Source Code Cross Referenced for TomcatMonologFileLogger.java in  » J2EE » Enhydra-Application-Framework » org » apache » catalina » logger » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Enhydra Application Framework » org.apache.catalina.logger 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:            TomcatMonologFileLogger.java
003:            An Extension of a Logger that channels the logging trough Monolog instead 
004:            of Tomcat's default FileLogger.
005:         */
006:
007:        //package org.enhydra.logging;
008:        package org.apache.catalina.logger;
009:
010:        import java.io.File;
011:        import java.io.FileInputStream;
012:        import java.io.FileWriter;
013:        import java.io.IOException;
014:        import java.io.PrintWriter;
015:        import java.sql.Timestamp;
016:        import java.util.Enumeration;
017:        import java.util.Iterator;
018:        import java.util.Locale;
019:        import java.util.Properties;
020:        import java.util.ResourceBundle;
021:        import java.util.Set;
022:
023:        import javax.management.MBeanServerConnection;
024:        import javax.management.ObjectName;
025:        import javax.management.remote.JMXConnector;
026:        import javax.management.remote.JMXConnectorFactory;
027:        import javax.management.remote.JMXServiceURL;
028:
029:        import org.apache.catalina.LifecycleException;
030:        import org.apache.catalina.util.StringManager;
031:        import org.objectweb.util.monolog.Monolog;
032:        import org.objectweb.util.monolog.api.BasicLevel;
033:        import org.objectweb.util.monolog.api.Level;
034:        import org.objectweb.util.monolog.api.LoggerFactory;
035:        import org.objectweb.util.monolog.wrapper.common.Configurable;
036:
037:        import com.lutris.util.Config;
038:        import com.lutris.util.ConfigException;
039:
040:        /**
041:         * Implementation of <b>Logger</b> that appends log messages to a file
042:         * named {prefix}.{date}.{suffix} in a configured directory, with an
043:         * optional preceding timestamp.
044:         *
045:         * @author Igor Smirnov
046:         * @version $Revision: v1.0
047:         */
048:
049:        public class TomcatMonologFileLogger extends LoggerBase {
050:            //      private String _options;
051:            //      private transient boolean _started;
052:            private org.objectweb.util.monolog.api.LoggerFactory lf;
053:            private org.objectweb.util.monolog.api.Logger logger = null;
054:            //      private String path, jonas, fileName;
055:            private static ResourceBundle rb = null;
056:            public static String PROPERTY_FILE;
057:            static ObjectName objectName;
058:
059:            //LifecycleSupport lifecycle = new LifecycleSupport(LoggerBase.class);
060:
061:            public TomcatMonologFileLogger() throws ConfigException {
062:
063:                try {
064:                    configure();
065:                    this .logger = lf.getLogger("TomcatMonologFileLogger");
066:
067:                } catch (ConfigException ex) {
068:                    throw new ConfigException(
069:                            "TomcatMonologFileLogger:Cannot configure logger. Logger not initialized.");
070:                }
071:
072:            }
073:
074:            private String date = "";
075:
076:            /**
077:             * The directory in which log files are created.
078:             */
079:            private String directory = "logs";
080:
081:            /**
082:             * The descriptive information about this implementation.
083:             */
084:            protected static final String info = "org.apache.catalina.logger.FileLogger/1.0";
085:
086:            /**
087:             * The prefix that is added to log file filenames.
088:             */
089:            private String prefix = "catalina.";
090:
091:            /**
092:             * The string manager for this package.
093:             */
094:            /*private StringManager sm =
095:                StringManager.getManager(Constants.Package);*/
096:
097:            /**
098:             * Has this component been started?
099:             */
100:            //    private boolean started = false;
101:
102:            /**
103:             * The suffix that is added to log file filenames.
104:             */
105:            private String suffix = ".log";
106:
107:            /**
108:             * Should logged messages be date/time stamped?
109:             */
110:            //    private boolean timestamp = false;
111:
112:            /**
113:             * The PrintWriter to which we are currently logging, if any.
114:             */
115:            private PrintWriter writer = null;
116:
117:            // --------------------------------------------------------- Public Methods
118:
119:            /**
120:             * Writes the specified message to a servlet log file, usually an event
121:             * log.  The name and type of the servlet log is specific to the
122:             * servlet container.
