/* * Copyright (c) Contributors, http://opensimulator.org/ * See CONTRIBUTORS.TXT for a full list of copyright holders. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of the OpenSim Project nor the * names of its contributors may be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS AS IS AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ using System; using System.Collections.Generic; using System.IO; using System.Reflection; using Nini.Config; using OpenSim.Framework.Console; using OpenSim.Region.Environment.Interfaces; using OpenSim.Region.Environment.Modules; using OpenSim.Region.Environment.Scenes; namespace OpenSim.Region.Environment { public class ModuleLoader { public Dictionary<string, Assembly> LoadedAssemblys = new Dictionary<string, Assembly>(); private readonly List<IRegionModule> m_loadedModules = new List<IRegionModule>(); private Dictionary<string, IRegionModule> m_loadedSharedModules = new Dictionary<string, IRegionModule>(); private readonly LogBase m_log; private readonly IConfigSource m_config; public ModuleLoader(LogBase log, IConfigSource config) { m_log = log; m_config = config; } public IRegionModule[] GetLoadedSharedModules { get { IRegionModule[] regionModules = new IRegionModule[m_loadedSharedModules.Count]; m_loadedSharedModules.Values.CopyTo(regionModules, 0); return regionModules; } } public void PickupModules(Scene scene, string moduleDir) { DirectoryInfo dir = new DirectoryInfo(moduleDir); foreach (FileInfo fileInfo in dir.GetFiles("*.dll")) { LoadRegionModules(fileInfo.FullName, scene); } } public void LoadDefaultSharedModules() { DynamicTextureModule dynamicModule = new DynamicTextureModule(); m_loadedSharedModules.Add(dynamicModule.Name, dynamicModule); ChatModule chat = new ChatModule(); m_loadedSharedModules.Add(chat.Name, chat); InstantMessageModule imMod = new InstantMessageModule(); m_loadedSharedModules.Add(imMod.Name, imMod); LoadImageURLModule loadMod = new LoadImageURLModule(); m_loadedSharedModules.Add(loadMod.Name, loadMod); AvatarFactoryModule avatarFactory = new AvatarFactoryModule(); m_loadedSharedModules.Add(avatarFactory.Name, avatarFactory); //TextureDownloadModule textureModule = new TextureDownloadModule(); //LoadedSharedModules.Add(textureModule.Name, textureModule); } public void InitialiseSharedModules(Scene scene) { foreach (IRegionModule module in m_loadedSharedModules.Values) { module.Initialise(scene, m_config); scene.AddModule(module.Name, module); //should be doing this? } } public void InitializeModule(IRegionModule module, Scene scene) { module.Initialise(scene, m_config); scene.AddModule(module.Name, module); m_loadedModules.Add(module); } /// <summary> /// Loads/initialises a Module instance that can be used by mutliple Regions /// </summary> /// <param name="dllName"></param> /// <param name="moduleName"></param> /// <param name="scene"></param> public void LoadSharedModule(string dllName, string moduleName) { IRegionModule module = LoadModule(dllName, moduleName); if (module != null) { m_loadedSharedModules.Add(module.Name, module); } } public void LoadRegionModules(string dllName, Scene scene) { IRegionModule[] modules = LoadModules(dllName); if (modules.Length > 0) { m_log.Verbose("MODULES", "Found Module Library [{0}]", dllName); foreach (IRegionModule module in modules) { if (!module.IsSharedModule) { m_log.Verbose("MODULES", " [{0}]: Initializing.", module.Name); InitializeModule(module, scene); } } } } public void LoadRegionModule(string dllName, string moduleName, Scene scene) { IRegionModule module = LoadModule(dllName, moduleName); if (module != null) { InitializeModule(module, scene); } } /// <summary> /// Loads a external Module (if not already loaded) and creates a new instance of it. /// </summary> /// <param name="dllName"></param> /// <param name="moduleName"></param> /// <param name="scene"></param> public IRegionModule LoadModule(string dllName, string moduleName) { IRegionModule[] modules = LoadModules(dllName); foreach (IRegionModule module in modules) { if ((module != null) && (module.Name == moduleName)) { return module; } } return null; } public IRegionModule[] LoadModules(string dllName) { List<IRegionModule> modules = new List<IRegionModule>(); Assembly pluginAssembly; if (!LoadedAssemblys.TryGetValue(dllName, out pluginAssembly)) { try { pluginAssembly = Assembly.LoadFrom(dllName); LoadedAssemblys.Add(dllName, pluginAssembly); } catch (BadImageFormatException e) { m_log.Verbose("MODULES", "The file [{0}] is not a module assembly.", e.FileName); } } if (pluginAssembly != null) { foreach (Type pluginType in pluginAssembly.GetTypes()) { if (pluginType.IsPublic) { if (!pluginType.IsAbstract) { if (pluginType.GetInterface("IRegionModule") != null) { modules.Add((IRegionModule) Activator.CreateInstance(pluginType)); } } } } } return modules.ToArray(); } public void PostInitialise() { foreach (IRegionModule module in m_loadedSharedModules.Values) { module.PostInitialise(); } foreach (IRegionModule module in m_loadedModules) { module.PostInitialise(); } } public void ClearCache() { LoadedAssemblys.Clear(); } } }