public static IApplicationBuilder UseDataDogTracing(this IApplicationBuilder app, TraceSource source, TraceOptions options) => app.Use(async(context, next) =>
{
var resource = context.Request.Host.Host;
var path = context.Request.Path.HasValue ? context.Request.Path.Value : string.Empty;
using (var span = source.Begin("aspnet.request", options.ServiceName, resource, "web"))
using (var scope = new TraceContextScope(span))
{
if (options.AnalyticsEnabled)
{
span.SetMeta("_dd1.sr.eausr", "true");
}
span.SetMeta("http.method", context.Request.Method);
span.SetMeta("http.path", path);
span.SetMeta("http.query", context.Request.QueryString.HasValue ? context.Request.QueryString.Value : string.Empty);
try
{
await next();
}
catch (Exception ex)
{
span.SetError(ex);
throw;
}
span.SetMeta("http.status_code", context.Response.StatusCode.ToString());
}
});
static void Main(string[] args)
{
Console.WriteLine("starting sample runner");
using (var scope = new TraceContextScope("Пример", TraceContextMode.New))
{
//Childs = new List<Process>() {
//Process.Start(nameof(EchoApp))
//, Process.Start(nameof(HelloApp))};
AppDomain.CurrentDomain.ProcessExit += CurrentDomain_ProcessExit;
AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
Console.WriteLine("wait...");
Thread.Sleep(TimeSpan.FromSeconds(2));
using (var echo = new EchoClient())
echo.Echo("Hello");
using (var hello = new HelloClient())
hello.Hello();
var txt = scope.Root.ToString();
}
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
public void Hello()
{
Console.ForegroundColor = ConsoleColor.Blue;
Console.WriteLine("Hello");
Console.ResetColor();
using (var dbscope = new TraceContextScope("бд"))
{
Thread.Sleep(TimeSpan.FromSeconds(1));
TraceContext.SetProperty("cs", "connection string");
}
using (var echo = new EchoClient())
echo.Echo("вызов echo");
}
/// <summary>
/// Перед отправкой сообщения включаем в заголовок информацию о текущей трассировке
/// </summary>
/// <param name="request">запрос</param>
/// <param name="channel">канал</param>
/// <returns></returns>
public object BeforeSendRequest(ref Message request, IClientChannel channel)
{
var scope = TraceContextScope.Current;
if (scope == null)
{
return(null);
}
var action = request.Headers.Action;
action = action.Replace("http://tempuri.org/", "");
var id = scope.Id;
var @event = TraceEvent.Create(id: id
, name: "call> " + action);
var callScope = new TraceContextScope(id, @event, TraceContextMode.Add);
var index = request.Headers.FindHeader(TraceMeHeader.HeaderName, Namespace.Main);
if (index > -1)
{
request.Headers.RemoveAt(index);
}
var header = MessageHeader.CreateHeader(
TraceMeHeader.HeaderName, Namespace.Main
, new TraceMeHeader()
{
Id = id,
});
request.Headers.Add(header);
return(callScope);
}