Hi Bob,
It looks like you forgot to invoke start() on the rolling policy instance. HTH, On 15/09/2010 3:32 AM, Bob DeRemer wrote:
Hi Logback community, I hope the problem is operator error, but I can’t seem to figure this out. My java webapp requirements are such that we need to programmatically create our logback logging components (i.e. no use of an XML configuration file at all). This means I am resetting the LoggerContext and programmatically creating a single PatternLayout along with a ConsoleAppender and 2 specific RollingFileAppenders – 1 for general application logging and 1 dedicated to security-related stuff. If I create these as FileAppenders, they work fine, but as soon as I try and create RollingFileAppenders, the files get created, but nothing is logged out. I’ve provided the code I’m using below. If you look at the createRollingFileAppender method, you will see that I’m creating the TimeBasedRollingPolicy as well. I believe it has something to do with how I’m building up the RollingFileAppender and the Policy. Any suggestions would be greatly appreciated! Thanks, *Bob DeRemer* *Senior Director, Architecture and Development* http://www.burningskysoftware.com <http://www.burningskysoftware.com/> O: 717.505.7923 M: 717.881.3986 ===================================================================================================================== public void initializeLoggerContext() throws IOException { // clear logging context LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory(); loggerContext.reset(); // create standard layout pattern to be used by all appenders PatternLayout layout = new PatternLayout(); layout.setContext(loggerContext); layout.setPattern(LAYOUT_PATTERN); layout.start(); // create console appender ConsoleAppender<ILoggingEvent> consoleAppender = new ConsoleAppender<ILoggingEvent>(); consoleAppender.setContext(loggerContext); consoleAppender.setLayout(layout); consoleAppender.start(); // create application appender FileAppender<ILoggingEvent> applicationAppender = this.createFileAppender(loggerContext, layout, APPLICATION_LOG); applicationAppender.start(); // create security appender RollingFileAppender<ILoggingEvent> securityAppender = this.createRollingFileAppender(loggerContext, layout, SECURITY_LOG); securityAppender.start(); // create configuration appender RollingFileAppender<ILoggingEvent> configurationAppender = this.createRollingFileAppender(loggerContext, layout, CONFIGURATION_LOG); configurationAppender.start(); // configure top-level ROOT logger Logger rootLogger = (Logger)LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME); rootLogger.addAppender(consoleAppender); rootLogger.addAppender(applicationAppender); // configure special security logger Logger securityLogger = (Logger)LoggerFactory.getLogger(SECURITY_LOG); securityLogger.setAdditive(false); securityLogger.setLevel(Level.DEBUG); securityLogger.addAppender(securityAppender); // configure special configuration logger Logger configurationLogger = (Logger)LoggerFactory.getLogger(CONFIGURATION_LOG); configurationLogger.setAdditive(false); configurationLogger.setLevel(Level.DEBUG); configurationLogger.addAppender(configurationAppender); } private FileAppender<ILoggingEvent> createFileAppender(LoggerContext loggerContext, PatternLayout layout, String logName) throws IOException { FileAppender<ILoggingEvent> appender = new FileAppender<ILoggingEvent>(); // get logs directory from Application Context ApplicationContext appContext = ApplicationContext.getInstance(); String logsRoot = appContext.getLogsDirectory(); String logFile = this.getLogFilePath(logsRoot, logName); // create appender appender.setContext(loggerContext); appender.setName(logName); appender.setFile(logFile); appender.setAppend(true); appender.setLayout(layout); return appender; } private RollingFileAppender<ILoggingEvent> createRollingFileAppender(LoggerContext loggerContext, PatternLayout layout, String logName) throws IOException { // get logs directory from Application Context ApplicationContext appContext = ApplicationContext.getInstance(); String logsRoot = appContext.getLogsDirectory(); String logFile = this.getLogFilePath(logsRoot, logName); // create appender RollingFileAppender<ILoggingEvent> appender = new RollingFileAppender<ILoggingEvent>(); appender.setContext(loggerContext); appender.setName(logName); appender.setFile(logFile); appender.setAppend(true); appender.setLayout(layout); // create rollover policy TimeBasedRollingPolicy<ILoggingEvent> policy = new TimeBasedRollingPolicy<ILoggingEvent>(); policy.setContext(loggerContext); policy.setFileNamePattern(this.getArchiveFileNamePattern(logsRoot, logName)); // MUST set parent - linking appender to policy, or you get a NULL ptr exception when starting appender policy.setParent(appender); // associate policy with appender appender.setRollingPolicy(policy); return appender; }
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