127 lines
3.3 KiB
PHP
127 lines
3.3 KiB
PHP
<?php
|
|
/*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* This software consists of voluntary contributions made by many individuals
|
|
* and is licensed under the MIT license. For more information, see
|
|
* <http://www.doctrine-project.org>.
|
|
*/
|
|
|
|
namespace Doctrine\Common\Cache;
|
|
|
|
use \Memcache;
|
|
|
|
/**
|
|
* Memcache cache provider.
|
|
*
|
|
* @link www.doctrine-project.org
|
|
* @since 2.0
|
|
* @author Benjamin Eberlei <kontakt@beberlei.de>
|
|
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
|
|
* @author Jonathan Wage <jonwage@gmail.com>
|
|
* @author Roman Borschel <roman@code-factory.org>
|
|
* @author David Abdemoulaie <dave@hobodave.com>
|
|
*/
|
|
class MemcacheCache extends CacheProvider
|
|
{
|
|
/**
|
|
* @var Memcache|null
|
|
*/
|
|
private $memcache;
|
|
|
|
/**
|
|
* Sets the memcache instance to use.
|
|
*
|
|
* @param Memcache $memcache
|
|
*
|
|
* @return void
|
|
*/
|
|
public function setMemcache(Memcache $memcache)
|
|
{
|
|
$this->memcache = $memcache;
|
|
}
|
|
|
|
/**
|
|
* Gets the memcache instance used by the cache.
|
|
*
|
|
* @return Memcache|null
|
|
*/
|
|
public function getMemcache()
|
|
{
|
|
return $this->memcache;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function doFetch($id)
|
|
{
|
|
return $this->memcache->get($id);
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function doContains($id)
|
|
{
|
|
$flags = null;
|
|
$this->memcache->get($id, $flags);
|
|
|
|
//if memcache has changed the value of "flags", it means the value exists
|
|
return ($flags !== null);
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function doSave($id, $data, $lifeTime = 0)
|
|
{
|
|
if ($lifeTime > 30 * 24 * 3600) {
|
|
$lifeTime = time() + $lifeTime;
|
|
}
|
|
return $this->memcache->set($id, $data, 0, (int) $lifeTime);
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function doDelete($id)
|
|
{
|
|
// Memcache::delete() returns false if entry does not exist
|
|
return $this->memcache->delete($id) || ! $this->doContains($id);
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function doFlush()
|
|
{
|
|
return $this->memcache->flush();
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
protected function doGetStats()
|
|
{
|
|
$stats = $this->memcache->getStats();
|
|
return array(
|
|
Cache::STATS_HITS => $stats['get_hits'],
|
|
Cache::STATS_MISSES => $stats['get_misses'],
|
|
Cache::STATS_UPTIME => $stats['uptime'],
|
|
Cache::STATS_MEMORY_USAGE => $stats['bytes'],
|
|
Cache::STATS_MEMORY_AVAILABLE => $stats['limit_maxbytes'],
|
|
);
|
|
}
|
|
}
|