@Bean
public SmartInitializingSingleton loadBalancedAsyncRestTemplateInitializer2(
        final List<AsyncRestTemplateCustomizer> customizers) {
    return new SmartInitializingSingleton() {
        @Override
        public void afterSingletonsInstantiated() {
            logger.info("init AsyncRestTemplateCircuitBreaker start");
            for (AsyncRestTemplate restTemplate : AsyncRestTemplateCircuitBreakerAutoConfiguration.this
                    .restTemplates) {
                AsyncRestTemplateCircuitInterceptor interceptor =
                        new AsyncRestTemplateCircuitInterceptor(circuitBreakerCore);
                logger.info("add AsyncRestTemplateCircuitInterceptor first");
                List<AsyncClientHttpRequestInterceptor> interceptors = restTemplate.getInterceptors();
                interceptors.add(0, interceptor);
                restTemplate.setInterceptors(interceptors);
            }
            logger.info("init AsyncRestTemplateCircuitBreaker end");
        }
    };
}
 

@Bean
public SmartInitializingSingleton loadBalancedRestTemplateInitializer2(
        final ObjectProvider<List<RestTemplateCustomizer>> restTemplateCustomizers) {
    return () -> {
        logger.info("RestTemplateResilienceAutoConfiguration init2");
        for (RestTemplate restTemplate : RestTemplateCircuitBreakerAutoConfiguration.this.restTemplates) {
            List<ClientHttpRequestInterceptor> interceptors = restTemplate.getInterceptors();
            logger.info("RestTemplate init2 start,interceptor size:" + interceptors.size());
            //for (ClientHttpRequestInterceptor interceptor : interceptors) {
            //logger.info("RestTemplate init2 interceptor ing:"+interceptor.getClass().getCanonicalName());
            //}
            //logger.info("RestTemplate init2 Customizer end");
            ClientHttpRequestInterceptor interceptor1 = new RestTemplateCircuitBreakerInterceptor
                    (circuitBreakerCore);
            interceptors.add(0, interceptor1);
            restTemplate.setInterceptors(interceptors);
            logger.info("RestTemplate init2 end,add CircuitBreaker interceptor");
        }
    };
}
 

@Bean
public SmartInitializingSingleton loadBalancedAsyncRestTemplateInitializer2(
        final List<AsyncRestTemplateCustomizer> customizers) {
    return new SmartInitializingSingleton() {
        @Override
        public void afterSingletonsInstantiated() {
            logger.info("Init AsyncRestTemplateRateLimiterConfiguration");
            for (AsyncRestTemplate restTemplate : AsyncRestTemplateRateLimiterConfiguration.this.restTemplates) {
                List<AsyncClientHttpRequestInterceptor> interceptors = restTemplate.getInterceptors();
                logger.debug("AsyncRestTemplate init start, interceptor size:" + interceptors.size());
                AsyncClientHttpRequestInterceptor interceptor =
                        new AsyncRestTemplateRateLimiterInterceptor(serviceName);
                interceptors.add(0, interceptor);
                logger.debug("AsyncRestTemplate init end, Add AsyncRestTemplateRateLimiterInterceptor");
                restTemplate.setInterceptors(interceptors);
            }
        }
    };
}
 

@Bean
public SmartInitializingSingleton loadBalancedRestTemplateInitializer3(
        final ObjectProvider<List<RestTemplateCustomizer>> restTemplateCustomizers) {
    return () -> {
        logger.info("Init RestTemplateRateLimiterAutoConfiguration");
        for (RestTemplate restTemplate : RestTemplateRateLimiterAutoConfiguration.this.restTemplates) {
            List<ClientHttpRequestInterceptor> interceptors = restTemplate.getInterceptors();
            logger.debug("RestTemplate init start, interceptor size:" + interceptors.size());
            ClientHttpRequestInterceptor interceptor = new RestTemplateRateLimiterInterceptor(serviceName);
            interceptors.add(0, interceptor);
            restTemplate.setInterceptors(interceptors);
            logger.debug("RestTemplate init end, add RestTemplateRateLimiterInterceptor");
        }
    };
}
 

@Bean
public SmartInitializingSingleton metricsAsyncRestTemplateInitializer(
    final ObjectProvider<List<AsyncRestTemplate>> asyncRestTemplatesProvider,
    final RestTemplatePostProcessor customizer) {
    return () -> {
        final List<AsyncRestTemplate> asyncRestTemplates = asyncRestTemplatesProvider.getIfAvailable();
        if (!CollectionUtils.isEmpty(asyncRestTemplates)) {
            asyncRestTemplates.forEach(customizer::customize);
        }
    };
}
 

@Bean
public SmartInitializingSingleton metricsRestTemplateInitializer(
    final ObjectProvider<List<RestTemplate>> restTemplatesProvider,
    final RestTemplatePostProcessor customizer) {
    return () -> {
        final List<RestTemplate> restTemplates = restTemplatesProvider.getIfAvailable();
        if (!CollectionUtils.isEmpty(restTemplates)) {
            restTemplates.forEach(customizer::customize);
        }
    };
}
 

@Bean
public SmartInitializingSingleton loadBalancedRestTemplateInitializerDeprecated(
		final ObjectProvider<List<RestTemplateCustomizer>> restTemplateCustomizers) {
	return () -> restTemplateCustomizers.ifAvailable(customizers -> {
		for (RestTemplate restTemplate : LoadBalancerAutoConfiguration.this.restTemplates) {
			for (RestTemplateCustomizer customizer : customizers) {
				customizer.customize(restTemplate);
			}
		}
	});
}
 

@Bean
public SmartInitializingSingleton loadBalancedAsyncRestTemplateInitializer(
		final List<AsyncRestTemplateCustomizer> customizers) {
	return () -> {
		for (AsyncRestTemplate restTemplate : AsyncRestTemplateCustomizerConfig.this.restTemplates) {
			for (AsyncRestTemplateCustomizer customizer : customizers) {
				customizer.customize(restTemplate);
			}
		}
	};
}