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.Linq;
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24 | using HeuristicLab.Common;
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25 | using HeuristicLab.Core;
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26 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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27 | using HeuristicLab.Optimization;
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28 | using System.Drawing;
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29 | using HeuristicLab.Collections;
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30 | using System.Collections.Generic;
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31 | using HeuristicLab.Hive.Contracts.BusinessObjects;
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32 | using System.IO;
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33 | using HeuristicLab.Persistence.Default.Xml;
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34 | using HeuristicLab.PluginInfrastructure;
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35 | using System.Reflection;
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36 | using HeuristicLab.Hive.Contracts.Interfaces;
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37 | using HeuristicLab.Hive.Contracts;
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38 | using System.Threading;
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39 | using HeuristicLab.Tracing;
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40 | using HeuristicLab.Hive.JobBase;
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41 | using System.Diagnostics;
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42 | using System.Collections;
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43 |
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44 | namespace HeuristicLab.Hive.Experiment {
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45 | /// <summary>
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46 | /// An experiment which contains multiple batch runs of algorithms.
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47 | /// </summary>
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48 | [Item(itemName, itemDescription)]
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49 | [Creatable("Testing & Analysis")]
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50 | [StorableClass]
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51 | public class HiveExperiment : NamedItem, IExecutable {
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52 | private const string itemName = "Hive Experiment";
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53 | private const string itemDescription = "An experiment which contains multiple batch runs of algorithms which are executed in the Hive.";
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54 | private const int resultPollingIntervalMs = 15000;
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55 | private const int maxSnapshotRetries = 20;
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56 | private object locker = new object();
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57 |
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58 | private System.Timers.Timer timer;
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59 | private bool pausePending, stopPending;
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60 |
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61 | [Storable]
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62 | private DateTime lastUpdateTime;
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63 |
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64 | private bool isPollingResults;
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65 | public bool IsPollingResults {
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66 | get { return isPollingResults; }
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67 | private set {
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68 | if (isPollingResults != value) {
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69 | isPollingResults = value;
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70 | OnIsPollingResultsChanged();
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71 | }
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72 | }
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73 | }
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74 |
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75 | private bool stopResultsPollingPending = false;
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76 |
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77 | private IDictionary<Guid, Thread> resultPollingThreads;
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78 |
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79 | [Storable]
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80 | private IDictionary<Guid, IOptimizer> pendingOptimizers = new Dictionary<Guid, IOptimizer>();
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81 |
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82 | [Storable]
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83 | private JobItemList jobItems;
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84 | public JobItemList JobItems {
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85 | get { return jobItems; }
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86 | }
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87 |
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88 |
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89 | [Storable]
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90 | private string serverUrl;
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91 | public string ServerUrl {
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92 | get { return serverUrl; }
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93 | set {
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94 | if (serverUrl != value) {
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95 | serverUrl = value;
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96 | OnServerUrlChanged();
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97 | }
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98 | }
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99 | }
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100 |
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101 | [Storable]
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102 | private string resourceIds;
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103 | public string ResourceIds {
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104 | get { return resourceIds; }
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105 | set {
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106 | if (resourceIds != value) {
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107 | resourceIds = value;
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108 | OnResourceIdsChanged();
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109 | }
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110 | }
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111 | }
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112 |
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113 | [Storable]
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114 | private HeuristicLab.Optimization.Experiment experiment;
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115 | public HeuristicLab.Optimization.Experiment Experiment {
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116 | get { return experiment; }
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117 | set {
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118 | if (experiment != value) {
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119 | experiment = value;
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120 | OnExperimentChanged();
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121 | }
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122 | }
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123 | }
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124 |
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125 | [Storable]
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126 | private ILog log;
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127 | public ILog Log {
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128 | get { return log; }
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129 | }
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130 |
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131 | [StorableConstructor]
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132 | public HiveExperiment(bool deserializing)
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133 | : base(deserializing) {
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134 | this.resultPollingThreads = new Dictionary<Guid, Thread>();
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135 | jobItems = new JobItemList();
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136 | }
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137 |
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138 | public HiveExperiment()
