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.CamelExchangeException;
022    import org.apache.camel.Exchange;
023    import org.apache.camel.impl.DefaultProducer;
024    import org.apache.camel.util.AsyncProcessorConverterHelper;
025    import org.apache.camel.util.AsyncProcessorHelper;
026    import org.slf4j.Logger;
027    import org.slf4j.LoggerFactory;
028    
029    /**
030     * The direct producer.
031     *
032     * @version 
033     */
034    public class DirectProducer extends DefaultProducer implements AsyncProcessor {
035        private static final transient Logger LOG = LoggerFactory.getLogger(DirectProducer.class);
036        private DirectEndpoint endpoint;
037    
038        public DirectProducer(DirectEndpoint endpoint) {
039            super(endpoint);
040            this.endpoint = endpoint;
041        }
042    
043        public void process(Exchange exchange) throws Exception {
044            if (endpoint.getConsumer() == null) {
045                LOG.warn("No consumers available on endpoint: " + endpoint + " to process: " + exchange);
046                throw new CamelExchangeException("No consumers available on endpoint: " + endpoint, exchange);
047            } else {
048                endpoint.getConsumer().getProcessor().process(exchange);
049            }
050        }
051    
052        public boolean process(Exchange exchange, AsyncCallback callback) {
053            if (endpoint.getConsumer() == null) {
054                LOG.warn("No consumers available on endpoint: " + endpoint + " to process: " + exchange);
055                // indicate its done synchronously
056                exchange.setException(new CamelExchangeException("No consumers available on endpoint: " + endpoint, exchange));
057                callback.done(true);
058                return true;
059            } else {
060                AsyncProcessor processor = AsyncProcessorConverterHelper.convert(endpoint.getConsumer().getProcessor());
061                return AsyncProcessorHelper.process(processor, exchange, callback);
062            }
063        }
064    
065    }