How to enable JSON.NET serialization/deserialization tracing in asp.net owin api project?

Question

I followed the JSON.NET blog - enable tracing .

It only shows how to enable tracing when you are using one of their object to manually deserialize. However, in asp.net OWIN, the serialization/deserialization is done by the framework and I wanted to know if there is any way to hook the tracing to asp.net OWIN stack for JSON.NET?

Any help is appreciated.

Answer 1

you can enable tracing like this

public class SimpleTracer : ITraceWriter
{
    public void Trace(HttpRequestMessage request, string category, TraceLevel level, 
        Action<TraceRecord> traceAction)
    {
        TraceRecord rec = new TraceRecord(request, category, level);
        traceAction(rec);
        WriteTrace(rec);
    }

     //here you can write logic for json serialization/deserialization    
    protected void WriteTrace(TraceRecord rec)
    {
        var message = string.Format("{0};{1};{2}", 
            rec.Operator, rec.Operation, rec.Message);
        System.Diagnostics.Trace.WriteLine(message, rec.Category);
    }
}

plug in your tracing

 config.Services.Replace(typeof(ITraceWriter), new SimpleTracer());

Based on : Tracing in ASP.NET Web API 2