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139 | : base(itemName, itemDescription) {
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140 | this.ServerUrl = HeuristicLab.Hive.Experiment.Properties.Settings.Default.HiveServerUrl;
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141 | this.ResourceIds = HeuristicLab.Hive.Experiment.Properties.Settings.Default.ResourceIds;
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142 | this.log = new Log();
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143 | pausePending = stopPending = false;
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144 | jobItems = new JobItemList();
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145 | isPollingResults = false;
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146 | resultPollingThreads = new Dictionary<Guid, Thread>();
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147 | InitTimer();
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148 | }
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149 |
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150 | public override IDeepCloneable Clone(Cloner cloner) {
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151 | LogMessage("I am beeing cloned");
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152 | HiveExperiment clone = (HiveExperiment)base.Clone(cloner);
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153 | clone.resourceIds = this.resourceIds;
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154 | clone.serverUrl = this.serverUrl;
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155 | clone.experiment = (HeuristicLab.Optimization.Experiment)cloner.Clone(experiment);
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156 | clone.executionState = this.executionState;
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157 | clone.executionTime = this.executionTime;
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158 | clone.pendingOptimizers = new Dictionary<Guid, IOptimizer>();
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159 | foreach (var pair in this.pendingOptimizers)
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160 | clone.pendingOptimizers[pair.Key] = (IOptimizer)cloner.Clone(pair.Value);
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161 | clone.log = (ILog)cloner.Clone(log);
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162 | clone.stopPending = this.stopPending;
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163 | clone.pausePending = this.pausePending;
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164 | clone.jobItems = (JobItemList)cloner.Clone(jobItems);
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165 | clone.lastUpdateTime = this.lastUpdateTime;
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166 | clone.isPollingResults = this.isPollingResults;
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167 | return clone;
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168 | }
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169 |
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170 | [StorableHook(HookType.AfterDeserialization)]
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171 | private void AfterDeserialization() {
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172 | InitTimer();
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173 | this.IsPollingResults = false;
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174 | this.stopResultsPollingPending = false;
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175 | LogMessage("I was deserialized.");
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176 | }
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177 |
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178 | private void InitTimer() {
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179 | timer = new System.Timers.Timer(100);
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180 | timer.AutoReset = true;
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181 | timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);
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182 | }
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183 |
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184 | private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) {
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185 | DateTime now = DateTime.Now;
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186 | ExecutionTime += now - lastUpdateTime;
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187 | lastUpdateTime = now;
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188 | }
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189 |
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190 | public IEnumerable<string> ResourceGroups {
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191 | get {
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192 | if (!string.IsNullOrEmpty(resourceIds)) {
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193 | return resourceIds.Split(';');
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194 | } else {
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195 | return new List<string>();
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196 | }
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197 | }
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198 | }
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199 | #region IExecutable Members
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200 |
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201 | [Storable]
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202 | private Core.ExecutionState executionState;
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203 | public ExecutionState ExecutionState {
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204 | get { return executionState; }
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205 | private set {
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206 | if (executionState != value) {
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207 | executionState = value;
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208 | OnExecutionStateChanged();
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209 | }
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210 | }
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211 | }
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212 |
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213 | [Storable]
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214 | private TimeSpan executionTime;
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215 | public TimeSpan ExecutionTime {
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216 | get { return executionTime; }
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217 | private set {
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218 | if (executionTime != value) {
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219 | executionTime = value;
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220 | OnExecutionTimeChanged();
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221 | }
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222 | }
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223 | }
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224 |
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225 | public void Pause() {
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226 | throw new NotSupportedException();
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227 | }
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228 |
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229 | public void Prepare() {
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230 | if (experiment != null) {
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231 | experiment.Prepare();
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232 | this.ExecutionState = Core.ExecutionState.Prepared;
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233 | OnPrepared();
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234 | }
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235 | }
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236 |
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237 | public void Start() {
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238 | OnStarted();
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239 | lastUpdateTime = DateTime.Now;
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240 | this.ExecutionState = Core.ExecutionState.Started;
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241 | Thread t = new Thread(() => {
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242 | IExecutionEngineFacade executionEngineFacade = GetExecutionEngineFacade();
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243 |
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244 | pendingOptimizers = new Dictionary<Guid, IOptimizer>();
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245 | IEnumerable<string> groups = ResourceGroups;
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246 |
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247 | foreach (IOptimizer optimizer in GetOptimizers(false)) {
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248 | SerializedJob serializedJob = CreateSerializedJob(optimizer);
