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 | using System.Threading;
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32 | using System.Reflection;
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33 |
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34 | namespace HeuristicLab.Hive.Slave.Core {
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35 | public class PluginCache {
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36 | private static object locker = new object();
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37 | public const string ConfigFileName = "Sandbox.config";
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38 |
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39 | private static PluginCache instance = null;
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40 |
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41 | public string PluginCacheDir { get; set; }
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42 | public string PluginTempBaseDir { get; set; }
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43 |
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44 | private List<PluginDescription> cachedPlugins = new List<PluginDescription>();
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45 |
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46 | private PluginManager pm;
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47 |
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48 | public static PluginCache Instance {
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49 | get {
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50 | if (instance == null)
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51 | instance = new PluginCache();
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52 | return instance;
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53 | }
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54 | }
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55 |
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56 | public string ConfigFilePath {
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57 | get {
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58 | return Path.Combine(PluginCacheDir, ConfigFileName);
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59 | }
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60 | }
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61 |
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62 | public PluginCache() {
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63 | PluginCacheDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "PluginCache");
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64 | PluginTempBaseDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "PluginTemp");
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65 |
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66 | this.pm = new PluginManager(PluginCacheDir);
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67 | DoUpdateRun();
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68 | }
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69 |
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70 | private void DoUpdateRun() {
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71 | if (!Directory.Exists(PluginCacheDir)) {
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72 | Directory.CreateDirectory(PluginCacheDir);
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73 | }
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74 | pm.DiscoverAndCheckPlugins();
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75 | cachedPlugins = new List<PluginDescription>(pm.Plugins);
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76 | }
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77 |
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78 | [MethodImpl(MethodImplOptions.Synchronized)]
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79 | public void CopyPluginsForJob(List<HivePluginInfoDto> requests, Guid jobId) {
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80 | lock (locker) {
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81 | String targetDir = Path.Combine(PluginTempBaseDir, jobId.ToString());
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82 |
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83 | if (Directory.Exists(targetDir)) {
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84 | Directory.Delete(targetDir, true);
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85 | }
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86 |
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87 | DirectoryInfo di = Directory.CreateDirectory(targetDir);
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88 |
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89 | foreach (HivePluginInfoDto requestedPlugin in requests) {
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90 | PluginDescription pd = cachedPlugins.Where(cp =>
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91 | cp.Name == requestedPlugin.Name &&
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92 | cp.Version.Major == requestedPlugin.Version.Major &&
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93 | cp.Version.Minor == requestedPlugin.Version.Minor).SingleOrDefault();
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94 | if (pd != null) {
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95 | foreach (IPluginFile ipf in pd.Files) {
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96 | File.Copy(ipf.Name, Path.Combine(targetDir, Path.GetFileName(ipf.Name)));
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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 | // copy config file
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102 | File.Copy(ConfigFilePath, Path.Combine(targetDir, ConfigFileName));
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103 |
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104 | // copy files from PluginInfrastructure, which are not declared
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105 | string baseDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
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106 | CopyFile(baseDir, targetDir, "HeuristicLab.PluginInfrastructure-3.3.dll");
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107 | CopyFile(baseDir, targetDir, "ICSharpCode.SharpZipLib.dll");
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108 | CopyFile(baseDir, targetDir, "ICSharpCode.SharpZipLib License.txt");
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109 |
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110 | // copy slave plugins, otherwise its not possible to register the UnhandledException handler to the appdomain
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111 | CopyFile(baseDir, targetDir, "HeuristicLab.Hive.Slave.Core-3.3.dll");
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112 | CopyFile(baseDir, targetDir, "HeuristicLab.Hive.Slave.Common-3.3.dll");
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113 | CopyFile(baseDir, targetDir, "HeuristicLab.Hive.Slave.Communication-3.3.dll");
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114 | CopyFile(baseDir, targetDir, "HeuristicLab.Hive.Slave.ExecutionEngine-3.3.dll");
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115 | }
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116 | }
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117 |
