src/vpp-api/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeNotificationExample.java

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  *
   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:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16
  17 package io.fd.vpp.jvpp.core.examples;
  18
  19 import io.fd.vpp.jvpp.JVppRegistry;
  20 import io.fd.vpp.jvpp.JVppRegistryImpl;
  21 import io.fd.vpp.jvpp.VppCallbackException;
  22 import io.fd.vpp.jvpp.core.JVppCore;
  23 import io.fd.vpp.jvpp.core.JVppCoreImpl;
  24 import io.fd.vpp.jvpp.core.callback.WantInterfaceEventsReplyCallback;
  25 import io.fd.vpp.jvpp.core.callback.SwInterfaceEventCallback;
  26 import io.fd.vpp.jvpp.core.callfacade.CallbackJVppCoreFacade;
  27 import io.fd.vpp.jvpp.core.dto.WantInterfaceEventsReply;
  28 import io.fd.vpp.jvpp.core.dto.SwInterfaceEvent;
  29
  30 public class CallbackJVppFacadeNotificationExample {
  31
  32     private static void testCallbackFacade() throws Exception {
  33         System.out.println("Testing CallbackJVppFacade for notifications");
  34
  35         try (final JVppRegistry registry = new JVppRegistryImpl("CallbackFacadeExample");
  36              final JVppCore jvpp = new JVppCoreImpl()) {
  37             final CallbackJVppCoreFacade jvppCallbackFacade = new CallbackJVppCoreFacade(registry, jvpp);
  38             System.out.println("Successfully connected to VPP");
  39
  40             final AutoCloseable notificationListenerReg =
  41                 jvppCallbackFacade.getEventRegistry().registerSwInterfaceEventCallback(
  42                         new SwInterfaceEventCallback() {
  43                             public void onSwInterfaceEvent(SwInterfaceEvent reply) {
  44                                 System.out.printf("Received interface notification: ifc: %s%n", reply);
  45                             }
  46
  47                             public void onError (VppCallbackException ex) {
  48                                 System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
  49                                         ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
  50                             }
  51                         });
  52
  53             jvppCallbackFacade.wantInterfaceEvents(NotificationUtils.getEnableInterfaceNotificationsReq(),
  54                 new WantInterfaceEventsReplyCallback() {
  55                     @Override
  56                     public void onWantInterfaceEventsReply(final WantInterfaceEventsReply reply) {
  57                         System.out.println("Interface events started");
  58                     }
  59
  60                     @Override
  61                     public void onError(final VppCallbackException ex) {
  62                         System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
  63                             ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
  64                     }
  65                 });
  66
  67             System.out.println("Changing interface configuration");
  68             NotificationUtils.getChangeInterfaceState().send(jvpp);
  69
  70             Thread.sleep(1000);
  71
  72             jvppCallbackFacade.wantInterfaceEvents(NotificationUtils.getDisableInterfaceNotificationsReq(),
  73                 new WantInterfaceEventsReplyCallback() {
  74                     @Override
  75                     public void onWantInterfaceEventsReply(final WantInterfaceEventsReply reply) {
  76                         System.out.println("Interface events stopped");
  77                     }
  78
  79                     @Override
  80                     public void onError(final VppCallbackException ex) {
  81                         System.out.printf("Received onError exception: call=%s, context=%d, retval=%d%n",
  82                             ex.getMethodName(), ex.getCtxId(), ex.getErrorCode());
  83                     }
  84                 });
  85
  86             notificationListenerReg.close();
  87
  88             Thread.sleep(2000);
  89             System.out.println("Disconnecting...");
  90         }
  91         Thread.sleep(1000);
  92     }
  93
  94     public static void main(String[] args) throws Exception {
  95         testCallbackFacade();
  96     }
  97 }