/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.amoro.metrics;

/** A listener interface to respond to events related to metric registration. */
public interface MetricRegisterListener {

  /**
   * This method will be called when some metric is registered.
   *
   * @param metricKey metric register key
   * @param metric metric object
   */
  void onMetricRegistered(MetricKey metricKey, Metric metric);

  /**
   * This method will be called when some metric is unregistered.
   *
   * @param metricKey metric register key
   */
  void onMetricUnregistered(MetricKey metricKey);
}
