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 */ 018 019package org.apache.hadoop.hbase.regionserver; 020 021import org.apache.hadoop.conf.Configuration; 022import org.apache.yetus.audience.InterfaceAudience; 023 024@InterfaceAudience.Private 025public class MetricsUserAggregateFactory { 026 private MetricsUserAggregateFactory() { 027 028 } 029 030 public static final String METRIC_USER_ENABLED_CONF = "hbase.regionserver.user.metrics.enabled"; 031 public static final boolean DEFAULT_METRIC_USER_ENABLED_CONF = false; 032 033 public static MetricsUserAggregate getMetricsUserAggregate(Configuration conf) { 034 if (conf.getBoolean(METRIC_USER_ENABLED_CONF, DEFAULT_METRIC_USER_ENABLED_CONF)) { 035 return new MetricsUserAggregateImpl(conf); 036 } else { 037 //NoOpMetricUserAggregate 038 return new MetricsUserAggregate() { 039 @Override public MetricsUserAggregateSource getSource() { 040 return null; 041 } 042 043 @Override public void updatePut(long t) { 044 045 } 046 047 @Override public void updateDelete(long t) { 048 049 } 050 051 @Override public void updateGet(long t) { 052 053 } 054 055 @Override public void updateIncrement(long t) { 056 057 } 058 059 @Override public void updateAppend(long t) { 060 061 } 062 063 @Override public void updateReplay(long t) { 064 065 } 066 067 @Override public void updateScanTime(long t) { 068 069 } 070 071 @Override public void updateFilteredReadRequests() { 072 073 } 074 075 @Override public void updateReadRequestCount() { 076 077 } 078 }; 079 } 080 } 081 082}