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<?php
/**
* SimplePie Redis Cache Extension
*
* @package SimplePie
* @author Jan Kozak <galvani78@gmail.com>
* @link http://galvani.cz/
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version 0.2.9
*/
/**
* Caches data to redis
*
* Registered for URLs with the "redis" protocol
*
* For example, `redis://localhost:6379/?timeout=3600&prefix=sp_&dbIndex=0` will
* connect to redis on `localhost` on port 6379. All tables will be
* prefixed with `simple_primary-` and data will expire after 3600 seconds
*
* @package SimplePie
* @subpackage Caching
* @uses Redis
*/
class SimplePie_Cache_Redis implements SimplePie_Cache_Base {
/**
* Redis instance
*
* @var \Redis
*/
protected $cache;
/**
* Options
*
* @var array
*/
protected $options;
/**
* Cache name
*
* @var string
*/
protected $name;
/**
* Cache Data
*
* @var type
*/
protected $data;
/**
* Create a new cache object
*
* @param string $location Location string (from SimplePie::$cache_location)
* @param string $name Unique ID for the cache
* @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
*/
public function __construct($location, $name, $options = null) {
//$this->cache = \flow\simple\cache\Redis::getRedisClientInstance();
$parsed = SimplePie_Cache::parse_URL($location);
$redis = new Redis();
$redis->connect($parsed['host'], $parsed['port']);
if (isset($parsed['pass'])) {
$redis->auth($parsed['pass']);
}
if (isset($parsed['path'])) {
$redis->select((int)substr($parsed['path'], 1));
}
$this->cache = $redis;
if (!is_null($options) && is_array($options)) {
$this->options = $options;
} else {
$this->options = array (
'prefix' => 'rss:simple_primary:',
'expire' => 0,
);
}
$this->name = $this->options['prefix'] . $name;
}
/**
* @param \Redis $cache
*/
public function setRedisClient(\Redis $cache) {
$this->cache = $cache;
}
/**
* Save data to the cache
*
* @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
* @return bool Successfulness
*/
public function save($data) {
if ($data instanceof SimplePie) {
$data = $data->data;
}
$response = $this->cache->set($this->name, serialize($data));
if ($this->options['expire']) {
$this->cache->expire($this->name, $this->options['expire']);
}
return $response;
}
/**
* Retrieve the data saved to the cache
*
* @return array Data for SimplePie::$data
*/
public function load() {
$data = $this->cache->get($this->name);
if ($data !== false) {
return unserialize($data);
}
return false;
}
/**
* Retrieve the last modified time for the cache
*
* @return int Timestamp
*/
public function mtime() {
$data = $this->cache->get($this->name);
if ($data !== false) {
return time();
}
return false;
}
/**
* Set the last modified time to the current time
*
* @return bool Success status
*/
public function touch() {
$data = $this->cache->get($this->name);
if ($data !== false) {
$return = $this->cache->set($this->name, $data);
if ($this->options['expire']) {
return $this->cache->expire($this->name, $this->options['expire']);
}
return $return;
}
return false;
}
/**
* Remove the cache
*
* @return bool Success status
*/
public function unlink() {
return $this->cache->set($this->name, null);
}
}