[2481] | 1 | #region License Information
|
---|
| 2 | /* HeuristicLab
|
---|
| 3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
|
---|
| 4 | *
|
---|
| 5 | * This file is part of HeuristicLab.
|
---|
| 6 | *
|
---|
| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
|
---|
| 8 | * it under the terms of the GNU General Public License as published by
|
---|
| 9 | * the Free Software Foundation, either version 3 of the License, or
|
---|
| 10 | * (at your option) any later version.
|
---|
| 11 | *
|
---|
| 12 | * HeuristicLab is distributed in the hope that it will be useful,
|
---|
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 15 | * GNU General Public License for more details.
|
---|
| 16 | *
|
---|
| 17 | * You should have received a copy of the GNU General Public License
|
---|
| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
|
---|
| 19 | */
|
---|
| 20 | #endregion
|
---|
| 21 |
|
---|
| 22 | using System;
|
---|
| 23 | using System.Collections.Generic;
|
---|
| 24 | using System.Security.Policy;
|
---|
| 25 | using System.Reflection;
|
---|
| 26 | using System.Diagnostics;
|
---|
| 27 | using System.Security.Permissions;
|
---|
| 28 | using System.Security;
|
---|
[2488] | 29 | using System.Linq;
|
---|
[2495] | 30 | using System.IO;
|
---|
[2481] | 31 |
|
---|
| 32 | namespace HeuristicLab.PluginInfrastructure.Manager {
|
---|
| 33 |
|
---|
[2489] | 34 | public class DefaultApplicationManager : MarshalByRefObject, IApplicationManager {
|
---|
| 35 | internal event EventHandler<PluginInfrastructureEventArgs> PluginLoaded;
|
---|
| 36 | // cache for the AssemblyResolveEvent
|
---|
| 37 | // which must be handled when assemblies are loaded dynamically after the application start
|
---|
| 38 | private Dictionary<string, Assembly> loadedAssemblies;
|
---|
| 39 |
|
---|
[2488] | 40 | private List<IPluginDescription> plugins;
|
---|
[2481] | 41 | /// <summary>
|
---|
[2488] | 42 | /// Gets all plugins.
|
---|
[2481] | 43 | /// </summary>
|
---|
[2488] | 44 | public IEnumerable<IPluginDescription> Plugins {
|
---|
| 45 | get { return plugins; }
|
---|
[2497] | 46 | internal set { plugins = new List<IPluginDescription>(value); }
|
---|
[2488] | 47 | }
|
---|
[2481] | 48 |
|
---|
[2488] | 49 | private List<IApplicationDescription> applications;
|
---|
| 50 | /// <summary>
|
---|
| 51 | /// Gets all installed applications.
|
---|
| 52 | /// </summary>
|
---|
| 53 | public IEnumerable<IApplicationDescription> Applications {
|
---|
| 54 | get { return applications; }
|
---|
[2481] | 55 | }
|
---|
| 56 |
|
---|
[2489] | 57 | public DefaultApplicationManager()
|
---|
| 58 | : base() {
|
---|
| 59 | loadedAssemblies = new Dictionary<string, Assembly>();
|
---|
| 60 | // needed for the special case when assemblies are loaded dynamically via LoadAssemblies()
|
---|
| 61 | AppDomain.CurrentDomain.AssemblyResolve += (sender, args) => {
|
---|
| 62 | if (loadedAssemblies.ContainsKey(args.Name)) {
|
---|
| 63 | return loadedAssemblies[args.Name];
|
---|
| 64 | }
|
---|
| 65 | return null;
|
---|
| 66 | };
|
---|
| 67 | }
|
---|
[2488] | 68 |
|
---|
| 69 | internal void PrepareApplicationDomain(IEnumerable<IApplicationDescription> apps, IEnumerable<IPluginDescription> plugins) {
|
---|
| 70 | this.plugins = new List<IPluginDescription>(plugins);
|
---|
| 71 | this.applications = new List<IApplicationDescription>(apps);
|
---|
| 72 | PluginInfrastructure.ApplicationManager.RegisterApplicationManager(this);
|
---|
| 73 | LoadPlugins(plugins);
|
---|
[2481] | 74 | }
|
---|
| 75 |
|
---|
[2488] | 76 | private void LoadPlugins(IEnumerable<IPluginDescription> plugins) {
|
---|
| 77 | // load all loadable plugins (all dependencies available) into the execution context
|
---|
| 78 | foreach (var desc in PluginDescriptionIterator.IterateInDependencyOrder(plugins.Where(x => x.PluginState != PluginState.Disabled))) {
|
---|
[2495] | 79 | foreach (string assembly in desc.Assemblies) {
|
---|
| 80 | var asm = Assembly.LoadFrom(assembly);
|
---|
| 81 |
|
---|
| 82 | // instantiate and load all plugins in this assembly
|
---|
| 83 | foreach (var plugin in GetInstances<IPlugin>(asm)) {
|
---|
| 84 | plugin.OnLoad();
|
---|
| 85 | }
|
---|
[2488] | 86 | }
|
---|
[2497] | 87 | FirePluginLoaded(desc);
