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 */
017package org.apache.camel.component.binding;
018
019import org.apache.camel.CamelContextAware;
020import org.apache.camel.Exchange;
021import org.apache.camel.Processor;
022import org.apache.camel.support.ServiceSupport;
023import org.apache.camel.util.ServiceHelper;
024
025/**
026 * Applies a {@link org.apache.camel.spi.Binding} to a consumer
027 */
028public 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}