Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
HadoopCountersBase |
|
| 1.0;1 |
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.giraph.counters; | |
20 | ||
21 | import org.apache.hadoop.mapreduce.Mapper.Context; | |
22 | ||
23 | /** | |
24 | * Base class for groups of Hadoop Counters. | |
25 | */ | |
26 | public abstract class HadoopCountersBase | |
27 | implements Iterable<GiraphHadoopCounter> { | |
28 | /** Hadoop Context used to create Counters */ | |
29 | private final Context context; | |
30 | /** group to put counters under */ | |
31 | private final String groupName; | |
32 | ||
33 | /** | |
34 | * Initialize with Hadoop Context and group name. | |
35 | * | |
36 | * @param context Hadoop Context to use. | |
37 | * @param groupName String group name to use. | |
38 | */ | |
39 | 0 | protected HadoopCountersBase(Context context, String groupName) { |
40 | 0 | this.context = context; |
41 | 0 | this.groupName = groupName; |
42 | 0 | } |
43 | ||
44 | /** | |
45 | * Get Hadoop Context | |
46 | * | |
47 | * @return Context object used by Hadoop | |
48 | */ | |
49 | public Context getContext() { | |
50 | 0 | return context; |
51 | } | |
52 | ||
53 | /** | |
54 | * Get or create counter with given name and class's group name. | |
55 | * | |
56 | * @param name String name of counter | |
57 | * @return GiraphHadoopCounter found or created | |
58 | */ | |
59 | protected GiraphHadoopCounter getCounter(String name) { | |
60 | 0 | return new GiraphHadoopCounter(context.getCounter(groupName, name)); |
61 | } | |
62 | } |