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