| /* |
| * Copyright 2014-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onlab.metrics; |
| |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| /** |
| * Components to register for metrics. |
| */ |
| public class MetricsComponent implements MetricsComponentRegistry { |
| private final String name; |
| |
| /** |
| * Registry to hold the Features defined in this Component. |
| */ |
| private final ConcurrentMap<String, MetricsFeature> featuresRegistry = |
| new ConcurrentHashMap<>(); |
| |
| /** |
| * Constructs a component from a name. |
| * |
| * @param newName name of the component |
| */ |
| public MetricsComponent(final String newName) { |
| name = newName; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public MetricsFeature registerFeature(final String featureName) { |
| MetricsFeature feature = featuresRegistry.get(featureName); |
| if (feature == null) { |
| final MetricsFeature createdFeature = |
| new MetricsFeature(featureName); |
| feature = featuresRegistry.putIfAbsent(featureName, createdFeature); |
| if (feature == null) { |
| feature = createdFeature; |
| } |
| } |
| return feature; |
| } |
| } |