HadoopFsEndPointDataset.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 gobblin.data.management.copy.replication;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

import gobblin.dataset.FileSystemDataset;
import gobblin.util.HadoopUtils;

/**
 * {@link FileSystemDataset} wrapper class for {@link HadoopFsEndPoint}
 * @author mitu
 *
 */
public class HadoopFsEndPointDataset implements FileSystemDataset{

  private final HadoopFsEndPoint endPoint;
  private Path qualifiedDatasetRoot;

  public HadoopFsEndPointDataset(HadoopFsEndPoint endPoint){
    this.endPoint = endPoint;
    Configuration conf = HadoopUtils.newConfiguration();
    try {
      FileSystem fs = FileSystem.get(this.endPoint.getFsURI(), conf);
      qualifiedDatasetRoot =  fs.makeQualified(this.endPoint.getDatasetPath());
    } catch (IOException e1) {
      // ignored
      qualifiedDatasetRoot = this.endPoint.getDatasetPath();
    }
  }

  @Override
  public String datasetURN() {
    return this.qualifiedDatasetRoot.toString();
  }

  @Override
  public Path datasetRoot() {
    return this.qualifiedDatasetRoot;
  }
}