001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver;
019
020import org.apache.hadoop.hbase.TableName;
021import org.apache.yetus.audience.InterfaceAudience;
022
023/**
024 * Query Per Second for each table in a RegionServer.
025 */
026@InterfaceAudience.Private
027public interface MetricsTableQueryMeter {
028
029  String TABLE_READ_QUERY_PER_SECOND = "tableReadQueryPerSecond";
030  String TABLE_WRITE_QUERY_PER_SECOND = "tableWriteQueryPerSecond";
031
032  /**
033   * Update table read QPS
034   * @param tableName The table the metric is for
035   * @param count     Number of occurrences to record
036   */
037  void updateTableReadQueryMeter(TableName tableName, long count);
038
039  /**
040   * Update table read QPS
041   * @param tableName The table the metric is for
042   */
043  void updateTableReadQueryMeter(TableName tableName);
044
045  /**
046   * Update table write QPS
047   * @param tableName The table the metric is for
048   * @param count     Number of occurrences to record
049   */
050  void updateTableWriteQueryMeter(TableName tableName, long count);
051
052  /**
053   * Update table write QPS
054   * @param tableName The table the metric is for
055   */
056  void updateTableWriteQueryMeter(TableName tableName);
057}