extras/japi/java/jvpp-core/io/fd/vpp/jvpp/core/examples/CallbackJVppFacadeExample.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.JVppCoreImpl;
  23 import io.fd.vpp.jvpp.core.callback.GetNodeIndexReplyCallback;
  24 import io.fd.vpp.jvpp.core.callback.ShowVersionReplyCallback;
  25 import io.fd.vpp.jvpp.core.callfacade.CallbackJVppCoreFacade;
  26 import io.fd.vpp.jvpp.core.dto.GetNodeIndex;
  27 import io.fd.vpp.jvpp.core.dto.GetNodeIndexReply;
  28 import io.fd.vpp.jvpp.core.dto.ShowVersionReply;
  29 import java.nio.charset.StandardCharsets;
  30
  31 /**
  32  * CallbackJVppFacade together with CallbackJVppFacadeCallback allow for setting different callback for each request.
  33  * This is more convenient than the approach shown in CallbackApiExample.
  34  */
  35 public class CallbackJVppFacadeExample {
  36
  37     private static ShowVersionReplyCallback showVersionCallback1 = new ShowVersionReplyCallback() {
  38         @Override
  39         public void onShowVersionReply(final ShowVersionReply msg) {
  40             System.out.printf("ShowVersionCallback1 received ShowVersionReply: context=%d, program=%s,"
  41                     + "version=%s, buildDate=%s, buildDirectory=%s%n", msg.context,
  42                 msg.program,
  43                 msg.version,
  44                 msg.buildDate,
  45                 msg.buildDirectory);
  46         }
  47
  48         @Override
  49         public void onError(VppCallbackException ex) {
  50             System.out.printf("Received onError exception in showVersionCallback1: call=%s, reply=%d, context=%d%n",
  51                 ex.getMethodName(), ex.getErrorCode(), ex.getCtxId());
  52         }
  53     };
  54
  55     private static ShowVersionReplyCallback showVersionCallback2 = new ShowVersionReplyCallback() {
  56         @Override
  57         public void onShowVersionReply(final ShowVersionReply msg) {
  58             System.out.printf("ShowVersionCallback2 received ShowVersionReply: context=%d, program=%s,"
  59                     + "version=%s, buildDate=%s, buildDirectory=%s%n", msg.context,
  60                 msg.program,
  61                 msg.version,
  62                 msg.buildDate,
  63                 msg.buildDirectory);
  64         }
  65
  66         @Override
  67         public void onError(VppCallbackException ex) {
  68             System.out.printf("Received onError exception in showVersionCallback2: call=%s, reply=%d, context=%d%n",
  69                 ex.getMethodName(), ex.getErrorCode(), ex.getCtxId());
  70         }
  71
  72     };
  73
  74     private static GetNodeIndexReplyCallback getNodeIndexCallback = new GetNodeIndexReplyCallback() {
  75         @Override
  76         public void onGetNodeIndexReply(final GetNodeIndexReply msg) {
  77             System.out.printf("Received GetNodeIndexReply: %s%n", msg);
  78         }
  79
  80         @Override
  81         public void onError(VppCallbackException ex) {
  82             System.out.printf("Received onError exception in getNodeIndexCallback: call=%s, reply=%d, context=%d%n",
  83                 ex.getMethodName(), ex.getErrorCode(), ex.getCtxId());
  84         }
  85     };
  86
  87     private static void testCallbackFacade() throws Exception {
  88         System.out.println("Testing CallbackJVppFacade");
  89
  90         try (final JVppRegistry registry = new JVppRegistryImpl("CallbackFacadeExample");
  91              final CallbackJVppCoreFacade callbackFacade = new CallbackJVppCoreFacade(registry, new JVppCoreImpl())) {
  92             System.out.println("Successfully connected to VPP");
  93
  94             callbackFacade.showVersion(showVersionCallback1);
  95             callbackFacade.showVersion(showVersionCallback2);
  96
  97             GetNodeIndex getNodeIndexRequest = new GetNodeIndex();
  98             getNodeIndexRequest.nodeName = "dummyNode".getBytes(StandardCharsets.UTF_8);
  99             callbackFacade.getNodeIndex(getNodeIndexRequest, getNodeIndexCallback);
 100
 101             Thread.sleep(2000);
 102             System.out.println("Disconnecting...");
 103         }
 104         Thread.sleep(1000);
 105     }
 106
 107     public static void main(String[] args) throws Exception {
 108         testCallbackFacade();
 109     }
 110 }