forked from apache/dubbo
/
DubboConfigDefaultPropertyValueBeanPostProcessor.java
115 lines (96 loc) · 4.69 KB
/
DubboConfigDefaultPropertyValueBeanPostProcessor.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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
*
* http://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.apache.dubbo.config.spring.beans.factory.config;
import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.config.AbstractConfig;
import org.apache.dubbo.config.ProtocolConfig;
import com.alibaba.spring.beans.factory.config.GenericBeanPostProcessorAdapter;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.beans.factory.support.MergedBeanDefinitionPostProcessor;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.annotation.CommonAnnotationBeanPostProcessor;
import org.springframework.core.Ordered;
import org.springframework.core.PriorityOrdered;
import javax.annotation.PostConstruct;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.util.Arrays;
import static com.alibaba.spring.util.ObjectUtils.of;
import static org.springframework.aop.support.AopUtils.getTargetClass;
import static org.springframework.beans.BeanUtils.getPropertyDescriptor;
import static org.springframework.util.ReflectionUtils.invokeMethod;
/**
* The {@link BeanPostProcessor} class for the default property value of {@link AbstractConfig Dubbo's Config Beans}
*
* @since 2.7.6
*/
public class DubboConfigDefaultPropertyValueBeanPostProcessor extends GenericBeanPostProcessorAdapter<AbstractConfig>
implements MergedBeanDefinitionPostProcessor, PriorityOrdered {
/**
* The bean name of {@link DubboConfigDefaultPropertyValueBeanPostProcessor}
*/
public static final String BEAN_NAME = "dubboConfigDefaultPropertyValueBeanPostProcessor";
protected void processBeforeInitialization(AbstractConfig dubboConfigBean, String beanName) throws BeansException {
// [Feature] https://github.com/apache/dubbo/issues/5721
setBeanNameAsDefaultValue(dubboConfigBean, "id", beanName);
if (dubboConfigBean instanceof ProtocolConfig) {
ProtocolConfig config = (ProtocolConfig) dubboConfigBean;
if (StringUtils.isEmpty(config.getName())) {
config.setName("dubbo");
}
} else {
setBeanNameAsDefaultValue(dubboConfigBean, "name", beanName);
}
}
@Override
public void postProcessMergedBeanDefinition(RootBeanDefinition beanDefinition, Class<?> beanType, String beanName) {
// DO NOTHING
}
protected void setBeanNameAsDefaultValue(Object bean, String propertyName, String beanName) {
Class<?> beanClass = getTargetClass(bean);
PropertyDescriptor propertyDescriptor = getPropertyDescriptor(beanClass, propertyName);
if (propertyDescriptor != null) { // the property is present
Method getterMethod = propertyDescriptor.getReadMethod();
if (getterMethod == null) { // if The getter method is absent
return;
}
Object propertyValue = invokeMethod(getterMethod, bean);
if (propertyValue != null) { // If The return value of "getName" method is not null
return;
}
Method setterMethod = propertyDescriptor.getWriteMethod();
if (setterMethod != null) { // the getter and setter methods are present
if (Arrays.equals(of(String.class), setterMethod.getParameterTypes())) { // the param type is String
// set bean name to the value of the the property
invokeMethod(setterMethod, bean, beanName);
}
}
}
}
/**
* @return Higher than {@link InitDestroyAnnotationBeanPostProcessor#getOrder()}
* @see InitDestroyAnnotationBeanPostProcessor
* @see CommonAnnotationBeanPostProcessor
* @see PostConstruct
*/
@Override
public int getOrder() {
return Ordered.HIGHEST_PRECEDENCE;
}
}