MBeanServerFactory


1   // Copyright 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.hivemind.management.impl;
16  
17  import java.util.List  ;
18  
19  import javax.management.MBeanServer  ;
20  
21  import org.apache.hivemind.ServiceImplementationFactory;
22  import org.apache.hivemind.ServiceImplementationFactoryParameters;
23  
24  /**
25   * An implementation of {@link org.apache.hivemind.ServiceImplementationFactory} that creates a
26   * MBeanServer using {@link javax.management.MBeanServerFactory}. Searches for an existing
27   * MBeanServer first, and creates a new one if none has been found
28   * 
29   * @author Achim Huegen
30   * @since 1.1
31   */
32  public class MBeanServerFactory implements ServiceImplementationFactory
33  {
34  
35      public Object   createCoreServiceImplementation(
36              ServiceImplementationFactoryParameters factoryParameters)
37      {
38          String   serverId = null;
39          MBeanServer   server = null;
40          List   servers = javax.management.MBeanServerFactory.findMBeanServer(serverId);
41          if (servers != null && servers.size() > 0)
42              server = (MBeanServer  ) servers.get(0);
43          else
44              server = javax.management.MBeanServerFactory.createMBeanServer();
45  
46          return server;
47      }
48  
49  }

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