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<?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;
}
}
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