001    /**
002     *
003     * Copyright 2005 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    package org.apache.geronimo.system.jmx;
018    
019    import java.util.ArrayList;
020    import javax.management.MBeanServer;
021    import javax.management.MBeanServerFactory;
022    
023    import org.apache.geronimo.gbean.GBeanInfo;
024    import org.apache.geronimo.gbean.GBeanInfoBuilder;
025    
026    /**
027     * Creates a real mbean server of finds an existing one with the specified mbeanServerId
028     * @version $Rev: 410741 $ $Date: 2006-05-31 21:35:48 -0700 (Wed, 31 May 2006) $
029     */
030    public class RealMBeanServerReference implements MBeanServerReference {
031        private MBeanServer mbeanServer;
032    
033        public RealMBeanServerReference(String mbeanServerId) throws MBeanServerNotFound {
034            ArrayList servers = MBeanServerFactory.findMBeanServer(mbeanServerId);
035            if (servers.size() == 0) {
036                mbeanServer = MBeanServerFactory.createMBeanServer("geronimo");
037            } else if (servers.size() > 1) {
038                throw new MBeanServerNotFound(servers.size() + " MBeanServers were found with the agent id " + mbeanServerId);
039            } else {
040                mbeanServer = (MBeanServer) servers.get(0);
041            }
042        }
043    
044        public MBeanServer getMBeanServer() {
045            return mbeanServer;
046        }
047    
048        public static final GBeanInfo GBEAN_INFO;
049    
050        static {
051            GBeanInfoBuilder infoFactory = GBeanInfoBuilder.createStatic(RealMBeanServerReference.class);
052            infoFactory.addAttribute("mbeanServerId", String.class, true);
053            infoFactory.setConstructor(new String[]{"mbeanServerId"});
054            GBEAN_INFO = infoFactory.getBeanInfo();
055        }
056    
057        public static GBeanInfo getGBeanInfo() {
058            return GBEAN_INFO;
059        }
060    }