mbeanutils.java

This temp directory is used by the JVM for temporary file storage. The JVM is configured to use thi

/*
 * $Header: /home/cvs/jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/mbeans/MBeanUtils.java,v 1.23 2004/01/26 20:19:11 remm Exp $
 * $Revision: 1.23 $
 * $Date: 2004/01/26 20:19:11 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */

package org.apache.catalina.mbeans;


import java.io.InputStream;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Hashtable;

import javax.management.Attribute;
import javax.management.MBeanException;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.modelmbean.ModelMBean;

import org.apache.catalina.Connector;
import org.apache.catalina.Contained;
import org.apache.catalina.Container;
import org.apache.catalina.Context;
import org.apache.catalina.DefaultContext;
import org.apache.catalina.Engine;
import org.apache.catalina.Group;
import org.apache.catalina.Host;
import org.apache.catalina.Loader;
import org.apache.catalina.Logger;
import org.apache.catalina.Manager;
import org.apache.catalina.Realm;
import org.apache.catalina.Role;
import org.apache.catalina.Server;
import org.apache.catalina.Service;
import org.apache.catalina.User;
import org.apache.catalina.UserDatabase;
import org.apache.catalina.Valve;
import org.apache.catalina.deploy.ContextEnvironment;
import org.apache.catalina.deploy.ContextResource;
import org.apache.catalina.deploy.ContextResourceLink;
import org.apache.catalina.deploy.NamingResources;
import org.apache.catalina.valves.ValveBase;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.modeler.ManagedBean;
import org.apache.commons.modeler.Registry;


/**
 * Public utility methods in support of the server side MBeans implementation.
 *
 * @author Craig R. McClanahan
 * @author Amy Roh
 * @version $Revision: 1.23 $ $Date: 2004/01/26 20:19:11 $
 */

public class MBeanUtils {
    private static Log log = LogFactory.getLog(MBeanUtils.class);

    // ------------------------------------------------------- Static Variables


    /**
     * The set of exceptions to the normal rules used by
     * <code>createManagedBean()</code>.  The first element of each pair
     * is a class name, and the second element is the managed bean name.
     */
    private static String exceptions[][] = {
        { "org.apache.ajp.tomcat4.Ajp13Connector",
          "Ajp13Connector" },
        { "org.apache.coyote.tomcat4.Ajp13Connector",
          "CoyoteConnector" },
        { "org.apache.catalina.core.StandardDefaultContext",
          "DefaultContext" },
        { "org.apache.catalina.users.JDBCGroup",
          "Group" },
        { "org.apache.catalina.users.JDBCRole",
          "Role" },
        { "org.apache.catalina.users.JDBCUser",
          "User" },
        { "org.apache.catalina.users.MemoryGroup",
          "Group" },
        { "org.apache.catalina.users.MemoryRole",
          "Role" },
        { "org.apache.catalina.users.MemoryUser",
          "User" },
    };


    /**
     * The configuration information registry for our managed beans.
     */
    private static Registry registry = createRegistry();


    /**
     * The <code>MBeanServer</code> for this application.
     */
    private static MBeanServer mserver = createServer();


    // --------------------------------------------------------- Static Methods

    /**
     * Translates a string into x-www-form-urlencoded format
     *
     * @param t string to be encoded
     * @return encoded string
     */
    private static final String encodeStr(String t) {
   
        return URLEncoder.encode(t);

    }


    /**
     * Create and return the name of the <code>ManagedBean</code> that
     * corresponds to this Catalina component.
     *
     * @param component The component for which to create a name
     */
    static String createManagedName(Object component) {

        // Deal with exceptions to the standard rule
        String className = component.getClass().getName();
        for (int i = 0; i < exceptions.length; i++) {
            if (className.equals(exceptions[i][0])) {
                return (exceptions[i][1]);
            }
        }

        // Perform the standard transformation
        int period = className.lastIndexOf('.');
        if (period >= 0)
            className = className.substring(period + 1);
        return (className);

    }


    /**
     * Create, register, and return an MBean for this
     * <code>Connector</code> object.
     *
     * @param connector The Connector to be managed
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    static ModelMBean createMBean(Connector connector)
        throws Exception {

