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.common.driver;
020
021import org.apache.reef.driver.catalog.NodeDescriptor;
022import org.apache.reef.driver.catalog.RackDescriptor;
023import org.apache.reef.driver.catalog.ResourceCatalog;
024import org.apache.reef.driver.evaluator.EvaluatorRequest;
025import org.apache.reef.driver.evaluator.EvaluatorRequestor;
026import org.apache.reef.proto.DriverRuntimeProtocol;
027import org.apache.reef.runtime.common.driver.api.ResourceRequestHandler;
028import org.apache.reef.util.logging.LoggingScope;
029import org.apache.reef.util.logging.LoggingScopeFactory;
030
031import javax.inject.Inject;
032import java.util.logging.Level;
033import java.util.logging.Logger;
034
035
036/**
037 * Implementation of the EvaluatorRequestor that translates the request and hands it down to the underlying RM.
038 */
039public final class EvaluatorRequestorImpl implements EvaluatorRequestor {
040
041  private static final Logger LOG = Logger.getLogger(EvaluatorRequestorImpl.class.getName());
042
043  private final ResourceCatalog resourceCatalog;
044  private final ResourceRequestHandler resourceRequestHandler;
045  private final LoggingScopeFactory loggingScopeFactory;
046
047  /**
048   * @param resourceCatalog
049   * @param resourceRequestHandler
050   */
051  @Inject
052  public EvaluatorRequestorImpl(final ResourceCatalog resourceCatalog,
053                                final ResourceRequestHandler resourceRequestHandler,
054                                final LoggingScopeFactory loggingScopeFactory) {
055    this.resourceCatalog = resourceCatalog;
056    this.resourceRequestHandler = resourceRequestHandler;
057    this.loggingScopeFactory = loggingScopeFactory;
058  }
059
060  @Override
061  public synchronized void submit(final EvaluatorRequest req) {
062    LOG.log(Level.FINEST, "Got an EvaluatorRequest: number: {0}, memory = {1}, cores = {2}.", new Object[]{req.getNumber(), req.getMegaBytes(), req.getNumberOfCores()});
063
064    if (req.getMegaBytes() <= 0) {
065      throw new IllegalArgumentException("Given an unsupported memory size: " + req.getMegaBytes());
066    }
067    if (req.getNumberOfCores() <= 0) {
068      throw new IllegalArgumentException("Given an unsupported core number: " + req.getNumberOfCores());
069    }
070    if (req.getNumber() <= 0) {
071      throw new IllegalArgumentException("Given an unsupported number of evaluators: " + req.getNumber());
072    }
073
074    try (LoggingScope ls = loggingScopeFactory.evaluatorSubmit(req.getNumber())) {
075      final DriverRuntimeProtocol.ResourceRequestProto.Builder request = DriverRuntimeProtocol.ResourceRequestProto
076          .newBuilder()
077          .setResourceCount(req.getNumber())
078          .setVirtualCores(req.getNumberOfCores())
079          .setMemorySize(req.getMegaBytes());
080
081      final ResourceCatalog.Descriptor descriptor = req.getDescriptor();
082      if (descriptor != null) {
083        if (descriptor instanceof RackDescriptor) {
084          request.addRackName(descriptor.getName());
085        } else if (descriptor instanceof NodeDescriptor) {
086          request.addNodeName(descriptor.getName());
087        } else {
088          throw new IllegalArgumentException("Unable to operate on descriptors of type " + descriptor.getClass().getName());
089        }
090      }
091
092      this.resourceRequestHandler.onNext(request.build());
093    }
094  }
095}