1 files changed, 94 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Api/Browse/CachingLookup.php b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Api/Browse/CachingLookup.php
new file mode 100644
index 00000000..923ef6b0
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Api/Browse/CachingLookup.php
@@ -0,0 +1,94 @@
+<?php
+
+namespace SMW\MediaWiki\Api\Browse;
+
+use Onoi\Cache\Cache;
+use SMW\Utils\Timer;
+
+/**
+ * @license GNU GPL v2+
+ * @since 3.0
+ *
+ * @author mwjames
+ */
+class CachingLookup {
+
+	const CACHE_NAMESPACE = 'smw:api:browse';
+	const CACHE_TTL = 3600;
+
+	/**
+	 * @var Store
+	 */
+	private $store;
+
+	/**
+	 * @var Lookup
+	 */
+	private $lookup;
+
+	/**
+	 * @var integer|boolean
+	 */
+	private $cacheTTL;
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param Cache $cache
+	 * @param Lookup $lookup
+	 */
+	public function __construct( Cache $cache, Lookup $lookup ) {
+		$this->cache = $cache;
+		$this->lookup = $lookup;
+		$this->cacheTTL = self::CACHE_TTL;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param integer|boolean $cacheTTL
+	 */
+	public function setCacheTTL( $cacheTTL ) {
+		$this->cacheTTL = $cacheTTL;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param array $parameters
+	 *
+	 * @return array
+	 */
+	public function lookup( array $parameters ) {
+
+		Timer::start( __METHOD__ );
+
+		$hash = smwfCacheKey(
+			self::CACHE_NAMESPACE,
+			[
+				$parameters,
+				$this->lookup->getVersion()
+			]
+		);
+
+		if ( $this->cacheTTL !== false && ( $res = $this->cache->fetch( $hash ) ) !== false ) {
+			$res['meta']['isFromCache'] = true;
+			$res['meta']['queryTime'] = Timer::getElapsedTime( __METHOD__, 5 );
+			return $res;
+		}
+
+		$res = $this->lookup->lookup(
+			$parameters
+		);
+
+		if ( $this->cacheTTL !== false ) {
+			$this->cache->save( $hash, $res, $this->cacheTTL );
+		}
+
+		$res['meta']['isFromCache'] = false;
+		$res['meta']['queryTime'] = Timer::getElapsedTime( __METHOD__, 5 );
+
+		return $res;
+	}
+
+}