SeekableOverrunFileInputStream.java

/**
 * Copyright 2015 StreamSets Inc.
 *
 * Licensed under 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 com.streamsets.pipeline.lib.parser.avro;

import com.streamsets.pipeline.lib.io.OverrunInputStream;
import org.apache.avro.file.SeekableInput;

import java.io.FileInputStream;
import java.io.IOException;

public class SeekableOverrunFileInputStream extends OverrunInputStream implements SeekableInput {

  private final FileInputStream in;

  public SeekableOverrunFileInputStream(FileInputStream in, int readLimit, boolean enabled) {
    super(in, readLimit, enabled);
    this.in = in;
  }

  @Override
  public void seek(long l) throws IOException {
    in.getChannel().position(l);
  }

  @Override
  public long tell() throws IOException {
    return in.getChannel().position();
  }

  @Override
  public long length() throws IOException {
    return in.getChannel().size();
  }
}