Microsoft Rest ServiceClientTracing - 如何将跟踪结果输出到控制台或调试？

Question

ServiceClientTracing 类具有static boolean IsEnabled 属性，允许您打开跟踪。但是，当您将属性设置为 true 时，控制台/调试或其他任何地方都不会显示任何输出。

如何设置跟踪以使输出在控制台/调试窗口（或任何地方）中可见？

Answer 1

似乎Microsoft.Rest.ClientRuntime项目默认不支持这个，所以你需要角色自己的类。例如：

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。

现在，如果您想开启追踪功能，您只需：

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