/*
* 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.lucene.replicator.nrt;
/** Holds metadata details about a single file that we use to confirm two files (one remote, one local) are in fact "identical".
*
* @lucene.experimental */
public class FileMetaData {
// Header and footer of the file must be identical between primary and replica to consider the files equal:
public final byte[] header;
public final byte[] footer;
public final long length;
// Used to ensure no bit flips when copying the file:
public final long checksum;
public FileMetaData(byte[] header, byte[] footer, long length, long checksum) {
this.header = header;
this.footer = footer;
this.length = length;
this.checksum = checksum;
}
@Override
public String toString() {
return "FileMetaData(length=" + length + ")";
}
}