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.binding;
018    
019    import org.apache.camel.CamelContextAware;
020    import org.apache.camel.Exchange;
021    import org.apache.camel.Processor;
022    import org.apache.camel.support.ServiceSupport;
023    import org.apache.camel.util.ServiceHelper;
024    
025    /**
026     * Applies a {@link org.apache.camel.spi.Binding} to a consumer
027     */
028    public class BindingConsumerProcessor extends ServiceSupport implements Processor {
029        private final BindingEndpoint endpoint;
030        private final Processor delegateProcessor;
031        private final Processor bindingProcessor;
032    
033        public BindingConsumerProcessor(BindingEndpoint endpoint, Processor delegateProcessor) {
034            this.endpoint = endpoint;
035            this.delegateProcessor = delegateProcessor;
036            this.bindingProcessor = endpoint.getBinding().createConsumeProcessor();
037        }
038    
039        @Override
040        public void process(Exchange exchange) throws Exception {
041            endpoint.pipelineBindingProcessor(bindingProcessor, exchange, delegateProcessor);
042        }
043    
044        @Override
045        protected void doStart() throws Exception {
046            // inject CamelContext
047            if (bindingProcessor instanceof CamelContextAware) {
048                ((CamelContextAware) bindingProcessor).setCamelContext(endpoint.getCamelContext());
049            }
050            if (delegateProcessor instanceof CamelContextAware) {
051                ((CamelContextAware) delegateProcessor).setCamelContext(endpoint.getCamelContext());
052            }
053            ServiceHelper.startServices(bindingProcessor, delegateProcessor);
054        }
055    
056        @Override
057        protected void doStop() throws Exception {
058            ServiceHelper.stopServices(delegateProcessor, bindingProcessor);
059        }
060    }