com.ctrip.framework.apollo.spring.annotation.ApolloProcessor Maven / Gradle / Ivy
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package com.ctrip.framework.apollo.spring.annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.LinkedList;
import java.util.List;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.core.Ordered;
import org.springframework.core.PriorityOrdered;
import org.springframework.util.ReflectionUtils;
/**
* Create by zhangzheng on 2018/2/6
*/
public abstract class ApolloProcessor implements BeanPostProcessor, PriorityOrdered {
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName)
throws BeansException {
Class clazz = bean.getClass();
for (Field field : findAllField(clazz)) {
processField(bean, beanName, field);
}
for (Method method : findAllMethod(clazz)) {
processMethod(bean, beanName, method);
}
return bean;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
/**
* subclass should implement this method to process field
*/
protected abstract void processField(Object bean, String beanName, Field field);
/**
* subclass should implement this method to process method
*/
protected abstract void processMethod(Object bean, String beanName, Method method);
@Override
public int getOrder() {
//make it as late as possible
return Ordered.LOWEST_PRECEDENCE;
}
private List findAllField(Class clazz) {
final List res = new LinkedList<>();
ReflectionUtils.doWithFields(clazz, new ReflectionUtils.FieldCallback() {
@Override
public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException {
res.add(field);
}
});
return res;
}
private List findAllMethod(Class clazz) {
final List res = new LinkedList<>();
ReflectionUtils.doWithMethods(clazz, new ReflectionUtils.MethodCallback() {
@Override
public void doWith(Method method) throws IllegalArgumentException, IllegalAccessException {
res.add(method);
}
});
return res;
}
}