Version 1

[yaffs-website] / vendor / doctrine / cache / lib / Doctrine / Common / Cache / MemcacheCache.php

diff --git a/vendor/doctrine/cache/lib/Doctrine/Common/Cache/MemcacheCache.php b/vendor/doctrine/cache/lib/Doctrine/Common/Cache/MemcacheCache.php
new file mode 100644 (file)
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+++ b/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'],
+        );
+    }
+}