TracingMetricRegistry.java 文件源码

private static Logger createMetricUpdateTracer() {
  Logger logger = Logger.getLogger(TracingMetricRegistry.class.getName() + ".metricUpdates");
  ConsoleHandler handler = new ConsoleHandler();
  handler.setFormatter(new Formatter() {
    @Override
    public String format(LogRecord record) {
      return ">>" + record.getMessage() + "\n";
    }
  });
  logger.addHandler(handler);
  logger.setUseParentHandlers(false);
  handler.setLevel(Level.ALL);
  //logger.setLevel(Level.ALL);

  return logger;
}