Spring Security [Question] How to register custom AuthenticationProvider in reactive programming model

I'm trying to register my own AuthenticationProvider.

My config:

@EnableWebFluxSecurity
class SecurityConfig {

  @Bean
  fun customAuthenticationProvider(): CustomAuthenticationProvider {
    return CustomAuthenticationProvider()
  }

  @Bean
  fun securityWebFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
    return http.authorizeExchange()
        .anyExchange().authenticated()
        .and().build()
  }
}

But since I use webflux I cannot use WebSecurityConfigurerAdapter.

What is correct way to enable such AuthenticationProvider?

Comment From: kkocel

@rwinch @rstoyanchev Hey guys maybe you can help me out with this?

Comment From: rwinch

Reactive Spring Security does not use an AuthenticationProvider. You can create a Bean of type ReactiveAuthenticationManager instead.

Comment From: d3bt3ch

@rwinch If I provide a custom ReactiveAuthenticationManager do I need to provided a ReactiveUserDetailsService ? In my use case I purposely do not want to provide a ReactiveUserDetailsService. Please suggest.