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<?php |
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/* |
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* This file is part of the Shieldon Simple Cache package. |
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* |
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* (c) Terry L. <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Shieldon\SimpleCache\Driver; |
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use Shieldon\SimpleCache\CacheProvider; |
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use PDO; |
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use function file_put_contents; |
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use function rtrim; |
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/** |
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* A cache driver class provided by SQLite database. |
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*/ |
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class Sqlite extends CacheProvider |
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{ |
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use SqlTrait; |
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protected $type = 'sqlite'; |
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/** |
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* The absolute path of the storage's directory. |
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* It must be writable. |
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* |
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* @var string |
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*/ |
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protected $storage = '/tmp/simple-cache'; |
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/** |
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* Constructor. |
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* |
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* @param array $setting The settings. |
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* |
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* @throws CacheException |
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*/ |
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public function __construct(array $setting = []) |
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{ |
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if (isset($setting['storage'])) { |
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$this->storage = rtrim($setting['storage'], '/'); |
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} |
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$this->assertDirectoryWritable($this->storage); |
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$this->db = new PDO('sqlite:' . $this->storage . '/cache.sqlite3'); |
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} |
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/** |
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* Is SQLite database existed? |
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* |
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* @return bool |
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*/ |
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protected function isSQLiteFileExisted(): bool |
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{ |
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return file_exists($this->storage . '/cache.sqlite3'); |
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} |
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/** |
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* Delete all caches by an extended Cache Driver. |
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* |
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* @return bool |
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*/ |
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protected function doClear(): bool |
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{ |
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$sql = 'DELETE FROM ' . $this->table; |
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$query = $this->db->prepare($sql); |
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$result = $query->execute(); |
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return $result; |
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} |
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/** |
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* Rebuild the cache storage. |
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* |
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* @return bool |
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*/ |
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public function rebuild(): bool |
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{ |
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if (!$this->isSQLiteFileExisted()) { |
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return false; |
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} |
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try { |
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$sql = "CREATE TABLE IF NOT EXISTS {$this->table} ( |
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cache_key VARCHAR(40) PRIMARY KEY, |
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cache_value LONGTEXT |
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);"; |
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$this->db->query($sql); |
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// @codeCoverageIgnoreStart |
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} catch (Exception $e) { |
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file_put_contents('php://stderr', $e->getMessage()); |
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return false; |
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} |
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// @codeCoverageIgnoreEnd |
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return true; |
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} |
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} |
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terrylinooo /
simple-cache
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