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+<?php
+/**
+ * HTML cache invalidation of all pages linking to a given title.
+ *
+ * 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
+ * @ingroup Cache
+ */
+
+/**
+ * Class to invalidate the HTML cache of all the pages linking to a given title.
+ *
+ * @ingroup Cache
+ */
+class HTMLCacheUpdate implements DeferrableUpdate {
+ /** @var Title */
+ public $mTitle;
+
+ /** @var string */
+ public $mTable;
+
+ /**
+ * @param Title $titleTo
+ * @param string $table
+ */
+ function __construct( Title $titleTo, $table ) {
+ $this->mTitle = $titleTo;
+ $this->mTable = $table;
+ }
+
+ public function doUpdate() {
+ wfProfileIn( __METHOD__ );
+
+ $job = new HTMLCacheUpdateJob(
+ $this->mTitle,
+ array(
+ 'table' => $this->mTable,
+ ) + Job::newRootJobParams( // "overall" refresh links job info
+ "htmlCacheUpdate:{$this->mTable}:{$this->mTitle->getPrefixedText()}"
+ )
+ );
+
+ $count = $this->mTitle->getBacklinkCache()->getNumLinks( $this->mTable, 100 );
+ if ( $count >= 100 ) { // many backlinks
+ JobQueueGroup::singleton()->push( $job );
+ JobQueueGroup::singleton()->deduplicateRootJob( $job );
+ } else { // few backlinks ($count might be off even if 0)
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->onTransactionIdle( function () use ( $job ) {
+ $job->run(); // just do the purge query now
+ } );
+ }
+
+ wfProfileOut( __METHOD__ );
+ }
+}