https://www.mediawiki.org/wiki/Special:Code/MediaWiki/109224
Revision: 109224
Author: reedy
Date: 2012-01-17 21:57:05 +0000 (Tue, 17 Jan 2012)
Log Message:
-----------
refreshLinks in maintenance/ is in better shape
Removed Paths:
-------------
trunk/extensions/WikimediaMaintenance/rL.php
Deleted: trunk/extensions/WikimediaMaintenance/rL.php
===================================================================
--- trunk/extensions/WikimediaMaintenance/rL.php 2012-01-17 21:49:27 UTC
(rev 109223)
+++ trunk/extensions/WikimediaMaintenance/rL.php 2012-01-17 21:57:05 UTC
(rev 109224)
@@ -1,286 +0,0 @@
-<?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
- *
- * @ingroup Maintenance
- */
-
-require_once( dirname( __FILE__ ) . '/WikimediaMaintenance.php' );
-
-class RefreshLinks extends WikimediaMaintenance {
- public function __construct() {
- parent::__construct();
- $this->mDescription = "Refresh link tables";
- $this->addOption( 'dfn-only', 'Delete links from nonexistent
articles only' );
- $this->addOption( 'new-only', 'Only affect articles with just a
single edit' );
- $this->addOption( 'redirects-only', 'Only fix redirects, not
all links' );
- $this->addOption( 'old-redirects-only', 'Only fix redirects
with no redirect table entry' );
- $this->addOption( 'm', 'Maximum replication lag', false, true );
- $this->addOption( 'e', 'Last page id to refresh', false, true );
- $this->addArg( 'start', 'Page_id to start from, default 1',
false );
- $this->setBatchSize( 100 );
- }
-
- public function execute() {
- global $wgMemc;
- global $wgCacheEpoch;
- $wgCacheEpoch = '20100423090000';
- if( !$this->hasOption( 'dfn-only' ) ) {
- $start = $this->getArg( 0, 1 );
- $new = $this->getOption( 'new-only', false );
- $max = $this->getOption( 'm', false );
- $end = $this->getOption( 'e', 0 );
- $redir = $this->getOption( 'redirects-only', false );
- $oldRedir = $this->getOption( 'old-redirects-only',
false );
- $this->doRefreshLinks( $start, $new, $max, $end,
$redir, $oldRedir );
- }
- $this->deleteLinksFromNonexistent( $max, $this->mBatchSize );
- }
-
- /**
- * Do the actual link refreshing.
- * @param $start int Page_id to start from
- * @param $newOnly bool Only do pages with 1 edit
- * @param $maxLag int Max DB replication lag
- * @param $end int Page_id to stop at
- * @param $redirectsOnly bool Only fix redirects
- * @param $oldRedirectsOnly bool Only fix redirects without redirect
entries
- */
- private function doRefreshLinks( $start, $newOnly = false, $maxLag =
false,
- $end = 0, $redirectsOnly =
false, $oldRedirectsOnly = false ) {
- global $wgUser, $wgParser, $wgUseTidy;
-
- $reportingInterval = 100;
- $dbr = wfGetDB( DB_SLAVE );
- $start = intval( $start );
-
- # Don't generate TeX PNGs (lack of a sensible current directory
causes errors anyway)
- $wgUser->setOption('math', MW_MATH_SOURCE);
-
- # Don't generate extension images (e.g. Timeline)
- #if( method_exists( $wgParser, "clearTagHooks" ) ) {
- # $wgParser->clearTagHooks();
- #}
-
- # Don't use HTML tidy
- $wgUseTidy = false;
-
- $what = $redirectsOnly ? "redirects" : "links";
-
- if( $oldRedirectsOnly ) {
- # This entire code path is cut-and-pasted from below.
Hurrah.
- $res = $dbr->query(
- "SELECT page_id ".
- "FROM page ".
- "LEFT JOIN redirect ON page_id=rd_from ".
- "WHERE page_is_redirect=1 AND rd_from IS NULL
AND ".
