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/*
* utils4j - JMXUtility.java, Oct 3, 2011 4:27:38 PM
*
* 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 com.varra.jmx.util;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.management.InstanceNotFoundException;
import javax.management.IntrospectionException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanException;
import javax.management.MBeanInfo;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import com.varra.log.Logger;
import com.varra.jmx.exception.JMXWrapperException;
import com.varra.util.RapidFastMap;
/**
* The Class JMXUtility.
*
* @author Rajakrishna V. Reddy
* @version 1.0
*/
public class JMXUtility
{
/** The logger. */
final private Logger logger;
/** The host. */
private String host;
/** The port. */
private int port;
/** The url. */
private String url;
/** The userName. */
private String username = "";
/** The password. */
private String password = "";
/** The connector. */
public JMXConnector connector;
/** The connection. */
private MBeanServerConnection connection;
/** The server restarted. */
private boolean serverRestarted = true;
/**
* Instantiates a new jMX utility.
*
* @param host
* the host
* @param port
* the port
*/
public JMXUtility(String host, int port)
{
this.host = host;
this.port = port;
this.url = "service:jmx:rmi:///jndi/rmi://" + this.host + ":" + this.port + "/jmxrmi";
logger = Logger.getLogger(this.getClass().getName());
try
{
loadServer();
}
catch (JMXWrapperException e)
{
e.printStackTrace();
}
}
/**
* Gets the uRL.
*
* @return the uRL
*/
public String getURL()
{
return url;
}
/**
* Gets the details.
*
* @param mBeanStrName
* the m bean str name
* @return the details
* @throws JMXWrapperException
* the jMX wrapper exception
*/
public RapidFastMap getDetails(String mBeanStrName) throws JMXWrapperException
{
completePreRequisites(mBeanStrName);
logger.info("Getting the details for " + mBeanStrName);
return showAllAttributes(mBeanStrName);
}
/**
* Completes the pre requisites. Includes
*
checks the applicationName provided is an valid application or not.
*
Checks the server status, whether it got rebooted by anyone in
* between, if so just get the new instance of server.
*
* @param mBeanName
* the application name
* @throws JMXWrapperException
* the jMX wrapper exception
*/
private void completePreRequisites(String mBeanName) throws JMXWrapperException
{
if (mBeanName != null && mBeanName.trim().length() > 0)
{
if (serverRestarted)
{
loadServer();
serverRestarted = false;
}
}
else
throw new JMXWrapperException("MBean Name provided is not found. " + mBeanName);
}
/**
* Show all attributes.
*
* @param mBeanStrName
* the m bean str name
* @return the rapid fast map
* @throws JMXWrapperException
* the jMX wrapper exception
*/
/**
* Show all attributes.
*
* @param mBeanStrName
* the m bean str name
* @return the rapid fast map
* @throws JMXWrapperException
* the jMX wrapper exception
*/
private RapidFastMap showAllAttributes(final String mBeanStrName) throws JMXWrapperException
{
logger.info("Attributes supported by this: " + mBeanStrName);
final RapidFastMap map = new RapidFastMap();
try
{
final ObjectName name = new ObjectName(mBeanStrName);
final MBeanInfo mBeanInfo = getConnection().getMBeanInfo(name);
final MBeanAttributeInfo[] attributes = mBeanInfo.getAttributes();
for (final MBeanAttributeInfo mBeanAttributeInfo : attributes)
{
try
{
final Object attributeValue = getConnection().getAttribute(name, mBeanAttributeInfo.getName());
map.put(mBeanAttributeInfo.getName(), attributeValue.toString());
}
catch (Exception e)
{
logger.error("Got error while trying to get the value of: " + mBeanAttributeInfo.getName()
+ ", cause: " + e.getMessage());
}
}
}
catch (MalformedObjectNameException e)
{
throw new JMXWrapperException("Got " + e.getMessage() + " error while trying to get the details of: "
+ mBeanStrName, e);
}
catch (NullPointerException e)
{
throw new JMXWrapperException("Got " + e.getMessage() + " error while trying to get the details of: "
+ mBeanStrName, e);
}
catch (InstanceNotFoundException e)
{
throw new JMXWrapperException("Got " + e.getMessage() + " error while trying to get the details of: "
+ mBeanStrName, e);
}
catch (IntrospectionException e)
{
throw new JMXWrapperException("Got " + e.getMessage() + " error while trying to get the details of: "
+ mBeanStrName, e);
}
catch (ReflectionException e)
{
throw new JMXWrapperException("Got " + e.getMessage() + " error while trying to get the details of: "
+ mBeanStrName, e);
}
catch (IOException e)
{
throw new JMXWrapperException("Got " + e.getMessage() + " error while trying to get the details of: "
+ mBeanStrName, e);
}
logger.info("Attributes: " + map);
return map;
}
/**
* Loads the server.
