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<?php |
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/** |
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* Created by jensk on 25-10-2017. |
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*/ |
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namespace CloudControl\Cms\storage; |
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use CloudControl\Cms\components\CmsComponent; |
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class Cache |
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{ |
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/** |
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* @var Cache |
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*/ |
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private static $instance; |
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/** |
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* @var string |
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*/ |
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protected $storagePath; |
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/** |
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* @var \PDO |
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*/ |
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protected $dbHandle; |
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private function __construct() |
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{ |
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// Singleton, so private constructor |
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} |
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/** |
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* @return Cache |
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*/ |
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public static function getInstance() |
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{ |
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if (!self::$instance instanceof Cache) { |
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self::$instance = new Cache(); |
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} |
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return self::$instance; |
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} |
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/** |
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* @param $path |
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* @return \stdClass |
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*/ |
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public function getCacheForPath($path) |
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{ |
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$dbInstace = $this->getDbInstance(); |
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$sql = ' |
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SELECT * |
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FROM `cache` |
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WHERE `path` = :path |
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LIMIT 1 |
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'; |
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$stmt = $dbInstace->prepare($sql); |
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$stmt->bindParam(':path', $path); |
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if ($stmt->execute()) { |
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return $stmt->fetch(\PDO::FETCH_OBJ); |
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} else { |
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$error = $stmt->errorInfo(); |
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$errorMsg = $error[2]; |
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throw new \RuntimeException('SQLite Exception: ' . $errorMsg . ' in SQL: <br /><pre>' . $sql . '</pre>'); |
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} |
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} |
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/** |
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* Clears all cache |
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*/ |
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public function clearCache() |
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{ |
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$dbInstace = $this->getDbInstance(); |
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$sql = ' |
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DELETE FROM `cache`; |
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VACUUM; |
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'; |
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$stmt = $dbInstace->prepare($sql); |
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if ($stmt->execute()) { |
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return; |
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} else { |
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$error = $stmt->errorInfo(); |
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$errorMsg = $error[2]; |
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throw new \RuntimeException('SQLite Exception: ' . $errorMsg . ' in SQL: <br /><pre>' . $sql . '</pre>'); |
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} |
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} |
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/** |
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* @param $storagePath |
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*/ |
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public function setStoragePath($storagePath) |
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{ |
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$this->storagePath = $storagePath; |
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} |
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/** |
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* @return \PDO |
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*/ |
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private function getDbInstance() |
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{ |
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if ($this->dbHandle === null) { |
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$this->dbHandle = new \PDO('sqlite:' . $this->storagePath . DIRECTORY_SEPARATOR . 'cache.db'); |
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} |
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return $this->dbHandle; |
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} |
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/** |
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* @param $baseCacheSqlPath |
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*/ |
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public function init($baseCacheSqlPath) |
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{ |
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$realBaseCacheSqlPath = realpath($baseCacheSqlPath); |
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$db = $this->getDbInstance(); |
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$sql = file_get_contents($realBaseCacheSqlPath); |
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$db->exec($sql); |
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} |
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/** |
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* @param $requestUri |
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* @param $renderedContent |
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*/ |
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public function setCacheForPath($requestUri, $renderedContent) |
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{ |
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$dbInstace = $this->getDbInstance(); |
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$sql = ' |
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INSERT OR REPLACE INTO `cache` (path, creationStamp, contents) |
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VALUES (:path, :creationStamp, :contents); |
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'; |
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$contents = \sanitize_output($renderedContent); |
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$creationStamp = time(); |
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$stmt = $dbInstace->prepare($sql); |
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$stmt->bindParam(':path', $requestUri); |
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$stmt->bindParam(':creationStamp', $creationStamp); |
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$stmt->bindParam(':contents', $contents); |
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if ($stmt->execute()) { |
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return; |
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} else { |
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$error = $stmt->errorInfo(); |
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$errorMsg = $error[2]; |
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throw new \RuntimeException('SQLite Exception: ' . $errorMsg . ' in SQL: <br /><pre>' . $sql . '</pre>'); |
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} |
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} |
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} |
jenskooij /
cloudcontrol
