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CleanCNTranslateMetadata.php
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CleanCNTranslateMetadata.php
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<?php
use MediaWiki\Maintenance\Maintenance;
$IP = getenv( 'MW_INSTALL_PATH' );
if ( $IP === false ) {
$IP = __DIR__ . '/../../..';
}
require_once "$IP/maintenance/Maintenance.php";
/**
* Cleans up the Revision Tag table which is where CentralNotice stores
* metadata required for the Translate extension.
*
* So far this class:
* * Removes duplicate revision entries (there should be only one per banner)
* * Associates entries with a banner by name
* * Removes entries that have no banner object
*/
class CleanCNTranslateMetadata extends Maintenance {
/** @var string|null */
private $ttag;
public function __construct() {
parent::__construct();
$this->requireExtension( 'CentralNotice' );
}
public function execute() {
$this->ttag = Banner::TRANSLATE_BANNER_TAG;
$this->cleanDuplicates();
$this->populateIDs();
$this->deleteOrphans();
ChoiceDataProvider::invalidateCache();
}
/**
* Remove duplicated revtags
*/
private function cleanDuplicates() {
$this->output( "Cleaning duplicates\n" );
$db = CNDatabase::getDb( DB_PRIMARY );
$res = $db->newSelectQueryBuilder()
->select( [
'rt_page',
'maxrev' => 'MAX(rt_revision)',
'count' => 'COUNT(*)'
] )
->from( 'revtag' )
->where( [ 'rt_type' => $this->ttag ] )
->groupBy( 'rt_page' )
->caller( __METHOD__ )
->fetchResultSet();
foreach ( $res as $row ) {
if ( (int)$row->count === 1 ) {
continue;
}
$maxRev = (int)$row->maxrev;
$db->newDeleteQueryBuilder()
->deleteFrom( 'revtag' )
->where( [
'rt_type' => $this->ttag,
'rt_page' => $row->rt_page,
$db->expr( 'rt_revision', '!=', $maxRev ),
] )
->caller( __METHOD__ )
->execute();
$numRows = $db->affectedRows();
$this->output(
" -- Deleted {$numRows} rows for banner with page id {$row->rt_page}\n"
);
}
}
/**
* Attach a banner ID with a orphan metadata line
*/
private function populateIDs() {
$this->output( "Associating metadata with banner ids\n" );
$db = CNDatabase::getDb( DB_PRIMARY );
$res = $db->newSelectQueryBuilder()
->select( [ 'rt_page', 'rt_revision', 'page_title', 'tmp_id' ] )
->from( 'revtag' )
->join( 'page', null, 'rt_page=page_id' )
->join( 'cn_templates', null, [
# Length of "centralnotice-template-"
'tmp_name=substr(page_title, 24)'
] )
->where( [
'rt_type' => $this->ttag,
'rt_value' => null,
] )
->caller( __METHOD__ )
->fetchResultSet();
foreach ( $res as $row ) {
$this->output( " -- Associating banner id {$row->tmp_id} " .
"with revtag with page id {$row->rt_page}\n" );
$db->newUpdateQueryBuilder()
->update( 'revtag' )
->set( [ 'rt_value' => $row->tmp_id ] )
->where( [
'rt_type' => $this->ttag,
'rt_page' => $row->rt_page,
'rt_value' => null,
] )
->caller( __METHOD__ )
->execute();
}
}
/**
* Delete rows that have no banner ID associated with them
*/
private function deleteOrphans() {
$db = CNDatabase::getDb( DB_PRIMARY );
$this->output( "Preparing to delete orphaned rows\n" );
$res = $db->newSelectQueryBuilder()
->select( [ 'rt_page', 'rt_revision' ] )
->from( 'revtag' )
->where( [ 'rt_type' => $this->ttag, 'rt_value' => null ] )
->caller( __METHOD__ )
->fetchResultSet();
foreach ( $res as $row ) {
$this->output( " -- Deleting orphan row {$row->rt_page}:{$row->rt_revision}\n" );
$db->newDeleteQueryBuilder()
->deleteFrom( 'revtag' )
->where( [
'rt_type' => $this->ttag,
'rt_page' => $row->rt_page,
'rt_revision' => $row->rt_revision,
'rt_value' => null, // Just in case something updated it
] )
->caller( __METHOD__ )
->execute();
}
}
}
$maintClass = CleanCNTranslateMetadata::class;
require_once RUN_MAINTENANCE_IF_MAIN;

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CleanCNTranslateMetadata.php (3 KB)

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