spring-security/docs/modules/ROOT/pages/migration/reactive.adoc

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= Reactive
If you have already performed the xref:migration/index.adoc[initial migration steps] for your Reactive application, you're now ready to perform steps specific to Reactive applications.
== Use `AuthorizationManager` for Method Security
In 6.0, `@EnableReactiveMethodSecurity` defaults `useAuthorizationManager` to `true`.
So, to complete migration, {security-api-url}org/springframework/security/config/annotation/method/configuration/EnableReactiveMethodSecurity.html[`@EnableReactiveMethodSecurity`] remove the `useAuthorizationManager` attribute:
====
.Java
[source,java,role="primary"]
----
@EnableReactiveMethodSecurity(useAuthorizationManager = true)
----
.Kotlin
[source,kotlin,role="secondary"]
----
@EnableReactiveMethodSecurity(useAuthorizationManager = true)
----
====
changes to:
====
.Java
[source,java,role="primary"]
----
@EnableReactiveMethodSecurity
----
.Kotlin
[source,kotlin,role="secondary"]
----
@EnableReactiveMethodSecurity
----
====
== Propagate ``AuthenticationServiceException``s
{security-api-url}org/springframework/security/web/server/authentication/AuthenticationWebFilter.html[`AuthenticationWebFilter`] propagates {security-api-url}org/springframework/security/authentication/AuthenticationServiceException.html[``AuthenticationServiceException``]s to the {security-api-url}org/springframework/security/web/server/ServerAuthenticationEntryPoint.html[`ServerAuthenticationEntryPoint`].
Because ``AuthenticationServiceException``s represent a server-side error instead of a client-side error, in 6.0, this changes to propagate them to the container.
So, if you opted into this behavior by setting `rethrowAuthenticationServiceException` too `true`, you can now remove it like so:
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.Java
[source,java,role="primary"]
----
AuthenticationFailureHandler bearerFailureHandler = new ServerAuthenticationEntryPointFailureHandler(bearerEntryPoint);
bearerFailureHandler.setRethrowAuthenticationServiceException(true);
AuthenticationFailureHandler basicFailureHandler = new ServerAuthenticationEntryPointFailureHandler(basicEntryPoint);
basicFailureHandler.setRethrowAuthenticationServiceException(true);
----
.Kotlin
[source,kotlin,role="secondary"]
----
val bearerFailureHandler: AuthenticationFailureHandler = ServerAuthenticationEntryPointFailureHandler(bearerEntryPoint)
bearerFailureHandler.setRethrowAuthenticationServiceException(true)
val basicFailureHandler: AuthenticationFailureHandler = ServerAuthenticationEntryPointFailureHandler(basicEntryPoint)
basicFailureHandler.setRethrowAuthenticationServiceException(true)
----
====
changes to:
====
.Java
[source,java,role="primary"]
----
AuthenticationFailureHandler bearerFailureHandler = new ServerAuthenticationEntryPointFailureHandler(bearerEntryPoint);
AuthenticationFailureHandler basicFailureHandler = new ServerAuthenticationEntryPointFailureHandler(basicEntryPoint);
----
.Kotlin
[source,kotlin,role="secondary"]
----
val bearerFailureHandler: AuthenticationFailureHandler = ServerAuthenticationEntryPointFailureHandler(bearerEntryPoint)
val basicFailureHandler: AuthenticationFailureHandler = ServerAuthenticationEntryPointFailureHandler(basicEntryPoint)
----
====
[NOTE]
====
If you configured the `ServerAuthenticationFailureHandler` only for the purpose of updating to 6.0, you can remove it completely.
====