Tomcat example source code file (StandardHostMBean.java)

This example Tomcat source code file (StandardHostMBean.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Tomcat tags/keywords

basemodelmbean, exception, exception, managedbean, management, mbeanserver, registry, runtimeoperationsexception, standardhost, standardhost, standardhostmbean, standardhostmbean, string, string, valve

The Tomcat StandardHostMBean.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.catalina.mbeans;


import javax.management.MBeanException;
import javax.management.MBeanServer;
import javax.management.RuntimeOperationsException;

import org.apache.catalina.Valve;
import org.apache.catalina.core.StandardHost;
import org.apache.tomcat.util.modeler.BaseModelMBean;
import org.apache.tomcat.util.modeler.ManagedBean;
import org.apache.tomcat.util.modeler.Registry;


/**
 * <p>A ModelMBean implementation for the
 * <code>org.apache.catalina.core.StandardHost component.

 *
 * @author Amy Roh
 * @version $Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $
 */

public class StandardHostMBean extends BaseModelMBean {

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

    // ----------------------------------------------------------- Constructors


    /**
     * Construct a <code>ModelMBean with default
     * <code>ModelMBeanInfo information.
     *
     * @exception MBeanException if the initializer of an object
     *  throws an exception
     * @exception RuntimeOperationsException if an IllegalArgumentException
     *  occurs
     */
    public StandardHostMBean()
        throws MBeanException, RuntimeOperationsException {

        super();

    }


    // ------------------------------------------------------------- Attributes



    // ------------------------------------------------------------- Operations


   /**
     * Add an alias name that should be mapped to this Host
     *
     * @param alias The alias to be added
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    public void addAlias(String alias)
        throws Exception {

        StandardHost host = (StandardHost) this.resource;
        host.addAlias(alias);

    }


   /**
     * Return the set of alias names for this Host
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    public String [] findAliases()
        throws Exception {

        StandardHost host = (StandardHost) this.resource;
        return host.findAliases();

    }


   /**
     * Return the MBean Names of the Valves assoicated with this Host
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    public String [] getValves()
        throws Exception {

        Registry registry = MBeanUtils.createRegistry();
        StandardHost host = (StandardHost) this.resource;
        String mname = MBeanUtils.createManagedName(host);
        ManagedBean managed = registry.findManagedBean(mname);
        String domain = null;
        if (managed != null) {
            domain = managed.getDomain();
        }
        if (domain == null)
            domain = mserver.getDefaultDomain();
        Valve [] valves = host.getValves();
        String [] mbeanNames = new String[valves.length];
        for (int i = 0; i < valves.length; i++) {
            mbeanNames[i] =
                MBeanUtils.createObjectName(domain, valves[i]).toString();
        }

        return mbeanNames;

    }


   /**
     * Return the specified alias name from the aliases for this Host
     *
     * @param alias Alias name to be removed
     *
     * @exception Exception if an MBean cannot be created or registered
     */
    public void removeAlias(String alias)
        throws Exception {

        StandardHost host = (StandardHost) this.resource;
        host.removeAlias(alias);

    }


}