X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2Fcache%2FLinkCache.php;h=23cc26d5e23bb3cb6842ada788dfac3f2001e7d1;hb=d5a7166771613dfe4ed9fb75fa5efeced6134bd1;hp=6a602dfb2f5cacb12e15676170336bc0266f157c;hpb=7e350ba150404509d764c96a5ea4dbc9aa51d3ac;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/cache/LinkCache.php b/includes/cache/LinkCache.php
index 6a602dfb2f..2d088952b6 100644
--- a/includes/cache/LinkCache.php
+++ b/includes/cache/LinkCache.php
@@ -20,6 +20,9 @@
  * @file
  * @ingroup Cache
  */
+
+use Wikimedia\Rdbms\Database;
+use Wikimedia\Rdbms\IDatabase;
 use MediaWiki\Linker\LinkTarget;
 use MediaWiki\MediaWikiServices;
 
@@ -29,19 +32,17 @@ use MediaWiki\MediaWikiServices;
  * @ingroup Cache
  */
 class LinkCache {
-	/**
-	 * @var HashBagOStuff
-	 */
+	/** @var HashBagOStuff */
 	private $mGoodLinks;
-	/**
-	 * @var HashBagOStuff
-	 */
+	/** @var HashBagOStuff */
 	private $mBadLinks;
+	/** @var WANObjectCache */
+	private $wanCache;
+
+	/** @var bool */
 	private $mForUpdate = false;
 
-	/**
-	 * @var TitleFormatter
-	 */
+	/** @var TitleFormatter */
 	private $titleFormatter;
 
 	/**
@@ -50,9 +51,10 @@ class LinkCache {
 	 */
 	const MAX_SIZE = 10000;
 
-	public function __construct( TitleFormatter $titleFormatter ) {
+	public function __construct( TitleFormatter $titleFormatter, WANObjectCache $cache ) {
 		$this->mGoodLinks = new HashBagOStuff( [ 'maxKeys' => self::MAX_SIZE ] );
 		$this->mBadLinks = new HashBagOStuff( [ 'maxKeys' => self::MAX_SIZE ] );
+		$this->wanCache = $cache;
 		$this->titleFormatter = $titleFormatter;
 	}
 
@@ -244,15 +246,31 @@ class LinkCache {
 			return 0;
 		}
 
-		// Some fields heavily used for linking...
-		$db = $this->mForUpdate ? wfGetDB( DB_MASTER ) : wfGetDB( DB_REPLICA );
+		// Cache template/file pages as they are less often viewed but heavily used
+		if ( $this->mForUpdate ) {
+			$row = $this->fetchPageRow( wfGetDB( DB_MASTER ), $nt );
+		} elseif ( $this->isCacheable( $nt ) ) {
+			// These pages are often transcluded heavily, so cache them
+			$cache = $this->wanCache;
+			$row = $cache->getWithSetCallback(
+				$cache->makeKey( 'page', $nt->getNamespace(), sha1( $nt->getDBkey() ) ),
+				$cache::TTL_DAY,
+				function ( $curValue, &$ttl, array &$setOpts ) use ( $cache, $nt ) {
+					$dbr = wfGetDB( DB_REPLICA );
+					$setOpts += Database::getCacheSetOptions( $dbr );
 
-		$row = $db->selectRow( 'page', self::getSelectFields(),
-			[ 'page_namespace' => $nt->getNamespace(), 'page_title' => $nt->getDBkey() ],
-			__METHOD__
-		);
+					$row = $this->fetchPageRow( $dbr, $nt );
+					$mtime = $row ? wfTimestamp( TS_UNIX, $row->page_touched ) : false;
+					$ttl = $cache->adaptiveTTL( $mtime, $ttl );
 
-		if ( $row !== false ) {
+					return $row;
+				}
+			);
+		} else {
+			$row = $this->fetchPageRow( wfGetDB( DB_REPLICA ), $nt );
+		}
+
+		if ( $row ) {
 			$this->addGoodLinkObjFromRow( $nt, $row );
 			$id = intval( $row->page_id );
 		} else {
@@ -263,6 +281,53 @@ class LinkCache {
 		return $id;
 	}
 
+	/**
+	 * @param WANObjectCache $cache
+	 * @param TitleValue $t
+	 * @return string[]
+	 * @since 1.28
+	 */
+	public function getMutableCacheKeys( WANObjectCache $cache, TitleValue $t ) {
+		if ( $this->isCacheable( $t ) ) {
+			return [ $cache->makeKey( 'page', $t->getNamespace(), sha1( $t->getDBkey() ) ) ];
+		}
+
+		return [];
+	}
+
+	private function isCacheable( LinkTarget $title ) {
+		return ( $title->inNamespace( NS_TEMPLATE ) || $title->inNamespace( NS_FILE ) );
+	}
+
+	private function fetchPageRow( IDatabase $db, LinkTarget $nt ) {
+		$fields = self::getSelectFields();
+		if ( $this->isCacheable( $nt ) ) {
+			$fields[] = 'page_touched';
+		}
+
+		return $db->selectRow(
+			'page',
+			$fields,
+			[ 'page_namespace' => $nt->getNamespace(), 'page_title' => $nt->getDBkey() ],
+			__METHOD__
+		);
+	}
+
+	/**
+	 * Purge the link cache for a title
+	 *
+	 * @param LinkTarget $title
+	 * @since 1.28
+	 */
+	public function invalidateTitle( LinkTarget $title ) {
+		if ( $this->isCacheable( $title ) ) {
+			$cache = ObjectCache::getMainWANInstance();
+			$cache->delete(
+				$cache->makeKey( 'page', $title->getNamespace(), sha1( $title->getDBkey() ) )
+			);
+		}
+	}
+
 	/**
 	 * Clears cache
 	 */