--- /dev/null
+<?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
+ *
+ * @file
+ */
+use MediaWiki\MediaWikiServices;
+
+class PoolWorkArticleView extends PoolCounterWork {
+ /** @var WikiPage */
+ private $page;
+
+ /** @var string */
+ private $cacheKey;
+
+ /** @var int */
+ private $revid;
+
+ /** @var ParserCache */
+ private $parserCache;
+
+ /** @var ParserOptions */
+ private $parserOptions;
+
+ /** @var Content|null */
+ private $content = null;
+
+ /** @var ParserOutput|bool */
+ private $parserOutput = false;
+
+ /** @var bool */
+ private $isDirty = false;
+
+ /** @var Status|bool */
+ private $error = false;
+
+ /**
+ * @param WikiPage $page
+ * @param ParserOptions $parserOptions ParserOptions to use for the parse
+ * @param int $revid ID of the revision being parsed.
+ * @param bool $useParserCache Whether to use the parser cache.
+ * operation.
+ * @param Content|string $content Content to parse or null to load it; may
+ * also be given as a wikitext string, for BC.
+ */
+ public function __construct( WikiPage $page, ParserOptions $parserOptions,
+ $revid, $useParserCache, $content = null
+ ) {
+ if ( is_string( $content ) ) { // BC: old style call
+ $modelId = $page->getRevision()->getContentModel();
+ $format = $page->getRevision()->getContentFormat();
+ $content = ContentHandler::makeContent( $content, $page->getTitle(), $modelId, $format );
+ }
+
+ $this->page = $page;
+ $this->revid = $revid;
+ $this->cacheable = $useParserCache;
+ $this->parserOptions = $parserOptions;
+ $this->content = $content;
+ $this->parserCache = MediaWikiServices::getInstance()->getParserCache();
+ $this->cacheKey = $this->parserCache->getKey( $page, $parserOptions );
+ $keyPrefix = $this->cacheKey ?: wfMemcKey( 'articleview', 'missingcachekey' );
+ parent::__construct( 'ArticleView', $keyPrefix . ':revid:' . $revid );
+ }
+
+ /**
+ * Get the ParserOutput from this object, or false in case of failure
+ *
+ * @return ParserOutput
+ */
+ public function getParserOutput() {
+ return $this->parserOutput;
+ }
+
+ /**
+ * Get whether the ParserOutput is a dirty one (i.e. expired)
+ *
+ * @return bool
+ */
+ public function getIsDirty() {
+ return $this->isDirty;
+ }
+
+ /**
+ * Get a Status object in case of error or false otherwise
+ *
+ * @return Status|bool
+ */
+ public function getError() {
+ return $this->error;
+ }
+
+ /**
+ * @return bool
+ */
+ public function doWork() {
+ global $wgUseFileCache;
+
+ // @todo several of the methods called on $this->page are not declared in Page, but present
+ // in WikiPage and delegated by Article.
+
+ $isCurrent = $this->revid === $this->page->getLatest();
+
+ if ( $this->content !== null ) {
+ $content = $this->content;
+ } elseif ( $isCurrent ) {
+ // XXX: why use RAW audience here, and PUBLIC (default) below?
+ $content = $this->page->getContent( Revision::RAW );
+ } else {
+ $rev = Revision::newFromTitle( $this->page->getTitle(), $this->revid );
+
+ if ( $rev === null ) {
+ $content = null;
+ } else {
+ // XXX: why use PUBLIC audience here (default), and RAW above?
+ $content = $rev->getContent();
+ }
+ }
+
+ if ( $content === null ) {
+ return false;
+ }
+
+ // Reduce effects of race conditions for slow parses (T48014)
+ $cacheTime = wfTimestampNow();
+
+ $time = - microtime( true );
+ $this->parserOutput = $content->getParserOutput(
+ $this->page->getTitle(),
+ $this->revid,
+ $this->parserOptions
+ );
+ $time += microtime( true );
+
+ // Timing hack
+ if ( $time > 3 ) {
+ // TODO: Use Parser's logger (once it has one)
+ $logger = MediaWiki\Logger\LoggerFactory::getInstance( 'slow-parse' );
+ $logger->info( '{time} {title}', [
+ 'time' => number_format( $time, 2 ),
+ 'title' => $this->page->getTitle()->getPrefixedDBkey(),
+ 'ns' => $this->page->getTitle()->getNamespace(),
+ 'trigger' => 'view',
+ ] );
+ }
+
+ if ( $this->cacheable && $this->parserOutput->isCacheable() && $isCurrent ) {
+ $this->parserCache->save(
+ $this->parserOutput, $this->page, $this->parserOptions, $cacheTime, $this->revid );
+ }
+
+ // Make sure file cache is not used on uncacheable content.
+ // Output that has magic words in it can still use the parser cache
+ // (if enabled), though it will generally expire sooner.
+ if ( !$this->parserOutput->isCacheable() ) {
+ $wgUseFileCache = false;
+ }
+
+ if ( $isCurrent ) {
+ $this->page->triggerOpportunisticLinksUpdate( $this->parserOutput );
+ }
+
+ return true;
+ }
+
+ /**
+ * @return bool
+ */
+ public function getCachedWork() {
+ $this->parserOutput = $this->parserCache->get( $this->page, $this->parserOptions );
+
+ if ( $this->parserOutput === false ) {
+ wfDebug( __METHOD__ . ": parser cache miss\n" );
+ return false;
+ } else {
+ wfDebug( __METHOD__ . ": parser cache hit\n" );
+ return true;
+ }
+ }
+
+ /**
+ * @return bool
+ */
+ public function fallback() {
+ $this->parserOutput = $this->parserCache->getDirty( $this->page, $this->parserOptions );
+
+ if ( $this->parserOutput === false ) {
+ wfDebugLog( 'dirty', 'dirty missing' );
+ wfDebug( __METHOD__ . ": no dirty cache\n" );
+ return false;
+ } else {
+ wfDebug( __METHOD__ . ": sending dirty output\n" );
+ wfDebugLog( 'dirty', "dirty output {$this->cacheKey}" );
+ $this->isDirty = true;
+ return true;
+ }
+ }
+
+ /**
+ * @param Status $status
+ * @return bool
+ */
+ public function error( $status ) {
+ $this->error = $status;
+ return false;
+ }
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff