Package org.axonframework.eventhandling.interceptors

Class EventLoggingInterceptor

java.lang.Object

org.axonframework.eventhandling.interceptors.EventLoggingInterceptor

All Implemented Interfaces:

MessageDispatchInterceptor<EventMessage<?>>

public class EventLoggingInterceptor
extends Object
implements MessageDispatchInterceptor<EventMessage<?>>

Message Dispatch Interceptor that logs published events to a SLF4J logger. It does not alter or reject events.

The interceptor also logs the cause of the published events. E.g. if the cause of the events is a command, the interceptor also logs the command and the execution result of the command.

The interceptor allows for configuration of the name under which the logger should log the statements. All logging is done at the INFO level.

Since:

3.0

Author:

Rene de Waele

Constructor Summary

Constructors

Constructor	Description
EventLoggingInterceptor()	Initialize the LoggingInterceptor with the default logger name, which is the fully qualified class name of this logger.
EventLoggingInterceptor(String loggerName)	Initialize the interceptor with the given loggerName.

Method Summary

Modifier and Type	Method	Description
BiFunction<Integer,EventMessage<?>,EventMessage<?>>	handle(List<? extends EventMessage<?>> messages)	Apply this interceptor to the given list of messages.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axonframework.messaging.MessageDispatchInterceptor

handle

Constructor Details

EventLoggingInterceptor

public EventLoggingInterceptor()

Initialize the LoggingInterceptor with the default logger name, which is the fully qualified class name of this logger.

See Also:

• EventLoggingInterceptor(String)

EventLoggingInterceptor

public EventLoggingInterceptor(String loggerName)

Initialize the interceptor with the given loggerName. The actual logging implementation will use this name to decide the appropriate log level and location. See the documentation of your logging implementation for more information.

Parameters:

loggerName - the name of the logger

Method Details

handle

@Nonnull
public BiFunction<Integer,EventMessage<?>,EventMessage<?>> handle(@Nonnull
 List<? extends EventMessage<?>> messages)

Description copied from interface: MessageDispatchInterceptor

Apply this interceptor to the given list of messages. This method returns a function that can be invoked to obtain a modified version of messages at each position in the list.

Specified by:

handle in interface MessageDispatchInterceptor<EventMessage<?>>

Parameters:

messages - The Messages to pre-process

Returns:

a function that processes messages based on their position in the list