private IEnumerable <CommandHandlerWrapper> GetWrappedHandlers(Domain.Bus.Command.Command command)
{
var handlerType = typeof(CommandHandler <>).MakeGenericType(command.GetType());
var wrapperType = typeof(CommandHandlerWrapper <>).MakeGenericType(command.GetType());
var handlers =
(IEnumerable)_provider.GetService(typeof(IEnumerable <>).MakeGenericType(handlerType));
var wrappedHandlers = _commandHandlers.GetOrAdd(command.GetType(), handlers.Cast <object>()
.Select(handler => (CommandHandlerWrapper)Activator.CreateInstance(wrapperType)));
return(wrappedHandlers);
}
public async Task Dispatch(Domain.Bus.Command.Command command)
{
var wrappedHandlers = GetWrappedHandlers(command);
if (wrappedHandlers == null)
{
throw new CommandNotRegisteredError(command);
}
foreach (var handler in wrappedHandlers)
{
await handler.Handle(command, _provider);
}
}