|
---|
[2488] | 88 | desc.Load();
|
---|
| 89 | }
|
---|
| 90 | }
|
---|
[2481] | 91 |
|
---|
[2488] | 92 | internal void Run(IApplicationDescription appInfo) {
|
---|
| 93 | IApplication runnablePlugin = (IApplication)Activator.CreateInstance(appInfo.DeclaringAssemblyName, appInfo.DeclaringTypeName).Unwrap();
|
---|
| 94 | try {
|
---|
| 95 | runnablePlugin.Run();
|
---|
[2481] | 96 | }
|
---|
[2488] | 97 | catch (Exception e) {
|
---|
| 98 | throw new Exception(String.Format(
|
---|
| 99 | "Unexpected exception caught: \"{0}\"\r\n" +
|
---|
| 100 | "Type: {1}\r\n" +
|
---|
| 101 | "Plugin {2}:\r\n{3}",
|
---|
| 102 | e.Message,
|
---|
| 103 | e.GetType().FullName,
|
---|
| 104 | appInfo.Name,
|
---|
| 105 | e.ToString()));
|
---|
| 106 | }
|
---|
[2481] | 107 | }
|
---|
[2488] | 108 |
|
---|
| 109 | /// <summary>
|
---|
[2489] | 110 | /// Loads assemblies dynamically from a byte array
|
---|
| 111 | /// </summary>
|
---|
| 112 | /// <param name="plugins">bytearray of all assemblies that should be loaded</param>
|
---|
| 113 | public void LoadAssemblies(IEnumerable<byte[]> assemblies) {
|
---|
| 114 | foreach (byte[] asm in assemblies) {
|
---|
| 115 | Assembly loadedAsm = Assembly.Load(asm);
|
---|
| 116 | RegisterLoadedAssembly(loadedAsm);
|
---|
| 117 | }
|
---|
| 118 | }
|
---|
| 119 |
|
---|
| 120 | // register assembly in the assembly cache for the AssemblyResolveEvent
|
---|
| 121 | private void RegisterLoadedAssembly(Assembly asm) {
|
---|
| 122 | loadedAssemblies.Add(asm.FullName, asm);
|
---|
| 123 | loadedAssemblies.Add(asm.GetName().Name, asm); // add short name
|
---|
| 124 | }
|
---|
| 125 |
|
---|
| 126 | /// <summary>
|
---|
[2488] | 127 | /// Creates an instance of all types that are subtypes or the same type of the specified type and declared in <paramref name="plugin"/>
|
---|
| 128 | /// </summary>
|
---|
| 129 | /// <typeparam name="T">Most general type.</typeparam>
|
---|
| 130 | /// <returns>Enumerable of the created instances.</returns>
|
---|
| 131 | public IEnumerable<T> GetInstances<T>(IPluginDescription plugin) where T : class {
|
---|
| 132 | return from t in GetTypes(typeof(T), plugin)
|
---|
| 133 | where !t.IsAbstract && !t.IsInterface && !t.HasElementType
|
---|
| 134 | select (T)Activator.CreateInstance(t);
|
---|
| 135 | }
|
---|
| 136 | /// <summary>
|
---|
[2495] | 137 | /// Creates an instance of all types declared in assembly <param name="asm"/> that are subtypes or the same type of the specified type and declared in <paramref name="plugin"/>
|
---|
| 138 | /// </summary>
|
---|
| 139 | /// <typeparam name="T">Most general type.</typeparam>
|
---|
| 140 | /// <param name="asm">Declaring assembly.</param>
|
---|
| 141 | /// <returns>Enumerable of the created instances.</returns>
|
---|
| 142 | public IEnumerable<T> GetInstances<T>(Assembly asm) where T : class {
|
---|
| 143 | return from t in GetTypes(typeof(T), asm)
|
---|
| 144 | where !t.IsAbstract && !t.IsInterface && !t.HasElementType
|
---|
| 145 | select (T)Activator.CreateInstance(t);
|
---|
| 146 | }
|
---|
| 147 | /// <summary>
|
---|
[2488] | 148 | /// Creates an instance of all types that are subtypes or the same type of the specified type
|
---|
| 149 | /// </summary>
|
---|
| 150 | /// <typeparam name="T">Most general type.</typeparam>
|
---|
| 151 | /// <returns>Enumerable of the created instances.</returns>
|
---|
| 152 | public IEnumerable<T> GetInstances<T>() where T : class {
|
---|
| 153 | return from i in GetInstances(typeof(T))
|
---|
| 154 | select (T)i;
|
---|
| 155 | }
|
---|
| 156 |
|
---|
| 157 | /// <summary>
|
---|
| 158 | /// Creates an instance of all types that are subtypes or the same type of the specified type
|
---|
| 159 | /// </summary>
|
---|
| 160 | /// <typeparam name="type">Most general type.</typeparam>
|
---|
| 161 | /// <returns>Enumerable of the created instances.</returns>
|
---|
| 162 | public IEnumerable<object> GetInstances(Type type) {
|
---|
| 163 | return from t in GetTypes(type)
|
---|
| 164 | where !t.IsAbstract && !t.IsInterface && !t.HasElementType
|
---|
| 165 | select Activator.CreateInstance(t);
|
---|
| 166 | }
|
---|
| 167 |
|
---|
| 168 | /// <summary>
|
---|
| 169 | /// Finds all types that are subtypes or equal to the specified type.
