001    /**
002     * Copyright (c) 2000-2013 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.im;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.util.PropsKeys;
020    import com.liferay.portal.util.PropsUtil;
021    
022    import java.lang.reflect.Method;
023    
024    /**
025     * @author Brian Wing Shun Chan
026     * @author Brett Randall
027     * @author Bruno Farache
028     * @author Shuyang Zhou
029     */
030    public class YMConnector {
031    
032            public static void disconnect() {
033                    if (_instance != null) {
034                            _instance._disconnect();
035                    }
036            }
037    
038            public static void send(String to, String msg)
039                    throws IllegalStateException {
040    
041                    _instance._send(to, msg);
042            }
043    
044            private YMConnector() {
045            }
046    
047            private void _connect() {
048                    try {
049                            Class<?> clazz = Class.forName(_SESSION);
050    
051                            _ym = clazz.newInstance();
052    
053                            _loginMethod = clazz.getMethod("login", String.class, String.class);
054                            _logoutMethod = clazz.getMethod("logout");
055                            _sendMessageMethod = clazz.getMethod(
056                                    "sendMessage", String.class, String.class);
057                    }
058                    catch (Exception e) {
059                            _jYMSGLibraryFound = false;
060    
061                            if (_log.isWarnEnabled()) {
062                                    _log.warn(
063                                            "jYMSG library could not be loaded: " + e.getMessage());
064                            }
065                    }
066    
067                    try {
068                            if (_jYMSGLibraryFound) {
069                                    String login = PropsUtil.get(PropsKeys.YM_LOGIN);
070                                    String password = PropsUtil.get(PropsKeys.YM_PASSWORD);
071    
072                                    _loginMethod.invoke(_ym, login, password);
073                            }
074                    }
075                    catch (Exception e) {
076                            _log.error(e);
077                    }
078            }
079    
080            private void _disconnect() {
081                    try {
082                            if (_ym != null) {
083                                    _logoutMethod.invoke(_ym);
084                            }
085                    }
086                    catch (Exception e) {
087                            if (_log.isWarnEnabled()) {
088                                    _log.warn(e);
089                            }
090                    }
091            }
092    
093            private void _send(String to, String msg) throws IllegalStateException {
094                    try {
095                            if (_ym == null) {
096                                    _connect();
097                            }
098    
099                            if (_jYMSGLibraryFound) {
100                                    _sendMessageMethod.invoke(_ym, to, msg);
101                            }
102                    }
103                    catch (Exception e) {
104                            _log.error(e);
105                    }
106            }
107    
108            private static final String _SESSION = "ymsg.network.Session";
109    
110            private static Log _log = LogFactoryUtil.getLog(YMConnector.class);
111    
112            private static YMConnector _instance = new YMConnector();
113    
114            private boolean _jYMSGLibraryFound = true;
115            private Method _loginMethod;
116            private Method _logoutMethod;
117            private Method _sendMessageMethod;
118            private Object _ym;
119    
120    }