1 /** 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.apache.hadoop.hbase.master.metrics; 19 20 import javax.management.ObjectName; 21 22 import org.apache.hadoop.hbase.metrics.MetricsMBeanBase; 23 import org.apache.hadoop.metrics.util.MBeanUtil; 24 import org.apache.hadoop.metrics.util.MetricsRegistry; 25 26 /** 27 * Exports the {@link MasterMetrics} statistics as an MBean 28 * for JMX. 29 */ 30 public class MasterStatistics extends MetricsMBeanBase { 31 private final ObjectName mbeanName; 32 33 public MasterStatistics(MetricsRegistry registry) { 34 super(registry, "MasterStatistics"); 35 mbeanName = MBeanUtil.registerMBean("Master", "MasterStatistics", this); 36 } 37 38 public void shutdown() { 39 if (mbeanName != null) 40 MBeanUtil.unregisterMBean(mbeanName); 41 } 42 }