001// Copyright 2005 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.hivemind.management.impl;
016
017import java.util.List;
018
019import javax.management.MBeanServer;
020
021import org.apache.hivemind.ServiceImplementationFactory;
022import org.apache.hivemind.ServiceImplementationFactoryParameters;
023
024/**
025 * An implementation of {@link org.apache.hivemind.ServiceImplementationFactory} that creates a
026 * MBeanServer using {@link javax.management.MBeanServerFactory}. Searches for an existing
027 * MBeanServer first, and creates a new one if none has been found
028 * 
029 * @author Achim Huegen
030 * @since 1.1
031 */
032public class MBeanServerFactory implements ServiceImplementationFactory
033{
034
035    public Object createCoreServiceImplementation(
036            ServiceImplementationFactoryParameters factoryParameters)
037    {
038        String serverId = null;
039        MBeanServer server = null;
040        List servers = javax.management.MBeanServerFactory.findMBeanServer(serverId);
041        if (servers != null && servers.size() > 0)
042            server = (MBeanServer) servers.get(0);
043        else
044            server = javax.management.MBeanServerFactory.createMBeanServer();
045
046        return server;
047    }
048
049}