Package org.axonframework.messaging.tracing

@NullMarked package org.axonframework.messaging.tracing

The tracing API of Axon Framework: SpanFactory, Span, SpanScope, and SpanAttributesProvider, plus the logging and no-op factory implementations.

The delegating tracing decorators live with the components they decorate (for example org.axonframework.messaging.commandhandling.tracing); the configuration sub-package holds the enhancers and settings wiring them, the attributes sub-package the built-in attribute providers and their registry, and the annotation sub-package the per-method handler-span enhancer.

Related Packages

Package	Description
org.axonframework.messaging.tracing.annotation	Annotation-pipeline tracing support for axon-messaging: the handler enhancer producing per-method handler spans, registered conditionally on the HandlerDefinition component by the tracing configuration defaults.
org.axonframework.messaging.tracing.attributes	Built-in SpanAttributesProvider implementations contributing standard message-derived attributes (identifier, type, metadata, aggregate identifier) to spans.
org.axonframework.messaging.tracing.configuration	Configuration support for axon-messaging tracing: the enhancers wiring the tracing decorators and registering the tracing defaults, the per-component tracing settings, and the shared enhancer/decorator ordering constants.

Class	Description
LoggingSpanFactory	A SpanFactory that logs span lifecycle events through SLF4J, for development and debugging when no APM backend is available.
Span	Represents one unit of traced work.
SpanAttributesProvider	Contributes attributes to a Span based on the Message the span is created for.
SpanFactory	The sole public abstraction for creating tracing spans in Axon Framework.
SpanScope	The active-span scope returned by Span.start().