| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.component.spring.integration.adapter; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.camel.Consumer; |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.component.spring.integration.SpringIntegrationBinding; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.beans.factory.DisposableBean; |
| import org.springframework.beans.factory.InitializingBean; |
| import org.springframework.integration.Message; |
| import org.springframework.integration.MessageChannel; |
| import org.springframework.integration.MessageHeaders; |
| import org.springframework.integration.channel.DirectChannel; |
| import org.springframework.integration.core.MessageHandler; |
| |
| /** |
| * A CamelContext will be injected into CameSourceAdapter which will |
| * let Spring Integration channel talk to the CamelContext certain endpoint |
| * |
| * @version |
| */ |
| public class CamelSourceAdapter extends AbstractCamelAdapter implements InitializingBean, DisposableBean { |
| private static final Logger LOG = LoggerFactory.getLogger(CamelSourceAdapter.class); |
| |
| private Consumer consumer; |
| private Endpoint camelEndpoint; |
| private MessageChannel requestChannel; |
| private DirectChannel replyChannel; |
| private final AtomicBoolean initialized = new AtomicBoolean(); |
| |
| public void setRequestChannel(MessageChannel channel) { |
| requestChannel = channel; |
| } |
| |
| public MessageChannel getChannel() { |
| return requestChannel; |
| } |
| |
| public void setReplyChannel(DirectChannel channel) { |
| replyChannel = channel; |
| } |
| |
| protected class ConsumerProcessor implements Processor { |
| public void process(final Exchange exchange) throws Exception { |
| org.springframework.integration.Message request = SpringIntegrationBinding.createSpringIntegrationMessage(exchange); |
| |
| if (exchange.getPattern().isOutCapable()) { |
| exchange.getIn().getHeaders().put(MessageHeaders.REPLY_CHANNEL , replyChannel); |
| |
| // we want to do in-out so the inputChannel is mandatory (used to receive reply from spring integration) |
| if (replyChannel == null) { |
| throw new IllegalArgumentException("ReplyChannel has not been configured on: " + this); |
| } |
| |
| replyChannel.subscribe(new MessageHandler() { |
| public void handleMessage(Message<?> message) { |
| LOG.debug("Received {} from ReplyChannel: {}", message, replyChannel); |
| //TODO set the corralationID |
| SpringIntegrationBinding.storeToCamelMessage(message, exchange.getOut()); |
| } |
| }); |
| } |
| |
| requestChannel.send(request); |
| } |
| } |
| |
| public final void afterPropertiesSet() throws Exception { |
| if (initialized.compareAndSet(false, true)) { |
| initialize(); |
| } |
| } |
| |
| public void destroy() throws Exception { |
| if (consumer != null) { |
| consumer.stop(); |
| } |
| } |
| |
| protected void initialize() throws Exception { |
| // start the service here |
| camelEndpoint = getCamelContext().getEndpoint(getCamelEndpointUri()); |
| consumer = camelEndpoint.createConsumer(new ConsumerProcessor()); |
| consumer.start(); |
| } |
| |
| } |