root / trunk / Pithos.Core / Agents / IdleBatch.cs @ dccd340f
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#region |
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/* ----------------------------------------------------------------------- |
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* <copyright file="IdleBatch.cs" company="GRNet"> |
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* |
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* Copyright 2011-2012 GRNET S.A. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* |
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* The views and conclusions contained in the software and |
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* documentation are those of the authors and should not be |
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* interpreted as representing official policies, either expressed |
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* or implied, of GRNET S.A. |
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* </copyright> |
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* ----------------------------------------------------------------------- |
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*/ |
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#endregion |
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|
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using System.Reflection; |
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using System.Threading; |
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using System.Threading.Tasks.Dataflow; |
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using System; |
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using log4net; |
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|
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namespace Pithos.Core.Agents |
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{ |
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|
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/// <summary> |
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/// Calls a callback function if an idle timeout expires after the last post |
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/// </summary> |
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public class IdleBatch<T> |
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{ |
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private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
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|
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readonly Timer _triggerTimer; |
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|
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private readonly BatchBlock<T> _batchBlock; |
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private readonly TransformBlock<T, T> _timerBlock; |
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private readonly ActionBlock<T[]> _processBlock; |
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|
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private readonly int _timeOut; |
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|
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public IdleBatch(int idleTimeout, Action<T[]> action) |
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{ |
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_timeOut = idleTimeout; |
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_timerBlock = new TransformBlock<T, T>(t => |
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{ |
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_triggerTimer.Change(_timeOut, Timeout.Infinite); |
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return t; |
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}); |
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_batchBlock = new BatchBlock<T>(9999); |
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_processBlock = new ActionBlock<T[]>(action); |
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|
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_timerBlock.LinkTo(_batchBlock); |
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_batchBlock.LinkTo(_processBlock); |
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|
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_timerBlock.Completion.ContinueWith(_ => _batchBlock.Complete()); |
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_batchBlock.Completion.ContinueWith(_ => _processBlock.Complete()); |
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|
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_triggerTimer = new Timer(_ => _batchBlock.TriggerBatch()); |
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} |
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|
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public void Post(T input) |
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{ |
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_timerBlock.Post(input); |
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} |
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|
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public void ForceTrigger() |
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{ |
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_batchBlock.TriggerBatch(); |
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_timerBlock.Complete(); |
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_processBlock.Completion.Wait(); |
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} |
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} |
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|
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} |