CommandHandlerDescriptor ICommandHandlerSelector.SelectHandler(CommandHandlerRequest request)
{
CommandHandlerDescriptor handlerDescriptor = null;
this.traceWriter.TraceBeginEnd(
request,
TraceCategories.HandlersCategory,
TraceLevel.Info,
this.innerSelector.GetType().Name,
SelectActionMethodName,
beginTrace: null,
execute: () => handlerDescriptor = this.innerSelector.SelectHandler(request),
endTrace: tr =>
{
tr.Message = Error.Format(
Resources.TraceHandlerSelectedMessage,
FormattingUtilities.HandlerDescriptorToString(handlerDescriptor));
},
errorTrace: null);
// Intercept returned HttpActionDescriptor with a tracing version
if (handlerDescriptor != null && !(handlerDescriptor is CommandHandlerDescriptorTracer))
{
return(new CommandHandlerDescriptorTracer(handlerDescriptor, this.traceWriter));
}
return(handlerDescriptor);
}
public override Task <object> ExecuteAsync(CommandHandlerContext context, CancellationToken cancellationToken)
{
if (context == null)
{
throw Error.ArgumentNull("context");
}
return(this.traceWriter.TraceBeginEndAsync(
context.Request,
TraceCategories.HandlersCategory,
TraceLevel.Info,
this.innerDescriptor.GetType().Name,
ExecuteAsyncMethodName,
beginTrace: null,
execute: () => this.innerDescriptor.ExecuteAsync(context, cancellationToken),
endTrace: (tr, value) =>
{
tr.Message = Error.Format("Handler returnd '{0}'.", FormattingUtilities.ValueToString(value, CultureInfo.CurrentCulture));
},
errorTrace: null));
}
/// <summary>
/// The on command executing.
/// </summary>
/// <param name="handlerContext">
/// The handler context.
/// </param>
public override void OnCommandExecuting(CommandHandlerContext handlerContext)
{
if (handlerContext == null)
{
throw Error.ArgumentNull("handlerContext");
}
this.traceWriter.TraceBeginEnd(
handlerContext.Request,
TraceCategories.FiltersCategory,
TraceLevel.Info,
this.innerFilter.GetType().Name,
OnCommandExecutingMethodName,
beginTrace: tr =>
{
tr.Message = Error.Format(Resources.TraceActionFilterMessage, FormattingUtilities.HandlerDescriptorToString(handlerContext.Descriptor));
},
execute: () => this.innerFilter.OnCommandExecuting(handlerContext),
endTrace: null,
errorTrace: null);
}
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));
}
