How to use

ServerHttpSecurity$OAuth2LoginSpec

in

org.springframework.security.config.web.server

this.oauth2Login.configure(this);

protected void configure(ServerHttpSecurity http) {
  ReactiveClientRegistrationRepository clientRegistrationRepository = getClientRegistrationRepository();
  ServerOAuth2AuthorizedClientRepository authorizedClientRepository = getAuthorizedClientRepository();
  OAuth2AuthorizationRequestRedirectWebFilter oauthRedirectFilter = getRedirectWebFilter();
  ReactiveAuthenticationManager manager = getAuthenticationManager();
  AuthenticationWebFilter authenticationFilter = new OAuth2LoginAuthenticationWebFilter(manager, authorizedClientRepository);
  authenticationFilter.setRequiresAuthenticationMatcher(getAuthenticationMatcher());
  authenticationFilter.setServerAuthenticationConverter(getAuthenticationConverter(clientRegistrationRepository));
  RedirectServerAuthenticationSuccessHandler redirectHandler = new RedirectServerAuthenticationSuccessHandler();
  authenticationFilter.setAuthenticationSuccessHandler(redirectHandler);
  authenticationFilter.setAuthenticationFailureHandler(new ServerAuthenticationFailureHandler() {
    @Override
    public Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange,
        AuthenticationException exception) {
      return Mono.error(exception);
    }
  });
  authenticationFilter.setSecurityContextRepository(new WebSessionServerSecurityContextRepository());
  MediaTypeServerWebExchangeMatcher htmlMatcher = new MediaTypeServerWebExchangeMatcher(
      MediaType.TEXT_HTML);
  htmlMatcher.setIgnoredMediaTypes(Collections.singleton(MediaType.ALL));
  Map<String, String> urlToText = http.oauth2Login.getLinks();
  if (urlToText.size() == 1) {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint(urlToText.keySet().iterator().next())));
  } else {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint("/login")));
  }
  http.addFilterAt(oauthRedirectFilter, SecurityWebFiltersOrder.HTTP_BASIC);
  http.addFilterAt(authenticationFilter, SecurityWebFiltersOrder.AUTHENTICATION);
}

this.oauth2Login.configure(this);

protected void configure(ServerHttpSecurity http) {
  ReactiveClientRegistrationRepository clientRegistrationRepository = getClientRegistrationRepository();
  ServerOAuth2AuthorizedClientRepository authorizedClientRepository = getAuthorizedClientRepository();
  OAuth2AuthorizationRequestRedirectWebFilter oauthRedirectFilter = new OAuth2AuthorizationRequestRedirectWebFilter(clientRegistrationRepository);
  ReactiveAuthenticationManager manager = getAuthenticationManager();
  AuthenticationWebFilter authenticationFilter = new OAuth2LoginAuthenticationWebFilter(manager, authorizedClientRepository);
  authenticationFilter.setRequiresAuthenticationMatcher(createAttemptAuthenticationRequestMatcher());
  authenticationFilter.setServerAuthenticationConverter(getAuthenticationConverter(clientRegistrationRepository));
  RedirectServerAuthenticationSuccessHandler redirectHandler = new RedirectServerAuthenticationSuccessHandler();
  authenticationFilter.setAuthenticationSuccessHandler(redirectHandler);
  authenticationFilter.setAuthenticationFailureHandler(new ServerAuthenticationFailureHandler() {
    @Override
    public Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange,
        AuthenticationException exception) {
      return Mono.error(exception);
    }
  });
  authenticationFilter.setSecurityContextRepository(new WebSessionServerSecurityContextRepository());
  MediaTypeServerWebExchangeMatcher htmlMatcher = new MediaTypeServerWebExchangeMatcher(
      MediaType.TEXT_HTML);
  htmlMatcher.setIgnoredMediaTypes(Collections.singleton(MediaType.ALL));
  Map<String, String> urlToText = http.oauth2Login.getLinks();
  if (urlToText.size() == 1) {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint(urlToText.keySet().iterator().next())));
  } else {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint("/login")));
  }
  http.addFilterAt(oauthRedirectFilter, SecurityWebFiltersOrder.HTTP_BASIC);
  http.addFilterAt(authenticationFilter, SecurityWebFiltersOrder.AUTHENTICATION);
}

