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1   /*
2    * Copyright (c) 1998-2002 The Jgroup Team.
3    *
4    * This program is free software; you can redistribute it and/or modify
5    * it under the terms of the GNU Lesser General Public License version 2 as
6    * published by the Free Software Foundation.
7    *
8    * This program is distributed in the hope that it will be useful,
9    * but WITHOUT ANY WARRANTY; without even the implied warranty of
10   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11   * GNU Lesser General Public License for more details.
12   *
13   * You should have received a copy of the GNU Lesser General Public License
14   * along with this program; if not, write to the Free Software
15   * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
16   *
17   */
18  
19  package jgroup.core.arm;
20  
21  /**
22   *  The <code>ShutdownListener</code> must be implemented by servers that
23   *  wish have control over its own shutdown procedure.  Servers that do not
24   *  implement this interface will still be removed when elected, but forcibly,
25   *  even though they do not implement neither <code>ShutdownListener</code>
26   *  or the <code>RecoveryListener</code>.
27   *
28   *  @author Hein Meling
29   *  @since Jgroup 2.1
30   */
31  public interface ShutdownListener
32    extends RecoveryListener
33  {
34  
35    /**
36     * Method provided by the server to allow it to perform a clean shutdown
37     * procedure, when elected by the <code>RecoveryLayer</code> to be removed.
38     */
39    public void shutdown();
40  
41  } // END of ShutdownListener