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.util;
018    
019    import java.util.concurrent.Callable;
020    import java.util.concurrent.ExecutorService;
021    import java.util.concurrent.Future;
022    
023    import org.apache.camel.Exchange;
024    import org.apache.camel.Processor;
025    
026    /**
027     * Helper methods for AsyncProcessor objects.
028     */
029    public final class AsyncProcessorHelper {
030        
031        private AsyncProcessorHelper() {
032            // utility class
033        }
034    
035        /**
036         * Processes the exchange async.
037         *
038         * @param executor  executor service
039         * @param processor the processor
040         * @param exchange  the exchange
041         * @return a future handle for the task being executed asynchronously
042         */
043        public static Future<Exchange> asyncProcess(final ExecutorService executor, final Processor processor, final Exchange exchange) {
044            Callable<Exchange> task = new Callable<Exchange>() {
045                public Exchange call() throws Exception {
046                    processor.process(exchange);
047                    return exchange;
048                }
049            };
050    
051            return executor.submit(task);
052        }
053    }