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.driver;
020
021import org.apache.hadoop.yarn.client.api.AMRMClient;
022
023import javax.inject.Inject;
024import java.util.logging.Level;
025import java.util.logging.Logger;
026
027/**
028 * Side-channel to request containers from YARN using AMRMClient.ContainerRequest requests.
029 */
030public final class YarnContainerRequestHandlerImpl implements YarnContainerRequestHandler {
031  private static final Logger LOG = Logger.getLogger(YarnContainerRequestHandlerImpl.class.getName());
032
033  private final YarnContainerManager containerManager;
034
035
036  @Inject
037  YarnContainerRequestHandlerImpl(final YarnContainerManager containerManager) {
038    this.containerManager = containerManager;
039    LOG.log(Level.FINEST, "Instantiated 'YarnContainerRequestHandler'");
040  }
041
042  @Override
043  public void onContainerRequest(final AMRMClient.ContainerRequest... containerRequests) {
044    LOG.log(Level.FINEST, "Sending container requests to YarnContainerManager.");
045    this.containerManager.onContainerRequest(containerRequests);
046  }
047}