How to use io.pravega.shared.metrics

  @Override
  public DynamicLogger createDynamicLogger() {
    init();
    return new DynamicLoggerImpl(conf, metrics, new StatsLoggerImpl(getMetrics(), "pravega"));
  }
}

  void bookKeeperWriteCompleted(int length, Duration elapsed) {
    this.writeLatency.reportSuccessEvent(elapsed);
    DYNAMIC_LOGGER.incCounterValue(MetricsNames.BK_WRITE_BYTES, length);
  }
}

  @Override
  public long getCount() {
    return getInstance().getCount();
  }
}

  static void get(long elapsedMillis, long getDataSize) {
    DYNAMIC_LOGGER.incCounterValue(MetricsNames.CACHE_READ_BYTES, getDataSize);
    GET_LATENCY.reportSuccessValue(elapsedMillis);
  }
}

public void report(long totalBytes, int generationSpread) {
  DYNAMIC_LOGGER.reportGaugeValue(MetricsNames.CACHE_TOTAL_SIZE_BYTES, totalBytes);
  this.generationSpread.reportSuccessValue(generationSpread);
}

@Override
public void reportSuccessEvent(Duration duration) {
  getInstance().reportSuccessEvent(duration);
}

@Override
public void reportSuccessValue(long value) {
  getInstance().reportSuccessValue(value);
}

@Override
public OpStatsData toOpStatsData() {
  return getInstance().toOpStatsData();
}

  @Override
  public long get() {
    return getInstance().get();
  }
}

@Override
public void reportFailEvent(Duration duration) {
  getInstance().reportFailEvent(duration);
}

@Override
public <T extends Number> Gauge registerGauge(String name, Supplier<T> value) {
  return getOrSet(this.gauges, name,
      metricName -> this.statsLoggerRef.get().registerGauge(metricName, value),
      (metric, proxyName, c) -> new GaugeProxy(metric, proxyName, value, c));
}

@Override
public StatsLogger createStatsLogger(String name) {
  init();
  return new StatsLoggerImpl(getMetrics(), "pravega." + name);
}

public synchronized static void initialize(MetricsConfig config) {
  STATS_PROVIDER.setProvider(config);
  DYNAMIC_LOGGER.setLogger(STATS_PROVIDER.createDynamicLogger());
}

@Override
public void recordEvents(long n) {
  getInstance().recordEvents(n);
}

@Override
public void recordEvent() {
  getInstance().recordEvent();
}

/**
 * Gets the name of the underlying metric.
 *
 * @return The name.
 */
public String getName() {
  return getInstance().getName();
}

  @Override
  public void clear() {
    getInstance().clear();
  }
}

@Override
public void dec() {
  getInstance().dec();
}

@Override
public void clear() {
  getInstance().clear();
}

public void operationsCompleted(int operationCount, Duration commitElapsed) {
  DYNAMIC_LOGGER.incCounterValue(this.operationLogSize, operationCount);
  this.operationCommitLatency.reportSuccessEvent(commitElapsed);
}