Implement datastore API, for session storage and other data.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2490 44740490-163a-0410-bde0-09ae8108e29a

1 files changed, 63 insertions, 0 deletions

diff --git a/lib/SimpleSAML/Store/Memcache.php b/lib/SimpleSAML/Store/Memcache.php
new file mode 100644
index 0000000..b7a0181
--- /dev/null
+++ b/lib/SimpleSAML/Store/Memcache.php
@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * A memcache based datastore.
+ *
+ * @package simpleSAMLphp
+ * @version $Id$
+ */
+class SimpleSAML_Store_Memcache extends SimpleSAML_Store {
+
+	/**
+	 * Initialize the memcache datastore.
+	 */
+	protected function __construct() {
+	}
+
+
+	/**
+	 * Retrieve a value from the datastore.
+	 *
+	 * @param string $type  The datatype.
+	 * @param string $key  The key.
+	 * @return mixed|NULL  The value.
+	 */
+	public function get($type, $key) {
+		assert('is_string($type)');
+		assert('is_string($key)');
+
+		return SimpleSAML_Memcache::get('simpleSAMLphp.' . $type . '.' . $key);
+	}
+
+
+	/**
+	 * Save a value to the datastore.
+	 *
+	 * @param string $type  The datatype.
+	 * @param string $key  The key.
+	 * @param mixed $value  The value.
+	 * @param int|NULL $expire  The expiration time (unix timestamp), or NULL if it never expires.
+	 */
+	public function set($type, $key, $value, $expire = NULL) {
+		assert('is_string($type)');
+		assert('is_string($key)');
+		assert('is_null($expire) || (is_int($expire) && $expire > 2592000)');
+
+		SimpleSAML_Memcache::set('simpleSAMLphp.' . $type . '.' . $key, $value, $expire);
+	}
+
+
+	/**
+	 * Delete a value from the datastore.
+	 *
+	 * @param string $type  The datatype.
+	 * @param string $key  The key.
+	 */
+	public function delete($type, $key) {
+		assert('is_string($type)');
+		assert('is_string($key)');
+
+		SimpleSAML_Memcache::delete('simpleSAMLphp.' . $type . '.' . $key, $value, $expire);
+	}
+
+}