/// <summary>
/// Find event handlers from <paramref name="assemblies"/>
/// </summary>
/// <param name="assemblies">Assemblies containing handlers</param>
/// <param name="warmUpHandlerInvokersCache">Warm up invokers cache of found handlers</param>
/// <returns>The sequence of found handlers descriptors</returns>
public static IEnumerable <HandlerTypeDescriptor> FindEventHandlersFrom(
IEnumerable <Assembly> assemblies,
bool warmUpHandlerInvokersCache = true)
{
foreach (var assembly in assemblies)
{
var implementations = assembly
.GetTypes()
.Where(type => !type.IsAbstract)
.Select(type => (handlerImplementationType: type,
handlerTypes: type.GetInterfaces().Where(i =>
i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IEventHandler <>))));
foreach (var(handlerImplementationType, handlerTypes) in implementations)
{
foreach (var handlerType in handlerTypes)
{
if (warmUpHandlerInvokersCache)
{
var eventType = ExtractEventType(handlerType);
var ctxCtor =
EventDispatcher.EventContextCtorFactory.GetOrCreate(eventType);
HandlerInvokerFactory <IEventHandlingContext> .GetOrCreate(ctxCtor.ContextType, handlerType);
}
yield return(new HandlerTypeDescriptor(handlerType, handlerImplementationType));
}
}
}
}
/// <summary>
/// Find command handlers from <paramref name="assemblies"/>
/// </summary>
/// <param name="assemblies">Assemblies containing handlers</param>
/// <param name="warmUpHandlerInvokersCache">Warm up invokers cache of found handlers</param>
/// <returns>The sequence of found handlers descriptors</returns>
public static IEnumerable <HandlerTypeDescriptor> FindCommandHandlersFrom(
IEnumerable <Assembly> assemblies,
bool warmUpHandlerInvokersCache = true)
{
foreach (var assembly in assemblies)
{
var implementations = assembly
.GetTypes()
.Where(type => !type.IsAbstract)
.Select(type => (handlerImplementationType: type,
handlerTypes: type.GetInterfaces().Where(i =>
i.IsGenericType && (i.GetGenericTypeDefinition() == typeof(ICommandHandler <>) ||
i.GetGenericTypeDefinition() == typeof(ICommandHandler <,>)))));
foreach (var(handlerImplementationType, handlerTypes) in implementations)
{
foreach (var handlerType in handlerTypes)
{
if (warmUpHandlerInvokersCache)
{
var(commandType, resultType) = ExtractCommandAndResultTypes(handlerType);
var ctxCtor =
CommandProcessor.CommandContextCtorFactory.GetOrCreate(commandType, resultType);
HandlerInvokerFactory <ICommandHandlingContext> .GetOrCreate(ctxCtor.ContextType, handlerType);
}
yield return(new HandlerTypeDescriptor(handlerType, handlerImplementationType));
}
}
}
}
