| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| using System; |
| using Org.Apache.REEF.IMRU.API; |
| using Org.Apache.REEF.Tang.Annotations; |
| using Org.Apache.REEF.Utilities.Diagnostics; |
| using Org.Apache.REEF.Utilities.Logging; |
| |
| namespace Org.Apache.REEF.IMRU.Examples.PipelinedBroadcastReduce |
| { |
| /// <summary> |
| /// The Update function for integer array broadcast and reduce |
| /// </summary> |
| internal sealed class BroadcastSenderReduceReceiverUpdateFunction : IUpdateFunction<int[], int[], int[]> |
| { |
| private static readonly Logger Logger = Logger.GetLogger(typeof(BroadcastSenderReduceReceiverUpdateFunction)); |
| |
| private int _iterations; |
| private readonly int _maxIters; |
| private readonly int _dim; |
| private readonly int[] _intArr; |
| private readonly int _workers; |
| |
| [Inject] |
| private BroadcastSenderReduceReceiverUpdateFunction( |
| [Parameter(typeof(BroadcastReduceConfiguration.NumberOfIterations))] int maxIters, |
| [Parameter(typeof(BroadcastReduceConfiguration.Dimensions))] int dim, |
| [Parameter(typeof(BroadcastReduceConfiguration.NumWorkers))] int numWorkers) |
| { |
| _maxIters = maxIters; |
| _iterations = 0; |
| _dim = dim; |
| _intArr = new int[_dim]; |
| _workers = numWorkers; |
| } |
| |
| /// <summary> |
| /// Update function |
| /// </summary> |
| /// <param name="input">Input containing sum of all mappers arrays</param> |
| /// <returns>The Update Result</returns> |
| UpdateResult<int[], int[]> IUpdateFunction<int[], int[], int[]>.Update(int[] input) |
| { |
| Logger.Log(Level.Info, string.Format("Received value {0}", input[0])); |
| |
| if (input[0] != (_iterations + 1) * _workers) |
| { |
| Exceptions.Throw(new Exception("Expected input to update functon not same as actual input"), Logger); |
| } |
| |
| _iterations++; |
| |
| if (_iterations < _maxIters) |
| { |
| for (int i = 0; i < _dim; i++) |
| { |
| _intArr[i] = _iterations + 1; |
| } |
| |
| return UpdateResult<int[], int[]>.AnotherRound(_intArr); |
| } |
| |
| return UpdateResult<int[], int[]>.Done(input); |
| } |
| |
| /// <summary> |
| /// Initialize function. Sends integer array with value 1 to all mappers |
| /// </summary> |
| /// <returns>Map input</returns> |
| UpdateResult<int[], int[]> IUpdateFunction<int[], int[], int[]>.Initialize() |
| { |
| for (int i = 0; i < _dim; i++) |
| { |
| _intArr[i] = _iterations + 1; |
| } |
| |
| return UpdateResult<int[], int[]>.AnotherRound(_intArr); |
| } |
| } |
| } |