forked from Cyber/archwiki
119 lines
3.7 KiB
PHP
119 lines
3.7 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Maintenance
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*/
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require_once __DIR__ . '/Maintenance.php';
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use MediaWiki\MediaWikiServices;
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/**
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* @ingroup Maintenance
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*/
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class CompareParserCache extends Maintenance {
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public function __construct() {
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parent::__construct();
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$this->addDescription( 'Parse random pages and compare output to cache.' );
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$this->addOption( 'namespace', 'Page namespace number', true, true );
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$this->addOption( 'maxpages', 'Number of pages to try', true, true );
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}
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public function execute() {
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$pages = $this->getOption( 'maxpages' );
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$dbr = $this->getDB( DB_REPLICA );
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$totalsec = 0.0;
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$scanned = 0;
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$withcache = 0;
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$withdiff = 0;
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$services = MediaWikiServices::getInstance();
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$parserCache = $services->getParserCache();
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$renderer = $services->getRevisionRenderer();
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$wikiPageFactory = $services->getWikiPageFactory();
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while ( $pages-- > 0 ) {
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$row = $dbr->selectRow( 'page',
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// @todo Title::selectFields() or Title::getQueryInfo() or something
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[
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'page_namespace', 'page_title', 'page_id',
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'page_len', 'page_is_redirect', 'page_latest',
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],
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[
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'page_namespace' => $this->getOption( 'namespace' ),
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'page_is_redirect' => 0,
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'page_random >= ' . wfRandom()
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],
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__METHOD__,
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[
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'ORDER BY' => 'page_random',
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]
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);
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if ( !$row ) {
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continue;
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}
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++$scanned;
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$title = Title::newFromRow( $row );
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$page = $wikiPageFactory->newFromTitle( $title );
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$revision = $page->getRevisionRecord();
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$parserOptions = $page->makeParserOptions( 'canonical' );
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$parserOutputOld = $parserCache->get( $page, $parserOptions );
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if ( $parserOutputOld ) {
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$t1 = microtime( true );
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$parserOutputNew = $renderer->getRenderedRevision( $revision, $parserOptions )
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->getRevisionParserOutput();
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$sec = microtime( true ) - $t1;
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$totalsec += $sec;
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$this->output( "Parsed '{$title->getPrefixedText()}' in $sec seconds.\n" );
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$this->output( "Found cache entry found for '{$title->getPrefixedText()}'..." );
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$oldHtml = trim( preg_replace( '#<!-- .+-->#Us', '', $parserOutputOld->getText() ) );
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$newHtml = trim( preg_replace( '#<!-- .+-->#Us', '', $parserOutputNew->getText() ) );
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$diffs = new Diff( explode( "\n", $oldHtml ), explode( "\n", $newHtml ) );
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$formatter = new UnifiedDiffFormatter();
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$unifiedDiff = $formatter->format( $diffs );
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if ( strlen( $unifiedDiff ) ) {
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$this->output( "differences found:\n\n$unifiedDiff\n\n" );
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++$withdiff;
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} else {
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$this->output( "No differences found.\n" );
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}
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++$withcache;
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} else {
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$this->output( "No parser cache entry found for '{$title->getPrefixedText()}'.\n" );
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}
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}
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$ave = $totalsec ? $totalsec / $scanned : 0;
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$this->output( "Checked $scanned pages; $withcache had prior cache entries.\n" );
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$this->output( "Pages with differences found: $withdiff\n" );
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$this->output( "Average parse time: $ave sec\n" );
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}
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}
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$maintClass = CompareParserCache::class;
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require_once RUN_MAINTENANCE_IF_MAIN;
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