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1   /**
2    * Copyright 2010 The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  package org.apache.hadoop.hbase.replication.regionserver;
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  import javax.management.ObjectName;
27  
28  /**
29   * Exports metrics recorded by {@link ReplicationSourceMetrics} as an MBean
30   * for JMX monitoring.
31   */
32  public class ReplicationStatistics extends MetricsMBeanBase {
33  
34    private final ObjectName mbeanName;
35  
36    /**
37     * Constructor to register the MBean
38     * @param registry which rehistry to use
39     * @param name name to get to this bean
40     */
41    public ReplicationStatistics(MetricsRegistry registry, String name) {
42      super(registry, name);
43      mbeanName = MBeanUtil.registerMBean("Replication", name, this);
44    }
45    
46    public void unRegisterMBean() {
47      if (mbeanName != null) {
48        MBeanUtil.unregisterMBean(mbeanName);
49      }
50    }
51  }