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249 | ResponseObject<JobDto> response = executionEngineFacade.AddJobWithGroupStrings(serializedJob, groups);
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250 | pendingOptimizers.Add(response.Obj.Id, optimizer);
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251 |
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252 | JobItem jobItem = new JobItem() {
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253 | JobDto = response.Obj,
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254 | LatestSnapshot = new ResponseObject<SerializedJob>() {
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255 | Obj = serializedJob,
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256 | StatusMessage = "Initial Snapshot",
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257 | Success = true
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258 | }
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259 | };
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260 | jobItems.Add(jobItem);
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261 | jobItem.LogMessage("Job sent to Hive");
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262 |
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263 | LogMessage("Sent job to Hive (jobId: " + response.Obj.Id + ")");
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264 | }
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265 |
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266 | // start results polling after sending sending the jobs to the server (to avoid race conflicts at the optimizers-collection)
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267 | StartResultPolling();
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268 | });
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269 | t.Start();
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270 | }
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271 |
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272 | private void CreateResultPollingThreads() {
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273 | foreach(JobItem jobItem in JobItems) {
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274 | resultPollingThreads.Add(jobItem.JobDto.Id, CreateResultPollingThread(jobItem.JobDto));
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275 | }
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276 | }
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277 |
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278 | public void StartResultPolling() {
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279 | this.stopResultsPollingPending = false;
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280 | CreateResultPollingThreads();
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281 | foreach (Thread pollingThread in resultPollingThreads.Values) {
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282 | pollingThread.Start();
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283 | }
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284 | this.IsPollingResults = true;
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285 | }
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286 |
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287 | public void StopResultPolling() {
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288 | this.stopResultsPollingPending = true;
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289 | foreach (Thread pollingThread in resultPollingThreads.Values) {
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290 | pollingThread.Interrupt();
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291 | }
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292 | this.stopResultsPollingPending = false;
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293 | }
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294 |
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295 | private JobItem GetJobItemById(Guid jobId) {
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296 | return jobItems.Single(x => x.JobDto.Id == jobId);
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297 | }
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298 |
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299 | /// <summary>
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300 | /// Returns all optimizers in the current Experiment
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301 | /// </summary>
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302 | /// <param name="flatout">if false only top level optimizers are returned, if true the optimizer-tree is flatted</param>
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303 | /// <returns></returns>
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304 | private IEnumerable<IOptimizer> GetOptimizers(bool flatout) {
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305 | if (!flatout) {
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306 | return experiment.Optimizers;
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307 | } else {
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308 | throw new NotImplementedException();
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309 | }
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310 | }
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311 |
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312 | private void ReplaceOptimizer(IOptimizer originalOptimizer, IOptimizer newOptimizer) {
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313 | lock (locker) {
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314 | int originalOptimizerIndex = experiment.Optimizers.IndexOf(originalOptimizer);
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315 | experiment.Optimizers[originalOptimizerIndex] = newOptimizer;
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316 | }
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317 | }
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318 |
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319 | public void Stop() {
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320 | foreach(JobItem jobItem in jobItems) {
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321 | AbortJob(jobItem.JobDto.Id);
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322 | }
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323 | }
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324 |
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325 | public void AbortJob(Guid jobId) {
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326 | IExecutionEngineFacade executionEngineFacade = GetExecutionEngineFacade();
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327 | executionEngineFacade.AbortJob(jobId);
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328 | resultPollingThreads[jobId].Interrupt();
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329 | GetJobItemById(jobId).LogMessage("Aborting Job");
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330 | }
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331 | #endregion
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332 |
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333 | private IExecutionEngineFacade GetExecutionEngineFacade() {
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334 | return ServiceLocator.CreateExecutionEngineFacade(ServerUrl);
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335 | }
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336 |
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337 | private SerializedJob CreateSerializedJob(IOptimizer optimizer) {
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338 | IJob job = new OptimizerJob() {
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339 | Optimizer = optimizer
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340 | };
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341 |
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342 | // serialize job
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343 | MemoryStream memStream = new MemoryStream();
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344 | XmlGenerator.Serialize(job, memStream);
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345 | byte[] jobByteArray = memStream.ToArray();
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346 | memStream.Dispose();
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347 |
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348 | // find out which which plugins are needed for the given object
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349 | List<HivePluginInfoDto> pluginsNeeded = (
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350 | from p in GetDeclaringPlugins(optimizer.GetType())
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351 | select new HivePluginInfoDto() {
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352 | Name = p.Name,
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353 | Version = p.Version
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354 | }).ToList();
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355 |
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356 | JobDto jobDto = new JobDto() {
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357 | CoresNeeded = 1, // [chn] how to determine real cores needed?
