/**
* 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;
import java.util.HashMap;
import java.util.Map;
import org.apache.camel.AsyncCallback;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.RuntimeCamelException;
import org.apache.camel.impl.DefaultProducer;
import org.apache.camel.spring.SpringCamelContext;
import org.apache.camel.util.AsyncProcessorHelper;
import org.apache.camel.util.ObjectHelper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.integration.channel.BeanFactoryChannelResolver;
import org.springframework.integration.channel.ChannelResolver;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.core.Message;
import org.springframework.integration.core.MessageChannel;
import org.springframework.integration.core.MessageHeaders;
import org.springframework.integration.message.MessageHandler;
/**
* A producer of exchanges for the Spring Integration
* Please specify the outputChannel in the endpoint url for this producer.
* If the message pattern is inOut, the inputChannel property
* should be set for receiving the response message.
* @version $Revision: 711528 $
*/
public class SpringIntegrationProducer extends DefaultProducer<SpringIntegrationExchange> implements AsyncProcessor {
private static final transient Log LOG = LogFactory.getLog(SpringIntegrationProducer.class);
private SpringCamelContext context;
private DirectChannel inputChannel;
private MessageChannel outputChannel;
private String outputChannelName;
private ChannelResolver channelResolver;
private SpringIntegrationEndpoint endpoint;
public SpringIntegrationProducer(SpringIntegrationEndpoint endpoint) {
super(endpoint);
this.endpoint = endpoint;
context = (SpringCamelContext) endpoint.getCamelContext();
if (context != null && endpoint.getMessageChannel() == null) {
outputChannelName = endpoint.getDefaultChannel();
channelResolver = new BeanFactoryChannelResolver(context.getApplicationContext());
if (ObjectHelper.isNullOrBlank(outputChannelName)) {
outputChannelName = endpoint.getInputChannel();
}
if (ObjectHelper.isNullOrBlank(outputChannelName)) {
throw new RuntimeCamelException("Can't find the right outputChannelName, "
+ "please check the endpoint uri outputChannel part!");
} else {
outputChannel = channelResolver.resolveChannelName(outputChannelName);
}
} else {
if (endpoint.getMessageChannel() != null) {
outputChannel = endpoint.getMessageChannel();
} else {
throw new RuntimeCamelException("Can't find the right message channel, please check your configuration.");
}
}
if (endpoint.isInOut()) {
endpoint.setExchangePattern(ExchangePattern.InOut);
// we need to setup right inputChannel for further processing
if (ObjectHelper.isNullOrBlank(endpoint.getInputChannel())) {
throw new RuntimeCamelException("Can't find the right inputChannel, "
+ "please check the endpoint uri inputChannel part!");
} else {
inputChannel = (DirectChannel)channelResolver.resolveChannelName(endpoint.getInputChannel());
}
} else {
endpoint.setExchangePattern(ExchangePattern.InOnly);
}
}
public void process(Exchange exchange) throws Exception {
AsyncProcessorHelper.process(this, exchange);
}
public boolean process(final Exchange exchange, final AsyncCallback callback) {
Map<String, Object> headers = new HashMap<String, Object>();
if (exchange.getPattern().isOutCapable()) {
headers.put(MessageHeaders.REPLY_CHANNEL , inputChannel);
inputChannel.subscribe(new MessageHandler() {
public void handleMessage(Message<?> message) {
SpringIntegrationBinding.storeToCamelMessage(message, exchange.getOut());
callback.done(true);
}
});
}
org.springframework.integration.core.Message siOutmessage = SpringIntegrationBinding.createSpringIntegrationMessage(exchange, headers);
outputChannel.send(siOutmessage);
if (!exchange.getPattern().isOutCapable()) {
callback.done(true);
}
return true;
}
}