org.apache.logging.log4j.core.LoggerContext#updateLoggers ( )源码实例Demo

public static void main(String[] args) throws Exception{

        LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
        Configuration config = ctx.getConfiguration();
        LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
        loggerConfig.setLevel(Level.DEBUG);
        ctx.updateLoggers();

        MultiLabelClfDataSet dataSet = TRECFormat.loadMultiLabelClfDataSet(new File(DATASETS, "scene/train"),
                DataSetType.ML_CLF_DENSE, true);
        MultiLabelClfDataSet testSet = TRECFormat.loadMultiLabelClfDataSet(new File(DATASETS, "scene/test"),
                DataSetType.ML_CLF_DENSE, true);
        AugmentedLR augmentedLR = new AugmentedLR(dataSet.getNumFeatures(), 1);
        double[][] gammas = new double[dataSet.getNumDataPoints()][1];
        for (int i=0;i<dataSet.getNumDataPoints();i++){
            gammas[i][0]=1;
        }
        AugmentedLRLoss loss = new AugmentedLRLoss(dataSet, 0, gammas, augmentedLR, 1, 1);
        LBFGS lbfgs = new LBFGS(loss);

        for (int i=0;i<100;i++){
            lbfgs.iterate();
            System.out.println(loss.getValue());
        }

    }
 

private Config() {
  this.c = ConfigFactory.load();
  final String logLevel = c.getString("log-level");
  Level level = Level.toLevel(logLevel);
  final String lowerLevel = logLevel.toLowerCase();

  if (lowerLevel.equals("debug") || lowerLevel.equals("telemetry")) {
    this.debug = true;
  }
  // force change
  Object ctx = LogManager.getContext(false);
  if (ctx instanceof LoggerContext) {
    LoggerContext context = (LoggerContext) ctx;
    Configuration configuration = context.getConfiguration();
    LoggerConfig loggerConfig = configuration.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    loggerConfig.setLevel(level);
    context.updateLoggers();
  }
}
 

/**
 * Frees the given logger from the appender used to be displayed directly by this controller.
 *
 * @param name the name
 * @return the response entity
 */
@RequestMapping(value = "free/{name}/", produces = MediaType.APPLICATION_JSON_VALUE, method = RequestMethod.GET,
    headers = "Accept=application/json")
@ResponseBody
public ResponseEntity<LogResponse> free(@PathVariable("name")
final String name) {
    final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    synchronized (ctx) {
        final Configuration config = ctx.getConfiguration();
        LoggerConfig loggerConfig = config.getLoggerConfig(name);
        if (name.equalsIgnoreCase(loggerConfig.getName())) {
            config.removeLogger(name);
            LoggerConfig newloggerConfig = new LoggerConfig(name, loggerConfig.getLevel(), true);
            config.addLogger(name, newloggerConfig);
        }
        ctx.updateLoggers();
    }
    return new ResponseEntity<>(listLoggers(ctx), HttpStatus.OK);
}
 

/**
 * Sets the levels of <code>parentLogger</code> and all 'child' loggers to the given <code>level</code>.
 * @param parentLogger the parent logger
 * @param level the new level
 */
public static void setAllLevels(final String parentLogger, final Level level) {
    // 1) get logger config
    // 2) if exact match, use it, if not, create it.
    // 3) set level on logger config
    // 4) update child logger configs with level
    // 5) update loggers
    final LoggerContext loggerContext = LoggerContext.getContext(false);
    final Configuration config = loggerContext.getConfiguration();
    boolean set = setLevel(parentLogger, level, config);
    for (final Map.Entry<String, LoggerConfig> entry : config.getLoggers().entrySet()) {
        if (entry.getKey().startsWith(parentLogger)) {
            set |= setLevel(entry.getValue(), level);
        }
    }
    if (set) {
        loggerContext.updateLoggers();
    }
}
 

