private static bool FilterMatchesController(FilterContext filterContext, FilterMetadata metadata)
{
return(metadata.ControllerType != null &&
metadata.ControllerType.IsAssignableFrom(filterContext.ControllerType) &&
metadata.FilterScope == FilterScope.Controller &&
metadata.MethodInfo == null);
}
AsFilterFor <TFilter, TController>(IRegistrationBuilder <object, IConcreteActivatorData, SingleRegistrationStyle> registration, string metadataKey, Expression <Action <TController> > actionSelector, int order)
where TController : IController
{
if (registration == null)
{
throw new ArgumentNullException(nameof(registration));
}
if (actionSelector == null)
{
throw new ArgumentNullException(nameof(actionSelector));
}
var limitType = registration.ActivatorData.Activator.LimitType;
if (!limitType.IsAssignableTo <TFilter>())
{
string message = string.Format(CultureInfo.CurrentCulture, RegistrationExtensionsResources.MustBeAssignableToFilterType,
limitType.FullName, typeof(TFilter).FullName);
throw new ArgumentException(message, nameof(registration));
}
var metadata = new FilterMetadata
{
ControllerType = typeof(TController),
FilterScope = FilterScope.Action,
MethodInfo = GetMethodInfo(actionSelector),
Order = order
};
return(registration.As <TFilter>().WithMetadata(metadataKey, metadata));
}
private static void AsOverrideFor <TFilter, TController>(ContainerBuilder builder, string metadataKey)
{
var metadata = new FilterMetadata
{
ControllerType = typeof(TController),
FilterScope = FilterScope.Controller,
MethodInfo = null
};
builder.RegisterInstance(new AutofacOverrideFilter(typeof(TFilter)))
.As <IOverrideFilter>()
.WithMetadata(metadataKey, metadata);
}
private static void AsOverrideFor <TFilter, TController>(ContainerBuilder builder, string metadataKey, Expression <Action <TController> > actionSelector)
{
if (actionSelector == null)
{
throw new ArgumentNullException(nameof(actionSelector));
}
var metadata = new FilterMetadata
{
ControllerType = typeof(TController),
FilterScope = FilterScope.Action,
MethodInfo = GetMethodInfo(actionSelector)
};
builder.RegisterInstance(new AutofacOverrideFilter(typeof(TFilter)))
.As <IOverrideFilter>()
.WithMetadata(metadataKey, metadata);
}
private static bool FilterMatchesAction(FilterContext filterContext, MethodInfo methodInfo, FilterMetadata metadata)
{
return(metadata.ControllerType != null &&
metadata.ControllerType.IsAssignableFrom(filterContext.ControllerType) &&
metadata.FilterScope == FilterScope.Action &&
metadata.MethodInfo.GetBaseDefinition() == methodInfo.GetBaseDefinition());
}