blob: 2e59e3bcce481f21c3179166500ef060b4ebed76 [file] [log] [blame]
/*
* 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.util;
import java.io.File;
import java.io.IOException;
import org.apache.cassandra.utils.ChecksumType;
public final class ChecksummedRandomAccessReader
{
@SuppressWarnings("resource") // The Rebufferer owns both the channel and the validator and handles closing both.
public static RandomAccessReader open(File file, File crcFile) throws IOException
{
ChannelProxy channel = new ChannelProxy(file);
try
{
DataIntegrityMetadata.ChecksumValidator validator = new DataIntegrityMetadata.ChecksumValidator(ChecksumType.CRC32,
RandomAccessReader.open(crcFile),
file.getPath());
Rebufferer rebufferer = new ChecksummedRebufferer(channel, validator);
return new RandomAccessReader.RandomAccessReaderWithOwnChannel(rebufferer);
}
catch (Throwable t)
{
channel.close();
throw t;
}
}
}