| /** |
| * 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.hadoop.hdfs.server.datanode.fsdataset; |
| |
| import java.io.FilterInputStream; |
| import java.io.InputStream; |
| |
| /** |
| * An input stream with length. |
| */ |
| public class LengthInputStream extends FilterInputStream { |
| |
| private final long length; |
| |
| /** |
| * Create an stream. |
| * @param in the underlying input stream. |
| * @param length the length of the stream. |
| */ |
| public LengthInputStream(InputStream in, long length) { |
| super(in); |
| this.length = length; |
| } |
| |
| /** @return the length. */ |
| public long getLength() { |
| return length; |
| } |
| |
| public InputStream getWrappedStream() { |
| return in; |
| } |
| } |