metrics/src/main/java/org/apache/calcite/avatica/metrics/Meter.java

/*
 * 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.calcite.avatica.metrics;

/**
 * A metric which measure the rate at which some operation is invoked.
 */
public interface Meter extends Metric {

  /**
   * Records one occurrence.
   */
  void mark();

  /**
   * Records {@code events} occurrences.
   *
   * @param events Number of occurrences to record.
   */
  void mark(long events);

}

// End Meter.java