/// <summary>
/// The function that needs to be called before sending a request to the server. Creates and initializes dependency telemetry item.
/// </summary>
/// <param name="telemetryClient">Telemetry client object to initialize the context of the telemetry item.</param>
internal static DependencyTelemetry BeginTracking(TelemetryClient telemetryClient)
{
var telemetry = new DependencyTelemetry();
telemetry.Start();
Activity activity;
Activity currentActivity = Activity.Current;
// On .NET46 without profiler, outgoing requests are instrumented with reflection hook in DiagnosticSource
//// see https://github.com/dotnet/corefx/blob/master/src/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/HttpHandlerDiagnosticListener.cs
// it creates an Activity and injects standard 'Request-Id' and 'Correlation-Context' headers itself, so we should not start Activity in this case
if (currentActivity != null && currentActivity.OperationName == "System.Net.Http.Desktop.HttpRequestOut")
{
activity = currentActivity;
}
else
{
// Every operation must have its own Activity
// if dependency is tracked with profiler of event source, we need to generate a proper Id for it
// in case of HTTP it will be propagated into the request header.
// So, we will create a new Activity for the dependency, just to generate an Id.
activity = new Activity(DependencyActivityName);
activity.Start();
}
// OperationCorrelationTelemetryInitializer will initialize telemetry as a child of current activity:
// But we need to initialize dependency telemetry from the current Activity:
// Activity was created for this dependency in the Http Desktop DiagnosticSource
if (activity.IdFormat == ActivityIdFormat.W3C)
{
var context = telemetry.Context;
context.Operation.Id = activity.TraceId.ToHexString();
if (activity.Parent != null || activity.ParentSpanId != default)
{
context.Operation.ParentId = activity.ParentSpanId.ToHexString();
}
telemetry.Id = activity.SpanId.ToHexString();
}
else
{
var context = telemetry.Context;
context.Operation.Id = activity.RootId;
context.Operation.ParentId = activity.ParentId;
telemetry.Id = activity.Id;
}
foreach (var item in activity.Baggage)
{
if (!telemetry.Properties.ContainsKey(item.Key))
{
telemetry.Properties.Add(item);
}
}
telemetryClient.Initialize(telemetry);
PretendProfilerIsAttached = false;
return(telemetry);
}
public void OnBeginTelemetryCreatedWithinRequestScopeIsRequestChild()
{
var context = HttpModuleHelper.GetFakeHttpContext(new Dictionary <string, string>
{
["Request-Id"] = "|guid1.1",
["Correlation-Context"] = "k=v"
});
var config = this.CreateDefaultConfig(context);
var module = this.RequestTrackingTelemetryModuleFactory(config);
module.OnBeginRequest(context);
var requestTelemetry = context.GetRequestTelemetry();
var telemetryClient = new TelemetryClient(config);
var exceptionTelemetry = new ExceptionTelemetry();
telemetryClient.Initialize(exceptionTelemetry);
module.OnEndRequest(context);
Assert.Equal("guid1", exceptionTelemetry.Context.Operation.Id);
Assert.Equal(requestTelemetry.Id, exceptionTelemetry.Context.Operation.ParentId);
Assert.Equal("v", exceptionTelemetry.Context.Properties["k"]);
}
private static RequestTelemetry SetUpRequestActivity(
string requestId,
string requestName,
IEnumerable <KeyValuePair <string, string> > correlationContext,
string activityName)
{
var activity = new Activity(activityName);
activity.SetParentId(requestId);
RequestTelemetry rt = new RequestTelemetry();
rt.Context.Operation.ParentId = requestId;
foreach (KeyValuePair <string, string> pair in correlationContext)
{
activity.AddBaggage(pair.Key, pair.Value);
}
activity.Start();
rt.Id = activity.Id;
rt.Context.Operation.Id = activity.RootId;
rt.Name = requestName;
telemetryClient.Initialize(rt);
rt.Start(Stopwatch.GetTimestamp());
return(rt);
}
/// <summary>
/// The function that needs to be called before sending a request to the server. Creates and initializes dependency telemetry item.
