Package org.apache.avalon.phoenix.components.manager

Source Code of org.apache.avalon.phoenix.components.manager.MX4JSystemManager

/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software License
* version 1.1, a copy of which has been included with this distribution in
* the LICENSE.txt file.
*/
package org.apache.avalon.phoenix.components.manager;

import java.io.File;
import javax.management.Attribute;
import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.InvalidAttributeValueException;
import javax.management.MBeanException;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import mx4j.adaptor.rmi.jrmp.JRMPAdaptorMBean;
import mx4j.log.Log;
import mx4j.util.StandardMBeanProxy;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.context.Context;
import org.apache.avalon.framework.context.ContextException;
import org.apache.avalon.framework.context.Contextualizable;

/**
* This component is responsible for managing phoenix instance.
*
* @author <a href="mail@leosimons.com">Leo Simons</a>
* @author <a href="mailto:peter at apache.org">Peter Donald</a>
* @author <a href="mailto:Huw@mmlive.com">Huw Roberts</a>
*/
public class MX4JSystemManager
    extends AbstractJMXManager
    implements Contextualizable, Configurable
{
    private static final String DEFAULT_NAMING_FACTORY =
        "com.sun.jndi.rmi.registry.RegistryContextFactory";
    private static final int DEFAULT_HTTPADAPTER_PORT =
        Integer.getInteger( "phoenix.adapter.http", 8082 ).intValue();

    private int m_port;
    private boolean m_rmi;
    private File m_homeDir;
    private String m_stylesheetDir;
    private String m_namingFactory;
    private String m_password;
    private String m_username;

    public void contextualize( Context context )
        throws ContextException
    {
        m_homeDir = (File)context.get( "phoenix.home" );
    }

    public void configure( final Configuration configuration )
        throws ConfigurationException
    {
        m_port = configuration.getChild( "manager-adaptor-port" ).
            getValueAsInteger( DEFAULT_HTTPADAPTER_PORT );

        //This is for backwards compatability with old-style
        //RI JMX implementation
        m_port = configuration.getChild( "port" ).
            getValueAsInteger( m_port );

        getLogger().debug( "MX4J HTTP listener port: " + m_port );

        m_rmi = configuration.getChild( "enable-rmi-adaptor" ).getValueAsBoolean( false );

        m_namingFactory =
            configuration.getChild( "rmi-naming-factory" ).getValue( DEFAULT_NAMING_FACTORY );

        final String stylesheets =
            configuration.getChild( "stylesheets-dir" ).getValue( null );
        if( null != stylesheets )
        {
            m_stylesheetDir = new File( m_homeDir, stylesheets ).getAbsolutePath();
        }

        /*<user>
         �<name>user</name>
         �<password>passwd</password>
        </user>*/
        final Configuration userConfig = configuration.getChild( "user" );
        m_username = userConfig.getChild( "name" ).getValue( null );
        m_password = userConfig.getChild( "password" ).getValue( null );
    }

    public void initialize()
        throws Exception
    {
        super.initialize();

        final MBeanServer mBeanServer = getMBeanServer();

        configureHttpAdaptor( mBeanServer );

        if( m_rmi )
        {
            startRMIAdaptor( mBeanServer );
        }
    }

    private void configureHttpAdaptor( final MBeanServer mBeanServer )
        throws Exception
    {
        final ObjectName adaptorName = new ObjectName( "Http:name=HttpAdaptor" );
        mBeanServer.createMBean( "mx4j.adaptor.http.HttpAdaptor", adaptorName, null );
        mBeanServer.setAttribute( adaptorName, new Attribute( "Port", new Integer( m_port ) ) );

        if( null != m_username )
        {
            configureAuthentication( mBeanServer, adaptorName );
        }

        configureProcessor( mBeanServer, adaptorName );

        // starts the server
        mBeanServer.invoke( adaptorName, "start", null, null );
    }

    private void configureProcessor( final MBeanServer mBeanServer,
                                     final ObjectName adaptorName )
        throws Exception
    {
        final ObjectName processorName = new ObjectName( "Http:name=XSLTProcessor" );
        mBeanServer.createMBean( "mx4j.adaptor.http.XSLTProcessor", processorName, null );
        mBeanServer.setAttribute( adaptorName, new Attribute( "ProcessorName", processorName ) );

        if( null != m_stylesheetDir )
        {
            final Attribute stylesheetDir = new Attribute( "File", m_stylesheetDir );
            mBeanServer.setAttribute( processorName, stylesheetDir );
        }

        final Attribute useCache =
            new Attribute( "UseCache", Boolean.FALSE );
        mBeanServer.setAttribute( processorName, useCache );
    }

    private void configureAuthentication( final MBeanServer mBeanServer, final ObjectName adaptorName ) throws InstanceNotFoundException, MBeanException, ReflectionException, AttributeNotFoundException, InvalidAttributeValueException
    {
        // add user names
        mBeanServer.invoke( adaptorName,
                            "addAuthorization",
                            new Object[]{m_username, m_password},
                            new String[]{"java.lang.String", "java.lang.String"} );

        // use basic authentication
        mBeanServer.setAttribute( adaptorName,
                                  new Attribute( "AuthenticationMethod", "basic" ) );
    }

    private void startRMIAdaptor( final MBeanServer server )
        throws Exception
    {
        System.setProperty( "java.naming.factory.initial", m_namingFactory );

        // Create and start the naming service
        final ObjectName naming = new ObjectName( "Naming:type=rmiregistry" );
        server.createMBean( "mx4j.tools.naming.NamingService", naming, null );
        server.invoke( naming, "start", null, null );

        // Create the JRMP adaptor
        final ObjectName adaptor = new ObjectName( "Adaptor:protocol=JRMP" );
        server.createMBean( "mx4j.adaptor.rmi.jrmp.JRMPAdaptor", adaptor, null );
        JRMPAdaptorMBean mbean =
            (JRMPAdaptorMBean)StandardMBeanProxy.create( JRMPAdaptorMBean.class,
                                                         server,
                                                         adaptor );
        // Set the JNDI name with which will be registered
        mbean.setJNDIName( "jrmp" );
        // Register the JRMP adaptor in JNDI and start it
        mbean.start();
    }

    protected MBeanServer createMBeanServer()
        throws Exception
    {
        MX4JLoggerAdapter.setLogger( getLogger() );
        Log.redirectTo( new MX4JLoggerAdapter() );
        return MBeanServerFactory.createMBeanServer( "Phoenix" );
    }
}
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