Hi guys, I got this working by calling context.updateLoggers();
Thank you Tarun -----Original Message----- From: Tarun Sharma Sent: Monday, December 05, 2016 4:11 PM To: Log4J Users List Subject: Unable to get the appender working if added dynamically. Hi, I am trying to get a appender working by adding it dynamically. I have a logger config with one RollingFileAppender. Now, after the context has initialized, I want to add another appender to the Logger, so that It now logs to both the appenders. The reason for doing this is to achieve temporary log archives. I have jobs that run daily. If a job fails, I want to pick all the relative logs for that particular job and make them available for future auditing. I have taken help from http://logging.apache.org/log4j/2.x/manual/customconfig.html#AddingToCurrent But I cannot get it to work. Please help. Here is my code. name = PropertiesConfig status=debug packages=org.common.util.trace.plugins appenders=rolling appender.rolling.type=RollingFile appender.rolling.name=RollingFile_TEST appender.rolling.fileName=D:/rolling/test_${date:MMdd}.log appender.rolling.filePattern=D:/rolling/test_%d{MMdd}.log appender.rolling.layout.type=PatternLayout appender.rolling.layout.pattern=%d{ABSOLUTE} %level{length=1} [%C{1}:%L] %m%n appender.rolling.policies.type = Policies appender.rolling.policies.time.type = TimeBasedTriggeringPolicy appender.rolling.policies.time.interval = 1 appender.rolling.policies.time.modulate = true appender.rolling.policies.size.type = SizeBasedTriggeringPolicy appender.rolling.policies.size.size=100MB appender.rolling.strategy.type = DefaultRolloverStrategy appender.rolling.strategy.max = 5 rootLogger.level=info rootLogger.appenderRefs=test rootLogger.appenderRef.test.ref= RollingFile_TEST loggers = util logger.util.name = org.common.util logger.util.level=info logger.util.additivity=false logger.util.appenderRefs=rolling logger.util.appenderRef.rolling.ref=RollingFile_TEST @Plugin(name="ReusableFile", category="Core", elementType = "appender", printObject = true) public class ReusableFileAppender extends AbstractWriterAppender { private static final class AppendingWriterManager extends WriterManager { public AppendingWriterManager(StringLayout layout, String fileName) throws FileNotFoundException { super(new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileName, true))), true), fileName, layout, true); } @Override protected synchronized void write(String str) { super.write(str); } } private File logFile; private final FileAppender fileAppender; private ReusableFileAppender(String name, String fileName, StringLayout layout, WriterManager manager) { super(name, layout, null, true, true, manager); logFile = new File(fileName); fileAppender = FileAppender.createAppender(fileName, null, null, name, null, null, null, null, layout, null, null, null, null); } public void setFile(File file) { this.logFile = file; } @PluginFactory public static ReusableFileAppender createAppender( @PluginAttribute("name") String name, @PluginElement("Layout") PatternLayout layout, @PluginAttribute("fileName") String fileName ) { WriterManager manager = createWriterManager(layout, fileName); return new ReusableFileAppender(name, fileName, layout, manager); } private static WriterManager createWriterManager(@PluginElement("Layout") PatternLayout layout, @PluginAttribute("fileName") String fileName) { WriterManager manager; try { manager = new AppendingWriterManager(layout, fileName); } catch (FileNotFoundException e) { throw new IllegalStateException("Failed to create writer.", e); } return manager; } @Override public AppendingWriterManager getManager() { return (AppendingWriterManager) super.getManager(); } @Override public void start() { super.start(); fileAppender.start(); } @Override public void stop() { super.stop(); fileAppender.stop(); } /** Does nothing. */ @Override public void append(LogEvent event) { fileAppender.append(event); } } Public class AdditionalLogger { Logger logger = LogManager.getLogger("org.common.util"); Public static void main(Sting args[]) { LoggerContext context = LoggerContext.getContext(false); final Configuration config = context.getConfiguration(); ReusableFileAppender.createAppender("reusable", PatternLayout.createDefaultLayout(), "D:/rolling/reusable.log"); appender.start(); config.addAppender(appender); ((org.apache.logging.log4j.core.Logger)logger).get().addAppender(appender, null,null); Logger.info("additional Info"); // prints to the configuration in properties file but not to new appender. appender.stop(); } } Regards, Tarun --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
