1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2008 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.Text;
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25 | using System.Threading;
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26 | using HeuristicLab.Hive.Contracts.Interfaces;
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27 | using HeuristicLab.Hive.Contracts;
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28 | using System.IO;
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29 | using System.IO.Compression;
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30 | using System.Xml;
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31 | using HeuristicLab.Core;
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32 | using HeuristicLab.PluginInfrastructure;
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33 | using HeuristicLab.Hive.Contracts.BusinessObjects;
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34 |
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35 | namespace HeuristicLab.Grid.HiveBridge {
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36 | public class HiveGridServerWrapper : IGridServer {
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37 | private string address;
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38 |
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39 | public HiveGridServerWrapper(string address) {
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40 | this.address = address;
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41 | }
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42 |
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43 | public JobState JobState(Guid guid) {
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44 | IExecutionEngineFacade executionEngineFacade = ServiceLocator.CreateExecutionEngineFacade(address);
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45 | ResponseObject<JobResult> response = executionEngineFacade.GetLastResult(guid, false);
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46 | if (response.Success == true &&
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47 | (response.StatusMessage == ApplicationConstants.RESPONSE_JOB_RESULT_NOT_YET_HERE ||
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48 | response.StatusMessage == ApplicationConstants.RESPONSE_JOB_REQUEST_SET ||
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49 | response.StatusMessage == ApplicationConstants.RESPONSE_JOB_REQUEST_ALLREADY_SET ||
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50 | response.StatusMessage == ApplicationConstants.RESPONSE_JOB_JOB_RESULT_SENT)) {
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51 | return HeuristicLab.Grid.JobState.Busy;
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52 | } else return HeuristicLab.Grid.JobState.Unknown;
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53 | }
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54 |
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55 | public Guid BeginExecuteEngine(byte[] engine) {
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56 | var jobObj = CreateJobObj(engine);
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57 |
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58 | IExecutionEngineFacade executionEngineFacade = ServiceLocator.CreateExecutionEngineFacade(address);
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59 | ResponseObject<HeuristicLab.Hive.Contracts.BusinessObjects.Job> res = executionEngineFacade.AddJob(jobObj);
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60 | return res.Obj.Id;
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61 | }
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62 |
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63 | public byte[] TryEndExecuteEngine(Guid guid) {
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64 | IExecutionEngineFacade executionEngineFacade = ServiceLocator.CreateExecutionEngineFacade(address);
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65 | ResponseObject<JobResult> response = executionEngineFacade.GetLastResult(guid, false);
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66 | if (response.Success && response.Obj != null) {
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67 | HeuristicLab.Hive.Engine.Job restoredJob = (HeuristicLab.Hive.Engine.Job)PersistenceManager.RestoreFromGZip(response.Obj.Result);
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68 | // Serialize the engine
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69 | MemoryStream memStream = new MemoryStream();
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70 | GZipStream stream = new GZipStream(memStream, CompressionMode.Compress, true);
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71 | XmlDocument document = PersistenceManager.CreateXmlDocument();
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72 | Dictionary<Guid, IStorable> dictionary = new Dictionary<Guid, IStorable>();
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73 | XmlNode rootNode = document.CreateElement("Root");
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74 | document.AppendChild(rootNode);
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75 | rootNode.AppendChild(PersistenceManager.Persist(restoredJob.Engine, document, dictionary));
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76 | document.Save(stream);
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77 | stream.Close();
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78 | return memStream.ToArray();
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79 | } else return null;
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80 | }
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81 |
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82 | private HeuristicLab.Hive.Contracts.BusinessObjects.Job CreateJobObj(byte[] serializedEngine) {
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83 | HeuristicLab.Hive.Contracts.BusinessObjects.Job jobObj = new HeuristicLab.Hive.Contracts.BusinessObjects.Job();
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84 |
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85 | List<HivePluginInfo> requiredPlugins = new List<HivePluginInfo>();
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86 | IEngine engine = RestoreEngine(serializedEngine, requiredPlugins);
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87 |
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88 | HeuristicLab.Hive.Engine.Job job = new HeuristicLab.Hive.Engine.Job();
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89 | job.Engine.OperatorGraph.AddOperator(engine.OperatorGraph.InitialOperator);
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90 | job.Engine.OperatorGraph.InitialOperator = engine.OperatorGraph.InitialOperator;
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91 |
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92 | // Serialize the job
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93 | MemoryStream memStream = new MemoryStream();
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94 | GZipStream stream = new GZipStream(memStream, CompressionMode.Compress, true);
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95 | XmlDocument document = PersistenceManager.CreateXmlDocument();
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96 | Dictionary<Guid, IStorable> dictionary = new Dictionary<Guid, IStorable>();
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97 | XmlNode rootNode = document.CreateElement("Root");
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98 | document.AppendChild(rootNode);
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99 | rootNode.AppendChild(PersistenceManager.Persist(job, document, dictionary));
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100 | document.Save(stream);
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101 | stream.Close();
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102 |
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103 | jobObj.SerializedJob = memStream.ToArray();
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104 | jobObj.CoresNeeded = 1;
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105 | jobObj.PluginsNeeded = requiredPlugins;
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106 | jobObj.State = HeuristicLab.Hive.Contracts.BusinessObjects.State.offline;
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107 | return jobObj;
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108 | }
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109 |
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110 | private IEngine RestoreEngine(byte[] serializedEngine, List<HivePluginInfo> requiredPlugins) {
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111 | // unzip and restore to determine the list of required plugins (NB: inefficient!)
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112 | MemoryStream memStream = new MemoryStream(serializedEngine);
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113 | GZipStream stream = new GZipStream(memStream, CompressionMode.Decompress, true);
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114 | XmlDocument document = new XmlDocument();
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115 | document.Load(stream);
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116 |
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117 | Dictionary<Guid, IStorable> dictionary = new Dictionary<Guid, IStorable>();
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118 | XmlNode rootNode = document.ChildNodes[1].ChildNodes[0];
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119 | IEngine engine = (IEngine)PersistenceManager.Restore(rootNode, dictionary);
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120 | stream.Close();
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121 |
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122 | DiscoveryService service = new DiscoveryService();
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123 | List<PluginInfo> plugins = new List<PluginInfo>();
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124 |
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125 | foreach (IStorable storeable in dictionary.Values) {
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126 | PluginInfo pluginInfo = service.GetDeclaringPlugin(storeable.GetType());
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127 | if (!plugins.Contains(pluginInfo)) {
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128 | plugins.Add(pluginInfo);
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129 | foreach (var dependency in pluginInfo.Dependencies) {
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130 | if (!plugins.Contains(dependency)) plugins.Add(dependency);
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131 | }
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132 | }
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133 | }
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134 |
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135 | foreach (PluginInfo uniquePlugin in plugins) {
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136 | HivePluginInfo pluginInfo =
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137 | new HivePluginInfo();
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138 | pluginInfo.Name = uniquePlugin.Name;
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139 | pluginInfo.Version = uniquePlugin.Version.ToString();
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140 | pluginInfo.BuildDate = uniquePlugin.BuildDate;
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141 | requiredPlugins.Add(pluginInfo);
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142 | }
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143 | return engine;
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144 | }
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145 | }
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146 | }
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