Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2014-present Open Networking Laboratory |
Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 3 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 7 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 15 | */ |
pankaj | 390abbc | 2014-10-01 17:01:05 -0700 | [diff] [blame] | 16 | package org.onlab.metrics; |
| 17 | |
| 18 | import java.util.concurrent.ConcurrentHashMap; |
| 19 | import java.util.concurrent.ConcurrentMap; |
| 20 | |
| 21 | /** |
| 22 | * Components to register for metrics. |
| 23 | */ |
| 24 | public class MetricsComponent implements MetricsComponentRegistry { |
| 25 | private final String name; |
| 26 | |
| 27 | /** |
| 28 | * Registry to hold the Features defined in this Component. |
| 29 | */ |
| 30 | private final ConcurrentMap<String, MetricsFeature> featuresRegistry = |
| 31 | new ConcurrentHashMap<>(); |
| 32 | |
| 33 | /** |
| 34 | * Constructs a component from a name. |
| 35 | * |
| 36 | * @param newName name of the component |
| 37 | */ |
Jian Li | 7eed417 | 2016-04-07 22:12:03 -0700 | [diff] [blame] | 38 | public MetricsComponent(final String newName) { |
pankaj | 390abbc | 2014-10-01 17:01:05 -0700 | [diff] [blame] | 39 | name = newName; |
| 40 | } |
| 41 | |
Pavlin Radoslavov | df042bd | 2014-10-21 21:46:46 -0700 | [diff] [blame] | 42 | @Override |
| 43 | public String getName() { |
pankaj | 390abbc | 2014-10-01 17:01:05 -0700 | [diff] [blame] | 44 | return name; |
| 45 | } |
| 46 | |
Pavlin Radoslavov | df042bd | 2014-10-21 21:46:46 -0700 | [diff] [blame] | 47 | @Override |
| 48 | public MetricsFeature registerFeature(final String featureName) { |
pankaj | 390abbc | 2014-10-01 17:01:05 -0700 | [diff] [blame] | 49 | MetricsFeature feature = featuresRegistry.get(featureName); |
| 50 | if (feature == null) { |
Pavlin Radoslavov | df042bd | 2014-10-21 21:46:46 -0700 | [diff] [blame] | 51 | final MetricsFeature createdFeature = |
| 52 | new MetricsFeature(featureName); |
pankaj | 390abbc | 2014-10-01 17:01:05 -0700 | [diff] [blame] | 53 | feature = featuresRegistry.putIfAbsent(featureName, createdFeature); |
| 54 | if (feature == null) { |
| 55 | feature = createdFeature; |
| 56 | } |
| 57 | } |
| 58 | return feature; |
| 59 | } |
| 60 | } |