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.liveusers.messaging;
016    
017    import com.liferay.portal.kernel.cluster.ClusterExecutorUtil;
018    import com.liferay.portal.kernel.cluster.ClusterNodeResponse;
019    import com.liferay.portal.kernel.cluster.ClusterNodeResponses;
020    import com.liferay.portal.kernel.cluster.ClusterRequest;
021    import com.liferay.portal.kernel.cluster.FutureClusterResponses;
022    import com.liferay.portal.kernel.concurrent.BaseFutureListener;
023    import com.liferay.portal.kernel.json.JSONFactoryUtil;
024    import com.liferay.portal.kernel.json.JSONObject;
025    import com.liferay.portal.kernel.log.Log;
026    import com.liferay.portal.kernel.log.LogFactoryUtil;
027    import com.liferay.portal.kernel.messaging.BaseMessageListener;
028    import com.liferay.portal.kernel.messaging.Message;
029    import com.liferay.portal.kernel.util.MethodHandler;
030    import com.liferay.portal.kernel.util.MethodKey;
031    import com.liferay.portal.liveusers.LiveUsers;
032    
033    import java.util.Map;
034    import java.util.Set;
035    import java.util.concurrent.Future;
036    
037    /**
038     * @author Brian Wing Shun Chan
039     * @author Amos Fong
040     */
041    public class LiveUsersMessageListener extends BaseMessageListener {
042    
043            protected void doCommandAddClusterNode(JSONObject jsonObject)
044                    throws Exception {
045    
046                    String clusterNodeId = jsonObject.getString("clusterNodeId");
047    
048                    ClusterRequest clusterRequest = ClusterRequest.createUnicastRequest(
049                            _getLocalClusterUsersMethodHandler, clusterNodeId);
050    
051                    FutureClusterResponses futureClusterResponses =
052                            ClusterExecutorUtil.execute(clusterRequest);
053    
054                    futureClusterResponses.addFutureListener(
055                            new LiveUsersClusterResponseFutureListener(clusterNodeId));
056            }
057    
058            protected void doCommandRemoveClusterNode(JSONObject jsonObject)
059                    throws Exception {
060    
061                    String clusterNodeId = jsonObject.getString("clusterNodeId");
062    
063                    LiveUsers.removeClusterNode(clusterNodeId);
064            }
065    
066            protected void doCommandSignIn(JSONObject jsonObject) throws Exception {
067                    String clusterNodeId = jsonObject.getString("clusterNodeId");
068                    long companyId = jsonObject.getLong("companyId");
069                    long userId = jsonObject.getLong("userId");
070                    String sessionId = jsonObject.getString("sessionId");
071                    String remoteAddr = jsonObject.getString("remoteAddr");
072                    String remoteHost = jsonObject.getString("remoteHost");
073                    String userAgent = jsonObject.getString("userAgent");
074    
075                    LiveUsers.signIn(
076                            clusterNodeId, companyId, userId, sessionId, remoteAddr, remoteHost,
077                            userAgent);
078            }
079    
080            protected void doCommandSignOut(JSONObject jsonObject) throws Exception {
081                    String clusterNodeId = jsonObject.getString("clusterNodeId");
082                    long companyId = jsonObject.getLong("companyId");
083                    long userId = jsonObject.getLong("userId");
084                    String sessionId = jsonObject.getString("sessionId");
085    
086                    LiveUsers.signOut(clusterNodeId, companyId, userId, sessionId);
087            }
088    
089            @Override
090            protected void doReceive(Message message) throws Exception {
091                    String payload = (String)message.getPayload();
092    
093                    JSONObject jsonObject = JSONFactoryUtil.createJSONObject(payload);
094    
095                    String command = jsonObject.getString("command");
096    
097                    if (command.equals("addClusterNode")) {
098                            doCommandAddClusterNode(jsonObject);
099                    }
100                    else if (command.equals("removeClusterNode")) {
101                            doCommandRemoveClusterNode(jsonObject);
102                    }
103                    else if (command.equals("signIn")) {
104                            doCommandSignIn(jsonObject);
105                    }
106                    else if (command.equals("signOut")) {
107                            doCommandSignOut(jsonObject);
108                    }
109            }
110    
111            private static final Log _log = LogFactoryUtil.getLog(
112                    LiveUsersMessageListener.class);
113    
114            private static final MethodHandler _getLocalClusterUsersMethodHandler =
115                    new MethodHandler(
116                            new MethodKey(LiveUsers.class, "getLocalClusterUsers"));
117    
118            private class LiveUsersClusterResponseFutureListener
119                    extends BaseFutureListener<ClusterNodeResponses> {
120    
121                    public LiveUsersClusterResponseFutureListener(String clusterNodeId) {
122                            _clusterNodeId = clusterNodeId;
123                    }
124    
125                    @Override
126                    public void completeWithException(
127                            Future<ClusterNodeResponses> future, Throwable throwable) {
128    
129                            _log.error(
130                                    "Uanble to add cluster node " + _clusterNodeId, throwable);
131                    }
132    
133                    @Override
134                    public void completeWithResult(
135                            Future<ClusterNodeResponses> future,
136                            ClusterNodeResponses clusterNodeResponses) {
137    
138                            ClusterNodeResponse clusterNodeResponse =
139                                    clusterNodeResponses.getClusterResponse(_clusterNodeId);
140    
141                            try {
142                                    Object result = clusterNodeResponse.getResult();
143    
144                                    if (result == null) {
145                                            return;
146                                    }
147    
148                                    Map<Long, Map<Long, Set<String>>> clusterUsers =
149                                            (Map<Long, Map<Long, Set<String>>>)result;
150    
151                                    LiveUsers.addClusterNode(_clusterNodeId, clusterUsers);
152                            }
153                            catch (Exception e) {
154                                    _log.error("Unable to add cluster node " + _clusterNodeId, e);
155                            }
156                    }
157    
158                    private final String _clusterNodeId;
159    
160            }
161    
162    }