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358 | PluginsNeeded = pluginsNeeded,
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359 | State = State.Offline,
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360 | MemoryNeeded = 0,
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361 | UserId = Guid.Empty // [chn] set real userid here!
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362 | };
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363 |
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364 | SerializedJob serializedJob = new SerializedJob() {
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365 | JobInfo = jobDto,
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366 | SerializedJobData = jobByteArray
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367 | };
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368 |
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369 | return serializedJob;
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370 | }
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371 |
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372 | private Thread CreateResultPollingThread(JobDto job) {
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373 | return new Thread(() => {
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374 | try {
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375 | GetJobItemById(job.Id).LogMessage("Starting job results polling");
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376 | IExecutionEngineFacade executionEngineFacade = GetExecutionEngineFacade();
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377 | IJob restoredObject = null;
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378 |
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379 | do {
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380 | Thread.Sleep(resultPollingIntervalMs);
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381 | if (stopPending || !this.IsPollingResults) {
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382 | return;
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383 | }
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384 |
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385 | ResponseObject<JobDto> response = executionEngineFacade.GetJobById(job.Id);
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386 | LogMessage("Response: " + response.StatusMessage + " (jobId: " + job.Id + ")");
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387 | GetJobItemById(job.Id).LogMessage("Response: " + response.StatusMessage);
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388 |
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389 | if (response.Obj != null) {
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390 | UpdateJobItem(response.Obj);
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391 | }
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392 |
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393 | // loop while
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394 | // 1. the user doesn't request an abort
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395 | // 2. there is a problem with server communication (success==false)
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396 | // 3. no result for the job is available yet (response.Obj==null)
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397 | // 4. the result that we get from the server is a snapshot and not the final result
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398 | if (response.Success && response.Obj != null && response.Obj.State == State.Finished) {
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399 | ResponseObject<SerializedJob> jobResponse = executionEngineFacade.GetLastSerializedResult(job.Id, false, false);
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400 | restoredObject = XmlParser.Deserialize<IJob>(new MemoryStream(jobResponse.Obj.SerializedJobData));
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401 | UpdateSnapshot(jobResponse);
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402 | }
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403 | } while (restoredObject == null || restoredObject.ExecutionState != Core.ExecutionState.Stopped);
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404 |
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405 | LogMessage("Job finished (jobId: " + job.Id + ")");
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406 | GetJobItemById(job.Id).LogMessage("Job finished");
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407 | // job retrieved... replace the existing optimizers with the finished one
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408 | IOptimizer originalOptimizer = pendingOptimizers[job.Id];
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409 | IOptimizer restoredOptimizer = ((OptimizerJob)restoredObject).Optimizer;
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410 |
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411 | ReplaceOptimizer(originalOptimizer, restoredOptimizer);
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412 | pendingOptimizers.Remove(job.Id);
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413 |
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414 | if (pendingOptimizers.Count == 0) {
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415 | // finished
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416 | this.ExecutionState = Core.ExecutionState.Stopped;
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417 | OnStopped();
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418 | }
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419 | } catch (ThreadInterruptedException exception) {
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420 |
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421 | } finally {
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422 | GetJobItemById(job.Id).LogMessage("ResultsPolling Thread stopped");
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423 | resultPollingThreads.Remove(job.Id);
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424 | if (resultPollingThreads.Count == 0) {
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425 | IsPollingResults = false;
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426 | }
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427 | }
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428 | });
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429 | }
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430 |
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431 | private void UpdateJobItem(JobDto jobDto) {
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432 | JobItem jobItem = jobItems.Single(x => x.JobDto.Id == jobDto.Id);
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433 | jobItem.JobDto = jobDto;
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434 | }
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435 |
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436 | private void UpdateSnapshot(ResponseObject<SerializedJob> response) {
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437 | JobItem jobItem = jobItems.Single(x => x.JobDto.Id == response.Obj.JobInfo.Id);
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438 | jobItem.LatestSnapshot = response;
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439 | }
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440 |
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441 | private void LogMessage(string message) {
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442 | // HeuristicLab.Log is not Thread-Safe, so lock every call
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443 | lock (locker) {
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444 | log.LogMessage(message);
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445 | }
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446 | }
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447 |
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448 | #region Required Plugin Search
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449 | /// <summary>
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450 | /// Returns a list of plugins in which the type itself and all members
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451 | /// of the type are declared. Objectgraph is searched recursively.
