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.driver.evaluator;
020
021import org.apache.reef.annotations.Provided;
022import org.apache.reef.annotations.audience.DriverSide;
023import org.apache.reef.annotations.audience.Public;
024import org.apache.reef.runtime.common.driver.EvaluatorRequestorImpl;
025
026/**
027 * Interface through which Evaluators can be requested.
028 */
029@Public
030@DriverSide
031@Provided
032public interface EvaluatorRequestor {
033
034  /**
035   * Submit the request for new evaluator.
036   * The response will surface in the AllocatedEvaluator message handler.
037   */
038  void submit(final EvaluatorRequest req);
039
040  /**
041   * Get a new Builder for the evaluator with fluid interface.
042   * @return Builder for the evaluator
043   */
044  EvaluatorRequestorImpl.Builder newRequest();
045}