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.service.paxos.cleanup;
  
  import java.io.IOException;
  import java.util.UUID;
  
  import javax.annotation.Nullable;
  
  import org.apache.cassandra.db.TypeSizes;
  import org.apache.cassandra.io.IVersionedSerializer;
  import org.apache.cassandra.io.util.DataInputPlus;
  import org.apache.cassandra.io.util.DataOutputPlus;
  import org.apache.cassandra.net.IVerbHandler;
  import org.apache.cassandra.repair.SharedContext;
  import org.apache.cassandra.utils.UUIDSerializer;
  
  public class PaxosCleanupResponse
  {
      public final UUID session;
      public final boolean wasSuccessful;
      public final String message;
  
      public PaxosCleanupResponse(UUID session, boolean wasSuccessful, @Nullable String message)
      {
          this.session = session;
          this.wasSuccessful = wasSuccessful;
          this.message = message;
      }
  
      public static PaxosCleanupResponse success(UUID session)
      {
          return new PaxosCleanupResponse(session, true, null);
      }
  
      public static PaxosCleanupResponse failed(UUID session, String message)
      {
          return new PaxosCleanupResponse(session, false, message);
      }
  
      public static IVerbHandler<PaxosCleanupResponse> createVerbHandler(SharedContext ctx)
      {
          return message -> ctx.paxosRepairState().finishSession(message.from(), message.payload);
      }
  
      public static final IVerbHandler<PaxosCleanupResponse> verbHandler = createVerbHandler(SharedContext.Global.instance);
  
      public static final IVersionedSerializer<PaxosCleanupResponse> serializer = new IVersionedSerializer<PaxosCleanupResponse>()
      {
          public void serialize(PaxosCleanupResponse finished, DataOutputPlus out, int version) throws IOException
          {
              UUIDSerializer.serializer.serialize(finished.session, out, version);
              out.writeBoolean(finished.wasSuccessful);
              out.writeBoolean(finished.message != null);
              if (finished.message != null)
                  out.writeUTF(finished.message);
          }
  
          public PaxosCleanupResponse deserialize(DataInputPlus in, int version) throws IOException
          {
              UUID session = UUIDSerializer.serializer.deserialize(in, version);
              boolean success = in.readBoolean();
              String message = in.readBoolean() ? in.readUTF() : null;
              return new PaxosCleanupResponse(session, success, message);
          }
  
          public long serializedSize(PaxosCleanupResponse finished, int version)
          {
              long size = UUIDSerializer.serializer.serializedSize(finished.session, version);
              size += TypeSizes.sizeof(finished.wasSuccessful);
              size += TypeSizes.sizeof(finished.message != null);
              if (finished.message != null)
                  size += TypeSizes.sizeof(finished.message);
              return size;
          }
      };
  }
  