/*
 * 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
 *
 *   https://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.accumulo.core.file.map;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.MapFile;
import org.apache.hadoop.io.SequenceFile;

public class MapFileUtil {
  public static MapFile.Reader openMapFile(FileSystem fs, String dirName, Configuration conf)
      throws IOException {
    MapFile.Reader mfr = null;
    try {
      mfr = new MapFile.Reader(fs.makeQualified(new Path(dirName)), conf);
      return mfr;
    } catch (IOException e) {
      throw e;
    }
  }

  public static SequenceFile.Reader openIndex(Configuration conf, FileSystem fs, Path mapFile)
      throws IOException {
    Path indexPath = new Path(mapFile, MapFile.INDEX_FILE_NAME);
    SequenceFile.Reader index = null;
    try {
      index = new SequenceFile.Reader(conf, SequenceFile.Reader.file(fs.makeQualified(indexPath)));
      return index;
    } catch (IOException e) {
      throw e;
    }
  }
}
