| /* |
| * 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; |
| } |
| } |
| } |