123:             *
124:             * @param msg A <code>String</code> specifying the message to be written
125:             *  to the log file
126:             */
127:            public void log(String msg) {
128:
129:                // Construct the timestamp we will use, if requested
130:
131:                //        Timestamp ts = new Timestamp(System.currentTimeMillis());
132:                //        String tsString = ts.toString().substring(0, 19);
133:                //        String tsDate = tsString.substring(0, 10);
134:                //        String logString = "";
135:
136:                // If the date has changed, switch log files
137:                /*if (!date.equals(tsDate)) {
138:                    synchronized (this) {
139:                        if (!date.equals(tsDate)) {
140:                            close();
141:                            date = tsDate;
142:                            open();
143:                        }
144:                    }
145:                }*/
146:
147:                // Log this message, timestamped if necessary
148:                /*
149:                   if (timestamp) {
150:                       logString = tsString + " " + msg;
151:                   } else {
152:                       logString = msg;
153:                   }
154:                 */
155:
156:                Level priority = BasicLevel.LEVEL_INFO;
157:
158:                /*if (Log.DEBUG.equals(tag))
159:                    priority=BasicLevel.LEVEL_DEBUG;
160:                else if (Log.WARN.equals(tag) || Log.ASSERT.equals(tag))
161:                    priority=BasicLevel.LEVEL_ERROR;
162:                else if (Log.FAIL.equals(tag))
163:                    priority=BasicLevel.LEVEL_FATAL; */
164:
165:                //if (!logger.isLoggable(priority))
166:                //   return;
167:                logger.log(priority, "", "" + msg, null);
168:
169:            }
170:
171:            public synchronized void configure(String monologConfFile)
172:                    throws ConfigException {
173:
174:                if (monologConfFile == null || monologConfFile.length() == 0) {
175:                    throw new ConfigException(
176:                            "impossible to configure monolog without configuration file");
177:                }
178:                // Load the configuration in a Properties object
179:                String b = null;
180:                Properties p = new Properties();
181:                FileInputStream fis = null;
182:                try {
183:                    fis = new FileInputStream(monologConfFile);
184:                    p.load(fis);
185:                    // Search the class name of the LoggerFactory which must be instanciated
186:                    b = p.getProperty("log.config.classname", null);
187:
188:                    if (b == null) {
189:                        throw new ConfigException(
190:                                "Malformed configuration log file:"
191:                                        + " log.config.classname not available");
192:                    }
193:
194:                    // Instanciate the LoggerFactory
195:                    lf = (LoggerFactory) Class.forName(b).newInstance();
196:                    // Configure with the properties
197:                    p.put(Configurable.LOG_CONFIGURATION_TYPE,
198:                            Configurable.PROPERTY);
199:                    p.put(Configurable.LOG_CONFIGURATION_FILE, monologConfFile);
200:                    //         p.put(Configurable.LOG_CONFIGURATION_FILE_USE_CLASSPATH, "true");
201:
202:                    ((Configurable) lf).configure(p);
203:
204:                    fis.close();
205:                    //		   PropertiesConfAccess.load(p, lf, (HandlerFactory) lf, (LevelFactory) lf);
206:                } catch (Exception e) {
207:                    try {
208:                        fis.close();
209:                    } catch (IOException e1) {
210:                        e1.printStackTrace();
211:                    }
212:                    throw new ConfigException(
213:                            "Malformed configuration log file:"
214:                                    + " log.config.classname not available");
215:                }
216:            }
217:
218:            public synchronized void configure() throws ConfigException {
219:                String b = null;
220:                String propkey;
221:                String propvalue;
222:                Properties props = new Properties();
223:
224:                // Search the classpath for the logger configuration file
225:
226:                try {
227:                    findObjectName();
228:                    if (objectName != null)
229:                        PROPERTY_FILE = objectName.getKeyProperty("fname");
230:                    rb = ResourceBundle.getBundle(PROPERTY_FILE, new Locale(
231:                            "en", "US"), ClassLoader.getSystemClassLoader());
232:
233:                    Enumeration enumeration = rb.getKeys();
234:
235:                    while (enumeration.hasMoreElements()) {
236:
237:                        propkey = (String) enumeration.nextElement();
238:                        propvalue = rb.getString(propkey);
239:                        props.setProperty(propkey, propvalue);
240:                    }
241:
242:                } catch (Exception e) {
243:                    throw new ConfigException(
244:                            "Logger configuration file could not be found:  logger could not be initialized!");
245:                }
246:
247:                try {
248:
249:                    // Search the class name of the LoggerFactory which must be instanciated
250:                    b = props.getProperty("log.config.classname", null);
251:                    if (b == null) {
252:                        throw new ConfigException(
253:                                "Malformed configuration log file:"
254:                                        + " log.config.classname not available");
255:                    }
256:
257:                    // Instanciate the LoggerFactory
258:
259:                    props.put(Configurable.LOG_CONFIGURATION_TYPE,
260:                            Configurable.PROPERTY);
261:                    lf = Monolog.getMonologFactory(b);