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452 | /// </summary>
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453 | private IEnumerable<IPluginDescription> GetDeclaringPlugins(Type type) {
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454 | HashSet<Type> types = new HashSet<Type>();
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455 | FindTypes(type, types, "HeuristicLab.");
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456 | return GetDeclaringPlugins(types);
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457 | }
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458 |
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459 | /// <summary>
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460 | /// Returns the plugins (including dependencies) in which the given types are declared
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461 | /// </summary>
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462 | private IEnumerable<IPluginDescription> GetDeclaringPlugins(IEnumerable<Type> types) {
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463 | HashSet<IPluginDescription> plugins = new HashSet<IPluginDescription>();
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464 | foreach (Type t in types) {
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465 | FindDeclaringPlugins(ApplicationManager.Manager.GetDeclaringPlugin(t), plugins);
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466 | }
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467 | return plugins;
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468 | }
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469 |
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470 | /// <summary>
|
---|
471 | /// Finds the dependencies of the given plugin and adds it to the plugins hashset.
|
---|
472 | /// Also searches the dependencies recursively.
|
---|
473 | /// </summary>
|
---|
474 | private void FindDeclaringPlugins(IPluginDescription plugin, HashSet<IPluginDescription> plugins) {
|
---|
475 | if (!plugins.Contains(plugin)) {
|
---|
476 | plugins.Add(plugin);
|
---|
477 | foreach (IPluginDescription dependency in plugin.Dependencies) {
|
---|
478 | FindDeclaringPlugins(dependency, plugins);
|
---|
479 | }
|
---|
480 | }
|
---|
481 | }
|
---|
482 |
|
---|
483 | /// <summary>
|
---|
484 | /// Recursively finds all types used in type which are in a namespace which starts with namespaceStart
|
---|
485 | /// Be aware that search is not performed on attributes
|
---|
486 | /// </summary>
|
---|
487 | /// <param name="type">the type to be searched</param>
|
---|
488 | /// <param name="types">found types will be stored there, needed in order to avoid duplicates</param>
|
---|
489 | /// <param name="namespaceStart">only types from namespaces which start with this will be searched and added</param>
|
---|
490 | private void FindTypes(Type type, HashSet<Type> types, string namespaceStart) {
|
---|
491 | if (!types.Contains(type) && type.Namespace.StartsWith(namespaceStart)) {
|
---|
492 | types.Add(type);
|
---|
493 |
|
---|
494 | // constructors
|
---|
495 | foreach (ConstructorInfo info in type.GetConstructors()) {
|
---|
496 | foreach (ParameterInfo paramInfo in info.GetParameters()) {
|
---|
497 | FindTypes(paramInfo.ParameterType, types, namespaceStart);
|
---|
498 | }
|
---|
499 | }
|
---|
500 |
|
---|
501 | // interfaces
|
---|
502 | foreach (Type t in type.GetInterfaces()) {
|
---|
503 | FindTypes(t, types, namespaceStart);
|
---|
504 | }
|
---|
505 |
|
---|
506 | // events
|
---|
507 | foreach (EventInfo info in type.GetEvents()) {
|
---|
508 | FindTypes(info.EventHandlerType, types, namespaceStart);
|
---|
509 | FindTypes(info.DeclaringType, types, namespaceStart);
|
---|
510 | }
|
---|
511 |
|
---|
512 | // properties
|
---|
513 | foreach (PropertyInfo info in type.GetProperties()) {
|