- ($end == 0 ? "page_id >= $start"
- : "page_id BETWEEN $start
AND $end"),
- __METHOD__
- );
- $num = $dbr->numRows( $res );
- $this->output( "Refreshing $num old redirects from
$start...\n" );
-
- foreach( $res as $row ) {
- if ( !( ++$i % $reportingInterval ) ) {
- $this->output( "$i\n" );
- wfWaitForSlaves( $maxLag );
- }
- $this->fixRedirect( $row->page_id );
- }
- } elseif( $newOnly ) {
- $this->output( "Refreshing $what from " );
- $res = $dbr->select( 'page',
- array( 'page_id' ),
- array(
- 'page_is_new' => 1,
- "page_id >= $start" ),
- __METHOD__
- );
- $num = $dbr->numRows( $res );
- $this->output( "$num new articles...\n" );
-
- $i = 0;
- foreach ( $res as $row ) {
- if ( !( ++$i % $reportingInterval ) ) {
- $this->output( "$i\n" );
- wfWaitForSlaves( $maxLag );
- }
- if($redirectsOnly)
- $this->fixRedirect( $row->page_id );
- else
- $this->fixLinksFromArticle(
$row->page_id );
- }
- } else {
- if ( !$end ) {
- $maxPage = $dbr->selectField( 'page',
'max(page_id)', false );
- $maxRD = $dbr->selectField( 'redirect',
'max(rd_from)', false );
- $end = max( $maxPage, $maxRD );
- }
- $this->output( "Refreshing redirects table.\n" );
- $this->output( "Starting from page_id $start of
$end.\n" );
-
- for ($id = $start; $id <= $end; $id++) {
-
- if ( !($id % $reportingInterval) ) {
- $this->output( "$id\n" );
- wfWaitForSlaves( $maxLag );
- }
- $this->fixRedirect( $id );
- }
-
- if(!$redirectsOnly) {
- $this->output( "Refreshing links table.\n" );
- $this->output( "Starting from page_id $start of
$end.\n" );
-
- for ($id = $start; $id <= $end; $id++) {
-
- if ( !($id % $reportingInterval) ) {
- $this->output( "$id\n" );
- wfWaitForSlaves( $maxLag );
- }
- $this->fixLinksFromArticle( $id );
- }
- }
- }
- }
-
- /**
- * Update the redirect entry for a given page
- * @param $id int The page_id of the redirect
- */
- private function fixRedirect( $id ){
- global $wgTitle;
-
- $wgTitle = Title::newFromID( $id );
- $dbw = wfGetDB( DB_MASTER );
-
- if ( is_null( $wgTitle ) ) {
- // This page doesn't exist (any more)
- // Delete any redirect table entry for it
- $dbw->delete( 'redirect', array( 'rd_from' => $id ),
- __METHOD__ );
- return;
- }
- $article = new Article($wgTitle);
-
- $rt = $article->followRedirect();
-
- if($rt == false || !is_object($rt)) {
- // $wgTitle is not a redirect
- // Delete any redirect table entry for it
- $dbw->delete( 'redirect', array( 'rd_from' => $id ),
- __METHOD__ );
- } else {
- $article->updateRedirectOn($dbw,$rt);
- }
- }
-
- /**
- * Run LinksUpdate for all links on a given page_id
- * @param $id int The page_id
- */
- private function fixLinksFromArticle( $id ) {
- global $wgTitle, $wgParser;
-
- $wgTitle = Title::newFromID( $id );
- $dbw = wfGetDB( DB_MASTER );
-
- $linkCache =& LinkCache::singleton();
- $linkCache->clear();
-
- if ( is_null( $wgTitle ) ) {
- return;
- }
- $dbw->begin();
-
- $revision = Revision::newFromTitle( $wgTitle );
- if ( !$revision ) {
- return;
- }
-
- $options = new ParserOptions;
- $parserOutput = $wgParser->parse( $revision->getText(),
$wgTitle, $options, true, true, $revision->getId() );
- $update = new LinksUpdate( $wgTitle, $parserOutput, false );
- $update->doUpdate();
- $dbw->commit();
- }
-
- /**
- * Removes non-existing links from pages from pagelinks, imagelinks,
- * categorylinks, templatelinks and externallinks tables.
- *
- * @param $maxLag
- * @param $batchSize The size of deletion batches
- *
- * @author Merlijn van Deen <valhall...@arctus.nl>
- */
- private function deleteLinksFromNonexistent( $maxLag = 0, $batchSize =
100 ) {
- wfWaitForSlaves( $maxLag );
-
- $dbw = wfGetDB( DB_MASTER );
-
- $lb = wfGetLBFactory()->newMainLB();
- $dbr = $lb->getConnection( DB_SLAVE );
- $dbr->bufferResults( false );
-
- $linksTables = array( // table name => page_id field
- 'pagelinks' => 'pl_from',
- 'imagelinks' => 'il_from',
- 'categorylinks' => 'cl_from',
- 'templatelinks' => 'tl_from',
- 'externallinks' => 'el_from',
- );
-
- foreach ( $linksTables as $table => $field ) {
- $this->output( "Retrieving illegal entries from
$table... " );
-
- // SELECT DISTINCT( $field ) FROM $table LEFT JOIN page
ON $field=page_id WHERE page_id IS NULL;
- $results = $dbr->select( array( $table, 'page' ),
- $field,
- array('page_id' => null ),
- __METHOD__,
- 'DISTINCT',
- array( 'page' => array( 'LEFT
JOIN', "$field=page_id"))
- );
-
- $counter = 0;
- $list = array();
- $this->output( "0.." );
-
- foreach( $results as $row ) {
- $counter++;
- $list[] = $row->$field;
- if ( ( $counter % $batchSize ) == 0 ) {
- wfWaitForSlaves(5);
- $dbw->delete( $table, array( $field =>
$list ), __METHOD__ );
-
- $this->output( $counter . ".." );
- $list = array();
- }
- }
- $this->output( $counter );
- if (count($list) > 0) {
- $dbw->delete( $table, array( $field => $list ),
__METHOD__ );
- }
- $this->output( "\n" );
- }
- $lb->closeAll();
- }
-}
-
-$maintClass = 'RefreshLinks';
-require_once( DO_MAINTENANCE );
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