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.master.balancer; 019 020import org.apache.hadoop.hbase.CompatibilitySingletonFactory; 021import org.apache.yetus.audience.InterfaceAudience; 022 023/** 024 * Faced for exposing metrics about the balancer. 025 */ 026@InterfaceAudience.Private 027public class MetricsBalancer { 028 029 private MetricsBalancerSource source = null; 030 031 public MetricsBalancer() { 032 initSource(); 033 } 034 035 /** 036 * A function to instantiate the metrics source. This function can be overridden in its subclasses 037 * to provide extended sources 038 */ 039 protected void initSource() { 040 source = CompatibilitySingletonFactory.getInstance(MetricsBalancerSource.class); 041 } 042 043 public void balanceCluster(long time) { 044 source.updateBalanceCluster(time); 045 } 046 047 public void incrMiscInvocations() { 048 source.incrMiscInvocations(); 049 } 050 051 public void balancerStatus(boolean status) { 052 source.updateBalancerStatus(status); 053 } 054}