public static IMvcBuilder AddPluginFutures(this IMvcBuilder mvcBuilder, IHostEnvironment environment)
{
var pluginContext = new PluginContext();
var pluginsFolder = Path.Combine(environment.ContentRootPath, pluginFolderName);
foreach (var dir in Directory.GetDirectories(pluginsFolder))
{
var pluginFolder = Path.GetFileName(dir);
var pluginAssemblyPath = Path.Combine(dir, pluginFolder + assemblyFileExtension);
if (!File.Exists(pluginAssemblyPath))
continue;
var pluginManifestFile = Path.Combine(dir, pluginManifestName);
if (!File.Exists(pluginManifestFile))
continue;
PluginInfo pluginInfo = null;
using (var reader = new StreamReader(pluginManifestFile))
{
string content = reader.ReadToEnd();
pluginInfo = JsonSerializer.Deserialize<PluginInfo>(content);
}
if (pluginInfo == null)
continue;
var pluginLoadContext = new PluginLoadContext(pluginAssemblyPath);
pluginInfo.Assembly = pluginLoadContext.LoadDefaultAssembly();
pluginContext.Plugins.Add(pluginInfo);
var partFactory = ApplicationPartFactory.GetApplicationPartFactory(pluginInfo.Assembly);
foreach (var part in partFactory.GetApplicationParts(pluginInfo.Assembly))
{
mvcBuilder.PartManager.ApplicationParts.Add(part);
}
// This piece finds and loads related parts, such as WebPlugin1.Views.dll
var relatedAssembliesAttrs = pluginInfo.Assembly.GetCustomAttributes<RelatedAssemblyAttribute>();
foreach (var attr in relatedAssembliesAttrs)
{
var assembly = pluginLoadContext.LoadFromAssemblyName(new AssemblyName(attr.AssemblyFileName));
partFactory = ApplicationPartFactory.GetApplicationPartFactory(assembly);
foreach (var part in partFactory.GetApplicationParts(assembly))
{
mvcBuilder.PartManager.ApplicationParts.Add(part);
}
}
}
mvcBuilder.Services.AddSingleton(pluginContext);
return mvcBuilder;
}