262:
263:                    //	   PropertiesConfAccess.load(p, lf, (HandlerFactory) lf, (LevelFactory) lf);
264:                } catch (Exception e) {
265:                    throw new ConfigException(
266:                            "Malformed configuration log file:"
267:                                    + " log.config.classname not available");
268:                }
269:
270:            }
271:
272:            /**
273:             * Configure Logger with given config section
274:             *
275:             * @param logConfig containing parameters for configuring logger
276:             */
277:            public void configure(Config logConfig) throws ConfigException {
278:                String fileName = null;
279:
280:                if (logConfig.containsKey("Monolog")) {
281:                    fileName = logConfig.getString("Monolog");
282:                    try {
283:                        configure(fileName);
284:                    } catch (Exception ex) {
285:                        try {
286:                            configure();
287:                        } catch (ConfigException cex) {
288:                            throw new ConfigException(
289:                                    "Cannot configure logger. Config file is null.");
290:                        }
291:                    }
292:
293:                } else {
294:                    try {
295:                        configure();
296:                    } catch (ConfigException ex) {
297:                        throw new ConfigException(
298:                                "Cannot configure logger. Logger not initialized.");
299:                    }
300:                }
301:            }
302:
303:            /**
304:             * finds the ObjectName which correspondes to the MBean of the jonas logger
305:             */
306:            private void findObjectName() throws Exception {
307:                JMXConnector connector = null;
308:                try {
309:
310:                    String serviceName = "jonas";
311:
312:                    // The name of the started jonas server (service name)
313:                    serviceName = System.getProperty("jonas.name");
314:                    if (serviceName == null) {
315:                        serviceName = "jonas";
316:                    }
317:
318:                    // The address of the connector server
319:                    JMXServiceURL url = new JMXServiceURL(
320:                            "service:jmx:rmi://localhost/jndi/jrmpconnector_"
321:                                    + serviceName);
322:
323:                    // Connect a JSR 160 JMXConnector to the server side
324:                    connector = JMXConnectorFactory.connect(url);
325:
326:                    // Retrieve an MBeanServerConnection that represent the MBeanServer the remote
327:                    // connector server is bound to
328:                    MBeanServerConnection connection = connector
329:                            .getMBeanServerConnection();
330:
331:                    objectName = new ObjectName(serviceName
332:                            + ":type=service,name=log,*");
333:
334:                    Set mBeans = connection.queryNames(objectName, null);
335:                    int l = mBeans.size();
336:                    if ((l) > 1) {
337:                        throw new Exception("MBean set size not equal 1: " + l);
338:                    } else if (l == 0) {
339:                        objectName = null;
340:                        if (connector != null) {
341:                            try {
342:                                connector.close();
343:                            } catch (Exception exept) {
344:                            }
345:                        }
346:                        return;
347:                    }
348:                    Iterator i = mBeans.iterator();
349:                    objectName = (ObjectName) i.next();
350:                } catch (Exception e) {
351:                    throw new Exception(e);
352:                } finally {
353:                    if (connector != null) {
354:                        try {
355:                            connector.close();
356:                        } catch (Exception exept) {
357:                        }
358:                    }
359:                }
360:                return;
361:            }
362:
363:            private void close() {
364:
365:                if (writer == null)
366:                    return;
367:                writer.flush();
368:                writer.close();
369:                writer = null;
370:                date = "";
371:
372:            }
373:
374:            /**
375:             * Open the new log file for the date specified by <code>date</code>.
376:             */
377:            private void open() {
378:
379:                // Create the directory if necessary
380:                File dir = new File(directory);
381:                if (!dir.isAbsolute())
382:                    dir = new File(System.getProperty("catalina.base"),
383:                            directory);
384:                dir.mkdirs();
385:
386:                // Open the current log file
387:                try {
388:                    String pathname = dir.getAbsolutePath() + File.separator
389:                            + prefix + date + suffix;
390:                    writer = new PrintWriter(new FileWriter(pathname, true),
391:                            true);
392:                } catch (IOException e) {
393:                    writer = null;
394:                }
395:
396:            }
397:
398:            public void start() throws LifecycleException {
399:            }
400:
401:            /**                       
402:             * Gracefully terminate the active use of the public methods of this
403:             * component.  This method should be the last one called on a given
404:             * instance of this component.
405:             *                        
406:             * @exception LifecycleException if this component detects a fatal error
407:             *  that needs to be reported
408:             */
409:            public void stop() throws LifecycleException {
410:            }
411:
412:        }
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