/* * The MIT License (MIT) * Copyright (c) 2018 Microsoft Corporation * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.microsoft.azure.cosmosdb.rx.internal; import org.apache.commons.lang3.Range; import rx.Completable; import rx.functions.Action1; import java.util.ArrayList; import java.util.List; public class ParallelAsync { static Completable forEachAsync(Range<Integer> range, int partition, Action1<Integer> func) { int partitionSize = (range.getMaximum() - range.getMinimum()) / partition; List<Completable> task = new ArrayList<>(); int startRange = range.getMinimum(); for (int i = 0; i < partition; i++) { Range<Integer> integerRange = Range.between(startRange, startRange + partitionSize); task.add(Completable.defer(() -> { for(int j = integerRange.getMinimum(); j < integerRange.getMaximum();j++) { func.call(j); } return Completable.complete(); })); startRange = startRange + partitionSize ; } return Completable.mergeDelayError(task); } }