Authentication Events

For each authentication that succeeds or fails, a AuthenticationSuccessEvent or AbstractAuthenticationFailureEvent is fired, respectively.

To listen for these events, you must first publish an AuthenticationEventPublisher. Spring Security’s DefaultAuthenticationEventPublisher will probably do fine:

Java

@Bean
public AuthenticationEventPublisher authenticationEventPublisher
        (ApplicationEventPublisher applicationEventPublisher) {
    return new DefaultAuthenticationEventPublisher(applicationEventPublisher);
}

Kotlin

@Bean
fun authenticationEventPublisher
        (applicationEventPublisher: ApplicationEventPublisher?): AuthenticationEventPublisher {
    return DefaultAuthenticationEventPublisher(applicationEventPublisher)
}

Then, you can use Spring’s @EventListener support:

Java

@Component
public class AuthenticationEvents {
	@EventListener
    public void onSuccess(AuthenticationSuccessEvent success) {
		// ...
    }

    @EventListener
    public void onFailure(AbstractAuthenticationFailureEvent failures) {
		// ...
    }
}

Kotlin

@Component
class AuthenticationEvents {
    @EventListener
    fun onSuccess(success: AuthenticationSuccessEvent?) {
        // ...
    }

    @EventListener
    fun onFailure(failures: AbstractAuthenticationFailureEvent?) {
        // ...
    }
}

While similar to AuthenticationSuccessHandler and AuthenticationFailureHandler, these are nice in that they can be used independently from the servlet API.

Adding Exception Mappings

DefaultAuthenticationEventPublisher by default will publish an AbstractAuthenticationFailureEvent for the following events:

Exception

Event

BadCredentialsException

AuthenticationFailureBadCredentialsEvent

UsernameNotFoundException

AuthenticationFailureBadCredentialsEvent

AccountExpiredException

AuthenticationFailureExpiredEvent

ProviderNotFoundException

AuthenticationFailureProviderNotFoundEvent

DisabledException

AuthenticationFailureDisabledEvent

LockedException

AuthenticationFailureLockedEvent

AuthenticationServiceException

AuthenticationFailureServiceExceptionEvent

CredentialsExpiredException

AuthenticationFailureCredentialsExpiredEvent

InvalidBearerTokenException

AuthenticationFailureBadCredentialsEvent

The publisher does an exact Exception match, which means that sub-classes of these exceptions won’t also produce events.

To that end, you may want to supply additional mappings to the publisher via the setAdditionalExceptionMappings method:

Java

@Bean
public AuthenticationEventPublisher authenticationEventPublisher
        (ApplicationEventPublisher applicationEventPublisher) {
    Map<Class<? extends AuthenticationException>,
        Class<? extends AbstractAuthenticationFailureEvent>> mapping =
            Collections.singletonMap(FooException.class, FooEvent.class);
    AuthenticationEventPublisher authenticationEventPublisher =
        new DefaultAuthenticationEventPublisher(applicationEventPublisher);
    authenticationEventPublisher.setAdditionalExceptionMappings(mapping);
    return authenticationEventPublisher;
}

Kotlin

@Bean
fun authenticationEventPublisher
        (applicationEventPublisher: ApplicationEventPublisher?): AuthenticationEventPublisher {
    val mapping: Map<Class<out AuthenticationException>, Class<out AbstractAuthenticationFailureEvent>> =
            mapOf(Pair(FooException::class.java, FooEvent::class.java))
    val authenticationEventPublisher = DefaultAuthenticationEventPublisher(applicationEventPublisher)
    authenticationEventPublisher.setAdditionalExceptionMappings(mapping)
    return authenticationEventPublisher
}

Default Event

And, you can supply a catch-all event to fire in the case of any AuthenticationException:

Java

@Bean
public AuthenticationEventPublisher authenticationEventPublisher
        (ApplicationEventPublisher applicationEventPublisher) {
    AuthenticationEventPublisher authenticationEventPublisher =
        new DefaultAuthenticationEventPublisher(applicationEventPublisher);
    authenticationEventPublisher.setDefaultAuthenticationFailureEvent
        (GenericAuthenticationFailureEvent.class);
    return authenticationEventPublisher;
}

Kotlin

@Bean
fun authenticationEventPublisher
        (applicationEventPublisher: ApplicationEventPublisher?): AuthenticationEventPublisher {
    val authenticationEventPublisher = DefaultAuthenticationEventPublisher(applicationEventPublisher)
    authenticationEventPublisher.setDefaultAuthenticationFailureEvent(GenericAuthenticationFailureEvent::class.java)
    return authenticationEventPublisher
}