private IEnumerable <PluginContainer> loadPlugins(PluginAssemblyContainer assemblyLoadInfo)
{
if (assemblyLoadInfo.IsLoaded)
{
List <PluginContainer> plugins = new List <PluginContainer>();
foreach (Type type in assemblyLoadInfo.CompilationAssembly.GetTypes().Where(t => t.Name.EndsWith("Plugin")))
{
object instance = null;
Exception pluginLoadException = null;
try
{
if (assemblyLoadInfo.IsCodeFileValid())
{
instance = Activator.CreateInstance(type);
}
}
catch (Exception ex)
{
pluginLoadException = ex;
}
if (pluginLoadException == null)
{
PluginContainer pluginContainer = new PluginContainer(assemblyLoadInfo, instance);
plugins.Add(pluginContainer);
if (AutoInitializePlugins)
{
pluginContainer.Initialize();
}
}
else
{
plugins.Add(new PluginContainer(assemblyLoadInfo, pluginLoadException));
}
}
return(plugins);
}
return(new [] { new PluginContainer(assemblyLoadInfo, assemblyLoadInfo.CompilationException) });
}
public PluginContainer LoadPlugin(string virtualPath)
{
PluginAssemblyContainer assembly = compileAssembly(virtualPath, pluginAssemblies.Where(pa => string.Compare(pa.VirtualPath, virtualPath, true) == 0).FirstOrDefault());
if (!assembly.IsLoaded)
{
return(null);
}
PluginContainer plugin = loadPlugins(assembly).FirstOrDefault();
if (plugin != null)
{
return(plugin);
}
return(null);
}
public PluginContainer ReloadPlugin(Func <PluginContainer, bool> findPlugin, Func <PluginContainer, string> getVirtualPath)
{
lock (plugins)
{
PluginContainer foundPlugin = plugins.FirstOrDefault(findPlugin);
PluginContainer pluginToAdd;
if (foundPlugin != null)
{
//TODO: (erikpo) Check the file date to make sure the plugin even needs reloaded
string virtualPath = getVirtualPath(foundPlugin);
if (!string.IsNullOrEmpty(virtualPath))
{
List <PluginContainer> pluginsToRemove = plugins.Where(p => string.Compare(p.VirtualPath, virtualPath, true) == 0).ToList();
PluginAssemblyContainer pluginAssemblyContainer = compileAssembly(virtualPath, foundPlugin);
pluginsToRemove.ForEach(p => plugins.Remove(p));
pluginAssemblies.Remove(pluginAssemblies.First(pa => string.Compare(pa.VirtualPath, virtualPath, true) == 0));
pluginAssemblies.Add(pluginAssemblyContainer);
pluginToAdd = loadPlugins(pluginAssemblyContainer).FirstOrDefault();
}
else
{
plugins.Remove(foundPlugin);
pluginToAdd = loadPlugins(foundPlugin).FirstOrDefault();
}
if (pluginToAdd != null)
{
plugins.Add(pluginToAdd);
return(pluginToAdd);
}
}
return(null);
}
}
private PluginAssemblyContainer compileAssembly(string virtualPath, PluginAssemblyContainer previousPluginAssemblyContainer)
{
if (previousPluginAssemblyContainer != null)
{
PluginAssemblyContainer pluginAssemblyContainer = compileAssembly(virtualPath);
PluginTimeout timeout = new PluginTimeout(TimeSpan.FromSeconds(5));
while (previousPluginAssemblyContainer.Equals(pluginAssemblyContainer))
{
if (timeout.Expired)
{
return(new PluginAssemblyContainer(virtualPath, new TimeoutException(string.Format("Timeout expired while attempting to recompile '{0}'", virtualPath))));
}
Thread.Sleep(10);
pluginAssemblyContainer = compileAssembly(virtualPath);
}
return(pluginAssemblyContainer);
}
return(compileAssembly(virtualPath));
}
public PluginContainer(PluginAssemblyContainer assemblyContainer, object instance)
: base(assemblyContainer.VirtualPath, assemblyContainer.CompilationAssembly)
{
Instance = instance;
}
public PluginContainer(PluginAssemblyContainer assemblyContainer, Exception pluginLoadException)
: base(assemblyContainer.VirtualPath, pluginLoadException)
{
}