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.io.sstable.metadata;
  
  import java.io.IOException;
  
  import org.apache.cassandra.db.TypeSizes;
  import org.apache.cassandra.io.sstable.format.Version;
  import org.apache.cassandra.io.util.DataInputPlus;
  import org.apache.cassandra.io.util.DataOutputPlus;
  
  /**
   * SSTable metadata component used only for validating SSTable.
   *
   * This part is read before opening main Data.db file for validation
   * and discarded immediately after that.
   */
  public class ValidationMetadata extends MetadataComponent
  {
      public static final IMetadataComponentSerializer serializer = new ValidationMetadataSerializer();
  
      public final String partitioner;
      public final double bloomFilterFPChance;
  
      public ValidationMetadata(String partitioner, double bloomFilterFPChance)
      {
          this.partitioner = partitioner;
          this.bloomFilterFPChance = bloomFilterFPChance;
      }
  
      public MetadataType getType()
      {
          return MetadataType.VALIDATION;
      }
  
      @Override
      public boolean equals(Object o)
      {
          if (this == o) return true;
          if (o == null || getClass() != o.getClass()) return false;
  
          ValidationMetadata that = (ValidationMetadata) o;
          return Double.compare(that.bloomFilterFPChance, bloomFilterFPChance) == 0 && partitioner.equals(that.partitioner);
      }
  
      @Override
      public int hashCode()
      {
          int result;
          long temp;
          result = partitioner.hashCode();
          temp = Double.doubleToLongBits(bloomFilterFPChance);
          result = 31 * result + (int) (temp ^ (temp >>> 32));
          return result;
      }
  
      public static class ValidationMetadataSerializer implements IMetadataComponentSerializer<ValidationMetadata>
      {
          public int serializedSize(Version version, ValidationMetadata component) throws IOException
          {
              return TypeSizes.sizeof(component.partitioner) + 8;
          }
  
          public void serialize(Version version, ValidationMetadata component, DataOutputPlus out) throws IOException
          {
              out.writeUTF(component.partitioner);
              out.writeDouble(component.bloomFilterFPChance);
          }
  
          public ValidationMetadata deserialize(Version version, DataInputPlus in) throws IOException
          {
  
              return new ValidationMetadata(in.readUTF(), in.readDouble());
          }
      }
  }
  