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-rw-r--r--plugins/XCachePlugin.php112
1 files changed, 112 insertions, 0 deletions
diff --git a/plugins/XCachePlugin.php b/plugins/XCachePlugin.php
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+++ b/plugins/XCachePlugin.php
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+<?php
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2009, StatusNet, Inc.
+ *
+ * Plugin to implement cache interface for XCache variable cache
+ *
+ * PHP version 5
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category Cache
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2009 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+if (!defined('STATUSNET')) {
+ // This check helps protect against security problems;
+ // your code file can't be executed directly from the web.
+ exit(1);
+}
+
+/**
+ * A plugin to use XCache's variable cache for the cache interface
+ *
+ * New plugin interface lets us use alternative cache systems
+ * for caching. This one uses XCache's variable cache.
+ *
+ * @category Cache
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2009 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+class XCachePlugin extends Plugin
+{
+ /**
+ * Get a value associated with a key
+ *
+ * The value should have been set previously.
+ *
+ * @param string &$key in; Lookup key
+ * @param mixed &$value out; value associated with key
+ *
+ * @return boolean hook success
+ */
+
+ function onStartCacheGet(&$key, &$value)
+ {
+ $value = xcache_get($key);
+ if (!is_null($value)) {
+ $value = unserialize($value);
+ }
+ Event::handle('EndCacheGet', array($key, &$value));
+ return false;
+ }
+
+ /**
+ * Associate a value with a key
+ *
+ * @param string &$key in; Key to use for lookups
+ * @param mixed &$value in; Value to associate
+ * @param integer &$flag in; Flag (passed through to Memcache)
+ * @param integer &$expiry in; Expiry (passed through to Memcache)
+ * @param boolean &$success out; Whether the set was successful
+ *
+ * @return boolean hook success
+ */
+
+ function onStartCacheSet(&$key, &$value, &$flag, &$expiry, &$success)
+ {
+ $success = xcache_set($key, serialize($value),
+ (is_null($expiry) ? 0 : $expiry));
+
+ Event::handle('EndCacheSet', array($key, $value, $flag,
+ $expiry));
+ return false;
+ }
+
+ /**
+ * Delete a value associated with a key
+ *
+ * @param string &$key in; Key to lookup
+ * @param boolean &$success out; whether it worked
+ *
+ * @return boolean hook success
+ */
+
+ function onStartCacheDelete(&$key, &$success)
+ {
+ $success = xcache_unset($key);
+ Event::handle('EndCacheDelete', array($key));
+ return false;
+ }
+}
+