source: misc/tools/ExternalEvaluation/CSharp/ExternalEvaluation.Service/PollService.cs @ 16871

Last change on this file since 16871 was 16871, checked in by abeham, 3 years ago

updated csharp library to reflect changes in proto file made some time ago

File size: 2.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23
24namespace HeuristicLab.Problems.ExternalEvaluation.Service {
25  public class PollService : Service {
26    private BlockingQueue<SolutionMessage> messageQueue;
27
28    public PollService(IListenerFactory driverFactory)
29      : base(driverFactory) {
30      messageQueue = new BlockingQueue<SolutionMessage>(int.MaxValue);
31    }
32
33    public override void Stop() {
34      messageQueue.Close();
35      base.Stop();
36    }
37
38    public SolutionMessage GetSolution() {
39      try {
40        return messageQueue.Dequeue();
41      } catch (QueueClosedException) { }
42      return null;
43    }
44
45    public QualityMessage.Builder PrepareQualityMessage(SolutionMessage msg, double quality) {
46      SingleObjectiveQualityMessage qmsg = SingleObjectiveQualityMessage.CreateBuilder()
47        .SetQuality(quality)
48        .Build();
49      QualityMessage.Builder qualityMessageBuilder = QualityMessage.CreateBuilder();
50      qualityMessageBuilder.SetSolutionId(msg.SolutionId)
51                           .SetType(QualityMessage.Types.Type.SingleObjectiveQualityMessage)
52                           .SetExtension(SingleObjectiveQualityMessage.QualityMessage_, qmsg);
53      return qualityMessageBuilder;
54    }
55
56    public void SendQualityMessage(SolutionMessage sMsg, QualityMessage qMsg) {
57      Send(qMsg, sMsg);
58    }
59
60    public void SendQuality(SolutionMessage msg, double quality) {
61      var answer = PrepareQualityMessage(msg, quality);
62      Send(answer.Build(), msg);
63    }
64
65    public event EventHandler SolutionProduced;
66
67    protected override void OnSolutionProduced(SolutionMessage msg, IChannel channel) {
68      base.OnSolutionProduced(msg, channel);
69      try {
70        messageQueue.Enqueue(msg);
71      } catch (QueueClosedException) {
72        return;
73      }
74      EventHandler handler = SolutionProduced;
75      if (handler != null) handler(this, EventArgs.Empty);
76    }
77  }
78}
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