* @ingroup Cache
*/
class ObjectCacheSessionHandler {
- /** @var array Map of (session ID => SHA-1 of the data) */
- protected static $hashCache = array();
const TTL_REFRESH_WINDOW = 600; // refresh if expiring in 10 minutes
*/
protected static function getCache() {
global $wgSessionCacheType;
-
return ObjectCache::getInstance( $wgSessionCacheType );
}
return wfMemcKey( 'session', $id );
}
- /**
- * @param mixed $data
- * @return string
- */
- protected static function getHash( $data ) {
- return sha1( serialize( $data ) );
- }
-
/**
* Callback when opening a session.
*
*/
static function read( $id ) {
$data = self::getCache()->get( self::getKey( $id ) );
-
- self::$hashCache = array( $id => self::getHash( $data ) );
-
- return ( $data === false ) ? '' : $data;
+ if ( $data === false ) {
+ return '';
+ }
+ return $data;
}
/**
*/
static function write( $id, $data ) {
global $wgObjectCacheSessionExpiry;
-
- // Only issue a write if anything changed (PHP 5.6 already does this)
- if ( !isset( self::$hashCache[$id] )
- || self::getHash( $data ) !== self::$hashCache[$id]
- ) {
- self::getCache()->set( self::getKey( $id ), $data, $wgObjectCacheSessionExpiry );
- }
-
+ self::getCache()->set( self::getKey( $id ), $data, $wgObjectCacheSessionExpiry );
return true;
}