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.spring.util;
018    
019    import java.util.concurrent.RejectedExecutionHandler;
020    import java.util.concurrent.ScheduledExecutorService;
021    import java.util.concurrent.ThreadFactory;
022    
023    import org.apache.camel.CamelContext;
024    import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
025    
026    /**
027     * A Camel extension of Spring's {@link ThreadPoolTaskScheduler} which uses the
028     * {@link org.apache.camel.spi.ExecutorServiceManager} to create and destroy the
029     * thread pool, which ensures the thread pool is also managed and consistent with
030     * other usages of thread pools in Camel.
031     */
032    public class CamelThreadPoolTaskScheduler extends ThreadPoolTaskScheduler {
033        
034        private static final long serialVersionUID = 1L;
035        private final CamelContext camelContext;
036        private final Object source;
037        private final String name;
038    
039        public CamelThreadPoolTaskScheduler(CamelContext camelContext, Object source, String name) {
040            this.camelContext = camelContext;
041            this.source = source;
042            this.name = name;
043        }
044    
045        @Override
046        protected ScheduledExecutorService createExecutor(int poolSize, ThreadFactory threadFactory, RejectedExecutionHandler rejectedExecutionHandler) {
047            return camelContext.getExecutorServiceManager().newScheduledThreadPool(source, name, poolSize);
048        }
049    
050        @Override
051        public void shutdown() {
052            camelContext.getExecutorServiceManager().shutdownNow(getScheduledExecutor());
053        }
054    }