@Bean
public UserInfoRestTemplateCustomizer userInfoRestTemplateCustomizer(
        TraceRestTemplateInterceptor traceRestTemplateInterceptor) {
    return restTemplate -> {
        List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>(
                restTemplate.getInterceptors());
        interceptors.add(traceRestTemplateInterceptor);
        restTemplate.setInterceptors(interceptors);
    };
}
 

@Bean
public UserInfoRestTemplateCustomizer userInfoRestTemplateCustomizer(
        TraceRestTemplateInterceptor traceRestTemplateInterceptor) {
    return restTemplate -> {
        List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>(
                restTemplate.getInterceptors());
        interceptors.add(traceRestTemplateInterceptor);
        restTemplate.setInterceptors(interceptors);
    };
}
 

@Override
public Object postProcessAfterInitialization(final Object bean,
		String beanName) throws BeansException {
	final BeanFactory beanFactory = this.beanFactory;
	if (bean instanceof UserInfoRestTemplateCustomizer
			&& !(bean instanceof TraceUserInfoRestTemplateCustomizer)) {
		return new TraceUserInfoRestTemplateCustomizer(beanFactory, bean);
	}
	return bean;
}
 

@Override
public void customize(OAuth2RestTemplate template) {
	final TracingClientHttpRequestInterceptor interceptor = this.beanFactory
			.getBean(TracingClientHttpRequestInterceptor.class);
	new RestTemplateInterceptorInjector(interceptor).inject(template);
	if (this.delegate != null) {
		((UserInfoRestTemplateCustomizer) this.delegate).customize(template);
	}
}
 

@Bean
public UserInfoRestTemplateCustomizer loadBalancedUserInfoRestTemplateCustomizer(
		final LoadBalancerInterceptor loadBalancerInterceptor) {
	return new UserInfoRestTemplateCustomizer() {
		@Override
		public void customize(OAuth2RestTemplate restTemplate) {
			List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>(
					restTemplate.getInterceptors());
			interceptors.add(loadBalancerInterceptor);
			restTemplate.setInterceptors(interceptors);
		}
	};
}
 

@Bean
public UserInfoRestTemplateCustomizer retryLoadBalancedUserInfoRestTemplateCustomizer(
		final RetryLoadBalancerInterceptor loadBalancerInterceptor) {
	return new UserInfoRestTemplateCustomizer() {
		@Override
		public void customize(OAuth2RestTemplate restTemplate) {
			List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>(
					restTemplate.getInterceptors());
			interceptors.add(loadBalancerInterceptor);
			restTemplate.setInterceptors(interceptors);
		}
	};
}
 

@Bean
@ConditionalOnMissingBean
static UserInfoRestTemplateCustomizer traceUserInfoRestTemplateCustomizer(
		BeanFactory beanFactory) {
	return new TraceUserInfoRestTemplateCustomizer(beanFactory);
}