001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.impl;
018
019import java.util.Collections;
020import java.util.Map;
021
022import org.apache.camel.spi.EndpointUtilizationStatistics;
023import org.apache.camel.util.LRUCache;
024
025public class DefaultEndpointUtilizationStatistics implements EndpointUtilizationStatistics {
026
027    private final LRUCache<String, Long> map;
028
029    public DefaultEndpointUtilizationStatistics(int maxCapacity) {
030        this.map = new LRUCache<String, Long>(16, maxCapacity, false);
031    }
032
033    @Override
034    public int maxCapacity() {
035        return map.getMaxCacheSize();
036    }
037
038    @Override
039    public int size() {
040        return map.size();
041    }
042
043    @Override
044    public synchronized void onHit(String uri) {
045        Long counter = map.get(uri);
046        if (counter == null) {
047            counter = 1L;
048            map.put(uri, counter);
049        } else {
050            counter++;
051            map.put(uri, counter);
052        }
053    }
054
055    @Override
056    public void remove(String uri) {
057        map.remove(uri);
058    }
059
060    @Override
061    public Map<String, Long> getStatistics() {
062        return Collections.unmodifiableMap(map);
063    }
064
065    @Override
066    public void clear() {
067        map.clear();
068    }
069}