/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.server.webbeans;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.AnnotatedType;
import javax.enterprise.inject.spi.Bean;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.AttributeNotFoundException;
import javax.management.DynamicMBean;
import javax.management.IntrospectionException;
import javax.management.InvalidAttributeValueException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanConstructorInfo;
import javax.management.MBeanException;
import javax.management.MBeanInfo;
import javax.management.MBeanNotificationInfo;
import javax.management.MBeanOperationInfo;
import javax.management.ReflectionException;
import com.caucho.config.ConfigException;
import com.caucho.config.inject.InjectManager;
import com.caucho.inject.Module;
import com.caucho.util.L10N;
/**
* Jndi proxy class for injection.
*/
@Module
public class BeanMBean<T> implements DynamicMBean {
private static final L10N L = new L10N(BeanMBean.class);
private static final Logger log = Logger.getLogger(BeanMBean.class.getName());
private InjectManager _injectManager;
private Bean<T> _bean;
private MBeanInfo _info;
private HashMap<String,Method> _attrMap
= new HashMap<String,Method>();
BeanMBean(InjectManager manager, Bean<T> bean, AnnotatedType<T> type)
{
try {
_injectManager = manager;
_bean = bean;
MBeanAttributeInfo []attrInfo;
attrInfo = parseMethods(_bean, type);
_info = new MBeanInfo(_bean.getBeanClass().getName(),
null,
attrInfo,
new MBeanConstructorInfo[0],
new MBeanOperationInfo[0],
new MBeanNotificationInfo[0]);
} catch (Exception e) {
throw ConfigException.create(e);
}
}
private MBeanAttributeInfo []parseMethods(Bean<T> bean, AnnotatedType<T> type)
throws IntrospectionException
{
ArrayList<MBeanAttributeInfo> list = new ArrayList<MBeanAttributeInfo>();
// for (AnnotatedMethod<? super T> annMethod : type.getMethods()) {
for (Method method : bean.getBeanClass().getMethods()) {
String name = method.getName();
if (method.getParameterTypes().length == 0
&& Modifier.isPublic(method.getModifiers())
&& name.startsWith("get")) {
name = name.substring(3);
MBeanAttributeInfo attr;
attr = new MBeanAttributeInfo(name,
null,
method,
null);
list.add(attr);
_attrMap.put(name, method);
}
}
MBeanAttributeInfo []info = new MBeanAttributeInfo[list.size()];
list.toArray(info);
return info;
}
@Override
public Object getAttribute(String attribute)
throws AttributeNotFoundException,
MBeanException,
ReflectionException
{
Method method = _attrMap.get(attribute);
if (method == null)
throw new AttributeNotFoundException(L.l("'{0}' is an unknown attribute in {1}",
attribute, this));
CreationalContext<T> env = _injectManager.createCreationalContext(_bean);
Object value = _injectManager.getReference(_bean, _bean.getBeanClass(), env);
try {
return method.invoke(value);
} catch (IllegalAccessException e) {
throw new ReflectionException(e);
} catch (InvocationTargetException e) {
throw new ReflectionException((Exception) e.getCause());
}
}
@Override
public AttributeList getAttributes(String[] attributes)
{
AttributeList list = new AttributeList();
for (String attr : attributes) {
try {
list.add(getAttribute(attr));
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
}
}
return list;
}
@Override
public MBeanInfo getMBeanInfo()
{
return _info;
}
@Override
public Object invoke(String actionName, Object[] params, String[] signature)
throws MBeanException,
ReflectionException
{
return null;
}
@Override
public void setAttribute(Attribute attribute)
throws AttributeNotFoundException,
InvalidAttributeValueException,
MBeanException,
ReflectionException
{
}
@Override
public AttributeList setAttributes(AttributeList attributes)
{
return null;
}
}