---|
514 | FindTypes(info.PropertyType, types, namespaceStart);
|
---|
515 | }
|
---|
516 |
|
---|
517 | // fields
|
---|
518 | foreach (FieldInfo info in type.GetFields()) {
|
---|
519 | FindTypes(info.FieldType, types, namespaceStart);
|
---|
520 | }
|
---|
521 |
|
---|
522 | // methods
|
---|
523 | foreach (MethodInfo info in type.GetMethods()) {
|
---|
524 | foreach (ParameterInfo paramInfo in info.GetParameters()) {
|
---|
525 | FindTypes(paramInfo.ParameterType, types, namespaceStart);
|
---|
526 | }
|
---|
527 | FindTypes(info.ReturnType, types, namespaceStart);
|
---|
528 | }
|
---|
529 | }
|
---|
530 | }
|
---|
531 | #endregion
|
---|
532 |
|
---|
533 | #region Eventhandler
|
---|
534 |
|
---|
535 | public event EventHandler ExecutionTimeChanged;
|
---|
536 | private void OnExecutionTimeChanged() {
|
---|
537 | EventHandler handler = ExecutionTimeChanged;
|
---|
538 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
539 | }
|
---|
540 |
|
---|
541 | public event EventHandler ExecutionStateChanged;
|
---|
542 | private void OnExecutionStateChanged() {
|
---|
543 | LogMessage("ExecutionState changed to " + executionState.ToString());
|
---|
544 | EventHandler handler = ExecutionStateChanged;
|
---|
545 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
546 | }
|
---|
547 |
|
---|
548 | public event EventHandler<EventArgs<Exception>> ExceptionOccurred;
|
---|
549 |
|
---|
550 | public event EventHandler Started;
|
---|
551 | private void OnStarted() {
|
---|
552 | LogMessage("Started");
|
---|
553 | timer.Start();
|
---|
554 | EventHandler handler = Started;
|
---|
555 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
556 | }
|
---|
557 |
|
---|
558 | public event EventHandler Stopped;
|
---|
559 | private void OnStopped() {
|
---|
560 | timer.Stop();
|
---|
561 | LogMessage("Stopped");
|
---|
562 | EventHandler handler = Stopped;
|
---|
563 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
564 | }
|
---|
565 |
|
---|
566 | public event EventHandler Paused;
|
---|
567 | private void OnPaused() {
|
---|
568 | timer.Stop();
|
---|
569 | LogMessage("Paused");
|
---|
570 | EventHandler handler = Paused;
|
---|
571 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
572 | }
|
---|
573 |
|
---|
574 | public event EventHandler Prepared;
|
---|
575 | protected virtual void OnPrepared() {
|
---|
576 | LogMessage("Prepared");
|
---|
577 | EventHandler handler = Prepared;
|
---|
578 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
579 | }
|
---|
580 |
|
---|
581 | public event EventHandler ResourceIdsChanged;
|
---|
582 | protected virtual void OnResourceIdsChanged() {
|
---|
583 | EventHandler handler = ResourceIdsChanged;
|
---|
584 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
585 | }
|
---|
586 |
|
---|
587 | public event EventHandler ExperimentChanged;
|
---|
588 | protected virtual void OnExperimentChanged() {
|
---|
589 | LogMessage("Experiment changed");
|
---|
590 | EventHandler handler = ExperimentChanged;
|
---|
591 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
592 | }
|
---|
593 |
|
---|
594 | public event EventHandler ServerUrlChanged;
|
---|
595 | protected virtual void OnServerUrlChanged() {
|
---|
596 | EventHandler handler = ServerUrlChanged;
|
---|
597 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
598 | }
|
---|
599 |
|
---|
600 | public event EventHandler IsResultsPollingChanged;
|
---|
601 | private void OnIsPollingResultsChanged() {
|
---|
602 | if (this.IsPollingResults) {
|
---|
603 | LogMessage("Results Polling Started");
|
---|
604 | timer.Start();
|
---|
605 | } else {
|
---|
606 | LogMessage("Results Polling Stopped");
|
---|
607 | timer.Stop();
|
---|
608 | }
|
---|
609 | EventHandler handler = IsResultsPollingChanged;
|
---|
610 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
611 | }
|
---|
612 | #endregion
|
---|
613 | }
|
---|
614 | }
|
---|