private ServerOAuth2AuthorizedClientRepository getAuthorizedClientRepository() {
  ServerOAuth2AuthorizedClientRepository result = this.authorizedClientRepository;
  if (result == null) {
    result = getBeanOrNull(ServerOAuth2AuthorizedClientRepository.class);
  }
  if (result == null) {
    ReactiveOAuth2AuthorizedClientService authorizedClientService = getAuthorizedClientService();
    if (authorizedClientService != null) {
      result = new AuthenticatedPrincipalServerOAuth2AuthorizedClientRepository(
          authorizedClientService);
    }
  }
  return result;
}

/**
 * Gets the {@link ReactiveAuthenticationManager} to use. First tries an explicitly configured manager, and
 * defaults to {@link OAuth2AuthorizationCodeReactiveAuthenticationManager}
 *
 * @return the {@link ReactiveAuthenticationManager} to use
 */
private ReactiveAuthenticationManager getAuthenticationManager() {
  if (this.authenticationManager == null) {
    this.authenticationManager = createDefault();
  }
  return this.authenticationManager;
}

private ReactiveOAuth2AuthorizedClientService getAuthorizedClientService() {
  ReactiveOAuth2AuthorizedClientService service = getBeanOrNull(ReactiveOAuth2AuthorizedClientService.class);
  if (service == null) {
    service = new InMemoryReactiveOAuth2AuthorizedClientService(getClientRegistrationRepository());
  }
  return service;
}

public OAuth2LoginSpec oauth2Login() {
  if (this.oauth2Login == null) {
    this.oauth2Login = new OAuth2LoginSpec();
  }
  return this.oauth2Login;
}

this.oauth2Login.configure(this);

protected void configure(ServerHttpSecurity http) {
  ReactiveClientRegistrationRepository clientRegistrationRepository = getClientRegistrationRepository();
  ServerOAuth2AuthorizedClientRepository authorizedClientRepository = getAuthorizedClientRepository();
  OAuth2AuthorizationRequestRedirectWebFilter oauthRedirectFilter = new OAuth2AuthorizationRequestRedirectWebFilter(clientRegistrationRepository);
  ReactiveAuthenticationManager manager = getAuthenticationManager();
  AuthenticationWebFilter authenticationFilter = new OAuth2LoginAuthenticationWebFilter(manager, authorizedClientRepository);
  authenticationFilter.setRequiresAuthenticationMatcher(createAttemptAuthenticationRequestMatcher());
  authenticationFilter.setServerAuthenticationConverter(getAuthenticationConverter(clientRegistrationRepository));
  RedirectServerAuthenticationSuccessHandler redirectHandler = new RedirectServerAuthenticationSuccessHandler();
  authenticationFilter.setAuthenticationSuccessHandler(redirectHandler);
  authenticationFilter.setAuthenticationFailureHandler(new ServerAuthenticationFailureHandler() {
    @Override
    public Mono<Void> onAuthenticationFailure(WebFilterExchange webFilterExchange,
        AuthenticationException exception) {
      return Mono.error(exception);
    }
  });
  authenticationFilter.setSecurityContextRepository(new WebSessionServerSecurityContextRepository());
  MediaTypeServerWebExchangeMatcher htmlMatcher = new MediaTypeServerWebExchangeMatcher(
      MediaType.TEXT_HTML);
  htmlMatcher.setIgnoredMediaTypes(Collections.singleton(MediaType.ALL));
  Map<String, String> urlToText = http.oauth2Login.getLinks();
  if (urlToText.size() == 1) {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint(urlToText.keySet().iterator().next())));
  } else {
    http.defaultEntryPoints.add(new DelegateEntry(htmlMatcher, new RedirectServerAuthenticationEntryPoint("/login")));
  }
  http.addFilterAt(oauthRedirectFilter, SecurityWebFiltersOrder.HTTP_BASIC);
  http.addFilterAt(authenticationFilter, SecurityWebFiltersOrder.AUTHENTICATION);
}

