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.metrics2.lib;
20
21 import java.util.concurrent.atomic.AtomicLongArray;
22
23 import org.apache.hadoop.hbase.classification.InterfaceAudience;
24
25 /**
26 * Extended histogram implementation with counters for metric time ranges.
27 */
28 @InterfaceAudience.Private
29 public class MetricMutableTimeHistogram extends MetricMutableRangeHistogram {
30 private final String rangeType = "TimeRangeCount";
31 private final long[] ranges =
32 {1,3,10,30,100,300,1000,3000,10000,30000,60000,120000,300000,600000};
33 private final AtomicLongArray rangeVals = new AtomicLongArray(ranges.length+1);
34
35 public MetricMutableTimeHistogram(String name, String description) {
36 super(name, description);
37 }
38
39 @Override
40 public String getRangeType() {
41 return rangeType;
42 }
43
44 @Override
45 public long[] getRange() {
46 return ranges;
47 }
48
49 @Override
50 public AtomicLongArray getRangeVals() {
51 return rangeVals;
52 }
53 }