Class TextMapPropagator

Defines an interface for a Propagator of TextMap type, which uses string key/value pairs to inject and extract propagation data.

public abstract class TextMapPropagator

Derived: B3Propagator

BaggagePropagator

CompositeTextMapPropagator

TraceContextPropagator

Inherited Members: object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

protected TextMapPropagator()

Gets the list of headers used by propagator. The use cases of this are:

public abstract ISet<string> Fields { get; }

Extracts the context from a carrier.

public abstract PropagationContext Extract<T>(PropagationContext context, T carrier, Func<T, string, IEnumerable<string>> getter)

context PropagationContext: The default context to be used if Extract fails.
carrier T: Object to extract context from. Instance of this object will be passed to the getter.
getter Func<T, string, IEnumerable<string>>: Function that will return string value of a key with the specified name.

T: Type of object to extract context from. Typically HttpRequest or similar.

Injects the context into a carrier.

public abstract void Inject<T>(PropagationContext context, T carrier, Action<T, string, string> setter)

context PropagationContext: The default context to transmit over the wire.
carrier T: Object to set context on. Instance of this object will be passed to setter.
setter Action<T, string, string>: Action that will set name and value pair on the object.