155 lines
3.8 KiB
PHP
155 lines
3.8 KiB
PHP
<?php
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/**
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*
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* This file is part of phpFastCache.
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*
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* @license MIT License (MIT)
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*
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* For full copyright and license information, please see the docs/CREDITS.txt file.
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*
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* @author Lucas Brucksch <support@hammermaps.de>
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*
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*/
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namespace phpFastCache\Drivers\Zendshm;
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use phpFastCache\Core\Pool\DriverBaseTrait;
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use phpFastCache\Core\Pool\ExtendedCacheItemPoolInterface;
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use phpFastCache\Entities\DriverStatistic;
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use phpFastCache\Exceptions\phpFastCacheDriverCheckException;
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use phpFastCache\Exceptions\phpFastCacheDriverException;
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use phpFastCache\Exceptions\phpFastCacheInvalidArgumentException;
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use Psr\Cache\CacheItemInterface;
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/**
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* Class Driver (zend memory cache)
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* Requires Zend Data Cache Functions from ZendServer
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* @package phpFastCache\Drivers
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*/
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class Driver implements ExtendedCacheItemPoolInterface
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{
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use DriverBaseTrait;
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/**
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* Driver constructor.
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* @param array $config
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* @throws phpFastCacheDriverException
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*/
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public function __construct(array $config = [])
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{
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$this->setup($config);
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if (!$this->driverCheck()) {
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throw new phpFastCacheDriverCheckException(sprintf(self::DRIVER_CHECK_FAILURE, $this->getDriverName()));
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}
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}
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/**
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* @return bool
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*/
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public function driverCheck()
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{
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if (extension_loaded('Zend Data Cache') && function_exists('zend_shm_cache_store')) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* @param \Psr\Cache\CacheItemInterface $item
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* @return mixed
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* @throws phpFastCacheInvalidArgumentException
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*/
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protected function driverWrite(CacheItemInterface $item)
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{
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/**
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* Check for Cross-Driver type confusion
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*/
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if ($item instanceof Item) {
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$ttl = $item->getExpirationDate()->getTimestamp() - time();
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return zend_shm_cache_store($item->getKey(), $this->driverPreWrap($item), ($ttl > 0 ? $ttl : 0));
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} else {
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throw new phpFastCacheInvalidArgumentException('Cross-Driver type confusion detected');
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}
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}
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/**
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* @param \Psr\Cache\CacheItemInterface $item
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* @return null|array
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*/
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protected function driverRead(CacheItemInterface $item)
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{
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$data = zend_shm_cache_fetch($item->getKey());
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if ($data === false) {
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return null;
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}
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return $data;
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}
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/**
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* @param \Psr\Cache\CacheItemInterface $item
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* @return bool
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* @throws phpFastCacheInvalidArgumentException
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*/
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protected function driverDelete(CacheItemInterface $item)
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{
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/**
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* Check for Cross-Driver type confusion
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*/
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if ($item instanceof Item) {
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return zend_shm_cache_delete($item->getKey());
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} else {
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throw new phpFastCacheInvalidArgumentException('Cross-Driver type confusion detected');
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}
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}
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/**
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* @return bool
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*/
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protected function driverClear()
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{
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return @zend_shm_cache_clear();
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}
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/**
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* @return bool
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*/
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protected function driverConnect()
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{
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return true;
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}
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/********************
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*
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* PSR-6 Extended Methods
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*
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*******************/
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/**
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* @return string
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*/
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public function getHelp()
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{
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return <<<HELP
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<p>
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This driver rely on Zend Server 8.5+, see: http://www.zend.com/en/products/zend_server
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</p>
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HELP;
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}
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/**
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* @return DriverStatistic
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*/
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public function getStats()
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{
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$stats = (array)zend_shm_cache_info();
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return (new DriverStatistic())
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->setData(implode(', ', array_keys($this->itemInstances)))
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->setInfo(sprintf("The Zend memory have %d item(s) in cache.\n For more information see RawData.", $stats[ 'items_total' ]))
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->setRawData($stats)
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->setSize($stats[ 'memory_total' ]);
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}
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} |