public async Task <PipelineContinuation> Operate(PipelineContext context)
{
if (context.RouteData() == null)
{
return(PipelineContinuation.Continue);
}
if (context.RouteData()?.Route == null)
{
context.Result = new ErrorResult(HttpStatusCode.NotFound);
return(PipelineContinuation.SkipToPostHandler);
}
// TODO: this doesnt really belong in here
var handlerType = context.RouteData().Route.HandlerType;
if (handlerType == null)
{
context.Result = new ErrorResult(HttpStatusCode.NotFound);
return(PipelineContinuation.SkipToPostHandler);
}
// TODO: this doesnt really belong in here
var handlerAction = context.RouteData().HandlerAction;
if (handlerAction == null)
{
context.Result = new ErrorResult(HttpStatusCode.MethodNotAllowed);
return(PipelineContinuation.SkipToPostHandler);
}
IHandler handler;
try
{
handler = this.container.Resolve(handlerType) as IHandler;
handler.Context = context;
context.Items["Handler"] = handler;
}
catch (Exception e)
{
log.Error(e, "Failed to construct handler `{HandlerType}`", handlerType);
#if DEBUG
if (Debugger.IsAttached)
{
Debugger.Break();
}
#endif
context.Result = ErrorResult.InternalServerError(e);
return(PipelineContinuation.SkipToPostHandler);
}
object[] parameters;
try
{
parameters = this.requestBinder.GetAndValidateParameters(handler, handlerAction.HandleMethod, context.Request, context.RouteData().Values);
}
catch (Exception e)
{
log.Error(e, "Failed to bind/validate parameters for handler `{Handler}`", handler.GetType().FullName);
#if DEBUG
if (Debugger.IsAttached)
{
Debugger.Break();
}
#endif
context.Result = ErrorResult.InternalServerError(e);
return(PipelineContinuation.SkipToPostHandler);
}
try
{
var handleMethod = handlerAction.HandleMethod;
if (handleMethod.MethodReturnsTask())
{
context.Result = await handleMethod.InvokeWithoutThrowingTargetInvocationException <Task <IResult> >(handler, parameters);
}
else
{
context.Result = handleMethod.InvokeWithoutThrowingTargetInvocationException <IResult>(handler, parameters);
}
}
catch (Exception e)
{
log.Error(e, "Failed to execute handler `{Handler}`", handler.GetType().FullName);
#if DEBUG
if (Debugger.IsAttached)
{
Debugger.Break();
}
#endif
context.Result = ErrorResult.InternalServerError(e);
return(PipelineContinuation.SkipToPostHandler);
}
return(PipelineContinuation.SkipToPostHandler);
}