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<?php |
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namespace kalanis\kw_cache\Cache; |
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use kalanis\kw_cache\CacheException; |
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use kalanis\kw_cache\Interfaces\ICache; |
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use kalanis\kw_semaphore\Interfaces\ISemaphore; |
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use kalanis\kw_semaphore\SemaphoreException; |
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/** |
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* Class Semaphore |
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* @package kalanis\kw_cache\Cache |
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* Caching content in any cache - semaphore for detection |
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*/ |
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class Semaphore implements ICache |
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{ |
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protected ICache $cache; |
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protected ISemaphore $reloadSemaphore; |
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public function __construct(ICache $cache, ISemaphore $reloadSemaphore) |
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{ |
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$this->cache = $cache; |
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$this->reloadSemaphore = $reloadSemaphore; |
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} |
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public function init(array $what): void |
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{ |
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$this->cache->init($what); |
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} |
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public function exists(): bool |
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{ |
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try { |
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return $this->cache->exists() && !$this->reloadSemaphore->has(); |
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} catch (SemaphoreException $ex) { |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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} |
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public function set(string $content): bool |
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{ |
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$result = $this->cache->set($content); |
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if (false === $result) { |
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return false; |
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} |
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// remove signal to save |
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try { |
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if ($this->reloadSemaphore->has()) { |
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$this->reloadSemaphore->remove(); |
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} |
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} catch (SemaphoreException $ex) { |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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return true; |
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} |
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public function get(): string |
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{ |
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return $this->exists() ? $this->cache->get() : '' ; |
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} |
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public function clear(): void |
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{ |
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$this->cache->clear(); |
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} |
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} |
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alex-kalanis /
kw_cache
