001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.workflow.messaging;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.messaging.DestinationEventListener;
020    import com.liferay.portal.kernel.messaging.DestinationNames;
021    import com.liferay.portal.kernel.messaging.MessageBusUtil;
022    import com.liferay.portal.kernel.messaging.MessageListener;
023    
024    /**
025     * @author Michael C. Han
026     */
027    public class DefaultWorkflowDestinationEventListener
028            implements DestinationEventListener {
029    
030            @Override
031            public void messageListenerRegistered(
032                    String destinationName, MessageListener messageListener) {
033    
034                    if (_log.isInfoEnabled()) {
035                            _log.info(
036                                    "Unregistering default workflow engine " + _workflowEngineName);
037                    }
038    
039                    if (!isProceed(destinationName, messageListener)) {
040                            return;
041                    }
042    
043                    MessageBusUtil.unregisterMessageListener(
044                            DestinationNames.WORKFLOW_COMPARATOR,
045                            _workflowComparatorFactoryListener);
046    
047                    MessageBusUtil.unregisterMessageListener(
048                            DestinationNames.WORKFLOW_DEFINITION,
049                            _workflowDefinitionManagerListener);
050    
051                    MessageBusUtil.unregisterMessageListener(
052                            DestinationNames.WORKFLOW_ENGINE, _workflowEngineManagerListener);
053    
054                    MessageBusUtil.unregisterMessageListener(
055                            DestinationNames.WORKFLOW_INSTANCE,
056                            _workflowInstanceManagerListener);
057    
058                    MessageBusUtil.unregisterMessageListener(
059                            DestinationNames.WORKFLOW_LOG, _workflowLogManagerListener);
060    
061                    MessageBusUtil.unregisterMessageListener(
062                            DestinationNames.WORKFLOW_TASK, _workflowTaskManagerListener);
063            }
064    
065            @Override
066            public void messageListenerUnregistered(
067                    String destinationName, MessageListener messageListener) {
068    
069                    if (!isProceed(destinationName, messageListener)) {
070                            return;
071                    }
072    
073                    if (_log.isInfoEnabled()) {
074                            _log.info(
075                                    "Registering default workflow engine " + _workflowEngineName);
076                    }
077    
078                    MessageBusUtil.registerMessageListener(
079                            DestinationNames.WORKFLOW_COMPARATOR,
080                            _workflowComparatorFactoryListener);
081    
082                    MessageBusUtil.registerMessageListener(
083                            DestinationNames.WORKFLOW_DEFINITION,
084                            _workflowDefinitionManagerListener);
085    
086                    MessageBusUtil.registerMessageListener(
087                            DestinationNames.WORKFLOW_ENGINE, _workflowEngineManagerListener);
088    
089                    MessageBusUtil.registerMessageListener(
090                            DestinationNames.WORKFLOW_INSTANCE,
091                            _workflowInstanceManagerListener);
092    
093                    MessageBusUtil.registerMessageListener(
094                            DestinationNames.WORKFLOW_LOG, _workflowLogManagerListener);
095    
096                    MessageBusUtil.registerMessageListener(
097                            DestinationNames.WORKFLOW_TASK, _workflowTaskManagerListener);
098            }
099    
100            public void setWorkflowComparatorFactoryListener(
101                    MessageListener workflowComparatorFactoryListener) {
102    
103                    _workflowComparatorFactoryListener = workflowComparatorFactoryListener;
104            }
105    
106            public void setWorkflowDefinitionManagerListener(
107                    MessageListener workflowDefinitionManagerListener) {
108    
109                    _workflowDefinitionManagerListener = workflowDefinitionManagerListener;
110            }
111    
112            public void setWorkflowEngineManagerListener(
113                    MessageListener workflowEngineManagerListener) {
114    
115                    _workflowEngineManagerListener = workflowEngineManagerListener;
116            }
117    
118            public void setWorkflowEngineName(String workflowEngineName) {
119                    _workflowEngineName = workflowEngineName;
120            }
121    
122            public void setWorkflowInstanceManagerListener(
123                    MessageListener workflowInstanceManagerListener) {
124    
125                    _workflowInstanceManagerListener = workflowInstanceManagerListener;
126            }
127    
128            public void setWorkflowLogManagerListener(
129                    MessageListener workflowLogManagerListener) {
130    
131                    _workflowLogManagerListener = workflowLogManagerListener;
132            }
133    
134            public void setWorkflowTaskManagerListener(
135                    MessageListener workflowTaskManagerListener) {
136    
137                    _workflowTaskManagerListener = workflowTaskManagerListener;
138            }
139    
140            protected boolean isProceed(
141                    String destinationName, MessageListener messageListener) {
142    
143                    if (messageListener.equals(_workflowEngineManagerListener)) {
144                            return false;
145                    }
146                    else {
147                            return true;
148                    }
149            }
150    
151            private static final Log _log = LogFactoryUtil.getLog(
152                    DefaultWorkflowDestinationEventListener.class);
153    
154            private MessageListener _workflowComparatorFactoryListener;
155            private MessageListener _workflowDefinitionManagerListener;
156            private MessageListener _workflowEngineManagerListener;
157            private String _workflowEngineName;
158            private MessageListener _workflowInstanceManagerListener;
159            private MessageListener _workflowLogManagerListener;
160            private MessageListener _workflowTaskManagerListener;
161    
162    }