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.repair.messages;
  
  import java.io.IOException;
  import java.util.Objects;
  
  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.repair.RepairJobDesc;
  import org.apache.cassandra.utils.MerkleTrees;
  
  /**
   * ValidationComplete message is sent when validation compaction completed successfully.
   *
   * @since 2.0
   */
  public class ValidationResponse extends RepairMessage
  {
      /** Merkle hash tree response. Null if validation failed. */
      public final MerkleTrees trees;
  
      public ValidationResponse(RepairJobDesc desc)
      {
          super(desc);
          trees = null;
      }
  
      public ValidationResponse(RepairJobDesc desc, MerkleTrees trees)
      {
          super(desc);
          assert trees != null;
          this.trees = trees;
      }
  
      public boolean success()
      {
          return trees != null;
      }
  
      /**
       * @return a new {@link ValidationResponse} instance with all trees moved off heap, or {@code this}
       * if it's a failure response.
       */
      public ValidationResponse tryMoveOffHeap() throws IOException
      {
          return trees == null ? this : new ValidationResponse(desc, trees.tryMoveOffHeap());
      }
  
      @Override
      public boolean equals(Object o)
      {
          if (!(o instanceof ValidationResponse))
              return false;
  
          ValidationResponse other = (ValidationResponse)o;
          return desc.equals(other.desc);
      }
  
      @Override
      public int hashCode()
      {
          return Objects.hash(desc);
      }
  
      public static final IVersionedSerializer<ValidationResponse> serializer = new IVersionedSerializer<ValidationResponse>()
      {
          public void serialize(ValidationResponse message, DataOutputPlus out, int version) throws IOException
          {
              RepairJobDesc.serializer.serialize(message.desc, out, version);
              out.writeBoolean(message.success());
              if (message.trees != null)
                  MerkleTrees.serializer.serialize(message.trees, out, version);
          }
  
          public ValidationResponse deserialize(DataInputPlus in, int version) throws IOException
          {
              RepairJobDesc desc = RepairJobDesc.serializer.deserialize(in, version);
              boolean success = in.readBoolean();
  
              if (success)
              {
                  MerkleTrees trees = MerkleTrees.serializer.deserialize(in, version);
                  return new ValidationResponse(desc, trees);
              }
  
              return new ValidationResponse(desc);
          }
  
          public long serializedSize(ValidationResponse message, int version)
          {
              long size = RepairJobDesc.serializer.serializedSize(message.desc, version);
              size += TypeSizes.sizeof(message.success());
              if (message.trees != null)
                  size += MerkleTrees.serializer.serializedSize(message.trees, version);
              return size;
          }
      };
  }
  