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<?php |
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/* |
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* This file is part of the Koded package. |
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* |
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* (c) Mihail Binev <[email protected]> |
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* |
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* Please view the LICENSE distributed with this source code |
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* for the full copyright and license information. |
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* |
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*/ |
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namespace Koded\Caching\Client; |
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use Koded\Caching\{Cache, CacheException}; |
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use Psr\Log\LoggerInterface; |
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use function Koded\Caching\verify_key; |
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use function Koded\Stdlib\rmdir; |
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/** |
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* @property FileClient client |
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* |
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*/ |
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final class FileClient implements Cache |
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{ |
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use ClientTrait, MultiplesTrait; |
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/** @var string */ |
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private $dir = ''; |
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/** @var LoggerInterface */ |
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private $logger; |
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public function __construct(LoggerInterface $logger, string $dir, int $ttl = null) |
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{ |
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$this->ttl = $ttl; |
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$this->logger = $logger; |
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$this->setDirectory($dir); |
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} |
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public function get($key, $default = null) |
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{ |
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try { |
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if ($this->has($key, $filename, $cache)) { |
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return unserialize($cache['value']); |
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} |
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return $default; |
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} finally { |
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unset($filename, $cache); |
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} |
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} |
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public function set($key, $value, $ttl = null) |
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{ |
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verify_key($key); |
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if (1 > $expiration = $this->timestampWithGlobalTtl($ttl, Cache::DATE_FAR_FAR_AWAY)) { |
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// The item is considered expired and must be deleted |
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return $this->delete($key); |
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} |
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$filename = $this->filename($key, true); |
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return (bool)file_put_contents($filename, $this->data($key, $value, $expiration)); |
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} |
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public function delete($key) |
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{ |
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if (false === $this->has($key, $filename)) { |
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return true; |
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} |
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return unlink($filename); |
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} |
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public function clear() |
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{ |
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return rmdir($this->dir); |
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} |
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public function has($key, &$filename = '', &$cache = null) |
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{ |
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verify_key($key); |
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$filename = $this->filename($key, false); |
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if (false === is_file($filename)) { |
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return false; |
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} |
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/** @noinspection PhpIncludeInspection */ |
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$cache = include $filename; |
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if ($cache['timestamp'] <= time()) { |
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unlink($filename); |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Normalizes the cache filename. |
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* |
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* @param string $key The cache key |
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* @param bool $create Flag to create the file or not |
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* |
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* @return string |
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*/ |
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private function filename(string $key, bool $create): string |
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{ |
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$filename = sha1($key); |
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$dir = $this->dir . $filename[0]; |
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if ($create && false === is_dir($dir)) { |
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mkdir($dir, 0775, true) |
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|| $this->logger->error('Failed to create cache directory in: {dir}', ['dir' => $dir]); |
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} |
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$filename = $dir . '/' . substr($filename, 1) . '.php'; |
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if ($create && false === is_file($filename)) { |
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touch($filename); |
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chmod($filename, 0666); |
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} |
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return $filename; |
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} |
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/** |
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* Prepares the cache directory. |
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* |
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* @param string $directory |
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* |
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* @throws CacheException |
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*/ |
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private function setDirectory(string $directory): void |
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{ |
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// Overrule shell misconfiguration or the web server |
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umask(umask() | 0002); |
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$dir = $directory ?: sys_get_temp_dir() . '/_cache'; |
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$dir = rtrim($dir, '/') . '/'; |
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if (false === is_dir($dir) && false === mkdir($dir, 0775, true)) { |
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$e = CacheException::forCreatingDirectory($dir); |
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$this->logger->error($e->getMessage()); |
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throw $e; |
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} |
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$this->dir = $dir; |
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} |
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/** |
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* Creates a cache content. |
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* |
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* @param string $key The cache key |
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* @param mixed $value The value to be cached |
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* @param int|null $ttl Time to live |
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* |
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* @return string |
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*/ |
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private function data(string $key, $value, int $ttl): string |
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{ |
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return '<?php return ' . var_export([ |
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'timestamp' => $ttl, |
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'key' => $key, |
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'value' => serialize($value), |
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], true) . ';'; |
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} |
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} |
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kodedphp /
cache-simple
