inital commit

webroot/forum/inc/cachehandlers/memcache.php

@@ -0,0 +1,157 @@
+<?php
+/**
+ * MyBB 1.8
+ * Copyright 2014 MyBB Group, All Rights Reserved
+ *
+ * Website: http://www.mybb.com
+ * License: http://www.mybb.com/about/license
+ *
+ */
+
+/**
+ * Memcache Cache Handler
+ */
+class memcacheCacheHandler implements CacheHandlerInterface
+{
+	/**
+	 * The memcache server resource
+	 *
+	 * @var Memcache
+	 */
+	public $memcache;
+
+	/**
+	 * Unique identifier representing this copy of MyBB
+	 *
+	 * @var string
+	 */
+	public $unique_id;
+
+	function __construct()
+	{
+		global $mybb;
+
+		if(!function_exists("memcache_connect"))
+		{
+			// Check if our DB engine is loaded
+			if(!extension_loaded("Memcache"))
+			{
+				// Throw our super awesome cache loading error
+				$mybb->trigger_generic_error("memcache_load_error");
+				die;
+			}
+		}
+	}
+
+	/**
+	 * Connect and initialize this handler.
+	 *
+	 * @return boolean True if successful, false on failure
+	 */
+	function connect()
+	{
+		global $mybb, $error_handler;
+
+		$this->memcache = new Memcache;
+
+		if($mybb->config['memcache']['host'])
+		{
+			$mybb->config['memcache'][0] = $mybb->config['memcache'];
+			unset($mybb->config['memcache']['host']);
+			unset($mybb->config['memcache']['port']);
+		}
+
+		foreach($mybb->config['memcache'] as $memcache)
+		{
+			if(!$memcache['host'])
+			{
+				$message = "Please configure the memcache settings in inc/config.php before attempting to use this cache handler";
+				$error_handler->trigger($message, MYBB_CACHEHANDLER_LOAD_ERROR);
+				die;
+			}
+
+			if(!isset($memcache['port']))
+			{
+				$memcache['port'] = "11211";
+			}
+
+			$this->memcache->addServer($memcache['host'], $memcache['port']);
+
+			if(!$this->memcache)
+			{
+				$message = "Unable to connect to the memcache server on {$memcache['memcache_host']}:{$memcache['memcache_port']}. Are you sure it is running?";
+				$error_handler->trigger($message, MYBB_CACHEHANDLER_LOAD_ERROR);
+				die;
+			}
+		}
+
+		// Set a unique identifier for all queries in case other forums are using the same memcache server
+		$this->unique_id = md5(MYBB_ROOT);
+
+		return true;
+	}
+
+	/**
+	 * Retrieve an item from the cache.
+	 *
+	 * @param string $name The name of the cache
+	 * @return mixed Cache data if successful, false if failure
+	 */
+	function fetch($name)
+	{
+		$data = $this->memcache->get($this->unique_id."_".$name);
+
+		if($data === false)
+		{
+			return false;
+		}
+		else
+		{
+			return $data;
+		}
+	}
+
+	/**
+	 * Write an item to the cache.
+	 *
+	 * @param string $name The name of the cache
+	 * @param mixed $contents The data to write to the cache item
+	 * @return boolean True on success, false on failure
+	 */
+	function put($name, $contents)
+	{
+		return $this->memcache->set($this->unique_id."_".$name, $contents);
+	}
+
+	/**
+	 * Delete a cache
+	 *
+	 * @param string $name The name of the cache
+	 * @return boolean True on success, false on failure
+	 */
+	function delete($name)
+	{
+		return $this->memcache->delete($this->unique_id."_".$name);
+	}
+
+	/**
+	 * Disconnect from the cache
+	 */
+	function disconnect()
+	{
+		@$this->memcache->close();
+	}
+
+	/**
+	 * @param string $name
+	 *
+	 * @return string
+	 */
+	function size_of($name='')
+	{
+		global $lang;
+
+		return $lang->na;
+	}
+}
+