hadoop-mapreduce/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/FakeFSDataInputStream.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.yarn.server.nodemanager.containermanager.localizer;

import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.hadoop.fs.PositionedReadable;
import org.apache.hadoop.fs.Seekable;

/** mock streams in unit tests */
public class FakeFSDataInputStream
    extends FilterInputStream implements Seekable, PositionedReadable {
  public FakeFSDataInputStream(InputStream in) { super(in); }
  public void seek(long pos) throws IOException { }
  public long getPos() throws IOException { return -1; }
  public boolean seekToNewSource(long targetPos) throws IOException {
    return false;
  }
  public int read(long position, byte[] buffer, int offset, int length)
    throws IOException { return -1; }
  public void readFully(long position, byte[] buffer, int offset, int length)
    throws IOException { }
  public void readFully(long position, byte[] buffer) throws IOException { }
}