Package org.axonframework.eventhandling

Class LoggingErrorHandler

java.lang.Object

org.axonframework.eventhandling.LoggingErrorHandler

All Implemented Interfaces:

ListenerInvocationErrorHandler

public class LoggingErrorHandler
extends Object
implements ListenerInvocationErrorHandler

Implementation of a ListenerInvocationErrorHandler that logs exceptions as errors but otherwise does nothing to prevent event handling from continuing.

Author:

Rene de Waele

Constructor Summary

Constructors

Constructor	Description
LoggingErrorHandler()	Initialize the LoggingErrorHandler using the logger for "org.axonframework.eventhandling.LoggingErrorHandler".
LoggingErrorHandler(org.slf4j.Logger logger)	Initialize the LoggingErrorHandler to use the given logger to log errors

Method Summary

Modifier and Type	Method	Description
void	onError(Exception exception, EventMessage<?> event, EventMessageHandler eventHandler)	Invoked after given eventListener failed to handle given event.

Methods inherited from class java.lang.Object

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

Constructor Details

LoggingErrorHandler

public LoggingErrorHandler()

Initialize the LoggingErrorHandler using the logger for "org.axonframework.eventhandling.LoggingErrorHandler".

LoggingErrorHandler

public LoggingErrorHandler(org.slf4j.Logger logger)

Initialize the LoggingErrorHandler to use the given logger to log errors

Parameters:

logger - the logger to log errors with

Method Details

onError

public void onError(@Nonnull
 Exception exception,
 @Nonnull
 EventMessage<?> event,
 @Nonnull
 EventMessageHandler eventHandler)

Description copied from interface: ListenerInvocationErrorHandler

Invoked after given eventListener failed to handle given event. Implementations have a choice of options for how to continue:

• To ignore this error no special action is required. Processing will continue for this and subsequent events.
• To retry processing the event, implementations can re-invoke EventMessageHandler.handle(EventMessage) on the eventListener once or multiple times.
• To terminate event handling altogether and stop propagating the event to other listeners implementations may throw an exception.

Specified by:

onError in interface ListenerInvocationErrorHandler

Parameters:

exception - The exception thrown by the given eventListener

event - The event that triggered the exception

eventHandler - The listener that failed to handle given event