org/objectweb/proactive/jmx/server/ProActiveConnectorServer.java

/* 
 * ################################################################
 * 
 * ProActive: The Java(TM) library for Parallel, Distributed, 
 *            Concurrent computing with Security and Mobility
 * 
 * Copyright (C) 1997-2007 INRIA/University of Nice-Sophia Antipolis
 * Contact: proactive@objectweb.org
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or any later version.
 *  
 * This library 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.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *  
 *  Initial developer(s):               The ProActive Team
 *                        http://www.inria.fr/oasis/ProActive/contacts.html
 *  Contributor(s): 
 * 
 * ################################################################
 */ 
package org.objectweb.proactive.jmx.server; 

import java.io.IOException;
import java.net.MalformedURLException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import javax.management.MBeanServer;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXServiceURL;

import org.objectweb.proactive.ActiveObjectCreationException;
import org.objectweb.proactive.ProActive;
import org.objectweb.proactive.core.node.NodeException;
import org.objectweb.proactive.core.rmi.ClassServer;
import org.objectweb.proactive.jmx.ProActiveJMXConstants;

import com.sun.jmx.remote.util.EnvHelp;


public class ProActiveConnectorServer extends JMXConnectorServer {
        
    private JMXServiceURL address;
    private ProActiveServerImpl paServer;
    private Map<String, Object> attributes;
    private static final int CREATED = 0;
    private static final int STARTED = 1;
    private static final int STOPPED = 2;
    private int state = CREATED;

    public ProActiveConnectorServer(JMXServiceURL url,
        Map<String, ?> environment) throws IOException {
        this(url, environment, (MBeanServer) null);
    }

    public ProActiveConnectorServer(JMXServiceURL url,
        Map<String, ?> environment, MBeanServer mbeanServer)
        throws IOException {
        this(url, environment, (ProActiveServerImpl) null, mbeanServer);
    }

    public ProActiveConnectorServer(JMXServiceURL url,
        Map<String, ?> environment, ProActiveServerImpl paServer,
        MBeanServer mbeanServer) throws IOException {
        super(mbeanServer);
        if (url == null) {
            throw new IllegalArgumentException("Null JMXService URL");
        }
        if (paServer == null) {
            final String prt = url.getProtocol();
            if ((prt == null) || !(prt.equals("proactive"))) {
                final String msg = "Invalid protocol type :" + prt;
                throw new MalformedURLException(msg);
            }

            final String urlPath = url.getURLPath();
            if (environment == null) {
                this.attributes = new HashMap<String, Object>();
            } else {
                this.attributes = Collections.unmodifiableMap(environment);
                EnvHelp.checkAttributes(this.attributes);
            }

            this.address = url;
        }
    }

    //exposes the active object
    public synchronized void start() throws IOException {
        if (this.state == STARTED) {
            return;
        } else if (this.state == STOPPED) {
            throw new IOException("The Server has been stopped");
        }
        MBeanServer mbs = getMBeanServer();

        if (mbs == null) {
            throw new IllegalStateException(
                "This connector is not attached with a mbean server");
        }

        try {
            paServer = new ProActiveServerImpl();
            paServer.setMBeanServer(mbs);
            paServer = (ProActiveServerImpl) ProActive.turnActive(paServer);
        } catch (ActiveObjectCreationException e) {
            e.printStackTrace();
        } catch (NodeException e) {
            e.printStackTrace();
        }

        //Server registrations
//        String url = ClassServer.getUrl();
//        String url = "";
//        System.out.println("url = " + url);
        String url = ProActiveJMXConstants.SERVER_REGISTERED_NAME;
        ProActive.register(this.paServer, url);
        state = STARTED;
    }

    public void stop() {
        this.paServer = null;
        this.state = STOPPED;
    }

    public boolean isActive() {
        return this.state == STARTED;
    }

    public JMXServiceURL getAddress() {
        return this.address;
    }

    public Map<String, Object> getAttributes() {
        return this.attributes;
    }
}

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