public class LoggingSpanFactory extends Object implements SpanFactory
SpanFactory that requires no java agent or APM system, only logging. Will log tracing
information to info level, with the following identifying prefix: {spanId}{spanName}.
When traces are related to a message, the message type and identifier are logged as well. If a message is dispatched
while currently handling a message in the UnitOfWork, it will log the
information regarding the message being handled as well.
| Modifier and Type | Field and Description |
|---|---|
static LoggingSpanFactory |
INSTANCE
Singleton instance of the
LoggingSpanFactory. |
| Modifier and Type | Method and Description |
|---|---|
Span |
createDispatchSpan(Supplier<String> operationNameSupplier,
Message<?> parentMessage,
Message<?>... linkedSiblings)
|
Span |
createHandlerSpan(Supplier<String> operationNameSupplier,
Message<?> parentMessage,
boolean isChildTrace,
Message<?>... linkedParents)
|
Span |
createInternalSpan(Supplier<String> operationNameSupplier)
Creates a new
Span linked to the currently active span. |
Span |
createInternalSpan(Supplier<String> operationNameSupplier,
Message<?> message)
Creates a new
Span linked to the currently active span. |
Span |
createRootTrace(Supplier<String> operationNameSupplier)
Creates a new
Span without any parent trace. |
<M extends Message<?>> |
propagateContext(M message)
Propagates the currently active trace and span to the message.
|
void |
registerSpanAttributeProvider(SpanAttributesProvider provider)
Registers an additional
SpanAttributesProvider to the factory. |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitcreateChildHandlerSpan, createLinkedHandlerSpanpublic static final LoggingSpanFactory INSTANCE
LoggingSpanFactory.public Span createRootTrace(Supplier<String> operationNameSupplier)
SpanFactorySpan without any parent trace. This should be used for logical start point of asynchronous
calls that are not related to a message. For example snapshotting an aggregate.
In monitoring systems, this Span will be the root of the trace.
createRootTrace in interface SpanFactoryoperationNameSupplier - Supplier of the operation's name.Span.public Span createHandlerSpan(Supplier<String> operationNameSupplier, Message<?> parentMessage, boolean isChildTrace, Message<?>... linkedParents)
SpanFactorySpan linked to asynchronously handling a Message, for example when handling a
command from Axon Server. The message attributes will be added to the span, based on the provided
SpanAttributesProviders for additional debug information.
In monitoring systems, this Span will be the root of the trace.
The message's name will be concatenated with the operationName, see
SpanUtils.determineMessageName(Message).
createHandlerSpan in interface SpanFactoryoperationNameSupplier - Supplier of the operation's name.parentMessage - The message that is being handled.isChildTrace - Whether to force the span to be a part of the current trace. This means not linking, but
setting a parent.linkedParents - Optional parameter, providing this will link the provided message(s) to the current, in
addition to the original.Span.public Span createDispatchSpan(Supplier<String> operationNameSupplier, Message<?> parentMessage, Message<?>... linkedSiblings)
SpanFactorySpan linked to dispatching a Message, for example when sending a command to Axon
Server. The message attributes will be added to the span, based on the provided
SpanAttributesProviders for additional debug information.
In monitoring systems, this Span will be part of another trace.
Before asynchronously dispatching a message, add the tracing context to the message, using
SpanFactory.propagateContext(Message) to the message's metadata.
The message's name will be concatenated with the operationName, see
SpanUtils.determineMessageName(Message).
createDispatchSpan in interface SpanFactoryoperationNameSupplier - Supplier of the operation's name.parentMessage - The message that is being handled.linkedSiblings - Optional parameter, providing this will link the provided messages to the current.Span.public Span createInternalSpan(Supplier<String> operationNameSupplier)
SpanFactorySpan linked to the currently active span. This is useful for tracing different parts of
framework logic, so we can time what has the most impact.
In monitoring systems, this Span will be part of another trace.
createInternalSpan in interface SpanFactoryoperationNameSupplier - Supplier of the operation's name.Span.public Span createInternalSpan(Supplier<String> operationNameSupplier, Message<?> message)
SpanFactorySpan linked to the currently active span. This is useful for tracing different parts of
framework logic, so we can time what has the most impact.
The message supplied is used to provide a clearer name, based on SpanUtils.determineMessageName(Message),
and to add the message's attributes to the span.
In monitoring systems, this Span will be part of another trace.
createInternalSpan in interface SpanFactoryoperationNameSupplier - Supplier of the operation's name.Span.public void registerSpanAttributeProvider(SpanAttributesProvider provider)
SpanFactorySpanAttributesProvider to the factory.registerSpanAttributeProvider in interface SpanFactoryprovider - The provider to add.public <M extends Message<?>> M propagateContext(M message)
SpanFactorySpanFactory.createLinkedHandlerSpan(Supplier, Message, Message[]) method. The most efficient method
currently known is to enhance the message's metadata.
Since messages are immutable, the method returns the enhanced message. This enhanced message should be used during dispatch instead of the original message.
propagateContext in interface SpanFactoryM - The message's type.message - The message to enhance.Copyright © 2010–2023. All rights reserved.