Class TracingHook

TracingHook is a Hook that adds tracing capabilities to the LaunchDarkly SDK for feature flag evaluations.

To create a TracingHook, see TracingHookBuilder.

Inheritance

object

Hook

TracingHook

Implements

IDisposable

Inherited Members

Hook.Dispose(bool)

Hook.Dispose()

Hook.Metadata

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: LaunchDarkly.Sdk.Server.Telemetry

Assembly: LaunchDarkly.ServerSdk.Telemetry.dll

Syntax

public class TracingHook : Hook, IDisposable

Properties

ActivitySourceName

Returns the name of the ActivitySource that the TracingHook uses to generate Activities.

Declaration

public static string ActivitySourceName { get; }

Property Value

Type	Description
string

Methods

AfterEvaluation(EvaluationSeriesContext, ImmutableDictionary<string, object>, EvaluationDetail<LdValue>)

Ends the activity created in BeforeEvaluation, if it exists. Adds the feature flag key, provider name, and context key to the existing activity. If IncludeVariant is enabled, also adds the variant.

Declaration

public override ImmutableDictionary<string, object> AfterEvaluation(EvaluationSeriesContext context, ImmutableDictionary<string, object> data, EvaluationDetail<LdValue> detail)

Parameters

Type	Name	Description
EvaluationSeriesContext	context	the evaluation parameters
ImmutableDictionary<string, object>	data	the series data
EvaluationDetail<LdValue>	detail	the evaluation details

Returns

Type	Description
ImmutableDictionary<string, object>

Overrides

Hook.AfterEvaluation(EvaluationSeriesContext, ImmutableDictionary<string, object>, EvaluationDetail<LdValue>)

BeforeEvaluation(EvaluationSeriesContext, ImmutableDictionary<string, object>)

Optionally creates a new Activity for the evaluation of a feature flag.

Declaration

public override ImmutableDictionary<string, object> BeforeEvaluation(EvaluationSeriesContext context, ImmutableDictionary<string, object> data)

Parameters

Type	Name	Description
EvaluationSeriesContext	context	the evaluation parameters
ImmutableDictionary<string, object>	data	the series data

Returns

Type	Description
ImmutableDictionary<string, object>	unchanged data if CreateActivities is disabled, or data containing a reference to the created activity

Overrides

Hook.BeforeEvaluation(EvaluationSeriesContext, ImmutableDictionary<string, object>)

Builder()

Returns a TracingHookBuilder which can be used to create a TracingHook.

Declaration

public static TracingHookBuilder Builder()

Returns

Type	Description
TracingHookBuilder	the builder

Default()

Returns the default TracingHook. By default, the hook will attach an event to the current activity.

To change the configuration, see Builder().

Declaration

public static TracingHook Default()

Returns

Type	Description
TracingHook

Implements

IDisposable