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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  
19  package org.apache.hadoop.hbase.master.balancer;
20  
21  import org.apache.hadoop.hbase.metrics.BaseSource;
22  
23  public interface MetricsBalancerSource extends BaseSource  {
24  
25    /**
26     * The name of the metrics
27     */
28    String METRICS_NAME = "Balancer";
29  
30    /**
31     * The context metrics will be under.
32     */
33    String METRICS_CONTEXT = "master";
34  
35    /**
36     * The name of the metrics context that metrics will be under in jmx
37     */
38    String METRICS_JMX_CONTEXT = "Master,sub=" + METRICS_NAME;
39  
40    String BALANCE_CLUSTER = "balancerCluster";
41    String MISC_INVOATION_COUNT = "miscInvocationCount";
42  
43    /**
44     * Description
45     */
46    String METRICS_DESCRIPTION = "Metrics about HBase master balancer";
47  
48    void updateBalanceCluster(long time);
49  
50    void incrMiscInvocations();
51  }