private ServerOAuth2AuthorizedClientRepository getAuthorizedClientRepository() {
  ServerOAuth2AuthorizedClientRepository result = this.authorizedClientRepository;
  if (result == null) {
    result = getBeanOrNull(ServerOAuth2AuthorizedClientRepository.class);
  }
  if (result == null) {
    ReactiveOAuth2AuthorizedClientService authorizedClientService = getAuthorizedClientService();
    if (authorizedClientService != null) {
      result = new AuthenticatedPrincipalServerOAuth2AuthorizedClientRepository(
          authorizedClientService);
    }
  }
  return result;
}

private ReactiveOAuth2AuthorizedClientService getAuthorizedClientService() {
  ReactiveOAuth2AuthorizedClientService service = getBeanOrNull(ReactiveOAuth2AuthorizedClientService.class);
  if (service == null) {
    service = new InMemoryReactiveOAuth2AuthorizedClientService(getClientRegistrationRepository());
  }
  return service;
}

/**
 * Gets the {@link ReactiveAuthenticationManager} to use. First tries an explicitly configured manager, and
 * defaults to {@link OAuth2AuthorizationCodeReactiveAuthenticationManager}
 *
 * @return the {@link ReactiveAuthenticationManager} to use
 */
private ReactiveAuthenticationManager getAuthenticationManager() {
  if (this.authenticationManager == null) {
    this.authenticationManager = createDefault();
  }
  return this.authenticationManager;
}

public OAuth2LoginSpec oauth2Login() {
  if (this.oauth2Login == null) {
    this.oauth2Login = new OAuth2LoginSpec();
  }
  return this.oauth2Login;
}

private ServerOAuth2AuthorizedClientRepository getAuthorizedClientRepository() {
  ServerOAuth2AuthorizedClientRepository result = this.authorizedClientRepository;
  if (result == null) {
    result = getBeanOrNull(ServerOAuth2AuthorizedClientRepository.class);
  }
  if (result == null) {
    ReactiveOAuth2AuthorizedClientService authorizedClientService = getAuthorizedClientService();
    if (authorizedClientService != null) {
      result = new AuthenticatedPrincipalServerOAuth2AuthorizedClientRepository(
          authorizedClientService);
    }
  }
  return result;
}

/**
 * Gets the {@link ReactiveAuthenticationManager} to use. First tries an explicitly configured manager, and
 * defaults to {@link OAuth2AuthorizationCodeReactiveAuthenticationManager}
 *
 * @return the {@link ReactiveAuthenticationManager} to use
 */
private ReactiveAuthenticationManager getAuthenticationManager() {
  if (this.authenticationManager == null) {
    this.authenticationManager = createDefault();
  }
  return this.authenticationManager;
}

private ServerWebExchangeMatcher getAuthenticationMatcher() {
  if (this.authenticationMatcher == null) {
    this.authenticationMatcher = createAttemptAuthenticationRequestMatcher();
  }
  return this.authenticationMatcher;
}

private ReactiveOAuth2AuthorizedClientService getAuthorizedClientService() {
  ReactiveOAuth2AuthorizedClientService service = getBeanOrNull(ReactiveOAuth2AuthorizedClientService.class);
  if (service == null) {
    service = new InMemoryReactiveOAuth2AuthorizedClientService(getClientRegistrationRepository());
  }
  return service;
}

private OAuth2AuthorizationRequestRedirectWebFilter getRedirectWebFilter() {
  OAuth2AuthorizationRequestRedirectWebFilter oauthRedirectFilter;
  if (this.authorizationRequestResolver == null) {
    oauthRedirectFilter = new OAuth2AuthorizationRequestRedirectWebFilter(getClientRegistrationRepository());
  } else {
    oauthRedirectFilter = new OAuth2AuthorizationRequestRedirectWebFilter(this.authorizationRequestResolver);
  }
  return oauthRedirectFilter;
}

public OAuth2LoginSpec oauth2Login() {
  if (this.oauth2Login == null) {
    this.oauth2Login = new OAuth2LoginSpec();
  }
  return this.oauth2Login;
}