org.springframework.cloud.sleuth.autoconfig.instrument.jdbc.TraceDataSourceDecoratorBeanPostProcessor Maven / Gradle / Ivy
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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.jdbc;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import java.util.stream.Collectors;
import javax.sql.DataSource;
import com.zaxxer.hikari.HikariDataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.scope.ScopedProxyUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.cloud.sleuth.instrument.jdbc.DataSourceDecorator;
import org.springframework.cloud.sleuth.instrument.jdbc.DataSourceNameResolver;
import org.springframework.cloud.sleuth.instrument.jdbc.DataSourceWrapper;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.AnnotationAwareOrderComparator;
import org.springframework.util.ClassUtils;
/**
* {@link BeanPostProcessor} that wraps all data source beans in {@link DataSource}
* proxies specified in property 'spring.datasource.type'.
*
* @author Arthur Gavlyukovskiy
* @since 3.1.0
*/
public class TraceDataSourceDecoratorBeanPostProcessor implements BeanPostProcessor, Ordered, ApplicationContextAware {
private static final Log log = LogFactory.getLog(TraceDataSourceDecoratorBeanPostProcessor.class);
private final static boolean HIKARI_AVAILABLE = ClassUtils.isPresent("com.zaxxer.hikari.HikariDataSource",
DataSourceNameResolver.class.getClassLoader());
private ApplicationContext applicationContext;
private DataSourceNameResolver dataSourceNameResolver;
private final Collection excludedBeans;
public TraceDataSourceDecoratorBeanPostProcessor(Collection excludedBeans) {
this.excludedBeans = excludedBeans;
}
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (bean instanceof DataSource && !ScopedProxyUtils.isScopedTarget(beanName)
&& !this.excludedBeans.contains(beanName)) {
// TODO: This might be a problem - it can lead to eager bean init
Map decorators = this.applicationContext
.getBeansOfType(DataSourceDecorator.class).entrySet().stream()
.sorted(Entry.comparingByValue(AnnotationAwareOrderComparator.INSTANCE))
.collect(Collectors.toMap(Entry::getKey, Entry::getValue, (v1, v2) -> v2, LinkedHashMap::new));
return decorate((DataSource) bean, getDataSourceName(bean, beanName), decorators);
}
else {
return bean;
}
}
private String getDataSourceName(Object bean, String beanName) {
if (HIKARI_AVAILABLE && bean instanceof HikariDataSource) {
HikariDataSource hikariDataSource = (HikariDataSource) bean;
if (hikariDataSource.getPoolName() != null && !hikariDataSource.getPoolName().startsWith("HikariPool-")) {
return hikariDataSource.getPoolName();
}
}
return beanName;
}
private DataSource decorate(DataSource dataSource, String name, Map decorators) {
getDataSourceNameResolver().addDataSource(name, dataSource);
DataSource decoratedDataSource = dataSource;
for (Entry decoratorEntry : decorators.entrySet()) {
String decoratorBeanName = decoratorEntry.getKey();
DataSourceDecorator decorator = decoratorEntry.getValue();
DataSource dataSourceBeforeDecorating = decoratedDataSource;
decoratedDataSource = Objects.requireNonNull(decorator.decorate(name, decoratedDataSource),
"DataSourceDecorator (" + decoratorBeanName + ", " + decorator + ") should not return null");
if (dataSourceBeforeDecorating != decoratedDataSource) {
getDataSourceNameResolver().addDataSource(name, decoratedDataSource);
}
}
if (dataSource != decoratedDataSource) {
if (log.isDebugEnabled()) {
log.debug("The decorated data source [" + decoratedDataSource + "] will replace the original one ["
+ dataSource + "]");
}
decoratedDataSource = new DataSourceWrapper(dataSource, decoratedDataSource);
getDataSourceNameResolver().addDataSource(name, decoratedDataSource);
}
return decoratedDataSource;
}
private DataSourceNameResolver getDataSourceNameResolver() {
if (this.dataSourceNameResolver == null) {
this.dataSourceNameResolver = this.applicationContext.getBean(DataSourceNameResolver.class);
}
return this.dataSourceNameResolver;
}
@Override
public int getOrder() {
return Ordered.LOWEST_PRECEDENCE - 10;
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
}