/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/
package org.olat.admin.jmx;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Set;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanServer;
import javax.management.ObjectInstance;
import javax.management.ObjectName;
import org.olat.core.CoreSpringFactory;
import org.springframework.jmx.support.MBeanServerFactoryBean;
/**
* Description:<br>
* TODO:
*
* <P>
* Initial Date: 01.10.2007 <br>
* @author Felix Jost, http://www.goodsolutions.ch
*/
public class JMXManager {
private static JMXManager INSTANCE = new JMXManager();
private boolean initDone = true;
public static JMXManager getInstance() {
return INSTANCE;
}
private JMXManager() {
//
}
boolean isActive() {
return initDone;
}
void init() {
initDone = true;
}
public List<String> dumpJmx(String objectName) {
try {
MBeanServer server = (MBeanServer) CoreSpringFactory.getCoreBean(MBeanServerFactoryBean.class);
ObjectName on = new ObjectName(objectName);
MBeanAttributeInfo[] ainfo = server.getMBeanInfo(on).getAttributes();
List<MBeanAttributeInfo> mbal = Arrays.asList(ainfo);
Collections.sort(mbal, new Comparator<MBeanAttributeInfo>(){
public int compare(MBeanAttributeInfo o1, MBeanAttributeInfo o2) {
return o1.getName().compareTo(o2.getName());
}});
List<String> l = new ArrayList<String>();
for (MBeanAttributeInfo info : mbal) {
String name = info.getName();
Object res = server.getAttribute(on, name);
l.add(name+"="+res);
}
return l;
} catch (Exception e) {
List l = new ArrayList();
l.add("error while retrieving jmx values: "+e.getClass().getName()+":"+e.getMessage());
//TODO: this is just version 0.1 of dumping jmx values... need a better interface
return l;
}
}
public String dumpAll() {
try {
StringBuilder sb = new StringBuilder();
MBeanServer server = (MBeanServer) CoreSpringFactory.getCoreBean(MBeanServerFactoryBean.class);
Set<ObjectInstance> mbeansset = server.queryMBeans(null, null);
List<ObjectInstance> mbeans = new ArrayList<ObjectInstance>(mbeansset);
Collections.sort(mbeans, new Comparator<ObjectInstance>(){
public int compare(ObjectInstance o1, ObjectInstance o2) {
return o1.getObjectName().getCanonicalName().compareTo(o2.getObjectName().getCanonicalName());
}});
for (ObjectInstance instance : mbeans) {
ObjectName on = instance.getObjectName();
MBeanAttributeInfo[] ainfo = server.getMBeanInfo(on).getAttributes();
List<MBeanAttributeInfo> mbal = Arrays.asList(ainfo);
Collections.sort(mbal, new Comparator<MBeanAttributeInfo>(){
public int compare(MBeanAttributeInfo o1, MBeanAttributeInfo o2) {
return o1.getName().compareTo(o2.getName());
}});
String oname = on.getCanonicalName();
// dump all attributes with their values (simply toString()'ed)
for (MBeanAttributeInfo info : mbal) {
String name = info.getName();
try {
Object res = server.getAttribute(on, name);
sb.append("<br />"+oname+"-> "+name+"="+res);
} catch (Exception e) {
sb.append("<br />ERROR: for attribute '"+name+"', exception:"+e+", message:"+e.getMessage());
}
}
}
return sb.toString();
} catch (Exception e) {
return "error:"+e.getMessage();
}
}
}