org.forstdb.StatisticsCollectorCallback Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of forstjni Show documentation

ForSt fat jar with modifications specific for Apache Flink that contains .so files for linux32 and linux64 (glibc and musl-libc), jnilib files for Mac OSX, and a .dll for Windows x64.

There is a newer version: 0.1.2-beta

Show newest version

// Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).

package org.forstdb;

/**
 * Callback interface provided to StatisticsCollector.
 * 
 * Thread safety:
 * StatisticsCollector doesn't make any guarantees about thread safety.
 * If the same reference of StatisticsCollectorCallback is passed to multiple
 * StatisticsCollector references, then its the responsibility of the
 * user to make StatisticsCollectorCallback's implementation thread-safe.
 *
 */
public interface StatisticsCollectorCallback {
  /**
   * Callback function to get ticker values.
   * @param tickerType Ticker type.
   * @param tickerCount Value of ticker type.
  */
  void tickerCallback(TickerType tickerType, long tickerCount);

  /**
   * Callback function to get histogram values.
   * @param histType Histogram type.
   * @param histData Histogram data.
  */
  void histogramCallback(HistogramType histType, HistogramData histData);
}