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     */
017    package org.apache.camel.impl;
018    
019    import java.util.Map;
020    
021    import org.apache.camel.CamelContext;
022    import org.apache.camel.Endpoint;
023    import org.apache.camel.Service;
024    import org.apache.camel.util.CamelContextHelper;
025    import org.apache.camel.util.LRUSoftCache;
026    import 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     */
033    public class EndpointRegistry extends LRUSoftCache<EndpointKey, Endpoint> implements Service {
034        private static final long serialVersionUID = 1L;
035        private final CamelContext context;
036    
037        public EndpointRegistry(CamelContext context) {
038            super(CamelContextHelper.getMaximumEndpointCacheSize(context));
039            this.context = context;
040        }
041    
042        public EndpointRegistry(CamelContext context, Map<EndpointKey, Endpoint> endpoints) {
043            this(context);
044            putAll(endpoints);
045        }
046    
047        @Override
048        public void start() throws Exception {
049            resetStatistics();
050        }
051    
052        @Override
053        public void stop() throws Exception {
054            if (!isEmpty()) {
055                ServiceHelper.stopServices(values());
056            }
057            purge();
058        }
059    
060        /**
061         * Purges the cache
062         */
063        public void purge() {
064            clear();
065        }
066    
067        @Override
068        public String toString() {
069            return "EndpointRegistry for " + context.getName() + ", capacity: " + getMaxCacheSize();
070        }
071    }