| /* |
| * 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()); |
| } |
| } |
| } |