public bool UnloadPlugin(DesktopPluginContext context)
{
Log.Write("Plugin", $"Unloading plugin '{context.FriendlyName}'", LogLevel.Debug);
Plugins.Remove(context);
AssembliesChanged?.Invoke(this, EventArgs.Empty);
return(context.Assemblies.All(p => RemoveAllTypesForAssembly(p)));
}
protected void LoadPlugin(DirectoryInfo directory)
{
// "Plugins" are directories that contain managed and unmanaged dll
// These dlls are loaded into a PluginContext per directory
directory.Refresh();
if (Plugins.All(p => p.Directory.Name != directory.Name))
{
if (directory.Exists)
{
Log.Write("Plugin", $"Loading plugin '{directory.Name}'", LogLevel.Debug);
var context = new DesktopPluginContext(directory);
// Populate PluginTypes so desktop implementations can access them
ImportTypes(context);
Plugins.Add(context);
}
else
{
Log.Write("Plugin", $"Tried to load a nonexistent plugin '{directory.Name}'", LogLevel.Warning);
}
}
else
{
Log.Write("Plugin", $"Attempted to load the plugin {directory.Name} when it is already loaded.", LogLevel.Debug);
}
}
public void LoadPlugins(DirectoryInfo directory)
{
// "Plugins" are directories that contain managed and unmanaged dll
// These dlls are loaded into a PluginContext per directory
Parallel.ForEach(directory.GetDirectories(), (dir, state, index) =>
{
Log.Write("Plugin", $"Loading plugin '{dir.Name}'");
var context = new DesktopPluginContext(dir);
foreach (var plugin in Directory.EnumerateFiles(dir.FullName, "*.dll"))
{
LoadPlugin(context, plugin);
}
PluginContexts.Add(context);
});
// If there are plugins found outside subdirectories then load into FallbackPluginContext
// This fallback does not support loading unmanaged dll if the default loader fails
// We don't worry with duplicate entries here since CLR won't load duplicate assemblies of the same file
foreach (var plugin in directory.EnumerateFiles("*.dll"))
{
var name = Regex.Match(plugin.Name, $"^(.+?){plugin.Extension}").Groups[1].Value;
Log.Write("Plugin", $"Loading independent plugin '{name}'");
LoadPlugin(FallbackPluginContext, plugin.FullName);
}
// Populate PluginTypes so UX and Daemon can access them
Parallel.ForEach(PluginContexts, (loadedContext, _, index) =>
{
LoadPluginTypes(loadedContext);
});
LoadPluginTypes(FallbackPluginContext);
}
public bool UpdatePlugin(DesktopPluginContext plugin, DirectoryInfo source)
{
var targetDir = new DirectoryInfo(plugin.Directory.FullName);
if (UninstallPlugin(plugin))
{
return(InstallPlugin(targetDir, source));
}
return(false);
}
public bool UninstallPlugin(DesktopPluginContext plugin)
{
var random = new Random();
if (!Directory.Exists(TrashDirectory.FullName))
{
TrashDirectory.Create();
}
Log.Write("Plugin", $"Uninstalling plugin '{plugin.FriendlyName}'");
var trashPath = Path.Join(TrashDirectory.FullName, $"{plugin.FriendlyName}_{random.Next()}");
plugin.Directory.MoveTo(trashPath);
return(UnloadPlugin(plugin));
}
public DesktopPluginManager(DirectoryInfo directory) : base()
{
FallbackPluginContext = new DesktopPluginContext(directory);
}
