Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.runtime.yarn.util;
020
021import org.apache.hadoop.yarn.conf.YarnConfiguration;
022import org.apache.reef.runtime.yarn.driver.parameters.FileSystemUrl;
023import org.apache.reef.tang.ExternalConstructor;
024import org.apache.reef.tang.annotations.Parameter;
025
026import javax.inject.Inject;
027import java.util.logging.Level;
028import java.util.logging.Logger;
029
030/**
031 * An external constructor that creates YarnConfiguration instances.
032 */
033public final class YarnConfigurationConstructor implements ExternalConstructor<YarnConfiguration> {
034
035  private static final Logger LOG = Logger.getLogger(YarnConfigurationConstructor.class.getName());
036
037  private final String fileSystemUrl;
038
039  @Inject
040  YarnConfigurationConstructor(@Parameter(FileSystemUrl.class) final String fileSystemUrl) {
041    this.fileSystemUrl = fileSystemUrl;
042  }
043
044  @Override
045  public YarnConfiguration newInstance() {
046    YarnConfiguration yarnConfiguration = new YarnConfiguration();
047    if (!fileSystemUrl.equals(FileSystemUrl.DEFAULT_VALUE)) {
048      yarnConfiguration.set("fs.defaultFS", fileSystemUrl);
049      LOG.log(Level.INFO, "Set fileSystemUrl in YarnConfigurationConstructor: {0}", fileSystemUrl);
050    }
051    return yarnConfiguration;
052  }
053}