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.module.framework;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.util.StringPool;
020    import com.liferay.portal.kernel.util.StringUtil;
021    
022    import org.osgi.framework.Bundle;
023    import org.osgi.framework.BundleActivator;
024    import org.osgi.framework.BundleContext;
025    import org.osgi.framework.ServiceReference;
026    import org.osgi.service.log.LogEntry;
027    import org.osgi.service.log.LogListener;
028    import org.osgi.service.log.LogReaderService;
029    import org.osgi.service.log.LogService;
030    import org.osgi.util.tracker.ServiceTracker;
031    import org.osgi.util.tracker.ServiceTrackerCustomizer;
032    
033    /**
034     * @author Raymond Aug??
035     */
036    public class LogBridge
037            implements BundleActivator, LogListener,
038                               ServiceTrackerCustomizer<LogReaderService, LogReaderService> {
039    
040            @Override
041            public LogReaderService addingService(
042                    ServiceReference<LogReaderService> serviceReference) {
043    
044                    LogReaderService logReaderService = _bundleContext.getService(
045                            serviceReference);
046    
047                    logReaderService.addLogListener(this);
048    
049                    return logReaderService;
050            }
051    
052            @Override
053            public void logged(LogEntry logEntry) {
054                    int level = logEntry.getLevel();
055    
056                    Bundle bundle = logEntry.getBundle();
057    
058                    String symbolicName = StringUtil.replace(
059                            bundle.getSymbolicName(), StringPool.PERIOD, StringPool.UNDERLINE);
060    
061                    Log log = LogFactoryUtil.getLog("osgi.logging." + symbolicName);
062    
063                    String message = logEntry.getMessage();
064    
065                    ServiceReference<?> serviceReference = logEntry.getServiceReference();
066    
067                    if (serviceReference != null) {
068                            message += " " + serviceReference.toString();
069                    }
070    
071                    if ((level == LogService.LOG_DEBUG) && log.isDebugEnabled()) {
072                            log.debug(message, logEntry.getException());
073                    }
074                    else if ((level == LogService.LOG_ERROR) && log.isErrorEnabled()) {
075                            log.error(message, logEntry.getException());
076                    }
077                    else if ((level == LogService.LOG_INFO) && log.isInfoEnabled()) {
078                            log.info(message, logEntry.getException());
079                    }
080                    else if ((level == LogService.LOG_WARNING) && log.isWarnEnabled()) {
081                            log.warn(message, logEntry.getException());
082                    }
083            }
084    
085            @Override
086            public void modifiedService(
087                    ServiceReference<LogReaderService> serviceReference,
088                    LogReaderService logReaderService) {
089            }
090    
091            @Override
092            public void removedService(
093                    ServiceReference<LogReaderService> serviceReference,
094                    LogReaderService logReaderService) {
095    
096                    logReaderService.removeLogListener(this);
097            }
098    
099            @Override
100            public void start(BundleContext bundleContext) throws Exception {
101                    _bundleContext = bundleContext;
102    
103                    _serviceTracker =
104                            new ServiceTracker<LogReaderService, LogReaderService>(
105                                    bundleContext, LogReaderService.class, this);
106    
107                    _serviceTracker.open();
108            }
109    
110            @Override
111            public void stop(BundleContext bundleContext) throws Exception {
112                    _serviceTracker.close();
113    
114                    _serviceTracker = null;
115    
116                    _bundleContext = null;
117            }
118    
119            private BundleContext _bundleContext;
120            private ServiceTracker<LogReaderService, LogReaderService> _serviceTracker;
121    
122    }