1 /*
2 * Copyright (c) 2002-2022, City of Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.portal.service.sessionlistener;
35
36 import fr.paris.lutece.portal.service.util.AppLogService;
37
38 import java.util.ArrayList;
39 import java.util.List;
40
41 import javax.servlet.http.HttpSessionListener;
42
43 /**
44 * Listener service : provides registered listener access.
45 *
46 */
47 public final class HttpSessionListenerService
48 {
49 private static final List<HttpSessionListener> LIST_LISTENERS = new ArrayList<>( );
50
51 /**
52 * Private constructor
53 */
54 private HttpSessionListenerService( )
55 {
56 // nothing
57 }
58
59 /**
60 * Registers a listener.
61 *
62 * @param entry
63 * the entry
64 */
65 public static void registerListener( HttpSessionListenerEntry entry )
66 {
67 String strListenerClass = entry.getListenerClass( );
68
69 try
70 {
71 HttpSessionListener listener = (HttpSessionListener) Class.forName( strListenerClass ).newInstance( );
72 LIST_LISTENERS.add( listener );
73 AppLogService.info( "New Listener registered : {}", strListenerClass );
74 }
75 catch( InstantiationException | IllegalAccessException | ClassNotFoundException e )
76 {
77 AppLogService.error( "Error registering the listener {} : {}", strListenerClass, e.getMessage( ), e );
78 }
79 }
80
81 /**
82 * Get all registered listeners
83 *
84 * @return all registered listeners
85 */
86 public static List<HttpSessionListener> getListeners( )
87 {
88 return LIST_LISTENERS;
89 }
90 }