|
---|
| 170 | /// </summary>
|
---|
| 171 | /// <param name="type">Most general type for which to find matching types.</param>
|
---|
| 172 | /// <returns>Enumerable of the discovered types.</returns>
|
---|
| 173 | public IEnumerable<Type> GetTypes(Type type) {
|
---|
| 174 | return from asm in AppDomain.CurrentDomain.GetAssemblies()
|
---|
| 175 | from t in GetTypes(type, asm)
|
---|
| 176 | select t;
|
---|
| 177 | }
|
---|
| 178 |
|
---|
| 179 | /// <summary>
|
---|
| 180 | /// Finds all types that are subtypes or equal to the specified type if they are part of the given
|
---|
| 181 | /// <paramref name="plugin"/>.
|
---|
| 182 | /// </summary>
|
---|
| 183 | /// <param name="type">Most general type for which to find matching types.</param>
|
---|
| 184 | /// <param name="plugin">The plugin the subtypes must be part of.</param>
|
---|
| 185 | /// <returns>Enumerable of the discovered types.</returns>
|
---|
| 186 | public IEnumerable<Type> GetTypes(Type type, IPluginDescription pluginDescription) {
|
---|
[2495] | 187 | return from asm in AppDomain.CurrentDomain.GetAssemblies()
|
---|
| 188 | where pluginDescription.Assemblies.Any(asmPath => Path.GetFullPath(asmPath) == Path.GetFullPath(asm.Location))
|
---|
| 189 | from t in GetTypes(type, asm)
|
---|
| 190 | select t;
|
---|
[2488] | 191 | }
|
---|
| 192 |
|
---|
| 193 | /// <summary>
|
---|
| 194 | /// Gets types that are assignable (same of subtype) to the specified type only from the given assembly.
|
---|
| 195 | /// </summary>
|
---|
| 196 | /// <param name="type">Most general type we want to find.</param>
|
---|
| 197 | /// <param name="assembly">Assembly that should be searched for types.</param>
|
---|
| 198 | /// <returns>Enumerable of the discovered types.</returns>
|
---|
| 199 | private IEnumerable<Type> GetTypes(Type type, Assembly assembly) {
|
---|
| 200 | return from t in assembly.GetTypes()
|
---|
| 201 | where type.IsAssignableFrom(t)
|
---|
| 202 | select t;
|
---|
| 203 | }
|
---|
| 204 |
|
---|
[2497] | 205 | private void FirePluginLoaded(IPluginDescription plugin) {
|
---|
| 206 | if (PluginLoaded != null) PluginLoaded(this, new PluginInfrastructureEventArgs("Plugin loaded", plugin));
|
---|
[2489] | 207 | }
|
---|
[2488] | 208 |
|
---|
| 209 | // infinite lease time
|
---|
| 210 | /// <summary>
|
---|
| 211 | /// Initializes the life time service with infinite lease time.
|
---|
| 212 | /// </summary>
|
---|
| 213 | /// <returns><c>null</c>.</returns>
|
---|
| 214 | public override object InitializeLifetimeService() {
|
---|
| 215 | return null;
|
---|
| 216 | }
|
---|
[2481] | 217 | }
|
---|
| 218 | }
|
---|
[2488] | 219 |
|
---|