[3872] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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| 25 | using System.Text;
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| 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 28 | using HeuristicLab.Parameters;
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| 29 |
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| 30 | namespace HeuristicLab.Problems.ExternalEvaluation {
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| 31 | [Item("EvaluationServiceClient", "An RPC client that evaluates a solution.")]
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| 32 | [StorableClass]
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| 33 | public class EvaluationServiceClient : ParameterizedNamedItem, IEvaluationServiceClient {
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| 34 | public override bool CanChangeName { get { return false; } }
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| 35 | public override bool CanChangeDescription { get { return false; } }
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| 36 |
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| 37 | public IValueParameter<IEvaluationChannel> ChannelParameter {
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| 38 | get { return (IValueParameter<IEvaluationChannel>)Parameters["Channel"]; }
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| 39 | }
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| 40 |
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| 41 | private IEvaluationChannel Channel {
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| 42 | get { return ChannelParameter.Value; }
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| 43 | }
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| 44 |
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| 45 | public EvaluationServiceClient()
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| 46 | : base() {
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| 47 | Parameters.Add(new ValueParameter<IEvaluationChannel>("Channel", "The channel over which to call the remote function."));
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| 48 | }
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| 49 |
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| 50 | #region IEvaluationServiceClient Members
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| 51 |
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| 52 | public QualityMessage Evaluate(SolutionMessage solution) {
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| 53 | CheckAndOpenChannel();
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| 54 | Channel.Send(solution);
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| 55 | return (QualityMessage)Channel.Receive(QualityMessage.CreateBuilder());
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| 56 | }
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| 57 |
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| 58 | public void EvaluateAsync(SolutionMessage solution, Action<QualityMessage> callback) {
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| 59 | CheckAndOpenChannel();
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| 60 | Channel.Send(solution);
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| 61 | System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(ReceiveAsync), callback);
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| 62 | }
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| 63 |
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| 64 | #endregion
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| 65 |
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| 66 | private void CheckAndOpenChannel() {
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| 67 | if (Channel == null) throw new InvalidOperationException(Name + ": The channel is not defined.");
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| 68 | if (!Channel.IsInitialized) {
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| 69 | try {
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| 70 | Channel.Open();
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| 71 | } catch (Exception e) { // TODO: Change to specific exception
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| 72 | throw new InvalidOperationException(Name + ": The channel could not be opened.", e);
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| 73 | }
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| 74 | }
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| 75 | }
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| 76 |
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| 77 | private void ReceiveAsync(object callback) {
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| 78 | QualityMessage message = (QualityMessage)Channel.Receive(QualityMessage.CreateBuilder());
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| 79 | ((Action<QualityMessage>)callback).Invoke(message);
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| 80 | }
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| 81 | }
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| 82 | }
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