v 1.4.0

- Updated local libraries
- PHP 7.1 support
- New, proper caching method
- Special cache folder

lib/phpfastcache/src/phpFastCache/Drivers/Predis/Driver.php

@@ -0,0 +1,161 @@
+<?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)));
+    }
+}