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118 | private void CopyFile(string baseDir, string targetDir, string fileName) {
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119 | if (!File.Exists(Path.Combine(targetDir, fileName))) File.Copy(Path.Combine(baseDir, fileName), Path.Combine(targetDir, fileName));
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120 | }
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121 |
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122 | [MethodImpl(MethodImplOptions.Synchronized)]
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123 | internal void PreparePlugins(List<HivePluginInfoDto> requiredPlugins) {
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124 | lock (locker) {
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125 | Logger.Debug("Fetching plugins for job");
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126 | List<HivePluginInfoDto> localPlugins = new List<HivePluginInfoDto>();
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127 | List<HivePluginInfoDto> missingPlugins = new List<HivePluginInfoDto>();
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128 | bool found = false;
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129 |
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130 | foreach (HivePluginInfoDto info in requiredPlugins) {
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131 | //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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132 | foreach (PluginDescription cachedPlugin in cachedPlugins) {
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133 | if (info.Name == cachedPlugin.Name && info.Version == cachedPlugin.Version) {
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134 | localPlugins.Add(new HivePluginInfoDto() { Id = new Guid(), Name = info.Name, Version = info.Version, Update = true });
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135 | found = true;
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136 |
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137 | break;
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138 | }
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139 | }
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140 | if (!found) {
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141 | Logger.Debug("Plugin NOT found " + info.Name + ", " + info.Version);
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142 | missingPlugins.Add(info);
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143 | }
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144 | found = false;
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145 | }
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146 |
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147 | Logger.Debug("First run - Update the plugins in the cache");
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148 | localPlugins.AddRange(missingPlugins);
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149 | IEnumerable<CachedHivePluginInfoDto> updateablePlugins = WcfService.Instance.RequestPlugins(missingPlugins);
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150 |
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151 | foreach (CachedHivePluginInfoDto updateablePlugin in updateablePlugins) {
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152 | PluginDescription pd = cachedPlugins.Where(cachedPlugin =>
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153 | cachedPlugin.Name == updateablePlugin.Name &&
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154 | cachedPlugin.Version.Major == updateablePlugin.Version.Major &&
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155 | cachedPlugin.Version.Minor == updateablePlugin.Version.Major).SingleOrDefault();
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156 |
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157 | if (pd != null) {
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158 | foreach (IPluginFile ipf in pd.Files) {
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159 | Logger.Debug(string.Format("deleting {0}", Path.GetFileName(ipf.Name)));
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160 | File.Delete(ipf.Name);
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161 | }
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162 | }
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163 |
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164 | foreach (HivePluginFile pf in updateablePlugin.PluginFiles) {
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165 | Logger.Debug(string.Format("writing {0}", Path.GetFileName(pf.Name)));
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166 | File.WriteAllBytes(Path.Combine(PluginCacheDir, Path.GetFileName(pf.Name)), pf.BinaryFile);
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167 | }
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168 | }
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169 |
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170 | // download config file
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171 | HivePluginFile configFile = WcfService.Instance.GetConfigurationFile();
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172 | File.WriteAllBytes(ConfigFilePath, configFile.BinaryFile);
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173 |
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174 | DoUpdateRun();
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175 | }
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176 | }
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177 |
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178 | internal void DeletePluginsForJob(Guid id) {
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179 | try {
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180 | Logger.Debug("unloading...");
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181 | int tries = 5;
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182 | while (tries > 0) {
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183 | try {
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184 | Directory.Delete(Path.Combine(PluginTempBaseDir, id.ToString()), true);
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185 | tries = 0;
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186 | }
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187 | catch {
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188 | Thread.Sleep(1000);
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189 | tries--;
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190 | if (tries == 0) throw;
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191 | }
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192 | }
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193 | }
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194 | catch (Exception ex) {
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195 | Logger.Debug("failed while unloading " + id + " with exception " + ex);
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196 | }
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197 | }
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198 |
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199 |
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200 | }
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201 | } |
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