Package org.apache.camel.component.aws.sqs

Source Code of org.apache.camel.component.aws.sqs.SqsProducer

/**
* 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.aws.sqs;

import com.amazonaws.services.sqs.AmazonSQSClient;
import com.amazonaws.services.sqs.model.SendMessageRequest;
import com.amazonaws.services.sqs.model.SendMessageResult;

import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.NoFactoryAvailableException;
import org.apache.camel.impl.DefaultProducer;
import org.apache.camel.util.URISupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
* A Producer which sends messages to the Amazon Web Service Simple Queue Service
* <a href="http://aws.amazon.com/sqs/">AWS SQS</a>
*
*/
public class SqsProducer extends DefaultProducer {
   
    private static final transient Logger LOG = LoggerFactory.getLogger(SqsProducer.class);
   
    public SqsProducer(SqsEndpoint endpoint) throws NoFactoryAvailableException {
        super(endpoint);
    }

    public void process(Exchange exchange) throws Exception {
        String body = exchange.getIn().getBody(String.class);
        SendMessageRequest request = new SendMessageRequest(getQueueUrl(), body);

        LOG.trace("Sending request [{}] from exchange [{}]...", request, exchange);
       
        SendMessageResult result = getClient().sendMessage(request);
       
        LOG.trace("Received result [{}]", result);
       
        Message message = getMessageForResponse(exchange);
        message.setHeader(SqsConstants.MESSAGE_ID, result.getMessageId());
        message.setHeader(SqsConstants.MD5_OF_BODY, result.getMD5OfMessageBody());
    }

    private Message getMessageForResponse(Exchange exchange) {
        if (exchange.getPattern().isOutCapable()) {
            Message out = exchange.getOut();
            out.copyFrom(exchange.getIn());
            return out;
        }
       
        return exchange.getIn();
    }
   
    protected AmazonSQSClient getClient() {
        return getEndpoint().getClient();
    }
   
    protected String getQueueUrl() {
        return getEndpoint().getQueueUrl();
    }
   
    @Override
    public SqsEndpoint getEndpoint() {
        return (SqsEndpoint) super.getEndpoint();
    }
   
    @Override
    public String toString() {
        return "SqsProducer[" + URISupport.sanitizeUri(getEndpoint().getEndpointUri()) + "]";
    }
}
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