Package io.axoniq.framework.tracing.micrometer.propagator

Class MetadataPropagatorGetter

java.lang.Object

io.axoniq.framework.tracing.micrometer.propagator.MetadataPropagatorGetter

All Implemented Interfaces:

io.micrometer.tracing.propagation.Propagator.Getter<Metadata>

@Internal
public final class MetadataPropagatorGetter
extends Object
implements io.micrometer.tracing.propagation.Propagator.Getter<Metadata>

Propagator.Getter implementation that extracts a propagated trace context from a message's Metadata.

The trace parent is part of the message metadata when it was set on dispatch by MetadataPropagatorSetter (through Span.propagateContext(org.axonframework.messaging.core.Message)). MicrometerSpanFactory uses this getter to reconstruct the remote parent when creating handler spans, so cross-process parenting works.

This type is Internal because it is an implementation detail of the Micrometer Tracing binding; it is exposed only so MicrometerSpanFactory and tests can reference the shared INSTANCE.

Since:

5.3.0

Author:

Mateusz Nowak

Field Summary

Fields

Modifier and Type	Field	Description
static final MetadataPropagatorGetter	INSTANCE	Shared singleton instance, used by MicrometerSpanFactory.

Fields inherited from interface io.micrometer.tracing.propagation.Propagator.Getter

NOOP

Method Summary

Modifier and Type	Method	Description
@Nullable String	get(Metadata carrier, String key)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.micrometer.tracing.propagation.Propagator.Getter

getAll

Field Details

INSTANCE

public static final MetadataPropagatorGetter INSTANCE

Shared singleton instance, used by MicrometerSpanFactory.

Method Details

get

public @Nullable String get(Metadata carrier,
 String key)

Specified by:

get in interface io.micrometer.tracing.propagation.Propagator.Getter<Metadata>