Package org.axonframework.eventhandling

Interface ListenerInvocationErrorHandler

All Known Implementing Classes:

LoggingErrorHandler, PropagatingErrorHandler

public interface ListenerInvocationErrorHandler

Interface of an error handler that is invoked when an exception is triggered as result of an EventMessageHandler handling an event.

Author:

Rene de Waele

Method Summary

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

Method Details

onError

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

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.

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

Throws:

Exception - To stop further handling of the event