[CAMEL-9101] RabbitMQ specific message properties are forwarded as message headers

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.15.2
• Fix Version/s: 2.16.1, 2.17.0
• Component/s: camel-rabbitmq
• Estimated Complexity: Unknown
• Assignee: Andrea Cosentino
• Reporter: Serge Smertin
• Created: 25/Aug/15 11:31
• Updated: 24/Oct/15 08:29
• Resolved: 24/Oct/15 08:29

Description

org.apache.camel.component.rabbitmq.RabbitMQProducer#buildProperties does not remove message headers from exchange after property is set, leading to message header pollution.

so constructs like

final Object contentType = exchange.getIn().getHeader(RabbitMQConstants.CONTENT_TYPE);
        if (contentType != null) {
            properties.contentType(contentType.toString());
        }

must be rewritten as

final Object contentType = exchange.getIn().removeHeader(RabbitMQConstants.CONTENT_TYPE);
        if (contentType != null) {
            properties.contentType(contentType.toString());
        }

I don't think that these are used in business logic as this is solely transport specific.