EventHandlersDescriptor IEventHandlerSelector.SelectHandlers(EventHandlerRequest request)
{
EventHandlersDescriptor eventDescriptor = null;
this.traceWriter.TraceBeginEnd(
request,
TraceCategories.HandlersCategory,
TraceLevel.Info,
this.innerSelector.GetType().Name,
SelectActionMethodName,
beginTrace: null,
execute: () => eventDescriptor = this.innerSelector.SelectHandlers(request),
endTrace: tr =>
{
tr.Message = Error.Format(
Resources.TraceHandlerSelectedMessage,
FormattingUtilities.EventHandlerDescriptorsToString(eventDescriptor.EventHandlerDescriptors));
},
errorTrace: null);
Collection <EventHandlerDescriptor> handlerDescriptors = new Collection <EventHandlerDescriptor>();
foreach (var handlerDescriptor in eventDescriptor.EventHandlerDescriptors)
{
// Intercept returned EventHandlerDescriptor with a tracing version
if (handlerDescriptor != null && !(handlerDescriptor is EventHandlerDescriptorTracer))
{
handlerDescriptors.Add(new EventHandlerDescriptorTracer(handlerDescriptor, this.traceWriter));
}
else
{
handlerDescriptors.Add(handlerDescriptor);
}
}
return(new EventHandlersDescriptor(eventDescriptor.EventName, handlerDescriptors));
}