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Spring Cloud Sleuth AutoConfigure
/*
* Copyright 2013-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.cloud.sleuth.autoconfig.instrument.web.client;
import reactor.netty.http.client.HttpClient;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.security.oauth2.resource.UserInfoRestTemplateCustomizer;
import org.springframework.cloud.commons.httpclient.HttpClientConfiguration;
import org.springframework.cloud.gateway.filter.headers.HttpHeadersFilter;
import org.springframework.cloud.sleuth.CurrentTraceContext;
import org.springframework.cloud.sleuth.Tracer;
import org.springframework.cloud.sleuth.autoconfig.brave.BraveAutoConfiguration;
import org.springframework.cloud.sleuth.http.HttpClientHandler;
import org.springframework.cloud.sleuth.instrument.web.client.HttpClientBeanPostProcessor;
import org.springframework.cloud.sleuth.instrument.web.client.LazyTraceClientHttpRequestInterceptor;
import org.springframework.cloud.sleuth.instrument.web.client.TraceDefaultOAuth2UserServiceCustomizer;
import org.springframework.cloud.sleuth.instrument.web.client.TraceRequestHttpHeadersFilter;
import org.springframework.cloud.sleuth.instrument.web.client.TraceResponseHttpHeadersFilter;
import org.springframework.cloud.sleuth.instrument.web.client.TraceRestTemplateBeanPostProcessor;
import org.springframework.cloud.sleuth.instrument.web.client.TraceRestTemplateCustomizer;
import org.springframework.cloud.sleuth.instrument.web.client.TraceUserInfoRestTemplateCustomizer;
import org.springframework.cloud.sleuth.instrument.web.client.TraceWebClientBeanPostProcessor;
import org.springframework.cloud.sleuth.instrument.web.client.UserInfoRestTemplateCustomizerBeanPostProcessor;
import org.springframework.cloud.sleuth.instrument.web.mvc.TracingClientHttpRequestInterceptor;
import org.springframework.cloud.sleuth.propagation.Propagator;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.security.oauth2.client.OAuth2RestTemplate;
import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.reactive.function.client.WebClient;
/**
* {@link org.springframework.boot.autoconfigure.EnableAutoConfiguration
* Auto-configuration} enables span information propagation when using
* {@link RestTemplate}.
*
* @author Marcin Grzejszczak
* @since 1.0.0
*/
@Configuration(proxyBeanMethods = false)
@ConditionalnOnSleuthWebClient
@ConditionalOnBean(Tracer.class)
@AutoConfigureBefore(HttpClientConfiguration.class)
@AutoConfigureAfter(BraveAutoConfiguration.class)
class TraceWebClientAutoConfiguration {
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(RestTemplate.class)
static class RestTemplateConfig {
@Bean
public TracingClientHttpRequestInterceptor tracingClientHttpRequestInterceptor(
CurrentTraceContext currentTraceContext, HttpClientHandler httpClientHandler) {
return (TracingClientHttpRequestInterceptor) TracingClientHttpRequestInterceptor.create(currentTraceContext,
httpClientHandler);
}
@Bean
@Order
TraceRestTemplateCustomizer traceRestTemplateCustomizer(BeanFactory beanFactory) {
return new TraceRestTemplateCustomizer(new LazyTraceClientHttpRequestInterceptor(beanFactory));
}
@Bean
static TraceRestTemplateBeanPostProcessor traceRestTemplateBeanPostProcessor(ListableBeanFactory beanFactory) {
return new TraceRestTemplateBeanPostProcessor(beanFactory);
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(org.springframework.vault.client.RestTemplateCustomizer.class)
@ConditionalOnProperty(value = "spring.sleuth.vault.enabled", matchIfMissing = true)
static class VaultRestTemplateCustomizerConfiguration {
@Bean
@Order(Ordered.HIGHEST_PRECEDENCE)
org.springframework.vault.client.RestTemplateCustomizer traceVaultRestTemplateCustomizer(
TraceRestTemplateCustomizer restTemplateCustomizer) {
return restTemplateCustomizer::customize;
}
}
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(HttpHeadersFilter.class)
@ConditionalOnMissingClass("reactor.netty.http.client.HttpClient")
static class HttpHeadersFilterConfig {
@Bean
HttpHeadersFilter traceRequestHttpHeadersFilter(Tracer tracer, HttpClientHandler handler,
Propagator propagator) {
return new TraceRequestHttpHeadersFilter(tracer, handler, propagator);
}
@Bean
HttpHeadersFilter traceResponseHttpHeadersFilter(Tracer tracer, HttpClientHandler handler,
Propagator propagator) {
return new TraceResponseHttpHeadersFilter(tracer, handler, propagator);
}
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(HttpClient.class)
static class NettyConfiguration {
@Bean
static HttpClientBeanPostProcessor httpClientBeanPostProcessor(ConfigurableApplicationContext springContext) {
return new HttpClientBeanPostProcessor(springContext);
}
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(WebClient.class)
@ConditionalOnProperty(value = "spring.sleuth.web.webclient.enabled", matchIfMissing = true)
static class WebClientConfig {
@Bean
static TraceWebClientBeanPostProcessor traceWebClientBeanPostProcessor(
ConfigurableApplicationContext springContext) {
return new TraceWebClientBeanPostProcessor(springContext);
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(org.springframework.vault.client.WebClientCustomizer.class)
@ConditionalOnProperty(value = "spring.sleuth.vault.enabled", matchIfMissing = true)
static class VaultWebClientCustomizerConfiguration {
@Bean
@Order(Ordered.HIGHEST_PRECEDENCE)
org.springframework.vault.client.WebClientCustomizer traceVaultWebClientCustomizer(
ConfigurableApplicationContext springContext) {
return webClientBuilder -> new TraceWebClientBeanPostProcessor(springContext)
.postProcessAfterInitialization(webClientBuilder, "");
}
}
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass({ UserInfoRestTemplateCustomizer.class, OAuth2RestTemplate.class })
@Deprecated // Use Spring-Security OAuth2 support
protected static class TraceOAuthConfiguration {
@Bean
static UserInfoRestTemplateCustomizerBeanPostProcessor userInfoRestTemplateCustomizerBeanPostProcessor(
BeanFactory beanFactory) {
return new UserInfoRestTemplateCustomizerBeanPostProcessor(beanFactory);
}
@Bean
@ConditionalOnMissingBean
static UserInfoRestTemplateCustomizer traceUserInfoRestTemplateCustomizer(BeanFactory beanFactory) {
return new TraceUserInfoRestTemplateCustomizer(beanFactory);
}
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(DefaultOAuth2UserService.class)
protected static class TraceSpringSecurityOAuth2Configuration {
@Bean
static BeanPostProcessor traceDefaultOAuth2UserServiceBeanPostProcessor(BeanFactory beanFactory) {
return new BeanPostProcessor() {
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (bean instanceof DefaultOAuth2UserService) {
new TraceDefaultOAuth2UserServiceCustomizer(beanFactory)
.customize((DefaultOAuth2UserService) bean);
}
return bean;
}
};
}
}
}