* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ class CachedConfigurationLoader implements ConfigurationLoaderInterface { const CACHE_FILE_PATTERN = '/cached-config-%s.php'; /** * @var string */ private $cacheDir; /** * @var string */ private $cacheIdentifier; /** * @var \Closure */ private $configurationLoaderBuilder; /** * @var string */ private $cacheFileName; /** * CachedConfigurationLoader constructor. * * @param string $cacheDir * @param string $cacheIdentifier * @param \Closure $configurationLoaderBuilder */ public function __construct(string $cacheDir, string $cacheIdentifier, \Closure $configurationLoaderBuilder) { $this->cacheDir = $cacheDir; $this->cacheIdentifier = $cacheIdentifier; $this->configurationLoaderBuilder = $configurationLoaderBuilder; $this->cacheFileName = $this->cacheDir . sprintf(self::CACHE_FILE_PATTERN, $this->cacheIdentifier); } public function load(): array { if ($this->hasCache()) { return $this->loadCache(); } /** @var ConfigurationLoader $configurationLoader */ $configurationLoader = ($this->configurationLoaderBuilder)(); $finalConfiguration = $configurationLoader->load(); if (!empty($this->cacheIdentifier)) { $this->cleanCache(); $this->storeCache($finalConfiguration); } return $finalConfiguration; } protected function hasCache(): bool { return file_exists($this->cacheFileName); } private function loadCache(): array { return include $this->cacheFileName; } private function storeCache(array $finalConfiguration) { $configString = var_export($finalConfiguration, true); $content = <<cacheFileName, $content); } private function cleanCache() { foreach (glob($this->getCacheFileGlob()) as $file) { @unlink($file); } } private function getCacheFileGlob(): string { return $this->cacheDir . sprintf(self::CACHE_FILE_PATTERN, '*'); } }