org.openspaces.focalserver.FocalServer.java Source code

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Here is the source code for org.openspaces.focalserver.FocalServer.java

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/*******************************************************************************
 * Copyright (c) 2006-2012 GigaSpaces Technologies Ltd. All rights reserved
 *
 * Licensed 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.openspaces.focalserver;

import java.io.IOException;
import java.rmi.RMISecurityManager;
import java.security.Permission;
import java.util.Arrays;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.management.InstanceNotFoundException;
import javax.management.MBeanRegistration;
import javax.management.MBeanServer;
import javax.management.MBeanServerNotification;
import javax.management.MalformedObjectNameException;
import javax.management.Notification;
import javax.management.NotificationListener;
import javax.management.ObjectName;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

/**
 *
 */
public class FocalServer implements NotificationListener, MBeanRegistration, FocalServerMBean {
    public final static Logger LOGGER = Logger.getLogger(FocalServer.class.getName());

    // ------------------------------ FIELDS ------------------------------
    protected MBeanServer mbeanServer;

    // --------------------------- CONSTRUCTORS ---------------------------

    public FocalServer() {
        installSecurityManager();
    }

    /**
     * Install a Grant All security manager
     */
    private static void installSecurityManager() {
        System.setSecurityManager(new RMISecurityManager() {
            public void checkPermission(Permission perm) {

            }

            public void checkPermission(Permission perm, Object context) {

            }
        });
    }

    // ------------------------ INTERFACE METHODS ------------------------

    // --------------------- Interface FocalServerMBean ---------------------

    public void shutdown() {
        Logger logger = Logger.getLogger(FocalServer.class.getName());
        logger.log(Level.INFO, "FocalServer Shutdown.");
        System.exit(0);
    }

    // --------------------- Interface MBeanRegistration ---------------------

    public ObjectName preRegister(MBeanServer mBeanServer, ObjectName objectName) throws Exception {
        mbeanServer = mBeanServer;
        return objectName;
    }

    public void postRegister(Boolean success) {
        if (success.booleanValue()) {
            listenForRegistration();
        }
    }

    public void preDeregister() throws Exception {
    }

    public void postDeregister() {
    }

    // --------------------- Interface NotificationListener ---------------------

    /**
     * Logs registration events from the local mbeanserver
     */
    public void handleNotification(Notification notification, Object object) {
        if (notification instanceof MBeanServerNotification) {
            Logger logger = Logger.getLogger(FocalServer.class.getName());
            MBeanServerNotification mBeanServerNotification = (MBeanServerNotification) notification;

            if (mBeanServerNotification.getType().equals(MBeanServerNotification.REGISTRATION_NOTIFICATION)) {
                ObjectName beanName = mBeanServerNotification.getMBeanName();
                logger.log(Level.FINE, "Registered:" + beanName);
            } else {
                logger.log(Level.FINE, "Unregistered:" + mBeanServerNotification.getMBeanName());
            }
        }
    }

    // -------------------------- OTHER METHODS --------------------------

    private void listenForRegistration() {
        Logger logger = Logger.getLogger(FocalServer.class.getName());
        try {
            ObjectName delegateName = ObjectName.getInstance("JMImplementation:type=MBeanServerDelegate");
            mbeanServer.addNotificationListener(delegateName, this, null, null);
        } catch (InstanceNotFoundException e1) {
            logger.log(Level.WARNING, e1.toString(), e1);
        } catch (MalformedObjectNameException e1) {
            logger.log(Level.WARNING, e1.toString(), e1);
        }
    }

    // --------------------------- main() method ---------------------------

    public static void main(String[] args) throws IOException {
        if (args.length < 1) {
            printUsage();
            System.exit(1);
        }
        LOGGER.info("\n==================================================\n"
                + "GigaSpaces Focal Server starting using " + Arrays.asList(args) + " \n" + "Log created by <"
                + System.getProperty("user.name") + "> on " + new Date().toString() + "\n"
                + "==================================================");
        ApplicationContext applicationContext;
        try {
            applicationContext = new FileSystemXmlApplicationContext(args);
        } catch (Exception e) {
            LOGGER.fine("Failed starting GigaSpaces Focal Server using " + Arrays.asList(args)
                    + ", will try to load from classpath. " + e.getMessage());
            applicationContext = new ClassPathXmlApplicationContext(args);
        }

    }

    private static void printUsage() {
        System.out.println(
                "Usage:" + FocalServer.class.getName() + " [Spring XML files in a file or classpath syntax]");
    }
}