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.IO;
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25 | using System.Linq;
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26 | using System.Runtime.CompilerServices;
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27 | using HeuristicLab.Hive.Contracts.BusinessObjects;
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28 | using HeuristicLab.Hive.Slave.Communication;
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29 | using HeuristicLab.PluginInfrastructure;
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30 | using HeuristicLab.PluginInfrastructure.Manager;
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31 |
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32 | namespace HeuristicLab.Hive.Slave.Core {
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33 | public class PluginCache {
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34 |
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35 | private static PluginCache instance = null;
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36 |
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37 | public string PluginRepositoryDir { get; set; }
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38 |
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39 | private List<PluginDescription> cachedPlugins = new List<PluginDescription>();
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40 |
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41 | private PluginManager pm;
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42 |
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43 | public static PluginCache Instance {
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44 | get {
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45 | if (instance == null)
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46 | instance = new PluginCache();
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47 | return instance;
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48 | }
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49 | }
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50 |
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51 | public PluginCache() {
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52 | PluginRepositoryDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "plugins");
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53 |
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54 | this.pm = new PluginManager(PluginRepositoryDir);
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55 | DoUpdateRun();
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56 | }
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57 |
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58 | private void DoUpdateRun() {
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59 | if (!Directory.Exists(PluginRepositoryDir)) {
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60 | Directory.CreateDirectory(PluginRepositoryDir);
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61 | }
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62 | pm.DiscoverAndCheckPlugins();
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63 | cachedPlugins = new List<PluginDescription>(pm.Plugins);
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64 | }
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65 |
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66 | [MethodImpl(MethodImplOptions.Synchronized)]
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67 | public bool CopyPluginsForJob(List<HivePluginInfoDto> requests, Guid jobId) {
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68 | String targetDir = Path.Combine(PluginRepositoryDir, jobId.ToString());
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69 |
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70 | if (Directory.Exists(targetDir)) {
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71 | Directory.Delete(targetDir, true);
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72 | }
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73 |
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74 | DirectoryInfo di = Directory.CreateDirectory(targetDir);
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75 |
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76 | foreach (HivePluginInfoDto requestedPlugin in requests) {
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77 | PluginDescription pd = cachedPlugins.Where(cp =>
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78 | cp.Name == requestedPlugin.Name &&
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79 | cp.Version.Major == requestedPlugin.Version.Major &&
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80 | cp.Version.Minor == requestedPlugin.Version.Minor &&
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81 | cp.Version.Revision >= requestedPlugin.Version.Revision).
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82 | SingleOrDefault();
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83 | if (pd == null) {
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84 | return false;
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85 | }
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86 |
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87 | foreach (IPluginFile ipf in pd.Files) {
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88 | string x = targetDir + ipf.Name.Split('\\').Last();
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89 | string y = Path.Combine(targetDir, Path.GetFileName(ipf.Name));
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90 |
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91 | //File.Copy(ipf.Name, targetDir + ipf.Name.Split('\\').Last());
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92 | File.Copy(ipf.Name, Path.Combine(targetDir, Path.GetFileName(ipf.Name)));
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93 | }
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94 | }
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95 | return true;
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96 | }
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97 |
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98 | [MethodImpl(MethodImplOptions.Synchronized)]
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99 | internal void PreparePlugins(List<HivePluginInfoDto> requiredPlugins) {
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100 | Logger.Debug("Fetching plugins for job");
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101 | List<HivePluginInfoDto> localPlugins = new List<HivePluginInfoDto>();
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102 | List<HivePluginInfoDto> neededPlugins = new List<HivePluginInfoDto>();
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103 | List<HivePluginInfoDto> missingPlugins = new List<HivePluginInfoDto>();
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104 | bool found = false;
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105 |
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106 | foreach (HivePluginInfoDto info in requiredPlugins) {
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107 | //we MAY run in problems here - if there is a plugin twice in requests, there may be added two different versions of the plugin
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108 | foreach (PluginDescription cachedPlugin in cachedPlugins) {
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109 | if (info.Name.Equals(cachedPlugin.Name)) {
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110 | Logger.Debug("Found plugin " + info.Name + ", " + info.Version);
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111 | localPlugins.Add(new HivePluginInfoDto() { Id = new Guid(), Name = info.Name, Version = info.Version, Update = true });
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112 | neededPlugins.Add(info);
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113 | found = true;
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114 |
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115 | break;
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116 | }
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117 | }
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118 | if (!found) {
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119 | Logger.Debug("Plugin NOT found " + info.Name + ", " + info.Version);
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120 | missingPlugins.Add(info);
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121 | }
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122 | found = false;
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123 | }
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124 |
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125 | Logger.Debug("First run - Update the plugins in the cache");
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126 | localPlugins.AddRange(missingPlugins);
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127 | IEnumerable<CachedHivePluginInfoDto> updateablePlugins = WcfService.Instance.RequestPlugins(localPlugins);
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128 |
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129 | foreach (CachedHivePluginInfoDto updateablePlugin in updateablePlugins) {
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130 | PluginDescription pd = cachedPlugins.Where(cachedPlugin => cachedPlugin.Name.Equals(updateablePlugin.Name)).SingleOrDefault();
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131 |
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132 | if (pd != null) {
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133 | Logger.Debug("deleting old files");
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134 | foreach (IPluginFile ipf in pd.Files) {
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135 | File.Delete(ipf.Name);
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136 | }
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137 | }
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138 |
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139 | Logger.Debug("deleted old files");
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140 | Logger.Debug("creating new files");
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141 | foreach (HivePluginFile pf in updateablePlugin.PluginFiles) {
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142 | string x = PluginRepositoryDir + pf.Name.Split('\\').Last();
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143 | string y = Path.Combine(PluginRepositoryDir, Path.GetFileName(pf.Name));
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144 | File.WriteAllBytes(Path.Combine(PluginRepositoryDir, Path.GetFileName(pf.Name)), pf.BinaryFile);
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145 | }
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146 |
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147 | Logger.Debug("created new files");
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148 | DoUpdateRun();
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149 | }
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150 | }
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151 |
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152 | internal void DeletePluginsForJob(Guid id) {
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153 | try {
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154 | Logger.Debug("unloading...");
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155 | Directory.Delete(Path.Combine(PluginRepositoryDir, id.ToString()), true);
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156 | }
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157 | catch (Exception ex) {
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158 | Logger.Debug("failed while unloading " + id + " with exception " + ex);
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159 | }
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160 | }
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161 | }
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162 | } |
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