+ return (new Status(StatusCode.SUCCESS));
+ } else {
+ return new Status(StatusCode.GONE,
+ "The node does not have a valid Switch reference.");
+ }
+ }
+ return new Status(StatusCode.INTERNALERROR,
+ "Failed to send Barrier message.");
+ }
+
+ @Override
+ public Status asyncSendBarrierMessage(Node node) {
+ if (!node.getType().equals(NodeIDType.OPENFLOW)) {
+ return new Status(StatusCode.NOTACCEPTABLE,
+ "The node does not support Barrier message.");
+ }
+
+ if (controller != null) {
+ long swid = (Long) node.getID();
+ ISwitch sw = controller.getSwitch(swid);
+ if (sw != null) {
+ sw.asyncSendBarrierMessage();
+ clearXid2Rid(swid);
+ return (new Status(StatusCode.SUCCESS));