1 files changed, 75 insertions, 0 deletions
diff --git a/plugins/LdapCommon/MemcacheSchemaCache.php b/plugins/LdapCommon/MemcacheSchemaCache.php
new file mode 100644
index 000000000..6b91d17d6
--- /dev/null
+++ b/plugins/LdapCommon/MemcacheSchemaCache.php
@@ -0,0 +1,75 @@
+<?php
+/** 
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Cache the LDAP schema in memcache to improve performance
+ *
+ * PHP version 5
+ *
+ * LICENCE: 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  Plugin
+ * @package   StatusNet
+ * @author    Craig Andrews <candrews@integralblue.com>
+ * @copyright 2009 Craig Andrews http://candrews.integralblue.com
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link      http://status.net/
+ */
+class MemcacheSchemaCache implements Net_LDAP2_SchemaCache
+{
+    protected $c;
+    protected $cacheKey;
+
+    /**
+    * Initialize the simple cache
+    *
+    * Config is as following:
+    *  memcache     memcache instance
+    *  cachekey  the key in the cache to look at
+    *
+    * @param array $cfg Config array
+    */
+    public function MemcacheSchemaCache($cfg)
+    {
+        $this->c = $cfg['c'];
+        $this->cacheKey = $cfg['cacheKey'];
+    }
+
+    /**
+    * Return the schema object from the cache
+    *
+    * @return Net_LDAP2_Schema|Net_LDAP2_Error|false
+    */
+    public function loadSchema()
+    {
+         return $this->c->get($this->cacheKey);
+    }
+
+    /**
+    * Store a schema object in the cache
+    *
+    * This method will be called, if Net_LDAP2 has fetched a fresh
+    * schema object from LDAP and wants to init or refresh the cache.
+    *
+    * To invalidate the cache and cause Net_LDAP2 to refresh the cache,
+    * you can call this method with null or false as value.
+    * The next call to $ldap->schema() will then refresh the caches object.
+    *
+    * @param mixed $schema The object that should be cached
+    * @return true|Net_LDAP2_Error|false
+    */
+    public function storeSchema($schema) {
+        return $this->c->set($this->cacheKey, $schema);
+    }
+}