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.component.direct;
018    
019    import org.apache.camel.AsyncCallback;
020    import org.apache.camel.AsyncProcessor;
021    import org.apache.camel.Exchange;
022    import org.apache.camel.impl.DefaultConsumer;
023    import org.apache.camel.impl.DefaultProducer;
024    import org.apache.camel.impl.converter.AsyncProcessorTypeConverter;
025    import org.apache.commons.logging.Log;
026    import org.apache.commons.logging.LogFactory;
027    
028    /**
029     * @version $Revision: 36321 $
030     */
031    public class DirectProducer<E extends Exchange> extends DefaultProducer implements AsyncProcessor {
032        private static final transient Log LOG = LogFactory.getLog(DirectProducer.class);
033        private DirectEndpoint<E> endpoint;
034    
035        public DirectProducer(DirectEndpoint<E> endpoint) {
036            super(endpoint);
037            this.endpoint = endpoint;
038        }
039    
040        public void process(Exchange exchange) throws Exception {
041            if (endpoint.getConsumers().isEmpty()) {
042                LOG.warn("No getConsumers() available on " + this + " for " + exchange);
043            } else {
044                for (DefaultConsumer<E> consumer : endpoint.getConsumers()) {
045                    consumer.getProcessor().process(exchange);
046                }
047            }
048        }
049    
050        public boolean process(Exchange exchange, AsyncCallback callback) {
051            int size = endpoint.getConsumers().size();
052            if (size == 0) {
053                LOG.warn("No getConsumers() available on " + this + " for " + exchange);
054            } else {
055                if (size > 1) {
056                    // Too hard to do multiple async.. do it sync
057                    try {
058                        for (DefaultConsumer<E> consumer : endpoint.getConsumers()) {
059                            consumer.getProcessor().process(exchange);
060                        }
061                    } catch (Throwable error) {
062                        exchange.setException(error);
063                    }
064                } else {
065                    for (DefaultConsumer<E> consumer : endpoint.getConsumers()) {
066                        AsyncProcessor processor = AsyncProcessorTypeConverter.convert(consumer.getProcessor());
067                        return processor.process(exchange, callback);
068                    }
069                }
070            }
071            callback.done(true);
072            return true;
073        }
074    }