From 877e15a6e6400d2b02ec013e226d9889def4dd7d Mon Sep 17 00:00:00 2001
From: Marc Alexander <admin@m-a-styles.de>
Date: Sun, 12 Mar 2017 15:52:41 +0100
Subject: [PATCH] [ticket/15122] Add cache driver for memcached
PHPBB3-15122
---
phpBB/phpbb/cache/driver/memcached.php | 134 +++++++++++++++++++++++++
1 file changed, 134 insertions(+)
create mode 100644 phpBB/phpbb/cache/driver/memcached.php
diff --git a/phpBB/phpbb/cache/driver/memcached.php b/phpBB/phpbb/cache/driver/memcached.php
new file mode 100644
index 0000000000..105e763af4
--- /dev/null
+++ b/phpBB/phpbb/cache/driver/memcached.php
@@ -0,0 +1,134 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\cache\driver;
+
+if (!defined('PHPBB_ACM_MEMCACHED_PORT'))
+{
+ define('PHPBB_ACM_MEMCACHED_PORT', 11211);
+}
+
+if (!defined('PHPBB_ACM_MEMCACHED_COMPRESS'))
+{
+ define('PHPBB_ACM_MEMCACHED_COMPRESS', true);
+}
+
+if (!defined('PHPBB_ACM_MEMCACHED_HOST'))
+{
+ define('PHPBB_ACM_MEMCACHED_HOST', 'localhost');
+}
+
+if (!defined('PHPBB_ACM_MEMCACHED'))
+{
+ //can define multiple servers with host1/port1,host2/port2 format
+ define('PHPBB_ACM_MEMCACHED', PHPBB_ACM_MEMCACHED_HOST . '/' . PHPBB_ACM_MEMCACHED_PORT);
+}
+
+/**
+* ACM for Memcached
+*/
+class memcached extends \phpbb\cache\driver\memory
+{
+ /** @var string Extension to use */
+ protected $extension = 'memcached';
+
+ /** @var \Memcached Memcached class */
+ protected $memcached;
+
+ /** @var int Flags */
+ protected $flags = 0;
+
+ /**
+ * Memcached constructor
+ */
+ public function __construct()
+ {
+ // Call the parent constructor
+ parent::__construct();
+
+ $this->memcached = new \Memcached();
+ $this->memcached->setOption(\Memcached::OPT_BINARY_PROTOCOL, true);
+ // Memcached defaults to using compression, disable if we don't want
+ // to use it
+ if (!PHPBB_ACM_MEMCACHED_COMPRESS)
+ {
+ $this->memcached->setOption(\Memcached::OPT_COMPRESSION, false);
+ }
+
+ foreach (explode(',', PHPBB_ACM_MEMCACHE) as $u)
+ {
+ $parts = explode('/', $u);
+ $this->memcached->addServer(trim($parts[0]), trim($parts[1]));
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function unload()
+ {
+ parent::unload();
+
+ unset($this->memcached);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function purge()
+ {
+ $this->memcached->flush();
+
+ parent::purge();
+ }
+
+ /**
+ * Fetch an item from the cache
+ *
+ * @param string $var Cache key
+ *
+ * @return mixed Cached data
+ */
+ protected function _read($var)
+ {
+ return $this->memcached->get($this->key_prefix . $var);
+ }
+
+ /**
+ * Store data in the cache
+ *
+ * @param string $var Cache key
+ * @param mixed $data Data to store
+ * @param int $ttl Time-to-live of cached data
+ * @return bool True if the operation succeeded
+ */
+ protected function _write($var, $data, $ttl = 2592000)
+ {
+ if (!$this->memcached->replace($this->key_prefix . $var, $data, $ttl))
+ {
+ return $this->memcached->set($this->key_prefix . $var, $data, $ttl);
+ }
+ return true;
+ }
+
+ /**
+ * Remove an item from the cache
+ *
+ * @param string $var Cache key
+ * @return bool True if the operation succeeded
+ */
+ protected function _delete($var)
+ {
+ return $this->memcached->delete($this->key_prefix . $var);
+ }
+}