lang/cs/Org.Apache.REEF.IMRU.Examples/PipelinedBroadcastReduce/BroadcastReceiverReduceSenderMapFunction.cs

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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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>
    /// Map function for integer array broadcast and reduce
    /// </summary>
    internal sealed class BroadcastReceiverReduceSenderMapFunction : IMapFunction<int[], int[]>
    {
        private static readonly Logger Logger = Logger.GetLogger(typeof(BroadcastReceiverReduceSenderMapFunction));

        private int _iterations;

        [Inject]
        private BroadcastReceiverReduceSenderMapFunction()
        {
        }

        /// <summary>
        /// Map function
        /// </summary>
        /// <param name="mapInput">integer array</param>
        /// <returns>The same integer array</returns>
        int[] IMapFunction<int[], int[]>.Map(int[] mapInput)
        {
            _iterations++;

            Logger.Log(Level.Info, string.Format("Received value {0}", mapInput[0]));

            if (mapInput[0] != _iterations)
            {
                Exceptions.Throw(new Exception("Expected value in mappers different from actual value"), Logger);
            }

            return mapInput;
        }
    }
}