Keycloak spring boot after login

Getting advice
1

Good day all.

I am struggling finding a way to implement any logic after user gets authenticated.
The idea is, after login, map some data to user and send it to frontend.
The problem is I cannot find a way to catch after authorization/login and add my own logic.

Any suggestion would be very welcome.

Ps. I am new to keycloak and spring security.

Cheers.

2

@KeycloakConfiguration
public class SecurityConfig extends KeycloakWebSecurityConfigurerAdapter {

/**
 * Register Keycloak with the Spring Security authentication manager.
 */
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) {
    SimpleAuthorityMapper grantedAuthorityMapper = new SimpleAuthorityMapper();
    grantedAuthorityMapper.setPrefix("ROLE_");

    KeycloakAuthenticationProvider keycloakAuthenticationProvider = keycloakAuthenticationProvider();
    keycloakAuthenticationProvider.setGrantedAuthoritiesMapper(grantedAuthorityMapper);
    auth.authenticationProvider(keycloakAuthenticationProvider);
}

/**
 * Registers a user session after successful authentication.
 */
@Bean
@Override
protected SessionAuthenticationStrategy sessionAuthenticationStrategy() {
    return new RegisterSessionAuthenticationStrategy(new SessionRegistryImpl());
}

/**
 * Adjusting the bean definition to be loaded conditionally only if
 * no other bean of that type has been defined.
 */
@Bean
@Override
@ConditionalOnMissingBean(HttpSessionManager.class)
protected HttpSessionManager httpSessionManager() {
    return new HttpSessionManager();
}


/**
 * Define Role-Based Access Security Policies
 */
@Override
protected void configure(HttpSecurity http) throws Exception {
    super.configure(http);
    http
            .authorizeRequests()
            .antMatchers("/patient").hasAnyRole("ADMIN", "USER")
            .antMatchers("/manager").hasAnyRole("ADMIN")
            .anyRequest().permitAll();
}