@Override
public void registerListener(ListenerConfig cfg) {
  if (history != null)
    throw new IllegalStateException("History already registered");

  history = new CircularList<LogEvent>(cfg.size);

  Level threshold = (cfg.threshold != null) ? Level.toLevel(cfg.threshold) : Level.WARN;
  ThresholdFilter filter = ThresholdFilter.createFilter(threshold, Filter.Result.ACCEPT, Filter.Result.DENY);

  // If there's already an appender like this, remove it
  LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
  LoggerConfig config = getLoggerConfig(ctx, LoggerInfo.ROOT_NAME);

  appender = new Log4j2Appender(this, filter, threshold); // "Log4j2WatcherAppender"

  config.removeAppender(appender.getName());

  if (!appender.isStarted())
    appender.start();

  config.addAppender(appender, threshold, filter);
  ctx.updateLoggers();
}
 

@Test
void noDuplicateLoggingCountWhenMultipleNonAdditiveLoggersShareConfig() {
    LoggerContext loggerContext = new LoggerContext("test");

    LoggerConfig loggerConfig = new LoggerConfig("com.test", Level.INFO, false);
    Configuration configuration = loggerContext.getConfiguration();
    configuration.addLogger("com.test", loggerConfig);
    loggerContext.setConfiguration(configuration);
    loggerContext.updateLoggers();

    Logger logger1 = loggerContext.getLogger("com.test.log1");
    loggerContext.getLogger("com.test.log2");

    new Log4j2Metrics(emptyList(), loggerContext).bindTo(registry);

    assertThat(registry.get("log4j2.events").tags("level", "info").counter().count()).isEqualTo(0);
    logger1.info("Hello, world!");
    assertThat(registry.get("log4j2.events").tags("level", "info").counter().count()).isEqualTo(1);
}
 

void deregister() {
	if (LogManager.getContext(false) instanceof LoggerContext) {
		final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
		if (ctx.getConfiguration() instanceof AbstractConfiguration) {
			final AbstractConfiguration config = (AbstractConfiguration) ctx.getConfiguration();
			final Appender appender = getSingleton();
			appender.stop();
			config.removeAppender(appender.getName());
			final Logger rootLogger = LogManager.getRootLogger();
			final LoggerConfig loggerConfig = config.getLoggerConfig(rootLogger.getName());
			loggerConfig.removeAppender(appender.getName());
			ctx.updateLoggers();
		}
	}
}
 

public static void setLogLevel(Level level) {
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration config = ctx.getConfiguration();
    LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    loggerConfig.setLevel(level);
    ctx.updateLoggers();  // This causes all Loggers to refetch information from their LoggerConfig.
}
 

public static Logger initializeDefaultLogger(Level level, Class<?> clazz) {
  final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
  final Configuration config = ctx.getConfiguration();
  final ConsoleAppender appender = ConsoleAppender.newBuilder().setName("Console").build();
  config.addAppender(appender);
  final AppenderRef ref = AppenderRef.createAppenderRef("Console", level, null);
  final AppenderRef[] refs = new AppenderRef[] {ref};
  final LoggerConfig loggerConfig =
      LoggerConfig.createLogger(true, level, clazz.getName(), null, refs, null, config, null);
  config.addLogger(clazz.getName(), loggerConfig);
  ctx.updateLoggers();
  return LogManager.getLogger(clazz);
}
 

private static void setLogLevel(Logger logger, Level level) {
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration config = ctx.getConfiguration();
    LoggerConfig loggerConfig = config.getLoggerConfig(logger.getName());
    loggerConfig.setLevel(level);
    ctx.updateLoggers();
}
 

/**
 * Sets logger levels.
 *
 * @param levelMap
 *            a levelMap where keys are level names and values are new
 *            Levels.
 */
public static void setLevel(final Map<String, Level> levelMap) {
    final LoggerContext loggerContext = LoggerContext.getContext(false);
    final Configuration config = loggerContext.getConfiguration();
    boolean set = false;
    for (final Map.Entry<String, Level> entry : levelMap.entrySet()) {
        final String loggerName = entry.getKey();
        final Level level = entry.getValue();
        set |= setLevel(loggerName, level, config);
    }
    if (set) {
        loggerContext.updateLoggers();
    }
}
 

