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<?php namespace Comodojo\Cache\Drivers; |
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use \Exception; |
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/** |
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* @package Comodojo Cache |
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* @author Marco Giovinazzi <[email protected]> |
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* @license MIT |
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* |
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* LICENSE: |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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class FilesystemXattr extends AbstractDriver { |
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const DRIVER_NAME = "filesystem-xattr"; |
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/** |
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* Cache (files) repository |
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* |
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* @param string |
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*/ |
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protected $cache_folder; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __construct(array $configuration) { |
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$this->cache_folder = $configuration['cache-folder']; |
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if ( $this->test() === false ) throw new Exception("Folder ".$this->cache_folder." not writable"); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function test() { |
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return file_exists($this->cache_folder) && is_writable($this->cache_folder); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function get($key, $namespace) { |
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if ( $this->has($key, $namespace) ) { |
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$cacheFile = $this->cache_folder."$key-$namespace.cache"; |
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$data = @file_get_contents($cacheFile); |
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if ( $data === false ) throw new Exception("Error reading cache content $cacheFile"); |
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return $data; |
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} |
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return null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function set($key, $namespace, $value, $ttl = null) { |
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$cacheFile = $this->cache_folder."$key-$namespace.cache"; |
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if ( $ttl == null || $ttl == 0 ) { |
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$ttl = 0; |
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} else { |
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$ttl = time() + intval($ttl); |
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} |
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$cached = @file_put_contents($cacheFile, $value, LOCK_EX); |
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if ( $cached === false ) throw new Exception("Error writing cache object $cacheFile"); |
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$tagged = @xattr_set($cacheFile, "EXPIRE", $ttl, XATTR_DONTFOLLOW); |
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if ( $tagged === false ) throw new Exception("Error writing cache ttl $cacheFile"); |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function delete($key, $namespace) { |
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$cacheFile = $this->cache_folder."$key-$namespace.cache"; |
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if ( file_exists($cacheFile) ) { |
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$u = unlink($cacheFile); |
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return $u; |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function clear($namespace = null) { |
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$result = []; |
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if ( $namespace === null ) { |
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$file_list = glob($this->cache_folder."*.cache"); |
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} else { |
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$file_list = glob($this->cache_folder."*-$namespace.cache"); |
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} |
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if ( empty($file_list) ) return true; |
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foreach ( $file_list as $file ) $result[] = unlink($file); |
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return !in_array(false, $result); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getMultiple(array $keys, $namespace) { |
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$result = []; |
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foreach ( $keys as $key ) { |
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$result[$key] = $this->get($key, $namespace); |
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} |
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return $result; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setMultiple(array $key_values, $namespace, $ttl = null) { |
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$result = []; |
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foreach ( $key_values as $key => $value ) { |
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$result[] = $this->set($key, $namespace, $value, $ttl); |
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} |
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return !in_array(false, $result); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function deleteMultiple(array $keys, $namespace) { |
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$result = []; |
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foreach ( $keys as $key ) { |
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$result[] = $this->delete($key, $namespace); |
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} |
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return !in_array(false, $result); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function has($key, $namespace) { |
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$time = time(); |
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$cacheFile = $this->cache_folder."$key-$namespace.cache"; |
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if ( file_exists($cacheFile) ) { |
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$expire = xattr_get($cacheFile, "EXPIRE", XATTR_DONTFOLLOW); |
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if ( $expire === false ) { |
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throw new Exception("Error reading cache ttl for $cacheFile"); |
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} else if ( $expire < $time && $expire != 0 ) { |
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$this->delete($key, $namespace); |
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return false; |
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} else { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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2 |
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public function stats() { |
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return ['objects' => count(glob($this->cache_folder."*.cache"))]; |
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} |
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} |
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comodojo /
cache
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