2 * Copyright (c) 2016 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package io.fd.vpp.jvpp.core.examples;
19 import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getChangeInterfaceState;
20 import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getDisableInterfaceNotificationsReq;
21 import static io.fd.vpp.jvpp.core.examples.NotificationUtils.getEnableInterfaceNotificationsReq;
23 import io.fd.vpp.jvpp.JVppRegistry;
24 import io.fd.vpp.jvpp.JVppRegistryImpl;
25 import io.fd.vpp.jvpp.core.JVppCoreImpl;
26 import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
27 import io.fd.vpp.jvpp.core.callback.SwInterfaceEventCallback;
28 import io.fd.vpp.jvpp.core.dto.SwInterfaceEvent;
29 import io.fd.vpp.jvpp.VppCallbackException;
31 public class FutureApiNotificationExample {
33 private static void testFutureApi() throws Exception {
34 System.out.println("Testing Java future API for notifications");
35 try (final JVppRegistry registry = new JVppRegistryImpl("FutureApiNotificationExample");
36 final FutureJVppCoreFacade jvppFacade = new FutureJVppCoreFacade(registry, new JVppCoreImpl());
37 final AutoCloseable notificationListenerReg =
38 jvppFacade.getEventRegistry()
39 .registerSwInterfaceEventCallback(new SwInterfaceEventCallback() {
40 public void onSwInterfaceEvent(SwInterfaceEvent reply) {
41 System.out.printf("Received interface notification: ifc: %s%n", reply);
44 public void onError (VppCallbackException ex) {
45 System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
46 ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
49 System.out.println("Successfully connected to VPP");
50 jvppFacade.wantInterfaceEvents(getEnableInterfaceNotificationsReq()).toCompletableFuture().get();
51 System.out.println("Interface events started");
53 System.out.println("Changing interface configuration");
54 jvppFacade.swInterfaceSetFlags(getChangeInterfaceState()).toCompletableFuture().get();
58 jvppFacade.wantInterfaceEvents(getDisableInterfaceNotificationsReq()).toCompletableFuture().get();
59 System.out.println("Interface events stopped");
60 System.out.println("Disconnecting...");
64 public static void main(String[] args) throws Exception {