mirror of
https://github.com/friendica/friendica
synced 2024-12-29 02:42:18 +00:00
94 lines
2.1 KiB
PHP
94 lines
2.1 KiB
PHP
<?php
|
|
|
|
namespace Friendica\Core\Cache;
|
|
|
|
use Friendica\BaseObject;
|
|
use Friendica\Core\Cache;
|
|
|
|
/**
|
|
* Memcached Cache Driver
|
|
*
|
|
* @author Hypolite Petovan <mrpetovan@gmail.com>
|
|
*/
|
|
class MemcachedCacheDriver extends BaseObject implements IMemoryCacheDriver
|
|
{
|
|
use TraitCompareSet;
|
|
use TraitCompareDelete;
|
|
|
|
/**
|
|
* @var Memcached
|
|
*/
|
|
private $memcached;
|
|
|
|
public function __construct(array $memcached_hosts)
|
|
{
|
|
if (!class_exists('Memcached', false)) {
|
|
throw new \Exception('Memcached class isn\'t available');
|
|
}
|
|
|
|
$this->memcached = new \Memcached();
|
|
|
|
$this->memcached->addServers($memcached_hosts);
|
|
|
|
if (count($this->memcached->getServerList()) == 0) {
|
|
throw new \Exception('Expected Memcached servers aren\'t available, config:' . var_export($memcached_hosts, true));
|
|
}
|
|
}
|
|
|
|
public function get($key)
|
|
{
|
|
$return = null;
|
|
|
|
// We fetch with the hostname as key to avoid problems with other applications
|
|
$value = $this->memcached->get(self::getApp()->get_hostname() . ':' . $key);
|
|
|
|
if ($this->memcached->getResultCode() === \Memcached::RES_SUCCESS) {
|
|
$return = $value;
|
|
}
|
|
|
|
return $return;
|
|
}
|
|
|
|
public function set($key, $value, $ttl = Cache::FIVE_MINUTES)
|
|
{
|
|
// We store with the hostname as key to avoid problems with other applications
|
|
if ($ttl > 0) {
|
|
return $this->memcached->set(
|
|
self::getApp()->get_hostname() . ':' . $key,
|
|
$value,
|
|
time() + $ttl
|
|
);
|
|
} else {
|
|
return $this->memcached->set(
|
|
self::getApp()->get_hostname() . ':' . $key,
|
|
$value
|
|
);
|
|
}
|
|
|
|
}
|
|
|
|
public function delete($key)
|
|
{
|
|
$return = $this->memcached->delete(self::getApp()->get_hostname() . ':' . $key);
|
|
|
|
return $return;
|
|
}
|
|
|
|
public function clear()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Sets a value if it's not already stored
|
|
*
|
|
* @param string $key The cache key
|
|
* @param mixed $value The old value we know from the cache
|
|
* @param int $ttl The cache lifespan, must be one of the Cache constants
|
|
* @return bool
|
|
*/
|
|
public function add($key, $value, $ttl = Cache::FIVE_MINUTES)
|
|
{
|
|
return $this->memcached->add(self::getApp()->get_hostname() . ":" . $key, $value, $ttl);
|
|
}
|
|
}
|