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com.github.javaclub.configcenter.spring.property.SpringValue Maven / Gradle / Ivy
package com.github.javaclub.configcenter.spring.property;
import java.lang.ref.WeakReference;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.MethodParameter;
import com.github.javaclub.toolbox.ToolBox.Objects;
/**
* Spring @org.springframework.beans.factory.annotation.Value method info
*/
public class SpringValue {
private static final Logger logger = LoggerFactory.getLogger(SpringValue.class);
private MethodParameter methodParameter;
private Field field;
private WeakReference beanRef;
private String beanName;
private String key;
private String placeholder;
private Class targetType;
private Type genericType;
private boolean isJson;
public SpringValue(String key, String placeholder, Object bean, String beanName, Field field, boolean isJson) {
this.beanRef = new WeakReference<>(bean);
this.beanName = beanName;
this.field = field;
this.key = key;
this.placeholder = placeholder;
this.targetType = field.getType();
this.isJson = isJson;
if (isJson) {
this.genericType = field.getGenericType();
}
}
public SpringValue(String key, String placeholder, Object bean, String beanName, Method method, boolean isJson) {
this.beanRef = new WeakReference<>(bean);
this.beanName = beanName;
this.methodParameter = new MethodParameter(method, 0);
this.key = key;
this.placeholder = placeholder;
Class[] paramTps = method.getParameterTypes();
this.targetType = paramTps[0];
this.isJson = isJson;
if (isJson) {
this.genericType = method.getGenericParameterTypes()[0];
}
}
public void update(Object newVal) throws IllegalAccessException, InvocationTargetException {
if (isField()) {
Object oldVal = getFieldOriginalValue();
// logger.info("Value={}, key={}, beanName={}, field={}.{}", oldVal, key, beanName,
// beanRef.get().getClass().getName(), field.getName());
if (!Objects.equals(newVal, oldVal)) {
injectField(newVal);
}
} else {
injectMethod(newVal);
}
}
private Object getFieldOriginalValue() throws IllegalArgumentException, IllegalAccessException {
boolean accessible = field.isAccessible();
try {
field.setAccessible(true);
return field.get(beanRef.get());
} finally {
field.setAccessible(accessible);
}
}
private void injectField(Object newVal) throws IllegalAccessException {
Object bean = beanRef.get();
if (bean == null) {
return;
}
boolean accessible = field.isAccessible();
field.setAccessible(true);
field.set(bean, newVal);
field.setAccessible(accessible);
logger.info("AutoUpdate configValue successfully, newValue={}, {}", newVal, this);
}
private void injectMethod(Object newVal) throws InvocationTargetException, IllegalAccessException {
Object bean = beanRef.get();
if (bean == null) {
return;
}
methodParameter.getMethod().invoke(bean, newVal);
logger.info("AutoUpdate configValue successfully, newValue={}, {}", newVal, this);
}
public String getBeanName() {
return beanName;
}
public Class getTargetType() {
return targetType;
}
public String getPlaceholder() {
return this.placeholder;
}
public MethodParameter getMethodParameter() {
return methodParameter;
}
public boolean isField() {
return this.field != null;
}
public Field getField() {
return field;
}
public Type getGenericType() {
return genericType;
}
public boolean isJson() {
return isJson;
}
boolean isTargetBeanValid() {
return beanRef.get() != null;
}
@Override
public String toString() {
Object bean = beanRef.get();
if (bean == null) {
return "";
}
if (isField()) {
return String.format("key=%s, beanName=%s, field=%s.%s", key, beanName, bean.getClass().getName(),
field.getName());
}
return String.format("key=%s, beanName=%s, method=%s.%s", key, beanName, bean.getClass().getName(),
methodParameter.getMethod().getName());
}
}
