165 lines
3.9 KiB
PHP
165 lines
3.9 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Cache\Traits;
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use Psr\Cache\CacheItemInterface;
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use Symfony\Component\Cache\CacheItem;
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use Symfony\Component\Cache\Exception\InvalidArgumentException;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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trait AbstractAdapterTrait
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{
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use AbstractTrait;
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/**
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* @var \Closure needs to be set by class, signature is function(string <key>, mixed <value>, bool <isHit>)
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*/
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private $createCacheItem;
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/**
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* @var \Closure needs to be set by class, signature is function(array <deferred>, string <namespace>, array <&expiredIds>)
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*/
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private $mergeByLifetime;
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/**
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* {@inheritdoc}
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*/
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public function getItem($key)
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{
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$id = $this->getId($key);
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if (isset($this->deferred[$key])) {
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$this->commit();
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}
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$f = $this->createCacheItem;
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$isHit = false;
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$value = null;
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try {
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foreach ($this->doFetch([$id]) as $value) {
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$isHit = true;
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}
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return $f($key, $value, $isHit);
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} catch (\Exception $e) {
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CacheItem::log($this->logger, 'Failed to fetch key "{key}": '.$e->getMessage(), ['key' => $key, 'exception' => $e]);
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}
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return $f($key, null, false);
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}
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/**
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* {@inheritdoc}
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*/
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public function getItems(array $keys = [])
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{
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$ids = [];
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$commit = false;
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foreach ($keys as $key) {
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$ids[] = $this->getId($key);
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$commit = $commit || isset($this->deferred[$key]);
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}
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if ($commit) {
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$this->commit();
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}
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try {
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$items = $this->doFetch($ids);
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} catch (\Exception $e) {
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CacheItem::log($this->logger, 'Failed to fetch items: '.$e->getMessage(), ['keys' => $keys, 'exception' => $e]);
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$items = [];
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}
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$ids = array_combine($ids, $keys);
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return $this->generateItems($items, $ids);
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}
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/**
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* {@inheritdoc}
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*
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* @return bool
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*/
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public function save(CacheItemInterface $item)
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{
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if (!$item instanceof CacheItem) {
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return false;
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}
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$this->deferred[$item->getKey()] = $item;
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return $this->commit();
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}
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/**
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* {@inheritdoc}
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*
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* @return bool
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*/
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public function saveDeferred(CacheItemInterface $item)
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{
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if (!$item instanceof CacheItem) {
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return false;
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}
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$this->deferred[$item->getKey()] = $item;
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return true;
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}
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/**
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* @return array
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*/
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public function __sleep()
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{
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throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
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}
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public function __wakeup()
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{
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throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
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}
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public function __destruct()
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{
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if ($this->deferred) {
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$this->commit();
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}
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}
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private function generateItems(iterable $items, array &$keys): iterable
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{
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$f = $this->createCacheItem;
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try {
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foreach ($items as $id => $value) {
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if (!isset($keys[$id])) {
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throw new InvalidArgumentException(sprintf('Could not match value id "%s" to keys "%s".', $id, implode('", "', $keys)));
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}
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$key = $keys[$id];
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unset($keys[$id]);
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yield $key => $f($key, $value, true);
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}
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} catch (\Exception $e) {
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CacheItem::log($this->logger, 'Failed to fetch items: '.$e->getMessage(), ['keys' => array_values($keys), 'exception' => $e]);
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}
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foreach ($keys as $key) {
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yield $key => $f($key, null, false);
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}
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}
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}
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