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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Cache; |
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use Psr\SimpleCache\CacheInterface as PsrSimpleCacheInterface; |
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use Yiisoft\Cache\Metadata\CacheItem; |
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use function is_array; |
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/** |
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* Cache provides support for the data caching, including dependencies. |
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* The actual data caching is performed via {@see DependencyAwareCache::handler()}. |
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*/ |
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final class DependencyAwareCache implements PsrSimpleCacheInterface |
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{ |
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/** |
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* @var CacheInterface The actual cache. |
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*/ |
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private CacheInterface $cache; |
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/** |
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* @var PsrSimpleCacheInterface The actual cache handler. |
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*/ |
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private PsrSimpleCacheInterface $handler; |
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/** |
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* @param CacheInterface $cache The actual cache handler. |
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* @param PsrSimpleCacheInterface $handler The actual cache handler. |
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*/ |
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public function __construct(CacheInterface $cache, PsrSimpleCacheInterface $handler) |
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{ |
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$this->cache = $cache; |
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$this->handler = $handler; |
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} |
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public function get($key, $default = null) |
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{ |
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$value = $this->handler->get($key, $default); |
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return $this->checkAndGetValue($key, $value, $default); |
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} |
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public function set($key, $value, $ttl = null): bool |
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{ |
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return $this->handler->set($key, $value, $ttl); |
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} |
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public function delete($key): bool |
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{ |
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return $this->handler->delete($key); |
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} |
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public function clear(): bool |
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{ |
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return $this->handler->clear(); |
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} |
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public function getMultiple($keys, $default = null): iterable |
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{ |
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$values = []; |
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foreach ($this->handler->getMultiple($keys, $default) as $key => $value) { |
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$values[$key] = $this->checkAndGetValue($key, $value, $default); |
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} |
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return $values; |
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} |
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public function setMultiple($values, $ttl = null): bool |
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{ |
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return $this->handler->setMultiple($values, $ttl); |
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} |
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public function deleteMultiple($keys): bool |
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{ |
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return $this->handler->deleteMultiple($keys); |
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} |
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public function has($key): bool |
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{ |
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return $this->get($key) !== null; |
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} |
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/** |
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* Checks if the cache dependency has expired and returns a value |
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* |
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* @param string $key The unique key of this item in the cache. |
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* @param mixed $value The value of this item in the cache. |
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* @param mixed $default Default value to return if the key does not exist. |
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* |
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* @return mixed|null The cache value or `null` if the cache is outdated or a dependency has been changed. |
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*/ |
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private function checkAndGetValue(string $key, $value, $default = null) |
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{ |
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if (is_array($value) && isset($value[1]) && $value[1] instanceof CacheItem) { |
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[$value, $item] = $value; |
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$dependency = $item->dependency(); |
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if ($item->key() !== $key || ($dependency !== null && $dependency->isChanged($this->cache))) { |
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return $default; |
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} |
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} |
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return $value; |
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} |
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} |
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yiisoft /
cache
