public void signIn ( String key , Collection < WebSocketConnection > connections ) { if ( connections . isEmpty ( ) ) { return ; } Map < WebSocketConnection , WebSocketConnection > newMap = new HashMap <> ( ) ; for ( WebSocketConnection conn : connections ) { newMap . put ( conn , conn ) ; } ConcurrentMap < WebSocketConnection , WebSocketConnection > bag = ensureConnectionList ( key ) ; bag . putAll ( newMap ) ; }
Sign in a group of connections to the registry by key