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Common utilities shared in Alluxio core modules

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/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.metrics.sink;

/**
 * Sink consumes the records generated by the metrics source.
 */
public interface Sink {
  /**
   * Starts the reporter polling.
   */
  void start();

  /**
   * Stops the reporter.
   */
  void stop();

  /**
   * Reports the current values of all metrics.
   */
  void report();
}