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Drivers
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File: Driver.php
<?php /** * * This file is part of phpFastCache. * * @license MIT License (MIT) * * For full copyright and license information, please see the docs/CREDITS.txt file. * * @author Khoa Bui (khoaofgod) <khoaofgod@gmail.com> https://www.phpfastcache.com * @author Georges.L (Geolim4) <contact@geolim4.com> * */ declare(strict_types=1); namespace Phpfastcache\Drivers\Memcached; use Memcached as MemcachedSoftware; use Phpfastcache\Config\ConfigurationOption; use Phpfastcache\Core\Pool\{ DriverBaseTrait, ExtendedCacheItemPoolInterface }; use Phpfastcache\Entities\DriverStatistic; use Phpfastcache\Exceptions\{ PhpfastcacheDriverException, PhpfastcacheInvalidArgumentException }; use Phpfastcache\Util\{ MemcacheDriverCollisionDetectorTrait }; use Psr\Cache\CacheItemInterface; /** * Class Driver * @package phpFastCache\Drivers * @property MemcachedSoftware $instance * @property Config $config Config object * @method Config getConfig() Return the config object */ class Driver implements ExtendedCacheItemPoolInterface { use DriverBaseTrait { __construct as protected __parentConstruct; } use MemcacheDriverCollisionDetectorTrait; /** * Driver constructor. * @param ConfigurationOption $config * @param string $instanceId * @throws PhpfastcacheDriverException */ public function __construct(ConfigurationOption $config, string $instanceId) { self::checkCollision('Memcached'); $this->__parentConstruct($config, $instanceId); } /** * @return bool */ public function driverCheck(): bool { return \class_exists('Memcached'); } /** * @return bool */ protected function driverConnect(): bool { $this->instance = new MemcachedSoftware(); $this->instance->setOption(\Memcached::OPT_BINARY_PROTOCOL, true); $servers = $this->getConfig()->getServers(); if (\count($servers) < 1) { $servers = [ [ 'host' => $this->getConfig()->getHost(), 'path' => $this->getConfig()->getPath(), 'port' => $this->getConfig()->getPort(), 'saslUser' => $this->getConfig()->getSaslUser() ?: false, 'saslPassword' => $this->getConfig()->getSaslPassword() ?: false, ], ]; } foreach ($servers as $server) { try { /** * If path is provided we consider it as an UNIX Socket */ if (!empty($server['path']) && !$this->instance->addServer($server['path'], 0)) { $this->fallback = true; } else { if (!empty($server['host']) && !$this->instance->addServer($server['host'], $server['port'])) { $this->fallback = true; } } if (!empty($server['saslUser']) && !empty($server['saslPassword'])) { $this->instance->setSaslAuthData($server['saslUser'], $server['saslPassword']); } } catch (\Exception $e) { $this->fallback = true; } } /** * Since Memcached does not throw * any error if not connected ... */ $version = $this->instance->getVersion(); if (!$version || $this->instance->getResultCode() !== MemcachedSoftware::RES_SUCCESS) { throw new PhpfastcacheDriverException('Memcached seems to not be connected'); } return true; } /** * @param \Psr\Cache\CacheItemInterface $item * @return null|array */ protected function driverRead(CacheItemInterface $item) { $val = $this->instance->get($item->getKey()); if ($val === false) { return null; } return $val; } /** * @param \Psr\Cache\CacheItemInterface $item * @return bool * @throws PhpfastcacheInvalidArgumentException */ protected function driverWrite(CacheItemInterface $item): bool { /** * Check for Cross-Driver type confusion */ if ($item instanceof Item) { $ttl = $item->getExpirationDate()->getTimestamp() - \time(); // Memcache will only allow a expiration timer less than 2592000 seconds, // otherwise, it will assume you're giving it a UNIX timestamp. if ($ttl > 2592000) { $ttl = \time() + $ttl; } return $this->instance->set($item->getKey(), $this->driverPreWrap($item), $ttl); } throw new PhpfastcacheInvalidArgumentException('Cross-Driver type confusion detected'); } /** * @param \Psr\Cache\CacheItemInterface $item * @return bool * @throws PhpfastcacheInvalidArgumentException */ protected function driverDelete(CacheItemInterface $item): bool { /** * Check for Cross-Driver type confusion */ if ($item instanceof Item) { return $this->instance->delete($item->getKey()); } throw new PhpfastcacheInvalidArgumentException('Cross-Driver type confusion detected'); } /** * @return bool */ protected function driverClear(): bool { return $this->instance->flush(); } /******************** * * PSR-6 Extended Methods * *******************/ /** * @return DriverStatistic */ public function getStats(): DriverStatistic { $stats = current($this->instance->getStats()); $stats['uptime'] = (isset($stats['uptime']) ? $stats['uptime'] : 0); $stats['version'] = (isset($stats['version']) ? $stats['version'] : $this->instance->getVersion()); $stats['bytes'] = (isset($stats['bytes']) ? $stats['version'] : 0); $date = (new \DateTime())->setTimestamp(\time() - $stats['uptime']); return (new DriverStatistic()) ->setData(\implode(', ', \array_keys($this->itemInstances))) ->setInfo(\sprintf("The memcache daemon v%s is up since %s.\n For more information see RawData.", $stats['version'], $date->format(\DATE_RFC2822))) ->setRawData($stats) ->setSize((int)$stats['bytes']); } }