content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.cassandra.gms;
  
  import java.io.IOException;
  
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.io.util.DataInputBuffer;
  import org.apache.cassandra.io.util.DataOutputBuffer;
  import org.apache.cassandra.net.Message;
  import org.apache.cassandra.net.MessagingService;
  import org.apache.cassandra.net.NoPayload;
  import org.apache.cassandra.net.Verb;
  import org.apache.cassandra.tcm.ClusterMetadataService;
  import org.apache.cassandra.tcm.StubClusterMetadataService;
  import org.assertj.core.api.Assertions;
  
  public class GossipShutdownTest
  {
      private static final int BEFORE_CHANGE = MessagingService.Version.VERSION_40.value;
      private static final int AFTER_CHANGE = MessagingService.Version.VERSION_50.value;
  
      @BeforeClass
      public static void beforeClass()
      {
          DatabaseDescriptor.daemonInitialization();
          ClusterMetadataService.unsetInstance();
          ClusterMetadataService.setInstance(StubClusterMetadataService.forTesting());
      }
  
      @Test
      public void mixedMode() throws IOException
      {
          Message<GossipShutdown> message = Message.out(Verb.GOSSIP_SHUTDOWN, new GossipShutdown(new EndpointState(HeartBeatState.empty())));
  
          Assertions.assertThat(serde(message, BEFORE_CHANGE)).isNull();
          Assertions.assertThat(serde(message, AFTER_CHANGE)).isInstanceOf(GossipShutdown.class);
  
          // got from 4.x peer
          Assertions.assertThat(serde(Message.out(Verb.GOSSIP_SHUTDOWN, NoPayload.noPayload), BEFORE_CHANGE)).isNull();
      }
  
      private Object serde(Message<?> message, int version) throws IOException
      {
          try (DataOutputBuffer out = DataOutputBuffer.scratchBuffer.get())
          {
              Message.serializer.serialize(message, out, version);
              return Message.serializer.deserialize(new DataInputBuffer(out.unsafeGetBufferAndFlip(), false), message.header, version).payload;
          }
      }
  }