1 /*
2 * Copyright (c) 2002-2020, 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.plugins.participatorybudget.service.campaign.event;
35
36 import java.util.ArrayList;
37 import java.util.List;
38
39 import org.apache.commons.lang.StringUtils;
40
41 import fr.paris.lutece.portal.service.spring.SpringContextService;
42 import fr.paris.lutece.portal.service.util.AppLogService;
43
44 /**
45 *
46 */
47 public class CampaignEventListernersManager
48 {
49 private static final String BEAN_EVENT_LISTENER_MANAGER = "participatorybudget.campaignEventListernersManager";
50
51 private static List<CampaignEventListener> _listEventListeners = new ArrayList<>( );
52
53 // ***********************************************************************************
54 // * SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON *
55 // * SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON SINGLETON *
56 // ***********************************************************************************
57
58 private static CampaignEventListernersManager _singleton;
59
60 public static CampaignEventListernersManager getInstance( )
61 {
62 if ( _singleton == null )
63 {
64 _singleton = SpringContextService.getBean( BEAN_EVENT_LISTENER_MANAGER );
65 _singleton.setListeners( SpringContextService.getBeansOfType( CampaignEventListener.class ) );
66 }
67 return _singleton;
68 }
69
70 // ***********************************************************************************
71 // * EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EV *
72 // * EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EVENTS EV *
73 // ***********************************************************************************
74
75 /**
76 * Add the a listener
77 *
78 * @param listener
79 * The Listener to add
80 */
81 public void addListener( CampaignEventListener listener )
82 {
83 _listEventListeners.add( listener );
84
85 AppLogService.info( "New Campaign Event Listener registered : " + listener.getClass( ).getName( ) );
86 }
87
88 /**
89 * Sets the listeners list
90 *
91 * @param listEventListeners
92 * The Listeners list
93 */
94 public void setListeners( List<CampaignEventListener> listEventListeners )
95 {
96 _listEventListeners = listEventListeners;
97
98 for ( CampaignEventListener listener : _listEventListeners )
99 {
100 AppLogService.info( "New Campaign Event Listener registered : " + listener.getClass( ).getName( ) );
101 }
102 }
103
104 /**
105 * Notify an event to all listeners
106 *
107 * @param event
108 * A campaign Event
109 * @return Results of listeners, or empty List if no result.
110 */
111 public List<String> notifyListeners( CampaignEvent event )
112 {
113 List<String> results = new ArrayList<>( );
114
115 for ( CampaignEventListener listener : _listEventListeners )
116 {
117 String result = listener.processCampaignEvent( event );
118 if ( StringUtils.isNotBlank( result ) )
119 {
120 results.add( result );
121 }
122 }
123
124 return results;
125 }
126 }