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<?php |
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/** |
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* File containing the ContentHandler implementation. |
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* |
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* @copyright Copyright (C) eZ Systems AS. All rights reserved. |
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* @license For full copyright and license information view LICENSE file distributed with this source code. |
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*/ |
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namespace eZ\Publish\Core\Persistence\Cache; |
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use eZ\Publish\SPI\Persistence\Handler as PersistenceHandler; |
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use Symfony\Component\Cache\Adapter\TagAwareAdapterInterface; |
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/** |
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* Class AbstractHandler. |
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* |
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* Abstract handler for use in other Persistence Cache Handlers. |
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*/ |
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abstract class AbstractHandler |
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{ |
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/** |
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* @var \Symfony\Component\Cache\Adapter\TagAwareAdapterInterface |
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*/ |
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protected $cache; |
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/** |
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* @var \eZ\Publish\SPI\Persistence\Handler |
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*/ |
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protected $persistenceHandler; |
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/** |
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* @var \eZ\Publish\Core\Persistence\Cache\PersistenceLogger |
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*/ |
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protected $logger; |
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/** |
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* Setups current handler with everything needed. |
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* |
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* @param \Symfony\Component\Cache\Adapter\TagAwareAdapterInterface $cache |
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* @param \eZ\Publish\SPI\Persistence\Handler $persistenceHandler |
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* @param \eZ\Publish\Core\Persistence\Cache\PersistenceLogger $logger |
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*/ |
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public function __construct( |
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TagAwareAdapterInterface $cache, |
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PersistenceHandler $persistenceHandler, |
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PersistenceLogger $logger |
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) { |
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$this->cache = $cache; |
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$this->persistenceHandler = $persistenceHandler; |
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$this->logger = $logger; |
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} |
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/** |
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* Helper for getting multiple cache items in one call and do the id extraction for you. |
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* |
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* Cache items must be stored with a key in the following format "${keyPrefix}${id}", like "ez-content-info-${id}", |
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* in order for this method to be able to prefix key on id's and also extract key prefix afterwards. |
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* |
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* It also optionally supports a key suffix, for use on a variable argument that affects all lookups, |
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* like translations, i.e. "ez-content-${id}-${translationKey}" where $keySuffix = "-${translationKey}". |
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* |
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* @param array $ids |
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* @param string $keyPrefix E.g "ez-content-" |
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* @param callable $missingLoader Function for loading missing objects, gets array with missing id's as argument, |
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* expects return value to be array with id as key. Missing items should be missing. |
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* @param callable $loadedTagger Function for tagging loaded object, gets object as argument, return array of tags. |
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* @param array $keySuffixes Optional, key is id as provided in $ids, and value is a key suffix e.g. "-eng-Gb" |
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* |
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* @return array |
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*/ |
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final protected function getMultipleCacheItems( |
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array $ids, |
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string $keyPrefix, |
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callable $missingLoader, |
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callable $loadedTagger, |
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array $keySuffixes = [] |
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): array { |
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if (empty($ids)) { |
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return []; |
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} |
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// Generate unique cache keys |
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$cacheKeys = []; |
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foreach (array_unique($ids) as $id) { |
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$cacheKeys[] = $keyPrefix . $id . ($keySuffixes[$id] ?? ''); |
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} |
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// Load cache items by cache keys (will contain hits and misses) |
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$list = []; |
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$cacheMisses = []; |
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$keyPrefixLength = strlen($keyPrefix); |
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foreach ($this->cache->getItems($cacheKeys) as $key => $cacheItem) { |
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$id = substr($key, $keyPrefixLength); |
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if (!empty($keySuffixes)) { |
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$id = explode('-', $id, 2)[0]; |
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} |
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if ($cacheItem->isHit()) { |
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$list[$id] = $cacheItem->get(); |
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} else { |
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$cacheMisses[] = $id; |
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$list[$id] = $cacheItem; |
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} |
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} |
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// No misses, return completely cached list |
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if (empty($cacheMisses)) { |
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return $list; |
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} |
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// Load missing items, save to cache & apply to list if found |
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$loadedList = $missingLoader($cacheMisses); |
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foreach ($cacheMisses as $id) { |
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if (isset($loadedList[$id])) { |
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$this->cache->save( |
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$list[$id] |
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->set($loadedList[$id]) |
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->tag($loadedTagger($loadedList[$id])) |
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); |
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$list[$id] = $loadedList[$id]; |
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} else { |
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unset($list[$id]); |
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} |
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} |
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return $list; |
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} |
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} |
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ezsystems /
ezpublish-kernel