/**
 * Unset.
 *
 * @param name
 *        the name
 * @return the response entity
 */
@RequestMapping(value = "unset/{name}/", produces = MediaType.APPLICATION_JSON_VALUE, method = RequestMethod.GET,
    headers = "Accept=application/json")
@ResponseBody
public ResponseEntity<LogResponse> unset(@PathVariable("name")
final String name) {
    final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    synchronized (ctx) {
        final Configuration config = ctx.getConfiguration();
        config.removeLogger(name);
        ctx.updateLoggers();
    }
    return new ResponseEntity<>(listLoggers(ctx), HttpStatus.OK);
}
 

public static void main(String[] args) throws Exception{
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration config = ctx.getConfiguration();
    LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    loggerConfig.setLevel(Level.DEBUG);
    ctx.updateLoggers();
    test1();
}
 

public static void main(String[] args) throws Exception{
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration config = ctx.getConfiguration();
    LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    loggerConfig.setLevel(Level.DEBUG);
    ctx.updateLoggers();
    test1();
}
 

@Override
protected void after() {
    if (loggerClass == null) {
        return;
    }

    final LoggerContext ctx = getLoggerContext();
    LoggerConfig loggerConfig = ctx.getConfiguration().getLoggerConfig(loggerClass.getName());
    loggerConfig.setLevel(oldLevel);
    loggerConfig.removeAppender(APPENDER_NAME);
    ctx.updateLoggers();
}
 

public static void main(String[] args) {
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration config = ctx.getConfiguration();
    LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    loggerConfig.setLevel(Level.DEBUG);
    ctx.updateLoggers();
    test5();

}
 

private static void turnLoggingLevelToDebug() {
	LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
	Configuration config = ctx.getConfiguration();
	LoggerConfig loggerConfig = config.getLoggerConfig("rollingFileAppender");
	loggerConfig.setLevel(Level.DEBUG);
	ctx.updateLoggers();
	CONSOLE_LOGGER.info("logging level changed to [DEBUG]");
	CONSOLE_LOGGER.info("Further details can be found in log file");
}
 

private static void setLogLevel(Level logLevel) {
  LoggerContext loggerContext = (LoggerContext) LogManager.getContext(false);
  Configuration configuration = loggerContext.getConfiguration();
  configuration.getLoggerConfig(LOGGER_NAME).setLevel(logLevel);
  loggerContext.updateLoggers();
}
 

public static void main(String[] args) throws Exception {
  System.out.println("Starting up...");
  System.out.flush();
  Options opts = new Options();
  opts.addOption(Option.builder("i").
      longOpt("input").hasArg().required().desc("Input file or directory to score").build());
  opts.addOption(Option.builder("o").
      longOpt("output").hasArg().required().desc("Output file to which to write score JSON").build());
  opts.addOption(Option.builder("h").longOpt("help").desc("Print this help message and exit").build());
  opts.addOption(Option.builder("v").longOpt("verbose").desc("Print verbose log output").build());

  HelpFormatter helpFormatter = new HelpFormatter();
  CommandLineParser cmdLineParser = new DefaultParser();
  CommandLine cmdLine = null;
  try {
    cmdLine = cmdLineParser.parse(opts, args);
  } catch (ParseException e) {
    System.out.println("Caught exception when parsing command line: " + e.getMessage());
    helpFormatter.printHelp("DocumentIndexer", opts);
    System.exit(1);
  }

  if (cmdLine.hasOption("help")) {
    helpFormatter.printHelp("DocumentIndexer", opts);
    System.exit(0);
  }

