001/*
002 * Copyright (c) 2016-2017 Chris K Wensel <chris@wensel.net>. All Rights Reserved.
003 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved.
004 *
005 * Project and contact information: http://www.cascading.org/
006 *
007 * This file is part of the Cascading project.
008 *
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *     http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 */
021
022package cascading.management;
023
024import java.util.Collection;
025import java.util.List;
026import java.util.concurrent.Callable;
027import java.util.concurrent.Future;
028import java.util.concurrent.TimeUnit;
029
030/**
031 * The interface UnitOfWorkSpawnStrategy is a strategy for allowing pluggable thread management services into
032 * any {@link UnitOfWork} class.
033 * <p>
034 * The default strategy is {@link UnitOfWorkExecutorStrategy}.
035 *
036 * @see UnitOfWork
037 * @see cascading.flow.Flow
038 * @see cascading.cascade.Cascade
039 */
040public interface UnitOfWorkSpawnStrategy
041  {
042  List<Future<Throwable>> start( UnitOfWork unitOfWork, int maxConcurrentThreads, Collection<Callable<Throwable>> values ) throws InterruptedException;
043
044  boolean isCompleted( UnitOfWork unitOfWork );
045
046  void complete( UnitOfWork unitOfWork, int duration, TimeUnit unit ) throws InterruptedException;
047  }