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using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
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>();
public List<IRegionModule> LoadedModules = new List<IRegionModule>();
public Dictionary<string, IRegionModule> LoadedSharedModules = new Dictionary<string, IRegionModule>();
private readonly LogBase m_log;
public ModuleLoader(LogBase log)
{
m_log = log;
}
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();
LoadedSharedModules.Add(dynamicModule.Name, dynamicModule);
}
public void InitialiseSharedModules(Scene scene)
{
foreach (IRegionModule module in LoadedSharedModules.Values)
{
module.Initialise(scene);
scene.AddModule(module.Name, module); //should be doing this?
}
}
private void InitializeModule(IRegionModule module, Scene scene)
{
module.Initialise(scene);
scene.AddModule(module.Name, module);
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)
{
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)
{
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.Error( "MODULES", "The file [{0}] is not a valid assembly.", e.FileName );
}
}
if (pluginAssembly != null)
{
foreach (Type pluginType in pluginAssembly.GetTypes())
{
if (pluginType.IsPublic)
{
if (!pluginType.IsAbstract)
{
//if (dllName.Contains("OpenSim.Region.Environment"))
//{
// int i = 1;
// i++;
//}
if( pluginType.GetInterface("IRegionModule") != null )
{
modules.Add((IRegionModule) Activator.CreateInstance(pluginType));
}
}
}
}
}
return modules.ToArray();
}
public void PostInitialise()
{
foreach (IRegionModule module in LoadedSharedModules.Values)
{
module.PostInitialise();
}
foreach (IRegionModule module in LoadedModules)
{
module.PostInitialise();
}
}
public void ClearCache()
{
LoadedAssemblys.Clear();
}
}
}
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