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Java > Open Source Codes > org > objectweb > jonas > management > AbsReconfigurator


1 /*
2  * JOnAS: Java(TM) Open Application Server
3  * Copyright (C) 1999 Bull S.A.
4  * Contact: jonas-team@objectweb.org
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19  * USA
20  *
21  * Initial developer(s): Adriana Danes
22  *
23  * --------------------------------------------------------------------------
24  * $Id: AbsReconfigurator.java,v 1.2 2005/04/28 08:43:25 benoitf Exp $
25  * --------------------------------------------------------------------------
26  */
27
28 package org.objectweb.jonas.management;
29
30 // general Java imports
31 import org.objectweb.jonas.common.Log;
32 import org.objectweb.util.monolog.api.Logger;
33 import org.objectweb.util.monolog.api.BasicLevel;
34 /**
35  * This class allows for persistent reconfiguration of a JOnAS service or of a JOnAS resource
36  * This is an abstract class. It must be extended to handle properties or xml file
37  * @author Adriana Danes
38  * @author Florent Benoit : Add an abstract class to define ReconfiguratorXml in addition to ReconfiguratorProp
39  */
40 public abstract class AbsReconfigurator implements Reconfigurator {
41
42     /**
43      * Name of the JOnAS service or JOnAS resource to which this object is associated
44      */
45     protected String JavaDoc name;
46
47     /**
48      * Name of the file updated by the saveConfig method
49      */
50     protected String JavaDoc configFileName;
51
52     /**
53      * The sequence number of the last treated management notification
54      */
55     protected long lastSequence;
56
57     /**
58      * Logger used
59      */
60     protected static Logger logger = null;
61
62
63     /**
64      * Construct a reconfigurator for a JOnAS service or a JOnAS resource
65      * @param name Name of the JOnAS service or JOnAS resource to which this object is associated
66      * @param configFileName name of the config file
67      */
68     public AbsReconfigurator(String JavaDoc name, String JavaDoc configFileName) {
69         // Get a logger for server traces
70 logger = Log.getLogger(Log.JONAS_MANAGEMENT_PREFIX);
71         this.name = name;
72         this.configFileName = configFileName;
73         this.lastSequence = 0;
74         if (logger.isLoggable(BasicLevel.DEBUG)) {
75             logger.log(BasicLevel.DEBUG, "Creating Reconfigurator for " + name + " - configuration file is " + configFileName);
76         }
77     }
78
79     /**
80      * Saves the updated configuration
81      * @param sequence the sequence number of management notification producing the save (in fact store) operation
82      */
83     public abstract void saveConfig(long sequence) throws ReconfigException;
84
85 }
86
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