1 files changed, 98 insertions, 0 deletions
diff --git a/includes/cache/MemcachedSessions.php b/includes/cache/MemcachedSessions.php
new file mode 100644
index 00000000..36733595
--- /dev/null
+++ b/includes/cache/MemcachedSessions.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * This file gets included if $wgSessionsInMemcache is set in the config.
+ * It redirects session handling functions to store their data in memcached
+ * instead of the local filesystem. Depending on circumstances, it may also
+ * be necessary to change the cookie settings to work across hostnames.
+ * See: http://www.php.net/manual/en/function.session-set-save-handler.php
+ *
+ * @file
+ * @ingroup Cache
+ */
+
+/**
+ * Get a cache key for the given session id.
+ *
+ * @param $id String: session id
+ * @return String: cache key
+ */
+function memsess_key( $id ) {
+	return wfMemcKey( 'session', $id );
+}
+
+/**
+ * Callback when opening a session.
+ * NOP: $wgMemc should be set up already.
+ *
+ * @param $save_path String: path used to store session files, unused
+ * @param $session_name String: session name
+ * @return Boolean: success
+ */
+function memsess_open( $save_path, $session_name ) {
+	return true;
+}
+
+/**
+ * Callback when closing a session.
+ * NOP.
+ *
+ * @return Boolean: success
+ */
+function memsess_close() {
+	return true;
+}
+
+/**
+ * Callback when reading session data.
+ *
+ * @param $id String: session id
+ * @return Mixed: session data
+ */
+function memsess_read( $id ) {
+	global $wgMemc;
+	$data = $wgMemc->get( memsess_key( $id ) );
+	if( ! $data ) return '';
+	return $data;
+}
+
+/**
+ * Callback when writing session data.
+ *
+ * @param $id String: session id
+ * @param $data Mixed: session data
+ * @return Boolean: success
+ */
+function memsess_write( $id, $data ) {
+	global $wgMemc;
+	$wgMemc->set( memsess_key( $id ), $data, 3600 );
+	return true;
+}
+
+/**
+ * Callback to destroy a session when calling session_destroy().
+ *
+ * @param $id String: session id
+ * @return Boolean: success
+ */
+function memsess_destroy( $id ) {
+	global $wgMemc;
+
+	$wgMemc->delete( memsess_key( $id ) );
+	return true;
+}
+
+/**
+ * Callback to execute garbage collection.
+ * NOP: Memcached performs garbage collection.
+ *
+ * @param $maxlifetime Integer: maximum session life time
+ * @return Boolean: success
+ */
+function memsess_gc( $maxlifetime ) {
+	return true;
+}
+
+function memsess_write_close() {
+	session_write_close();
+}
+