/// </summary>
/// <param name="telemetryClient">Telemetry client object to initialize the context of the telemetry item.</param>
internal static DependencyTelemetry BeginTracking(TelemetryClient telemetryClient)
{
var telemetry = new DependencyTelemetry();
telemetry.Start();
telemetryClient.Initialize(telemetry);
PretendProfilerIsAttached = false;
return telemetry;
}
/// <summary>
/// The function that needs to be called before sending a request to the server. Creates and initializes dependency telemetry item.
/// </summary>
/// <param name="telemetryClient">Telemetry client object to initialize the context of the telemetry item.</param>
internal static DependencyTelemetry BeginTracking(TelemetryClient telemetryClient)
{
var telemetry = new DependencyTelemetry();
telemetry.Start();
telemetryClient.Initialize(telemetry);
#if NET45
Activity activity;
Activity currentActivity = Activity.Current;
// On .NET46 without profiler, outgoing requests are instrumented with reflection hook in DiagnosticSource
//// see https://github.com/dotnet/corefx/blob/master/src/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/HttpHandlerDiagnosticListener.cs
// it creates an Activity and injects standard 'Request-Id' and 'Correlation-Context' headers itself, so we should not start Activity in this case
if (currentActivity != null && currentActivity.OperationName == "System.Net.Http.Desktop.HttpRequestOut")
{
activity = currentActivity;
}
else
{
// Every operation must have its own Activity
// if dependency is tracked with profiler of event source, we need to generate a proper hierarchical Id for it
// in case of HTTP it will be propagated into the requert header.
// So, we will create a new Activity for the dependency, jut to generate an Id.
activity = new Activity(DependencyActivityName);
// This is workaround for the issue https://github.com/Microsoft/ApplicationInsights-dotnet/issues/538
// if there is no parent Activity, ID Activity generates is not random enough to work well with
// ApplicationInsights sampling algorithm
// This code should go away when Activity is fixed: https://github.com/dotnet/corefx/issues/18418
if (Activity.Current == null)
{
activity.SetParentId(telemetry.Id);
}
//// end of workaround
activity.Start();
activity.Stop();
}
// telemetry is initialized from current Activity (root and parent Id, but not the Id)
telemetry.Id = activity.Id;
// set operation root Id in case there was no parent activity (e.g. HttpRequest in background thread)
if (string.IsNullOrEmpty(telemetry.Context.Operation.Id))
{
telemetry.Context.Operation.Id = activity.RootId;
}
#else
// telemetry is initialized by Base SDK OperationCorrealtionTelemetryInitializer
// however it does not know about Activity on .NET40 and does not know how to properly generate Ids
// let's fix it
telemetry.Id = ApplicationInsightsActivity.GenerateDependencyId(telemetry.Context.Operation.ParentId);
telemetry.Context.Operation.Id = ApplicationInsightsActivity.GetRootId(telemetry.Id);
#endif
PretendProfilerIsAttached = false;
return(telemetry);
}
/// <summary>
/// The function that needs to be called before sending a request to the server. Creates and initializes dependency telemetry item.
