/vendor/doctrine/cache/lib/Doctrine/Common/Cache/MemcacheCache.php |
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<?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'], |
); |
} |
} |