Microsoft Rest ServiceClientTracing - how to output tracing results to Console or Debug?

Question

ServiceClientTracing class has static boolean IsEnabled property that allows you to turn tracing on. But when you set property to true no output is showing in Console/Debug or anywhere else.

How to set tracing so that output is visible in either Console/Debug Window (or anywhere really)?

Answer 1

Seems that this is not supported by default in Microsoft.Rest.ClientRuntime project, so you need to role your own class. For example:

class DebugTracer : IServiceClientTracingInterceptor
{
    public void Information(string message)
    {
        Debug.WriteLine(message);
    }

    public void TraceError(string invocationId, Exception exception)
    {
        Debug.WriteLine("Exception in {0}: {1}", invocationId, exception);
    }

    public void ReceiveResponse(string invocationId, HttpResponseMessage response)
    {
        string requestAsString = (response == null ? string.Empty : response.AsFormattedString());
        Debug.WriteLine("invocationId: {0}\r\nresponse: {1}", invocationId, requestAsString);
    }

    public void SendRequest(string invocationId, HttpRequestMessage request)
    {
        string requestAsString = (request == null ? string.Empty : request.AsFormattedString());
        Debug.WriteLine("invocationId: {0}\r\nrequest: {1}", invocationId, requestAsString);
    }

    public void Configuration(string source, string name, string value)
    {
        Debug.WriteLine("Configuration: source={0}, name={1}, value={2}", source, name, value);
    }

    public void EnterMethod(string invocationId, object instance, string method, IDictionary<string, object> parameters)
    {
        Debug.WriteLine("invocationId: {0}\r\ninstance: {1}\r\nmethod: {2}\r\nparameters: {3}",
            invocationId, instance, method, parameters.AsFormattedString());
    }

    public void ExitMethod(string invocationId, object returnValue)
    {
        string returnValueAsString = (returnValue == null ? string.Empty : returnValue.ToString());
        Debug.WriteLine("Exit with invocation id {0}, the return value is {1}",
            invocationId, returnValueAsString);
    }
}

Appropriated from Log4NetTracingInterceptor.

Now if you want to turn Tracing on all you need to do is:

ServiceClientTracing.IsEnabled = true;
ServiceClientTracing.AddTracingInterceptor(new DebugTracer());