  if (cmdLine.hasOption("verbose")) {
    // With help from http://stackoverflow.com/questions/23434252/programmatically-change-log-level-in-log4j2
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration ctxConfig = ctx.getConfiguration();
    LoggerConfig logConfig = ctxConfig.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    logConfig.setLevel(Level.DEBUG);

    ctx.updateLoggers();
    LOGGER.debug("Verbose logging enabled");
  }

  String inputFileOrDir = cmdLine.getOptionValue("input");
  File splitFileOrDir = new File(inputFileOrDir);
  if (!(splitFileOrDir.exists())) {
    LOGGER.error("Unable to find directory at " + inputFileOrDir);
    System.exit(1);
  }

  try (FileWriter writer = new FileWriter(cmdLine.getOptionValue("output"))) {
    PatentScorer scorer = new PatentScorer(PatentModel.getModel(), writer);
    PatentCorpusReader corpusReader = new PatentCorpusReader(scorer, splitFileOrDir);
    corpusReader.readPatentCorpus();
  }
}
 

public static void main(String[] args) throws Exception {
  System.out.println("Starting up...");
  System.out.flush();
  Options opts = new Options();
  opts.addOption(Option.builder("i").
      longOpt("input").hasArg().required().desc("Input file or directory to index").build());
  opts.addOption(Option.builder("x").
      longOpt("index").hasArg().required().desc("Path to index file to generate").build());
  opts.addOption(Option.builder("h").longOpt("help").desc("Print this help message and exit").build());
  opts.addOption(Option.builder("v").longOpt("verbose").desc("Print verbose log output").build());

  HelpFormatter helpFormatter = new HelpFormatter();
  CommandLineParser cmdLineParser = new DefaultParser();
  CommandLine cmdLine = null;
  try {
    cmdLine = cmdLineParser.parse(opts, args);
  } catch (ParseException e) {
    System.out.println("Caught exception when parsing command line: " + e.getMessage());
    helpFormatter.printHelp("DocumentIndexer", opts);
    System.exit(1);
  }

  if (cmdLine.hasOption("help")) {
    helpFormatter.printHelp("DocumentIndexer", opts);
    System.exit(0);
  }

  if (cmdLine.hasOption("verbose")) {
    // With help from http://stackoverflow.com/questions/23434252/programmatically-change-log-level-in-log4j2
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration ctxConfig = ctx.getConfiguration();
    LoggerConfig logConfig = ctxConfig.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
    logConfig.setLevel(Level.DEBUG);

    ctx.updateLoggers();
    LOGGER.debug("Verbose logging enabled");
  }

  LOGGER.info("Opening index at " + cmdLine.getOptionValue("index"));
  Directory indexDir = FSDirectory.open(new File(cmdLine.getOptionValue("index")).toPath());

  /* The standard analyzer is too aggressive with chemical entities (it strips structural annotations, for one
   * thing), and the whitespace analyzer doesn't do any case normalization or stop word elimination.  This custom
   * analyzer appears to treat chemical entities better than the standard analyzer without admitting too much
   * cruft to the index. */
  Analyzer analyzer = CustomAnalyzer.builder().
      withTokenizer("whitespace").
      addTokenFilter("lowercase").
      addTokenFilter("stop").
      build();

  IndexWriterConfig writerConfig = new IndexWriterConfig(analyzer);
  writerConfig.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);
  writerConfig.setRAMBufferSizeMB(1 << 10);
  IndexWriter indexWriter = new IndexWriter(indexDir, writerConfig);

  String inputFileOrDir = cmdLine.getOptionValue("input");
  File splitFileOrDir = new File(inputFileOrDir);
  if (!(splitFileOrDir.exists())) {
    LOGGER.error("Unable to find directory at " + inputFileOrDir);
    System.exit(1);
  }

  DocumentIndexer indexer = new DocumentIndexer(indexWriter);
  PatentCorpusReader corpusReader = new PatentCorpusReader(indexer, splitFileOrDir);
  corpusReader.readPatentCorpus();
  indexer.commitAndClose();
}