7bfebad308
Follow up r48544. Init ParserOptions::mIsPrintable in initialiseFromUser() Move the "No edit section it's printable" from Parser to Article. This leaves getIsPrintable() unused. Left there for extensions (none seems to be using it, could be removed). The "even if the user has them on" comment wasn't accurate. The user preference only controls them via CSS. Anyway, it would work as expected now if it got moved into ParserOptions. The setEditSection() no longer set it to true. Remove the quickUserCan( 'edit' ) which is just a hidden way of calling $wgUser from the Parser to be explicitely done in Article to disable the editsection. This results in quickUserCan being called once instead of twice if $wgUseETag == true;.
126 lines
3.4 KiB
PHP
126 lines
3.4 KiB
PHP
<?php
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/**
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* @ingroup Cache Parser
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* @todo document
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*/
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class ParserCache {
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private $mMemc;
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/**
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* Get an instance of this object
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*/
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public static function singleton() {
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static $instance;
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if ( !isset( $instance ) ) {
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global $parserMemc;
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$instance = new ParserCache( $parserMemc );
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}
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return $instance;
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}
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/**
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* Setup a cache pathway with a given back-end storage mechanism.
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* May be a memcached client or a BagOStuff derivative.
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*
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* @param $memCached Object
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*/
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function __construct( $memCached ) {
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if ( !$memCached ) {
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global $parserMemc;
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$parserMemc = $memCached = wfGetParserCacheStorage();
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}
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$this->mMemc = $memCached;
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}
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function getKey( $article, $popts ) {
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global $wgRequest;
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if( $popts instanceof User ) // It used to be getKey( &$article, &$user )
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$popts = ParserOptions::newFromUser( $popts );
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$user = $popts->mUser;
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$printable = ( $popts->getIsPrintable() ) ? '!printable=1' : '';
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$hash = $user->getPageRenderingHash();
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if( ! $popts->getEditSection() ) {
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// section edit links have been suppressed
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$edit = '!edit=0';
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} else {
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$edit = '';
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}
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$pageid = $article->getID();
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$renderkey = (int)($wgRequest->getVal('action') == 'render');
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$key = wfMemcKey( 'pcache', 'idhash', "{$pageid}-{$renderkey}!{$hash}{$edit}{$printable}" );
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return $key;
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}
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function getETag( $article, $popts ) {
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return 'W/"' . $this->getKey($article, $popts) . "--" . $article->mTouched. '"';
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}
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function getDirty( $article, $popts ) {
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$key = $this->getKey( $article, $popts );
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wfDebug( "Trying parser cache $key\n" );
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$value = $this->mMemc->get( $key );
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return is_object( $value ) ? $value : false;
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}
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function get( $article, $popts ) {
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global $wgCacheEpoch;
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wfProfileIn( __METHOD__ );
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$value = $this->getDirty( $article, $popts );
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if ( !$value ) {
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wfDebug( "Parser cache miss.\n" );
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wfIncrStats( "pcache_miss_absent" );
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wfProfileOut( __METHOD__ );
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return false;
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}
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wfDebug( "Found.\n" );
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# Invalid if article has changed since the cache was made
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$canCache = $article->checkTouched();
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$cacheTime = $value->getCacheTime();
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$touched = $article->mTouched;
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if ( !$canCache || $value->expired( $touched ) ) {
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if ( !$canCache ) {
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wfIncrStats( "pcache_miss_invalid" );
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wfDebug( "Invalid cached redirect, touched $touched, epoch $wgCacheEpoch, cached $cacheTime\n" );
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} else {
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wfIncrStats( "pcache_miss_expired" );
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wfDebug( "Key expired, touched $touched, epoch $wgCacheEpoch, cached $cacheTime\n" );
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}
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$value = false;
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} else {
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if ( isset( $value->mTimestamp ) ) {
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$article->mTimestamp = $value->mTimestamp;
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}
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wfIncrStats( "pcache_hit" );
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}
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wfProfileOut( __METHOD__ );
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return $value;
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}
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function save( $parserOutput, $article, $popts ){
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$key = $this->getKey( $article, $popts );
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$expire = $parserOutput->getCacheExpiry();
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if( $expire > 0 ) {
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$now = wfTimestampNow();
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$parserOutput->setCacheTime( $now );
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// Save the timestamp so that we don't have to load the revision row on view
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$parserOutput->mTimestamp = $article->getTimestamp();
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$parserOutput->mText .= "\n<!-- Saved in parser cache with key $key and timestamp $now -->\n";
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wfDebug( "Saved in parser cache with key $key and timestamp $now\n" );
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$this->mMemc->set( $key, $parserOutput, $expire );
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} else {
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wfDebug( "Parser output was marked as uncacheable and has not been saved.\n" );
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}
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}
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}
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