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.Map;
020
021import org.apache.camel.CamelContext;
022import org.apache.camel.Endpoint;
023import org.apache.camel.StaticService;
024import org.apache.camel.util.CamelContextHelper;
025import org.apache.camel.util.LRUSoftCache;
026import org.apache.camel.util.ServiceHelper;
027
028/**
029 * Endpoint registry which is a based on a {@link org.apache.camel.util.LRUSoftCache}.
030 * <p/>
031 * We use a soft reference cache to allow the JVM to re-claim memory if it runs low on memory.
032 */
033public class EndpointRegistry extends LRUSoftCache<EndpointKey, Endpoint> implements StaticService {
034    private static final long serialVersionUID = 1L;
035    private final CamelContext context;
036
037    public EndpointRegistry(CamelContext context) {
038        // do not stop on eviction, as the endpoint may still be in use
039        super(CamelContextHelper.getMaximumEndpointCacheSize(context), CamelContextHelper.getMaximumEndpointCacheSize(context), false);
040        this.context = context;
041    }
042
043    public EndpointRegistry(CamelContext context, Map<EndpointKey, Endpoint> endpoints) {
044        this(context);
045        putAll(endpoints);
046    }
047
048    @Override
049    public void start() throws Exception {
050        resetStatistics();
051    }
052
053    @Override
054    public void stop() throws Exception {
055        if (!isEmpty()) {
056            ServiceHelper.stopServices(values());
057        }
058        purge();
059    }
060
061    /**
062     * Purges the cache
063     */
064    public void purge() {
065        clear();
066    }
067
068    @Override
069    public String toString() {
070        return "EndpointRegistry for " + context.getName() + ", capacity: " + getMaxCacheSize();
071    }
072}