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<?php |
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namespace kalanis\kw_cache\Storage; |
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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_paths\ArrayPath; |
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use kalanis\kw_paths\PathsException; |
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use kalanis\kw_paths\Stuff; |
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use kalanis\kw_semaphore\Interfaces\ISemaphore; |
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use kalanis\kw_semaphore\SemaphoreException; |
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use kalanis\kw_storage\Interfaces\IStorage; |
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use kalanis\kw_storage\StorageException; |
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/** |
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* Class Semaphore |
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* @package kalanis\kw_cache\Storage |
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* Caching content in storage - semaphore for detection |
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*/ |
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class Semaphore implements ICache |
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{ |
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protected IStorage $storage; |
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protected ISemaphore $reloadSemaphore; |
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/** @var string[] */ |
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protected array $cachePath = [ICache::EXT_CACHE]; |
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public function __construct(IStorage $cacheStorage, ISemaphore $reloadSemaphore) |
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{ |
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$this->storage = $cacheStorage; |
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$this->reloadSemaphore = $reloadSemaphore; |
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} |
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public function init(array $what): void |
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{ |
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$arr = new ArrayPath(); |
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$arr->setArray($what); |
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$this->cachePath = array_merge( |
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$arr->getArrayDirectory(), |
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[$arr->getFileName() . ICache::EXT_CACHE] |
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); |
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} |
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public function exists(): bool |
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{ |
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try { |
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$cachePath = Stuff::arrayToPath($this->cachePath); |
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return $this->storage->exists($cachePath) && !$this->reloadSemaphore->has(); |
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} catch (SemaphoreException | StorageException | PathsException $ex) { |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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} |
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public function set(string $content): bool |
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{ |
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try { |
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$cachePath = Stuff::arrayToPath($this->cachePath); |
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$result = $this->storage->write($cachePath, $content, null); |
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if (false === $result) { |
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return false; |
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} |
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// remove signal to save |
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if ($this->reloadSemaphore->has()) { |
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$this->reloadSemaphore->remove(); |
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} |
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} catch (SemaphoreException | StorageException | PathsException $ex) { |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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return true; |
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} |
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public function get(): string |
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{ |
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try { |
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$cachePath = Stuff::arrayToPath($this->cachePath); |
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return $this->exists() ? strval($this->storage->read($cachePath)) : ''; |
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} catch (StorageException | PathsException $ex) { |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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} |
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public function clear(): void |
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{ |
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try { |
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$cachePath = Stuff::arrayToPath($this->cachePath); |
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$this->storage->remove($cachePath); |
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} catch (StorageException | PathsException $ex) { |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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} |
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} |
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alex-kalanis /
kw_cache
