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populateCucComment.php
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populateCucComment.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
*/
namespace MediaWiki\CheckUser\Maintenance;
use MediaWiki\Maintenance\LoggedUpdateMaintenance;
$IP = getenv( 'MW_INSTALL_PATH' );
if ( $IP === false ) {
$IP = __DIR__ . '/../../..';
}
require_once "$IP/maintenance/Maintenance.php";
/**
* Maintenance script for filling up cuc_comment_id.
*
* @author Zabe
*/
class PopulateCucComment extends LoggedUpdateMaintenance {
public function __construct() {
parent::__construct();
$this->requireExtension( 'CheckUser' );
$this->addDescription( 'Populate the cuc_comment_id column.' );
$this->addOption(
'sleep',
'Sleep time (in seconds) between every batch. Default: 0',
false,
true
);
$this->addOption( 'start', 'Start after this cuc_id', false, true );
}
/**
* @inheritDoc
*/
protected function getUpdateKey() {
return 'PopulateCucComment';
}
/**
* @inheritDoc
*/
protected function doDBUpdates() {
$services = $this->getServiceContainer();
$commentStore = $services->getCommentStore();
$mainLb = $services->getDBLoadBalancerFactory()->getMainLB();
$dbr = $mainLb->getConnection( DB_REPLICA, 'vslow' );
$dbw = $mainLb->getMaintenanceConnectionRef( DB_PRIMARY );
$batchSize = $this->getBatchSize();
$start = (int)$this->getOption( 'start', 0 );
if ( $start > 0 ) {
$prevId = $start;
} else {
$prevId = (int)$dbr->newSelectQueryBuilder()
->field( 'MIN(cuc_id)' )
->table( 'cu_changes' )
->caller( __METHOD__ )
->fetchField();
}
$curId = $prevId + $batchSize;
$maxId = (int)$dbr->newSelectQueryBuilder()
->field( 'MAX(cuc_id)' )
->table( 'cu_changes' )
->caller( __METHOD__ )
->fetchField();
if ( !$maxId ) {
$this->output( "The cu_changes table seems to be empty.\n" );
return true;
}
if ( !$dbw->fieldExists( 'cu_changes', 'cuc_comment' ) ) {
$this->output( "cuc_comment has already been dropped.\n" );
return true;
}
$this->output( "Populating the cuc_comment_id column...\n" );
$diff = $maxId - $prevId;
if ( $batchSize > $diff ) {
$batchSize = $diff;
}
$failed = 0;
$sleep = (int)$this->getOption( 'sleep', 0 );
do {
$res = $dbr->newSelectQueryBuilder()
->fields( [ 'cuc_id', 'cuc_comment' ] )
->table( 'cu_changes' )
->conds( [
'cuc_comment_id' => 0,
$dbr->expr( 'cuc_id', '>=', $prevId ),
$dbr->expr( 'cuc_id', '<=', $curId ),
] )
->caller( __METHOD__ )
->fetchResultSet();
foreach ( $res as $row ) {
$commentId = $commentStore->createComment( $dbw, $row->cuc_comment )->id;
if ( !$commentId ) {
$failed++;
continue;
}
$dbw->newUpdateQueryBuilder()
->update( 'cu_changes' )
->set( [ 'cuc_comment_id' => $commentId ] )
->where( [ 'cuc_id' => $row->cuc_id ] )
->caller( __METHOD__ )
->execute();
}
$this->waitForReplication();
if ( $sleep > 0 ) {
sleep( $sleep );
}
$this->output( "Processed $batchSize rows out of $diff.\n" );
$prevId = $curId;
$curId += $batchSize;
} while ( $prevId <= $maxId );
$this->output( "Done. Migration failed for $failed row(s).\n" );
return true;
}
}
$maintClass = PopulateCucComment::class;
require_once RUN_MAINTENANCE_IF_MAIN;

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populateCucComment.php (3 KB)

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