| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.source.cache; |
| |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.TimelineMetricConfiguration; |
| |
| public class InternalMetricsCacheProvider { |
| private Map<String, InternalMetricsCache> metricsCacheMap = new ConcurrentHashMap<>(); |
| private static final InternalMetricsCacheProvider instance = new InternalMetricsCacheProvider(); |
| |
| private InternalMetricsCacheProvider() { |
| } |
| |
| public static InternalMetricsCacheProvider getInstance() { |
| return instance; |
| } |
| |
| public InternalMetricsCache getCacheInstance(String instanceName) { |
| if (metricsCacheMap.containsKey(instanceName)) { |
| return metricsCacheMap.get(instanceName); |
| } else { |
| TimelineMetricConfiguration conf = TimelineMetricConfiguration.getInstance(); |
| InternalMetricsCache cache = new InternalMetricsCache(instanceName, |
| conf.getInternalCacheHeapPercent(instanceName)); |
| |
| metricsCacheMap.put(instanceName, cache); |
| return cache; |
| } |
| } |
| } |