includes/MemcachedSessions.php

   1 <?php
   2
   3 /*
   4         This file gets included if $wgSessionsInMemcache is set in the config.
   5         It redirects session handling functions to store their data in memcached
   6         instead of the local filesystem. Depending on circumstances, it may also
   7         be necessary to change the cookie settings to work across hostnames.
   8
   9         See: http://www.php.net/manual/en/function.session-set-save-handler.php
  10 */
  11
  12
  13 function memsess_key( $id ) {
  14         global $wgDBname;
  15         return "$wgDBname:session:$id";
  16 }
  17
  18 function memsess_open( $save_path, $session_name ) {
  19         # NOP, $wgMemc should be set up already
  20         return true;
  21 }
  22
  23 function memsess_close() {
  24         # NOP
  25         return true;
  26 }
  27
  28 function memsess_read( $id ) {
  29         global $wgMemc;
  30         $data = $wgMemc->get( memsess_key( $id ) );
  31         if( ! $data ) return "";
  32         return $data;
  33 }
  34
  35 function memsess_write( $id, $data ) {
  36         global $wgMemc;
  37         $wgMemc->set( memsess_key( $id ), $data, 3600 );
  38         return true;
  39 }
  40
  41 function memsess_destroy( $id ) {
  42         global $wgMemc;
  43         $wgMemc->delete( memsess_key( $id ) );
  44         return true;
  45 }
  46
  47 function memsess_gc( $maxlifetime ) {
  48         # NOP: Memcached performs garbage collection.
  49         return true;
  50 }
  51
  52 session_set_save_handler( "memsess_open", "memsess_close", "memsess_read", "memsess_write", "memsess_destroy", "memsess_gc" );
  53
  54 ?>