001/*
002 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved.
003 *
004 * Project and contact information: http://www.cascading.org/
005 *
006 * This file is part of the Cascading project.
007 *
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * You may obtain a copy of the License at
011 *
012 *     http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 */
020
021package cascading.management;
022
023import java.util.Collection;
024import java.util.List;
025import java.util.concurrent.Callable;
026import java.util.concurrent.Future;
027import java.util.concurrent.TimeUnit;
028
029/**
030 * The interface UnitOfWorkSpawnStrategy is a strategy for allowing pluggable thread management services into
031 * any {@link UnitOfWork} class.
032 * <p/>
033 * The default strategy is {@link UnitOfWorkExecutorStrategy}.
034 *
035 * @see UnitOfWork
036 * @see cascading.flow.Flow
037 * @see cascading.cascade.Cascade
038 */
039public interface UnitOfWorkSpawnStrategy
040  {
041  List<Future<Throwable>> start( UnitOfWork unitOfWork, int maxConcurrentThreads, Collection<Callable<Throwable>> values ) throws InterruptedException;
042
043  boolean isCompleted( UnitOfWork unitOfWork );
044
045  void complete( UnitOfWork unitOfWork, int duration, TimeUnit unit ) throws InterruptedException;
046  }