public async Task <IOpenModPlugin> TryActivatePluginAsync(Assembly assembly)
{
try
{
if (m_IsDisposing)
{
throw new ObjectDisposedException(nameof(PluginActivator));
}
var pluginMetadata = assembly.GetCustomAttribute <PluginMetadataAttribute>();
if (pluginMetadata == null)
{
m_Logger.LogError(
$"Failed to load plugin from assembly {assembly}: couldn't find any plugin metadata");
return(null);
}
var pluginTypes = assembly.FindTypes <IOpenModPlugin>(false).ToList();
if (pluginTypes.Count == 0)
{
m_Logger.LogError(
$"Failed to load plugin from assembly {assembly}: couldn't find any IOpenModPlugin implementation");
return(null);
}
if (pluginTypes.Count > 1)
{
m_Logger.LogError(
$"Failed to load plugin from assembly {assembly}: assembly has multiple IOpenModPlugin instances");
return(null);
}
var pluginType = pluginTypes.Single();
IOpenModPlugin pluginInstance;
try
{
var serviceProvider = m_LifetimeScope.Resolve <IServiceProvider>();
var lifetimeScope = m_LifetimeScope.BeginLifetimeScope(containerBuilder =>
{
var workingDirectory = PluginHelper.GetWorkingDirectory(m_Runtime, pluginMetadata.Id);
var configurationBuilder = new ConfigurationBuilder();
if (Directory.Exists(workingDirectory))
{
configurationBuilder
.SetBasePath(workingDirectory)
.AddYamlFile("config.yaml", optional: true, reloadOnChange: true);
}
var configuration = configurationBuilder
.AddEnvironmentVariables(pluginMetadata.Id.Replace(".", "_") + "_")
.Build();
containerBuilder.Register(context => configuration)
.As <IConfiguration>()
.As <IConfigurationRoot>()
.SingleInstance()
.OwnedByLifetimeScope();
containerBuilder.RegisterType(pluginType)
.As(pluginType)
.As <IOpenModComponent>()
.As <IOpenModPlugin>()
.SingleInstance()
.ExternallyOwned();
containerBuilder.RegisterType <ScopedPermissionChecker>()
.As <IPermissionChecker>()
.InstancePerLifetimeScope()
.OwnedByLifetimeScope();
containerBuilder.Register(context => m_DataStoreFactory.CreateDataStore(null, workingDirectory))
.As <IDataStore>()
.SingleInstance()
.OwnedByLifetimeScope();
var stringLocalizer = Directory.Exists(workingDirectory)
? m_StringLocalizerFactory.Create("translations", workingDirectory)
: NullStringLocalizer.Instance;
containerBuilder.Register(context => stringLocalizer)
.As <IStringLocalizer>()
.SingleInstance()
.OwnedByLifetimeScope();
var services =
ServiceRegistrationHelper.FindFromAssembly <PluginServiceImplementationAttribute>(assembly,
m_Logger);
var servicesRegistrations = services.OrderBy(d => d.Priority,
new PriorityComparer(PriortyComparisonMode.LowestFirst));
foreach (var servicesRegistration in servicesRegistrations)
{
var implementationType = servicesRegistration.ServiceImplementationType;
containerBuilder.RegisterType(implementationType)
.As(implementationType)
.WithLifetime(servicesRegistration.Lifetime)
.OwnedByLifetimeScope();
foreach (var service in servicesRegistration.ServiceTypes)
{
containerBuilder.Register(c => c.Resolve(implementationType))
.As(service)
.WithLifetime(servicesRegistration.Lifetime)
.OwnedByLifetimeScope();
}
}
foreach (var type in pluginType.Assembly.FindTypes <IPluginContainerConfigurator>())
{
var configurator =
(IPluginContainerConfigurator)ActivatorUtilities.CreateInstance(serviceProvider, type);
configurator.ConfigureContainer(new PluginServiceConfigurationContext(m_LifetimeScope, configuration, containerBuilder));
}
var configurationEvent = new PluginContainerConfigurationEvent(pluginMetadata, pluginType,
configuration, containerBuilder, workingDirectory);
AsyncHelper.RunSync(() => m_EventBus.EmitAsync(m_Runtime, this, configurationEvent));
});
pluginInstance = (IOpenModPlugin)lifetimeScope.Resolve(pluginType);
var pluginActivateEvent = new PluginActivateEvent(pluginInstance);
await m_EventBus.EmitAsync(m_Runtime, this, pluginActivateEvent);
if (pluginActivateEvent.IsCancelled)
{
await lifetimeScope.DisposeAsync();
return(null);
}
}
catch (Exception ex)
{
m_Logger.LogError(ex,
$"Failed to load plugin from type: {pluginType.FullName} in assembly: {assembly.FullName}");
return(null);
}
try
{
await pluginInstance.LoadAsync();
var serviceProvider = pluginInstance.LifetimeScope.Resolve <IServiceProvider>();
var pluginHelpWriter = ActivatorUtilities.CreateInstance <PluginHelpWriter>(serviceProvider);
await pluginHelpWriter.WriteHelpFileAsync();
}
catch (Exception ex)
{
m_Logger.LogError(ex, $"Failed to load plugin: {pluginInstance.DisplayName} v{pluginInstance.Version}");
return(null);
}
m_ActivatedPlugins.Add(new WeakReference(pluginInstance));
return(pluginInstance);
}
catch (Exception ex)
{
m_Logger.LogError(ex, $"Failed to load plugin from assembly: {assembly.FullName}");
return(null);
}
}
