/// <summary>
/// Unloads the <paramref name="plugins"/> that were loaded into this application domain.
/// </summary>
private void UnloadPlugins()
{
// unload plugins in reverse order
foreach (var plugin in loadedPlugins.Reverse <IPlugin>())
{
plugin.OnUnload();
}
loadedPlugins.Clear(); // remove all plugins once unloaded
foreach (var desc in PluginDescriptionIterator.IterateDependenciesBottomUp(plugins.Where(x => x.PluginState != PluginState.Disabled)))
{
desc.Unload();
OnPluginUnloaded(new PluginInfrastructureEventArgs(desc));
}
plugins.Clear(); // remove all plugin descriptions once unloaded
}
/// <summary>
/// Runs the application declared in <paramref name="appInfo"/>.
/// This is a synchronous call. When the application is terminated all plugins are unloaded.
/// </summary>
/// <param name="appInfo">Description of the application to run</param>
internal void Run(ApplicationDescription appInfo, ICommandLineArgument[] args)
{
IApplication runnablePlugin = (IApplication)Activator.CreateInstance(appInfo.DeclaringAssemblyName, appInfo.DeclaringTypeName).Unwrap();
try {
runnablePlugin.Run(args);
}
finally {
// unload plugins in reverse order
foreach (var plugin in loadedPlugins.Reverse <IPlugin>())
{
plugin.OnUnload();
}
foreach (var desc in PluginDescriptionIterator.IterateDependenciesBottomUp(plugins.Where(x => x.PluginState != PluginState.Disabled)))
{
desc.Unload();
OnPluginUnloaded(new PluginInfrastructureEventArgs(desc));
}
}
}
/// <summary>
/// Loads the <paramref name="plugins"/> into this application domain.
/// </summary>
/// <param name="plugins">Enumerable of plugins that should be loaded.</param>
private void LoadPlugins(IEnumerable <PluginDescription> plugins)
{
// load all loadable plugins (all dependencies available) into the execution context
foreach (var desc in PluginDescriptionIterator.IterateDependenciesBottomUp(plugins.Where(x => x.PluginState != PluginState.Disabled)))
{
foreach (string fileName in desc.AssemblyLocations)
{
// load assembly reflection only first to get the full assembly name
var reflectionOnlyAssembly = Assembly.ReflectionOnlyLoadFrom(fileName);
// load the assembly into execution context using full assembly name
var asm = Assembly.Load(reflectionOnlyAssembly.FullName);
RegisterLoadedAssembly(asm);
// instantiate and load all plugins in this assembly
foreach (var plugin in GetInstances <IPlugin>(asm))
{
plugin.OnLoad();
loadedPlugins.Add(plugin);
}
}
OnPluginLoaded(new PluginInfrastructureEventArgs(desc));
desc.Load();
}
}
