Wruczek 1ffaee0730 v 1.4.0
- Updated local libraries
- PHP 7.1 support
- New, proper caching method
- Special cache folder
2017-01-29 22:56:17 +01:00

161 lines
4.4 KiB
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> http://www.phpfastcache.com
* @author Georges.L (Geolim4) <contact@geolim4.com>
*
*/
namespace phpFastCache\Drivers\Predis;
use phpFastCache\Core\DriverAbstract;
use phpFastCache\Core\StandardPsr6StructureTrait;
use phpFastCache\Entities\driverStatistic;
use phpFastCache\Exceptions\phpFastCacheDriverCheckException;
use phpFastCache\Exceptions\phpFastCacheDriverException;
use Predis\Client as PredisClient;
use Psr\Cache\CacheItemInterface;
/**
* Class Driver
* @package phpFastCache\Drivers
*/
class Driver extends DriverAbstract
{
/**
* @var PredisClient Instance of driver service
*/
public $instance;
/**
* Driver constructor.
* @param array $config
* @throws phpFastCacheDriverException
*/
public function __construct(array $config = [])
{
$this->setup($config);
if (!$this->driverCheck()) {
throw new phpFastCacheDriverCheckException(sprintf(self::DRIVER_CHECK_FAILURE, $this->getDriverName()));
} else {
$this->driverConnect();
}
}
/**
* @return bool
*/
public function driverCheck()
{
if (extension_loaded('Redis')) {
trigger_error('The native Redis extension is installed, you should use Redis instead of Predis to increase performances', E_USER_NOTICE);
}
return class_exists('Predis\Client');
}
/**
* @param \Psr\Cache\CacheItemInterface $item
* @return mixed
* @throws \InvalidArgumentException
*/
protected function driverWrite(CacheItemInterface $item)
{
/**
* Check for Cross-Driver type confusion
*/
if ($item instanceof Item) {
$ttl = $item->getExpirationDate()->getTimestamp() - time();
return $this->instance->setex($item->getKey(), $ttl, $this->encode($this->driverPreWrap($item)));
} else {
throw new \InvalidArgumentException('Cross-Driver type confusion detected');
}
}
/**
* @param \Psr\Cache\CacheItemInterface $item
* @return mixed
*/
protected function driverRead(CacheItemInterface $item)
{
$val = $this->instance->get($item->getKey());
if ($val == false) {
return null;
} else {
return $this->decode($val);
}
}
/**
* @param \Psr\Cache\CacheItemInterface $item
* @return bool
* @throws \InvalidArgumentException
*/
protected function driverDelete(CacheItemInterface $item)
{
/**
* Check for Cross-Driver type confusion
*/
if ($item instanceof Item) {
return $this->instance->del($item->getKey());
} else {
throw new \InvalidArgumentException('Cross-Driver type confusion detected');
}
}
/**
* @return bool
*/
protected function driverClear()
{
return $this->instance->flushDB();
}
/**
* @return bool
*/
protected function driverConnect()
{
$config = isset($this->config[ 'predis' ]) ? $this->config[ 'predis' ] : [];
$this->instance = new PredisClient(array_merge([
'host' => '127.0.0.1',
'port' => 6379,
'password' => null,
'database' => null,
], $config));
return true;
}
/********************
*
* PSR-6 Extended Methods
*
*******************/
/**
* @return driverStatistic
*/
public function getStats()
{
$info = $this->instance->info();
$size = (isset($info['Memory']['used_memory']) ? $info['Memory']['used_memory'] : 0);
$version = (isset($info['Server']['redis_version']) ? $info['Server']['redis_version'] : 0);
$date = (isset($info['Server'][ 'uptime_in_seconds' ]) ? (new \DateTime())->setTimestamp(time() - $info['Server'][ 'uptime_in_seconds' ]) : 'unknown date');
return (new driverStatistic())
->setData(implode(', ', array_keys($this->itemInstances)))
->setRawData($this->instance->info())
->setSize($size)
->setInfo(sprintf("The Redis daemon v%s is up since %s.\n For more information see RawData. \n Driver size includes the memory allocation size.", $version, $date->format(DATE_RFC2822)));
}
}