        String mname = createManagedName(connector);
        ManagedBean managed = registry.findManagedBean(mname);
        if (managed == null) {
            Exception e = new Exception("ManagedBean is not found with "+mname);
            throw new MBeanException(e);
        }
        String domain = managed.getDomain();
        if (domain == null)
            domain = mserver.getDefaultDomain();
        ModelMBean mbean = managed.createMBean(connector);
        ObjectName oname = createObjectName(domain, connector);
        if( mserver.isRegistered( oname ))  {
            mserver.unregisterMBean(oname);
        }
        mserver.registerMBean(mbean, oname);
        return (mbean);

    }


    /**
     * Create, register, and return an MBean for this
     * <code>Context</code> object.
     *
     * @param context The Context to be managed
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    static ModelMBean createMBean(Context context)
        throws Exception {

        String mname = createManagedName(context);
        ManagedBean managed = registry.findManagedBean(mname);
        if (managed == null) {
            Exception e = new Exception("ManagedBean is not found with "+mname);
            throw new MBeanException(e);
        }
        String domain = managed.getDomain();
        if (domain == null)
            domain = mserver.getDefaultDomain();
        ModelMBean mbean = managed.createMBean(context);
        ObjectName oname = createObjectName(domain, context);
        if( mserver.isRegistered(oname)) {
            log.debug("Already registered " + oname);
            mserver.unregisterMBean(oname);
        }
        mserver.registerMBean(mbean, oname);
        return (mbean);

    }

    
    /**
     * Create, register, and return an MBean for this
     * <code>ContextEnvironment</code> object.
     *
     * @param environment The ContextEnvironment to be managed
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    static ModelMBean createMBean(ContextEnvironment environment)
        throws Exception {

        String mname = createManagedName(environment);
        ManagedBean managed = registry.findManagedBean(mname);
        if (managed == null) {
            Exception e = new Exception("ManagedBean is not found with "+mname);
            throw new MBeanException(e);
        }
        String domain = managed.getDomain();
        if (domain == null)
            domain = mserver.getDefaultDomain();
        ModelMBean mbean = managed.createMBean(environment);
        ObjectName oname = createObjectName(domain, environment);
        if( mserver.isRegistered( oname ))  {
            mserver.unregisterMBean(oname);
        }
        mserver.registerMBean(mbean, oname);
        return (mbean);

    }


    /**
     * Create, register, and return an MBean for this
     * <code>ContextResource</code> object.
     *
     * @param resource The ContextResource to be managed
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    static ModelMBean createMBean(ContextResource resource)
        throws Exception {

        String mname = createManagedName(resource);
        ManagedBean managed = registry.findManagedBean(mname);
        if (managed == null) {
            Exception e = new Exception("ManagedBean is not found with "+mname);
            throw new MBeanException(e);
        }
        String domain = managed.getDomain();
        if (domain == null)
            domain = mserver.getDefaultDomain();
        ModelMBean mbean = managed.createMBean(resource);
        ObjectName oname = createObjectName(domain, resource);
        if( mserver.isRegistered( oname ))  {
            mserver.unregisterMBean(oname);
        }
        mserver.registerMBean(mbean, oname);
        return (mbean);

    }


    /**
     * Create, register, and return an MBean for this
     * <code>ContextResourceLink</code> object.
     *
     * @param resourceLink The ContextResourceLink to be managed
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    static ModelMBean createMBean(ContextResourceLink resourceLink)
        throws Exception {

        String mname = createManagedName(resourceLink);
        ManagedBean managed = registry.findManagedBean(mname);
        if (managed == null) {
            Exception e = new Exception("ManagedBean is not found with "+mname);
            throw new MBeanException(e);
        }
        String domain = managed.getDomain();
        if (domain == null)
            domain = mserver.getDefaultDomain();
        ModelMBean mbean = managed.createMBean(resourceLink);
        ObjectName oname = createObjectName(domain, resourceLink);
        if( mserver.isRegistered( oname ))  {
            mserver.unregisterMBean(oname);
        }
        mserver.registerMBean(mbean, oname);
        return (mbean);