brown.tracingplane

Interface BaggageListener.JoinListener<B extends BaggageContext>

Enclosing class:

BaggageListener

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface BaggageListener.JoinListener<B extends BaggageContext>

Wraps calls to BaggageProvider.join(BaggageContext, BaggageContext) so that baggage instance(s) can be modified.

Method Summary

Modifier and Type	Method and Description
B	join(B left, B right, java.util.function.BiFunction<B,B,B> wrapped) Invoked when BaggageProvider.join(BaggageContext, BaggageContext) is called.

Method Detail

join

B join(B left,
       B right,
       java.util.function.BiFunction<B,B,B> wrapped)

Invoked when BaggageProvider.join(BaggageContext, BaggageContext) is called. wrapped is the default implementation of join which should be called. This method can optionally perform additional logic before or after invocation, or override its behavior completely.

Parameters:

left - a BaggageContext instance, possibly null

right - a BaggageContext instance, possibly null

next - the default BaggageProvider.join(BaggageContext, BaggageContext) function

Returns:

a baggage context with merged contents from left and right