/// </summary>
/// <param name="telemetryClient">Telemetry client object to initialize the context of the telemetry item.</param>
internal static DependencyTelemetry BeginTracking(TelemetryClient telemetryClient)
{
var telemetry = new DependencyTelemetry();
telemetry.Start();
telemetryClient.Initialize(telemetry);
PretendProfilerIsAttached = false;
return(telemetry);
}
public void OnBeginTelemetryCreatedWithinRequestScopeIsRequestChildW3COff()
{
var context = HttpModuleHelper.GetFakeHttpContext();
var config = this.CreateDefaultConfig(context);
var module = this.RequestTrackingTelemetryModuleFactory(this.CreateDefaultConfig(context));
Activity.DefaultIdFormat = ActivityIdFormat.Hierarchical;
Activity.ForceDefaultIdFormat = true;
module.OnBeginRequest(context);
var activity = Activity.Current;
var requestTelemetry = context.GetRequestTelemetry();
var telemetryClient = new TelemetryClient(config);
var exceptionTelemetry = new ExceptionTelemetry();
telemetryClient.Initialize(exceptionTelemetry);
module.OnEndRequest(context);
Assert.Equal(activity.RootId, exceptionTelemetry.Context.Operation.Id);
Assert.Equal(requestTelemetry.Context.Operation.Id, exceptionTelemetry.Context.Operation.Id);
Assert.Equal(requestTelemetry.Id, exceptionTelemetry.Context.Operation.ParentId);
}
/// <summary>
/// The function that needs to be called before sending a request to the server. Creates and initializes dependency telemetry item.
/// </summary>
/// <param name="telemetryClient">Telemetry client object to initialize the context of the telemetry item.</param>
internal static DependencyTelemetry BeginTracking(TelemetryClient telemetryClient)
{
var telemetry = new DependencyTelemetry();
telemetry.Start();
Activity activity;
Activity currentActivity = Activity.Current;
// On .NET46 without profiler, outgoing requests are instrumented with reflection hook in DiagnosticSource
//// see https://github.com/dotnet/corefx/blob/master/src/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/HttpHandlerDiagnosticListener.cs
// it creates an Activity and injects standard 'Request-Id' and 'Correlation-Context' headers itself, so we should not start Activity in this case
if (currentActivity != null && currentActivity.OperationName == "System.Net.Http.Desktop.HttpRequestOut")
{
activity = currentActivity;
// OperationCorrelationTelemetryInitializer will initialize telemetry as a child of current activity:
// But we need to initialize dependency telemetry from the current Activity:
// Activity was created for this dependency in the Http Desktop DiagnosticSource
var context = telemetry.Context;
context.Operation.Id = activity.RootId;
context.Operation.ParentId = activity.ParentId;
foreach (var item in activity.Baggage)
{
if (!telemetry.Properties.ContainsKey(item.Key))
{
telemetry.Properties.Add(item);
}
}
telemetryClient.Initialize(telemetry);
}
else
{
telemetryClient.Initialize(telemetry);
// Every operation must have its own Activity
// if dependency is tracked with profiler of event source, we need to generate a proper Id for it
// in case of HTTP it will be propagated into the requert header.
// So, we will create a new Activity for the dependency, just to generate an Id.
activity = new Activity(DependencyActivityName);
// As a first step in supporting W3C protocol in ApplicationInsights,
// we want to generate Activity Ids in the W3C compatible format.
// While .NET changes to Activity are pending, we want to ensure trace starts with W3C compatible Id
// as early as possible, so that everyone has a chance to upgrade and have compatibility with W3C systems once they arrive.
// So if there is no parent Activity (i.e. this request has happened in the background, without parent scope), we'll override
// the current Activity with the one with properly formatted Id. This workaround should go away
// with W3C support on .NET https://github.com/dotnet/corefx/issues/30331 (TODO)
if (currentActivity == null)
{
activity.SetParentId(StringUtilities.GenerateTraceId());
}
// end of workaround
activity.Start();
}
// telemetry is initialized from current Activity (root and parent Id, but not the Id)
telemetry.Id = activity.Id;
// set operation root Id in case there was no parent activity (e.g. HttpRequest in background thread)
if (string.IsNullOrEmpty(telemetry.Context.Operation.Id))
{
telemetry.Context.Operation.Id = activity.RootId;
}
#pragma warning disable 612, 618
if (IsW3CEnabled)
{
W3COperationCorrelationTelemetryInitializer.UpdateTelemetry(telemetry, activity, true);
}
#pragma warning restore 612, 618
PretendProfilerIsAttached = false;
return(telemetry);
}
