Java tutorial
/* * Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. 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 org.wso2.es.integration.common.utils.subscription; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.wso2.carbon.utils.NetworkUtils; import javax.management.*; import javax.management.remote.JMXConnector; import javax.management.remote.JMXConnectorFactory; import javax.management.remote.JMXServiceURL; import java.io.IOException; import java.util.Calendar; import java.util.Date; import java.util.Hashtable; public class JMXClient implements NotificationListener { private MBeanServerConnection mbsc = null; private static ObjectName nodeAgent; private boolean success = false; private static final String RMIRegistryPort = "10899"; private static final String RMIServerPort = "12011"; private static final String CONNECTION_NAME = "org.wso2.carbon:Type=Registry,ConnectorName=Events"; private String path = ""; private JMXConnector jmxc; private static final Log log = LogFactory.getLog(JMXClient.class); /** * connect to org.wso2.carbon for JMX monitoring * * @param userName user name to connect to org.wso2.carbon * @param password password to connect to org.wso2.carbon * @throws Exception */ public void connect(String userName, String password) throws Exception { try { JMXServiceURL url = new JMXServiceURL( "service:jmx:rmi://" + NetworkUtils.getLocalHostname() + ":" + RMIServerPort + "/jndi/rmi://" + NetworkUtils.getLocalHostname() + ":" + RMIRegistryPort + "/jmxrmi"); Hashtable<String, String[]> hashT = new Hashtable<String, String[]>(); String[] credentials = new String[] { userName, password }; hashT.put("jmx.remote.credentials", credentials); jmxc = JMXConnectorFactory.connect(url, hashT); mbsc = jmxc.getMBeanServerConnection(); nodeAgent = new ObjectName(CONNECTION_NAME); } catch (Exception ex) { log.error("infoAdminServiceStub Initialization fail "); throw new Exception("infoAdminServiceStub Initialization fail " + ex.getMessage()); } } /** * connect to org.wso2.carbon to invoke different operations * * @param userName user name to connect to org.wso2.carbon * @param password password to connect to org.wso2.carbon * @param connectionType * @param operation * @throws Exception */ public void connect(String userName, String password, String connectionType, String operation) throws Exception { try { JMXServiceURL url = new JMXServiceURL( "service:jmx:rmi://" + NetworkUtils.getLocalHostname() + ":" + RMIServerPort + "/jndi/rmi://" + NetworkUtils.getLocalHostname() + ":" + RMIRegistryPort + "/jmxrmi"); Hashtable<String, String[]> hashT = new Hashtable<String, String[]>(); String[] credentials = new String[] { userName, password }; hashT.put("jmx.remote.credentials", credentials); jmxc = JMXConnectorFactory.connect(url, hashT); mbsc = jmxc.getMBeanServerConnection(); nodeAgent = new ObjectName(connectionType); mbsc.invoke(nodeAgent, operation, null, null); } catch (Exception ex) { log.error("infoAdminServiceStub Initialization fail "); throw new Exception("infoAdminServiceStub Initialization fail " + ex.getMessage()); } } /** * register to get JMX notifications * * @param pathName path of the resource or collection which the notification is * about * @throws Exception */ public void registerNotificationListener(String pathName) throws Exception { path = pathName; try { mbsc.addNotificationListener(nodeAgent, this, null, null); log.info("Registered for event notifications"); } catch (Exception e) { log.error("NotificationListener registration fail"); throw new Exception("NotificationListener registration fail" + e.getMessage()); } } public void removeNotificationListener() throws ListenerNotFoundException, InstanceNotFoundException, IOException { mbsc.removeNotificationListener(nodeAgent, this, null, null); } public void handleNotification(Notification ntfyObj, Object handback) { log.info("***************************************************"); log.info("* Notification received at " + new Date().toString()); log.info("* type = " + ntfyObj.getType()); log.info("* message = " + ntfyObj.getMessage()); if (ntfyObj.getMessage().contains(path)) { setSuccess(true); } log.info("* seqNum = " + ntfyObj.getSequenceNumber()); log.info("* source = " + ntfyObj.getSource()); log.info("* seqNum = " + Long.toString(ntfyObj.getSequenceNumber())); log.info("* timeStamp = " + new Date(ntfyObj.getTimeStamp())); log.info("* userData = " + ntfyObj.getUserData()); log.info("***************************************************"); } /** * Listen to all the jmx notifications till the required notification is * captured * * @throws InterruptedException */ public boolean getNotifications() throws InterruptedException { Calendar startTime = Calendar.getInstance(); try { while (!isSuccess()) { if (((Calendar.getInstance().getTimeInMillis() - startTime.getTimeInMillis())) < 60000) { Thread.sleep(1000); } else { break; } } return isSuccess(); } catch (InterruptedException e) { log.error("JMX notification listner interrupted"); throw new InterruptedException("JMX notification listner Ninterrupted" + e.getMessage()); } } /** * @return true if the required notification in captured, otherwise false */ public boolean isSuccess() { return success; } private void setSuccess(boolean success) { this.success = success; } public void disconnect() throws ListenerNotFoundException, InstanceNotFoundException, IOException { // mbsc.removeNotificationListener(nodeAgent, this, null, null); nodeAgent = null; if (jmxc != null) { log.info("Closing jmx client connection ##################################################"); jmxc.close(); } if (mbsc != null) { mbsc = null; } } }