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-rw-r--r--includes/MemcachedSessions.php74
1 files changed, 74 insertions, 0 deletions
diff --git a/includes/MemcachedSessions.php b/includes/MemcachedSessions.php
new file mode 100644
index 00000000..af49109c
--- /dev/null
+++ b/includes/MemcachedSessions.php
@@ -0,0 +1,74 @@
+<?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
+ *
+ * @package MediaWiki
+ */
+
+/**
+ * @todo document
+ */
+function memsess_key( $id ) {
+ global $wgDBname;
+ return "$wgDBname:session:$id";
+}
+
+/**
+ * @todo document
+ */
+function memsess_open( $save_path, $session_name ) {
+ # NOP, $wgMemc should be set up already
+ return true;
+}
+
+/**
+ * @todo document
+ */
+function memsess_close() {
+ # NOP
+ return true;
+}
+
+/**
+ * @todo document
+ */
+function memsess_read( $id ) {
+ global $wgMemc;
+ $data = $wgMemc->get( memsess_key( $id ) );
+ if( ! $data ) return '';
+ return $data;
+}
+
+/**
+ * @todo document
+ */
+function memsess_write( $id, $data ) {
+ global $wgMemc;
+ $wgMemc->set( memsess_key( $id ), $data, 3600 );
+ return true;
+}
+
+/**
+ * @todo document
+ */
+function memsess_destroy( $id ) {
+ global $wgMemc;
+ $wgMemc->delete( memsess_key( $id ) );
+ return true;
+}
+
+/**
+ * @todo document
+ */
+function memsess_gc( $maxlifetime ) {
+ # NOP: Memcached performs garbage collection.
+ return true;
+}
+
+session_set_save_handler( 'memsess_open', 'memsess_close', 'memsess_read', 'memsess_write', 'memsess_destroy', 'memsess_gc' );
+
+?>