RegisterInstance <T>(this ContainerBuilder builder, T instance)
where T : class
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
var activator = new ProvidedInstanceActivator(instance);
var rb = new RegistrationBuilder <T, SimpleActivatorData, SingleRegistrationStyle>(
new TypedService(typeof(T)),
new SimpleActivatorData(activator),
new SingleRegistrationStyle());
rb.SingleInstance();
rb.RegistrationData.DeferredCallback = builder.RegisterCallback(cr =>
{
if (!(rb.RegistrationData.Lifetime is RootScopeLifetime) ||
rb.RegistrationData.Sharing != InstanceSharing.Shared)
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, RegistrationExtensionsResources.InstanceRegistrationsAreSingleInstanceOnly, instance));
}
activator.DisposeInstance = rb.RegistrationData.Ownership == InstanceOwnership.OwnedByLifetimeScope;
// https://github.com/autofac/Autofac/issues/1102
// Single instance registrations with any custom activation phases (i.e. activation handlers) need to be auto-activated,
// so that other behaviour (such as OnRelease) that expects 'normal' object lifetime behaviour works as expected.
if (rb.ResolvePipeline.Middleware.Any(s => s.Phase == PipelinePhase.Activation))
{
var autoStartService = rb.RegistrationData.Services.First();
var activationRegistration = new RegistrationBuilder <T, SimpleActivatorData, SingleRegistrationStyle>(
new AutoActivateService(),
new SimpleActivatorData(new DelegateActivator(typeof(T), (c, p) => c.ResolveService(autoStartService))),
new SingleRegistrationStyle());
RegistrationBuilder.RegisterSingleComponent(cr, activationRegistration);
}
RegistrationBuilder.RegisterSingleComponent(cr, rb);
});
return(rb);
}
public static IRegistrationBuilder <T, SimpleActivatorData, SingleRegistrationStyle> RegisterInstance <T>(this ContainerBuilder builder, T instance) where T : class
{
if (builder == null)
{
throw new ArgumentNullException("builder");
}
if (instance == null)
{
throw new ArgumentNullException("instance");
}
ProvidedInstanceActivator activator = new ProvidedInstanceActivator(instance);
RegistrationBuilder <T, SimpleActivatorData, SingleRegistrationStyle> rb = new RegistrationBuilder <T, SimpleActivatorData, SingleRegistrationStyle>(new TypedService(typeof(T)), new SimpleActivatorData(activator), new SingleRegistrationStyle());
rb.SingleInstance();
builder.RegisterCallback(delegate(IComponentRegistry cr) {
if (!(rb.RegistrationData.Lifetime is RootScopeLifetime) || (rb.RegistrationData.Sharing != InstanceSharing.Shared))
{
throw new InvalidOperationException(string.Format(RegistrationExtensionsResources.InstanceRegistrationsAreSingleInstanceOnly, instance));
}
activator.DisposeInstance = rb.RegistrationData.Ownership == InstanceOwnership.OwnedByLifetimeScope;
RegistrationBuilder.RegisterSingleComponent <T, SimpleActivatorData, SingleRegistrationStyle>(cr, rb);
});
return(rb);
}
