hadoop LengthInputStream 源码
haddop LengthInputStream 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/LengthInputStream.java
/**
* 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;
}
}
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