*
* @throws JMXWrapperException
* the jMX wrapper exception
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
private void loadServer() throws JMXWrapperException
{
logger.info("Restarted the server.. !!!, Hence getting the new instance.");
try
{
final Map env = new LinkedHashMap();
final String[] credentials = new String[] { username, password };
env.put(JMXConnector.CREDENTIALS, credentials);
connector = JMXConnectorFactory.newJMXConnector(new JMXServiceURL(getURL()), env);
connector.connect();
connection = connector.getMBeanServerConnection();
}
catch (final MalformedURLException e)
{
throw new JMXWrapperException("there is no provider for the protocol in: " + getURL(), e);
}
catch (final IOException e)
{
throw new JMXWrapperException("Connection exception while connecting to " + getURL(), e);
}
}
/**
* Gets the {@link MBeanServerConnection}.
*
* @return the rMI adaptor
*/
public MBeanServerConnection getConnection()
{
return connection;
}
/**
* Invoke.
*
* @param objName
* the obj name
* @param methodName
* the method name
* @param args
* the args
* @param signature
* the signature
* @return the object
* @throws InstanceNotFoundException
* the instance not found exception
* @throws MBeanException
* the m bean exception
* @throws ReflectionException
* the reflection exception
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public Object invoke(ObjectName objName, String methodName, Object[] args, String[] signature)
throws InstanceNotFoundException, MBeanException, ReflectionException, IOException
{
return getConnection().invoke(objName, methodName, args, signature);
}
/**
* Reload.
*
* @param appName
* the app name
* @throws InstanceNotFoundException
* the instance not found exception
* @throws MalformedObjectNameException
* the malformed object name exception
* @throws MBeanException
* the m bean exception
* @throws ReflectionException
* the reflection exception
* @throws NullPointerException
* the null pointer exception
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public void reload(String appName) throws InstanceNotFoundException, MalformedObjectNameException, MBeanException,
ReflectionException, NullPointerException, IOException
{
final String beanName = "jboss.web:j2eeType=WebModule,name=//localhost/" + appName
+ ",J2EEApplication=none,J2EEServer=none";
invoke(new ObjectName(beanName), "reload", null, null);
}
/**
* The main method.
*
* @param args
* the arguments
* @throws JMXWrapperException
* the jMX wrapper exception
* @throws InstanceNotFoundException
* the instance not found exception
* @throws MalformedObjectNameException
* the malformed object name exception
* @throws MBeanException
* the m bean exception
* @throws ReflectionException
* the reflection exception
* @throws NullPointerException
* the null pointer exception
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static void main(String[] args) throws JMXWrapperException, InstanceNotFoundException,
MalformedObjectNameException, MBeanException, ReflectionException, NullPointerException, IOException
{
JMXUtility utility = new JMXUtility("172.25.200.120", 8007);
utility.reload("axis1");
// System.out.println(utility.getDetails("jboss.system:type=Server"));
// System.out.println(utility.getDetails("jboss.lang:type=Memory"));
}
}
