io.opentracing.v_030.util

Class ThreadLocalActiveSpanSource

java.lang.Object

io.opentracing.v_030.util.ThreadLocalActiveSpanSource

All Implemented Interfaces:

ActiveSpanSource

public class ThreadLocalActiveSpanSource
extends Object
implements ActiveSpanSource

A simple ActiveSpanSource implementation built on top of Java's thread-local storage primitive.

See Also:

ThreadLocalActiveSpan, ActiveSpanSource.activeSpan()

Constructor Summary

Constructors

Constructor and Description
ThreadLocalActiveSpanSource()

Method Summary

Modifier and Type	Method and Description
ThreadLocalActiveSpan	activeSpan() Return the active span.
ActiveSpan	makeActive(Span span) Wrap and "make active" a Span by encapsulating it – and any active state (e.g., MDC state) in the current thread – in a new ActiveSpan.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ThreadLocalActiveSpanSource

public ThreadLocalActiveSpanSource()

Method Detail

activeSpan

public ThreadLocalActiveSpan activeSpan()

Description copied from interface: ActiveSpanSource

Return the active span. This does not affect the internal reference count for the ActiveSpan.

If there is an active span, it becomes an implicit parent of any newly-created span at Tracer.SpanBuilder.startActive() time (rather than at Tracer.buildSpan(String) time).

Specified by:

activeSpan in interface ActiveSpanSource

Returns:

the active span, or null if none could be found.

makeActive

public ActiveSpan makeActive(Span span)

Description copied from interface: ActiveSpanSource

Wrap and "make active" a Span by encapsulating it – and any active state (e.g., MDC state) in the current thread – in a new ActiveSpan.

Specified by:

makeActive in interface ActiveSpanSource

Parameters:

span - the Span to wrap in an ActiveSpan

Returns:

an ActiveSpan that encapsulates the given Span and any other ActiveSpanSource-specific context (e.g., the MDC context map)