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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;
20  
21  import org.apache.hadoop.hbase.classification.InterfaceAudience;
22  import org.apache.hadoop.hbase.metrics.BaseSourceImpl;
23  import org.apache.hadoop.metrics2.lib.MutableHistogram;
24  
25  @InterfaceAudience.Private
26  public class MetricsSnapshotSourceImpl extends BaseSourceImpl implements MetricsSnapshotSource {
27  
28    private MutableHistogram snapshotTimeHisto;
29    private MutableHistogram snapshotCloneTimeHisto;
30    private MutableHistogram snapshotRestoreTimeHisto;
31  
32    public MetricsSnapshotSourceImpl() {
33      this(METRICS_NAME, METRICS_DESCRIPTION, METRICS_CONTEXT, METRICS_JMX_CONTEXT);
34    }
35  
36    public MetricsSnapshotSourceImpl(String metricsName,
37                                     String metricsDescription,
38                                     String metricsContext, String metricsJmxContext) {
39      super(metricsName, metricsDescription, metricsContext, metricsJmxContext);
40    }
41  
42    @Override
43    public void init() {
44      snapshotTimeHisto = metricsRegistry.newTimeHistogram(
45          SNAPSHOT_TIME_NAME, SNAPSHOT_TIME_DESC);
46      snapshotCloneTimeHisto = metricsRegistry.newTimeHistogram(
47          SNAPSHOT_CLONE_TIME_NAME, SNAPSHOT_CLONE_TIME_DESC);
48      snapshotRestoreTimeHisto = metricsRegistry.newTimeHistogram(
49          SNAPSHOT_RESTORE_TIME_NAME, SNAPSHOT_RESTORE_TIME_DESC);
50    }
51  
52    @Override
53    public void updateSnapshotTime(long time) {
54      snapshotTimeHisto.add(time);
55    }
56  
57    @Override
58    public void updateSnapshotCloneTime(long time) {
59      snapshotCloneTimeHisto.add(time);
60    }
61  
62    @Override
63    public void updateSnapshotRestoreTime(long time) {
64      snapshotRestoreTimeHisto.add(time);
65    }
66  }