org.axonframework.tracing.opentelemetry

Class MetadataContextGetter

java.lang.Object

org.axonframework.tracing.opentelemetry.MetadataContextGetter

All Implemented Interfaces:

io.opentelemetry.context.propagation.TextMapGetter<Message<?>>

public class MetadataContextGetter
extends Object
implements io.opentelemetry.context.propagation.TextMapGetter<Message<?>>

This TextMapGetter implementation is able to extract the parent OpenTelemetry span context from a Message.

The trace parent is part of the message's MetaData, if it was set when dispatching by the MetadataContextSetter. This is done using the SpanFactory.propagateContext(Message) method for the message.

Since:

4.6.0

Author:

Mitchell Herrijgers

Field Summary

Fields

Modifier and Type	Field and Description
static MetadataContextGetter	INSTANCE Singleton instance of the MetadataContextGetter, used by the OpenTelemetrySpanFactory.

Method Summary

Modifier and Type	Method and Description
String	get(Message<?> message, String key)
Iterable<String>	keys(Message<?> message)

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final MetadataContextGetter INSTANCE

Singleton instance of the MetadataContextGetter, used by the OpenTelemetrySpanFactory.

Method Detail

keys

public Iterable<String> keys(Message<?> message)

Specified by:

keys in interface io.opentelemetry.context.propagation.TextMapGetter<Message<?>>

get

public String get(Message<?> message,
                  @Nonnull
                  String key)

Specified by:

get in interface io.opentelemetry.context.propagation.TextMapGetter<Message<?>>