Web API methods not getting profile data

rzieroth

I have a Web API method which I am trying to profile. When I make the call to the web api I can see the profiler track the construction of the controller but the api method is not getting any profile data captured.

[ResponseType(typeof(ResponseMessage))]
public IHttpActionResult Post(RequestMessage inRequest)
{
var engine = EngineFactory.GetMyEngine(inRequest);
var aResult = engine.GetRecommendations(inRequest, RequestContext);
return Ok<ResponseMessage>(recommendationResult);
}

Any ideas on what is going on?

Brian Donahue

Hi,

Is it because the application you are profiling is the consumer of the webservice, and the web methods are running in a WCF service hosted in a webserver? In that case, you can profile the webservice to see these results.

rzieroth

I have narrowd down that it has to do with passing complex objects as parameters to web api methods.

I have a Web API Controller with 4 methods. The first two
Post(int id) and Get(int id) get profile data.
The next two do not get profile data.
Get(MyObject inputObject)
Post(MyObject inputObject)

I start the Ants profile session using IIS original port and I have the Tools>Advanced Options>"Simplify very complex stack traces" and Avoid Profiling extremely trivial Method" unchecked.

IE gets launched to my homepage controllers.
Then I execute calls in fiddler and get 200 responses for all 4 calls with approrpiate response bodies.
I then go back to ANTS and stop the profile. In the methods view I need to uncheck the "Hide insignificant methods" checkbox as these apis are very simple.
I can see the data for api for the simple Post(int id) and Get(int id) but not the other two.

Here is the controller class.

public class TestComplexInputController : ApiController
    {
        public int Post(int id)
        {
            return id;
        }
        public int Get(int id)
        {
            return id;
        }

        public int Get(MyObject inputObject)
        {
            return inputObject.number;
        }
        public int Post(MyObject inputObject)
        {
            return inputObject.number;
        }

        public class MyObject
        {
            public int number;
        }
    }

Here are the calls I make in fiddler

==========================================================

GET http://mytest.mysite.com/PerformanceTraining/api/TestComplexInput/234 HTTP/1.1
User-Agent: Fiddler
Host: mytest.mysite.com
Pragma: no-cache
Content-Type: application/json

==========================================================

POST http://mytest.mysite.com/PerformanceTraining/api/TestComplexInput/1234 HTTP/1.1
User-Agent: Fiddler
Host: mytest.mysite.com
Pragma: no-cache
Content-Type: application/json
Content-Length: 0

==========================================================

POST http://mytest.mysite.com/PerformanceTraining/api/TestComplexInput HTTP/1.1
User-Agent: Fiddler
Host: mytest.mysite.com
Pragma: no-cache
Content-Type: application/json
Content-Length: 15

{"number":1234}

==========================================================

GET http://mytest.mysite.com/PerformanceTraining/api/TestComplexInput HTTP/1.1
User-Agent: Fiddler
Host: mytest.mysite.com
Pragma: no-cache
Content-Type: application/json
Content-Length: 15

{"number":1234}

rzieroth

Brian, I am definately profiling the correct process as I see other methods in the same file get profiling data.