1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 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.IO;
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25 | using System.ServiceModel.Configuration;
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26 | using System.Threading;
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27 | using DistributedGA.Core.Domain;
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28 | using DistributedGA.Core.Implementation;
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29 | using DistributedGA.Core.Interface;
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30 | using HeuristicLab.Clients.Hive;
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31 | using HeuristicLab.Common;
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32 | using HeuristicLab.Core;
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33 | using HeuristicLab.Data;
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34 | using HeuristicLab.Operators;
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35 | using HeuristicLab.Parameters;
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36 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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37 |
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38 | namespace HeuristicLab.Optimization.Operators {
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39 | [Item("P2PMigrationAnalyzer", "Migrates individuals using a P2P network.")]
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40 | [StorableClass]
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41 | public class P2PMigrationAnalyzer : SingleSuccessorOperator, IAnalyzer {
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42 | // state: messagehandler
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43 | private IMessageHandler h;
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44 |
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45 | public ILookupParameter<IntValue> MigrationIterationsParameter {
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46 | get { return (ILookupParameter<IntValue>)Parameters["MigrationIterations"]; }
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47 | }
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48 | public ILookupParameter<IRandom> RandomParameter {
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49 | get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
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50 | }
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51 | public IValueParameter<IntValue> MigrationIntervalParameter {
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52 | get { return (IValueParameter<IntValue>)Parameters["MigrationInterval"]; }
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53 | }
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54 | public IValueParameter<ILog> LogParameter {
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55 | get { return (IValueParameter<ILog>)Parameters["Log"]; }
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56 | }
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57 |
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58 | public IntValue MigrationIterations {
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59 | get { return MigrationIterationsParameter.ActualValue; }
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60 | }
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61 |
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62 | public IntValue MigrationInterval {
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63 | get { return MigrationIntervalParameter.Value; }
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64 | }
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65 |
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66 | public IRandom Random {
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67 | get { return RandomParameter.ActualValue; }
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68 | }
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69 |
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70 | [StorableConstructor]
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71 | protected P2PMigrationAnalyzer(bool deserializing) : base(deserializing) { }
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72 | protected P2PMigrationAnalyzer(P2PMigrationAnalyzer original, Cloner cloner) : base(original, cloner) { }
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73 |
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74 | public P2PMigrationAnalyzer()
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75 | : base() {
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76 | Parameters.Add(new LookupParameter<IntValue>("MigrationIterations"));
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77 | Parameters.Add(new ValueParameter<IntValue>("MigrationInterval", "", new IntValue(1)));
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78 | Parameters.Add(new ValueParameter<StringValue>("LanIpPrefix", "", new StringValue("10.")));
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79 | Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator"));
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80 | Parameters.Add(new ValueParameter<StringValue>("ContactServerURL", "", new StringValue("net.tcp://10.42.1.150:9090/DistributedGA.ContactServer/ContactService")));
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81 | Parameters.Add(new ValueParameter<StringValue>("JobGUID", "", new StringValue(Guid.NewGuid().ToString())));
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82 | Parameters.Add(new ValueParameter<ILog>("Log", "The log", new Log(1000)));
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83 | }
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84 |
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85 | public override IDeepCloneable Clone(Cloner cloner) {
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86 | return new P2PMigrationAnalyzer(this, cloner);
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87 | }
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88 |
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89 | public override void ClearState() {
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90 | base.ClearState();
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91 | h.Dispose();
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92 | h = null;
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93 | }
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94 |
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95 | public override void InitializeState() {
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96 | base.InitializeState();
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97 | // init P2P
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98 | h = new PeerNetworkMessageHandler();
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99 | var lanIpPrefix = ((StringValue)(Parameters["LanIpPrefix"].ActualValue)).Value;
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100 | var contactServerUri = ((StringValue)(Parameters["ContactServerURL"].ActualValue)).Value;
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101 | h.Init(lanIpPrefix, contactServerUri);
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102 | var peer = h.GetPeerInfo();
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103 | peer.ProblemInstance = ((StringValue)Parameters["JobGUID"].ActualValue).Value;
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104 | }
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105 |
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106 | public override IOperation Apply() {
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107 | if (MigrationIterationsParameter.ActualValue == null) {
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108 | MigrationIterationsParameter.ActualValue = new IntValue(0);
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109 | }
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110 |
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111 | if (MigrationIterations.Value % MigrationInterval.Value == 0) {
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112 |
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113 | IScope scope = ExecutionContext.Scope;
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114 | List<IScope> emigrantsList = new List<IScope>();
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115 |
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116 | // select best as emigrant
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117 | IScope emigrants = scope.SubScopes[1];
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118 | emigrantsList.Add(emigrants);
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119 |
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120 | {
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121 | // send
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122 | var message = new byte[emigrantsList.Count][];
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123 | for (int ei = 0; ei < emigrantsList.Count; ei++) {
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124 | using (var stream = new MemoryStream()) {
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125 | var emigrantScope = emigrantsList[ei];
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126 | emigrantScope.ClearParentScopes();
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127 | HeuristicLab.Persistence.Default.Xml.XmlGenerator.Serialize(emigrantScope, stream);
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128 | message[ei] = stream.GetBuffer();
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129 | }
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130 | }
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131 | h.PublishDataToNetwork(message);
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132 | }
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133 |
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134 |
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135 | {
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136 | // recieve
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137 | var message = h.GetDataFromNetwork();
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138 | for (int ei = 0; ei < message.Length; ei++) {
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139 | using (var stream = new MemoryStream(message[ei])) {
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140 | var immigrantScope = HeuristicLab.Persistence.Default.Xml.XmlParser.Deserialize<IScope>(stream);
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141 |
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142 | // replace random individual in current population
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143 | var rand = Random;
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144 | var replIdx = rand.Next(scope.SubScopes.Count);
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145 |
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146 | scope.SubScopes.RemoveAt(replIdx);
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147 | scope.SubScopes.Insert(replIdx, immigrantScope);
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148 | var log = LogParameter.Value;
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149 | double quality = 0.0;
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150 | if (immigrantScope.Variables.ContainsKey("Quality")) quality = ((DoubleValue)immigrantScope.Variables["Quality"].Value).Value;
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151 | log.LogMessage(string.Format("Recieved individual with quality {0}", quality));
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152 | }
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153 | }
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154 | }
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155 | }
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156 |
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157 | MigrationIterations.Value++;
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158 | return base.Apply();
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159 | }
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160 |
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161 | public bool EnabledByDefault { get { return false; } }
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162 | }
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163 | }
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