Merge pull request #1 from mcneelywv/memcached

Memcached

library/SimplePie/Cache.php

@@ -62,8 +62,9 @@ class SimplePie_Cache
 	 * @var array
 	 */
 	protected static $handlers = array(
-		'mysql' => 'SimplePie_Cache_MySQL',
-		'memcache' => 'SimplePie_Cache_Memcache',
+		'mysql'     => 'SimplePie_Cache_MySQL',
+		'memcache'  => 'SimplePie_Cache_Memcache',
+		'memcached' => 'SimplePie_Cache_Memcached',
 	);
 
 	/**

library/SimplePie/Cache/Memcached.php

@@ -0,0 +1,163 @@
+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 	* Redistributions of source code must retain the above copyright notice, this list of
+ * 	  conditions and the following disclaimer.
+ *
+ * 	* Redistributions in binary form must reproduce the above copyright notice, this list
+ * 	  of conditions and the following disclaimer in the documentation and/or other materials
+ * 	  provided with the distribution.
+ *
+ * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
+ * 	  to endorse or promote products derived from this software without specific prior
+ * 	  written permission.
+ *
+ * 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 HOLDERS
+ * AND 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.
+ *
+ * @package SimplePie
+ * @version 1.4-dev
+ * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Geoffrey Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+
+/**
+ * Caches data to memcached
+ *
+ * Registered for URLs with the "memcached" protocol
+ *
+ * For example, `memcached://localhost:11211/?timeout=3600&prefix=sp_` will
+ * connect to memcached on `localhost` on port 11211. All tables will be
+ * prefixed with `sp_` and data will expire after 3600 seconds
+ *
+ * @package    SimplePie
+ * @subpackage Caching
+ * @author     Paul L. McNeely
+ * @uses       Memcached
+ */
+class SimplePie_Cache_Memcached implements SimplePie_Cache_Base
+{
+    /**
+     * Memcached instance
+     * @var Memcached
+     */
+    protected $cache;
+
+    /**
+     * Options
+     * @var array
+     */
+    protected $options;
+
+    /**
+     * Cache name
+     * @var string
+     */
+    protected $name;
+
+    /**
+     * 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, $type) {
+        $this->options = array(
+            'host'   => '127.0.0.1',
+            'port'   => 11211,
+            'extras' => array(
+                'timeout' => 3600, // one hour
+                'prefix'  => 'simplepie_',
+            ),
+        );
+        $this->options = SimplePie_Misc::array_merge_recursive($this->options, SimplePie_Cache::parse_URL($location));
+
+        $this->name = $this->options['extras']['prefix'] . md5("$name:$type");
+
+        $this->cache = new Memcached();
+        $this->cache->addServer($this->options['host'], (int)$this->options['port']);
+    }
+
+    /**
+     * 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;
+        }
+        return $this->cache->set($this->name, serialize($data), (int)$this->options['extras']['timeout']);
+    }
+
+    /**
+     * 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) {
+            // essentially ignore the mtime because Memcached expires on its own
+            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, $data, (int)$this->options['extras']['timeout']);
+        }
+
+        return false;
+    }
+
+    /**
+     * Remove the cache
+     * @return bool Success status
+     */
+    public function unlink() {
+        return $this->cache->delete($this->name, 0);
+    }
+}