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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.brave;
import java.io.Closeable;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Function;
import brave.Tracing;
import brave.handler.SpanHandler;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cloud.sleuth.SpanCustomizer;
import org.springframework.cloud.sleuth.autoconfig.SleuthBaggageProperties;
import org.springframework.cloud.sleuth.brave.bridge.BraveBaggageManager;
import org.springframework.cloud.sleuth.brave.bridge.BraveContextWrappingFunction;
import org.springframework.cloud.sleuth.brave.bridge.BraveCurrentTraceContext;
import org.springframework.cloud.sleuth.brave.bridge.BravePropagator;
import org.springframework.cloud.sleuth.brave.bridge.BraveSpanCustomizer;
import org.springframework.cloud.sleuth.brave.bridge.BraveTracer;
import org.springframework.cloud.sleuth.brave.bridge.CompositePropagationFactorySupplier;
import org.springframework.cloud.sleuth.brave.bridge.CompositeSpanHandler;
import org.springframework.cloud.sleuth.brave.propagation.PropagationFactorySupplier;
import org.springframework.cloud.sleuth.exporter.SpanFilter;
import org.springframework.cloud.sleuth.exporter.SpanReporter;
import org.springframework.cloud.sleuth.instrument.reactor.ReactorSleuth;
import org.springframework.cloud.sleuth.propagation.Propagator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration(proxyBeanMethods = false)
@EnableConfigurationProperties(SleuthPropagationProperties.class)
class BraveBridgeConfiguration {
@Bean
org.springframework.cloud.sleuth.Tracer braveTracer(brave.Tracer tracer,
org.springframework.cloud.sleuth.CurrentTraceContext braveCurrentTraceContext) {
return new BraveTracer(tracer, braveCurrentTraceContext, new BraveBaggageManager());
}
@Bean
org.springframework.cloud.sleuth.CurrentTraceContext braveCurrentTraceContext(
brave.propagation.CurrentTraceContext currentTraceContext) {
return new BraveCurrentTraceContext(currentTraceContext);
}
@Bean
SpanCustomizer braveSpanCustomizer(brave.SpanCustomizer spanCustomizer) {
return new BraveSpanCustomizer(spanCustomizer);
}
@Bean
Propagator bravePropagator(Tracing tracing) {
return new BravePropagator(tracing);
}
@Bean
@ConditionalOnMissingBean
PropagationFactorySupplier compositePropagationFactorySupplier(BeanFactory beanFactory,
SleuthBaggageProperties baggageProperties, SleuthPropagationProperties properties) {
return new CompositePropagationFactorySupplier(beanFactory, baggageProperties.getLocalFields(),
properties.getType());
}
// Name is important for sampling conditions
@Bean(name = "traceCompositeSpanHandler")
SpanHandler compositeSpanHandler(ObjectProvider> exporters,
ObjectProvider> reporters) {
return new CompositeSpanHandler(exporters.getIfAvailable(ArrayList::new),
reporters.getIfAvailable(ArrayList::new));
}
@Bean
@ConditionalOnClass(name = "reactor.util.context.Context")
static BraveReactorContextBeanDefinitionRegistryPostProcessor braveReactorContextBeanDefinitionRegistryPostProcessor() {
return new BraveReactorContextBeanDefinitionRegistryPostProcessor();
}
static class BraveReactorContextBeanDefinitionRegistryPostProcessor
implements BeanDefinitionRegistryPostProcessor, Closeable {
private static final Log log = LogFactory.getLog(BraveReactorContextBeanDefinitionRegistryPostProcessor.class);
@Override
public void close() throws IOException {
ReactorSleuth.contextWrappingFunction = Function.identity();
}
@Override
public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
ReactorSleuth.contextWrappingFunction = new BraveContextWrappingFunction();
if (log.isDebugEnabled()) {
log.debug("Wrapped Reactor's context into a Brave representation");
}
}
@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
}
}
}