diff options
Diffstat (limited to 'srcs/phpmyadmin/vendor/symfony/cache/Simple/ChainCache.php')
| -rw-r--r-- | srcs/phpmyadmin/vendor/symfony/cache/Simple/ChainCache.php | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/srcs/phpmyadmin/vendor/symfony/cache/Simple/ChainCache.php b/srcs/phpmyadmin/vendor/symfony/cache/Simple/ChainCache.php new file mode 100644 index 0000000..57a169f --- /dev/null +++ b/srcs/phpmyadmin/vendor/symfony/cache/Simple/ChainCache.php @@ -0,0 +1,271 @@ +<?php + +/* + * This file is part of the Symfony package. + * + * (c) Fabien Potencier <fabien@symfony.com> + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + */ + +namespace Symfony\Component\Cache\Simple; + +use Psr\SimpleCache\CacheInterface as Psr16CacheInterface; +use Symfony\Component\Cache\Adapter\ChainAdapter; +use Symfony\Component\Cache\Exception\InvalidArgumentException; +use Symfony\Component\Cache\PruneableInterface; +use Symfony\Component\Cache\ResettableInterface; +use Symfony\Contracts\Cache\CacheInterface; +use Symfony\Contracts\Service\ResetInterface; + +@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.3, use "%s" and type-hint for "%s" instead.', ChainCache::class, ChainAdapter::class, CacheInterface::class), E_USER_DEPRECATED); + +/** + * Chains several caches together. + * + * Cached items are fetched from the first cache having them in its data store. + * They are saved and deleted in all caches at once. + * + * @deprecated since Symfony 4.3, use ChainAdapter and type-hint for CacheInterface instead. + */ +class ChainCache implements Psr16CacheInterface, PruneableInterface, ResettableInterface +{ + private $miss; + private $caches = []; + private $defaultLifetime; + private $cacheCount; + + /** + * @param Psr16CacheInterface[] $caches The ordered list of caches used to fetch cached items + * @param int $defaultLifetime The lifetime of items propagated from lower caches to upper ones + */ + public function __construct(array $caches, int $defaultLifetime = 0) + { + if (!$caches) { + throw new InvalidArgumentException('At least one cache must be specified.'); + } + + foreach ($caches as $cache) { + if (!$cache instanceof Psr16CacheInterface) { + throw new InvalidArgumentException(sprintf('The class "%s" does not implement the "%s" interface.', \get_class($cache), Psr16CacheInterface::class)); + } + } + + $this->miss = new \stdClass(); + $this->caches = array_values($caches); + $this->cacheCount = \count($this->caches); + $this->defaultLifetime = 0 < $defaultLifetime ? $defaultLifetime : null; + } + + /** + * {@inheritdoc} + */ + public function get($key, $default = null) + { + $miss = null !== $default && \is_object($default) ? $default : $this->miss; + + foreach ($this->caches as $i => $cache) { + $value = $cache->get($key, $miss); + + if ($miss !== $value) { + while (0 <= --$i) { + $this->caches[$i]->set($key, $value, $this->defaultLifetime); + } + + return $value; + } + } + + return $default; + } + + /** + * {@inheritdoc} + * + * @return iterable + */ + public function getMultiple($keys, $default = null) + { + $miss = null !== $default && \is_object($default) ? $default : $this->miss; + + return $this->generateItems($this->caches[0]->getMultiple($keys, $miss), 0, $miss, $default); + } + + private function generateItems(iterable $values, int $cacheIndex, $miss, $default): iterable + { + $missing = []; + $nextCacheIndex = $cacheIndex + 1; + $nextCache = isset($this->caches[$nextCacheIndex]) ? $this->caches[$nextCacheIndex] : null; + + foreach ($values as $k => $value) { + if ($miss !== $value) { + yield $k => $value; + } elseif (!$nextCache) { + yield $k => $default; + } else { + $missing[] = $k; + } + } + + if ($missing) { + $cache = $this->caches[$cacheIndex]; + $values = $this->generateItems($nextCache->getMultiple($missing, $miss), $nextCacheIndex, $miss, $default); + + foreach ($values as $k => $value) { + if ($miss !== $value) { + $cache->set($k, $value, $this->defaultLifetime); + yield $k => $value; + } else { + yield $k => $default; + } + } + } + } + + /** + * {@inheritdoc} + * + * @return bool + */ + public function has($key) + { + foreach ($this->caches as $cache) { + if ($cache->has($key)) { + return true; + } + } + + return false; + } + + /** + * {@inheritdoc} + * + * @return bool + */ + public function clear() + { + $cleared = true; + $i = $this->cacheCount; + + while ($i--) { + $cleared = $this->caches[$i]->clear() && $cleared; + } + + return $cleared; + } + + /** + * {@inheritdoc} + * + * @return bool + */ + public function delete($key) + { + $deleted = true; + $i = $this->cacheCount; + + while ($i--) { + $deleted = $this->caches[$i]->delete($key) && $deleted; + } + + return $deleted; + } + + /** + * {@inheritdoc} + * + * @return bool + */ + public function deleteMultiple($keys) + { + if ($keys instanceof \Traversable) { + $keys = iterator_to_array($keys, false); + } + $deleted = true; + $i = $this->cacheCount; + + while ($i--) { + $deleted = $this->caches[$i]->deleteMultiple($keys) && $deleted; + } + + return $deleted; + } + + /** + * {@inheritdoc} + * + * @return bool + */ + public function set($key, $value, $ttl = null) + { + $saved = true; + $i = $this->cacheCount; + + while ($i--) { + $saved = $this->caches[$i]->set($key, $value, $ttl) && $saved; + } + + return $saved; + } + + /** + * {@inheritdoc} + * + * @return bool + */ + public function setMultiple($values, $ttl = null) + { + if ($values instanceof \Traversable) { + $valuesIterator = $values; + $values = function () use ($valuesIterator, &$values) { + $generatedValues = []; + + foreach ($valuesIterator as $key => $value) { + yield $key => $value; + $generatedValues[$key] = $value; + } + + $values = $generatedValues; + }; + $values = $values(); + } + $saved = true; + $i = $this->cacheCount; + + while ($i--) { + $saved = $this->caches[$i]->setMultiple($values, $ttl) && $saved; + } + + return $saved; + } + + /** + * {@inheritdoc} + */ + public function prune() + { + $pruned = true; + + foreach ($this->caches as $cache) { + if ($cache instanceof PruneableInterface) { + $pruned = $cache->prune() && $pruned; + } + } + + return $pruned; + } + + /** + * {@inheritdoc} + */ + public function reset() + { + foreach ($this->caches as $cache) { + if ($cache instanceof ResetInterface) { + $cache->reset(); + } + } + } +} |