str_repeat( '-', 120 ) . "\n";
foreach ( $stats as $flags => $flagStats ) {
foreach ( $flagStats as $class => $entry ) {
printf( $format, $flags, $class, $entry['count'],
sprintf( "%-13d - %-13d", $entry['first'], $entry['last'] ) );
}
}
}
}
// @codeCoverageIgnoreStart
$maintClass = StorageTypeStats::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd

File Metadata

Mime Type
text/x-php
Expires
Sat, Oct 3, 18:10 (11 h, 38 m)
Storage Engine
local-disk
Storage Format
Raw Data
Storage Handle
44/28/9c2a72f3672783b4707fc6aa7abe
Default Alt Text
storageTypeStats.php (3 KB)

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