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<?php |
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namespace kalanis\kw_cache\Files; |
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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_files\Access\CompositeAdapter; |
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use kalanis\kw_files\FilesException; |
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use kalanis\kw_files\Traits\TToString; |
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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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/** |
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* Class Semaphore |
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* @package kalanis\kw_cache\Files |
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* Caching content by files - semaphore for detection |
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*/ |
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class Semaphore implements ICache |
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{ |
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use TToString; |
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/** @var CompositeAdapter */ |
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protected $lib = null; |
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/** @var ISemaphore */ |
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protected $reloadSemaphore = null; |
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/** @var string[] */ |
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protected $cachePath = [ICache::EXT_CACHE]; |
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public function __construct(CompositeAdapter $lib, ISemaphore $reloadSemaphore) |
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{ |
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$this->lib = $lib; |
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$this->reloadSemaphore = $reloadSemaphore; |
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} |
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public function init(string $what): void |
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{ |
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try { |
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$arr = new ArrayPath(); |
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$arr->setString($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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// @codeCoverageIgnoreStart |
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} catch (PathsException $ex) { |
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// just when it has problems with separating the path |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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// @codeCoverageIgnoreEnd |
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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 $this->lib->exists($this->cachePath) && !$this->reloadSemaphore->has(); |
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} catch (SemaphoreException | FilesException | 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 $content): bool |
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{ |
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try { |
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$result = $this->lib->saveFile($this->cachePath, $content); |
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if (false === $result) { |
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return false; |
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} |
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// remove signal to save |
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if ($this->reloadSemaphore->has()) { |
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$this->reloadSemaphore->remove(); |
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} |
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} catch (SemaphoreException | FilesException | 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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return $this->exists() |
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? $this->toString(Stuff::arrayToPath($this->cachePath), $this->lib->readFile($this->cachePath)) |
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: '' |
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; |
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} catch (FilesException | PathsException $ex) { |
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throw new CacheException($ex->getMessage(), $ex->getCode(), $ex); |
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} |
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} |
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public function clear(): void |
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{ |
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try { |
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$this->lib->deleteFile($this->cachePath); |
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} catch (FilesException | 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
