Namespaces

• ICanBoogie
  • Storage
    • Codec
    • Storage

Classes

• APCStorage
• CacheCollection
• FileStorage
• FileStorageIterator
• RedisStorage
• RunTimeStorage
• StorageCollection

Interfaces

• Cache
• Codec
• Storage

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<?php

/*
 * This file is part of the ICanBoogie package.
 *
 * (c) Olivier Laviale <olivier.laviale@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace ICanBoogie\Storage;

/**
 * A storage using Redis.
 */
class RedisStorage implements Storage, \ArrayAccess
{
    use Storage\ArrayAccess;
    use Storage\ClearWithIterator;

    /**
     * @var \Redis
     */
    private $redis;

    /**
     * @var string
     */
    private $prefix;

    /**
     * @param \Redis|mixed $redis
     * @param string $prefix
     */
    public function __construct($redis, $prefix)
    {
        $this->redis = $redis;
        $this->prefix = $prefix;
    }

    /**
     * @inheritdoc
     */
    public function retrieve($key)
    {
        if (!$this->exists($key))
        {
            return null;
        }

        return unserialize($this->redis->get($this->prefix . $key));
    }

    /**
     * @inheritdoc
     */
    public function exists($key)
    {
        return $this->redis->exists($this->prefix . $key);
    }

    /**
     * @inheritdoc
     */
    public function store($key, $value, $ttl = null)
    {
        $key = $this->prefix . $key;

        if ($ttl)
        {
            $this->redis->set($key, serialize($value), $ttl);

            return;
        }

        $this->redis->set($key, serialize($value));
    }

    /**
     * @inheritdoc
     */
    public function eliminate($key)
    {
        $this->redis->delete($this->prefix . $key);
    }

    /**
     * @inheritdoc
     */
    public function getIterator()
    {
        $redis = $this->redis;
        $prefix = $this->prefix;
        $prefix_length = strlen($prefix);
        $it = null;

        while(($keys = $redis->scan($it)))
        {
            foreach ($keys as $internal_key)
            {
                if (strpos($internal_key, $prefix) !== 0)
                {
                    continue;
                }

                yield substr($internal_key, $prefix_length);
            }
        }
    }
}