mediawiki-extensions-Echo/maintenance/removeOrphanedEvents.php
Roan Kattouw 4c6cadfb27 Add script to remove orphaned event rows
Bug: T136425
Change-Id: Id42a893be81176f37d9d5e3fd7e850d3a6d42e10
2016-06-07 23:34:53 +02:00

71 lines
1.7 KiB
PHP

<?php
/**
* Remove rows from echo_event that don't have corresponding rows in echo_notification.
*
* @ingroup Maintenance
*/
require_once ( getenv( 'MW_INSTALL_PATH' ) !== false
? getenv( 'MW_INSTALL_PATH' ) . '/maintenance/Maintenance.php'
: __DIR__ . '/../../../maintenance/Maintenance.php' );
/**
* Maintenance script that removes orphaned event rows
*
* @ingroup Maintenance
*/
class RemoveOrphanedEvents extends LoggedUpdateMaintenance {
public function __construct() {
parent::__construct();
$this->mDescription = "Remove rows from echo_event that don't have corresponding rows in echo_notification";
$this->setBatchSize( 500 );
}
public function getUpdateKey() {
return __CLASS__;
}
public function doDBUpdates() {
$dbFactory = MWEchoDbFactory::newFromDefault();
$dbw = $dbFactory->getEchoDb( DB_MASTER );
$dbr = $dbFactory->getEchoDb( DB_SLAVE );
$iterator = new BatchRowIterator(
$dbr,
array( 'echo_event', 'echo_notification' ),
'event_id',
$this->mBatchSize
);
$iterator->addJoinConditions( array(
'echo_notification' => array( 'LEFT JOIN', 'notification_event=event_id' )
) );
$iterator->addConditions( array(
'notification_user' => null
) );
$this->output( "Removing orphaned echo_event rows...\n" );
$processed = 0;
foreach ( $iterator as $batch ) {
$ids = array();
foreach ( $batch as $row ) {
$ids[] = $row->event_id;
}
$dbw->delete(
'echo_event',
array( 'event_id' => $ids )
);
$processed += $dbw->affectedRows();
$this->output( "Deleted $processed orphaned rows.\n" );
$dbFactory->waitForSlaves();
}
return true;
}
}
$maintClass = 'RemoveOrphanedEvents';
require_once ( RUN_MAINTENANCE_IF_MAIN );