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From "Tomohisa Igarashi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-7673) subscribeTopicName leaks out as a property and used as a destination for mqtt producer, causes infinite delivery
Date Mon, 11 Aug 2014 06:33:11 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-7673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14092498#comment-14092498
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Tomohisa Igarashi commented on CAMEL-7673:
------------------------------------------

I would give +1 that the topic name property should be removed after it's used by producer
as done in camel-jms producer btw.

> subscribeTopicName leaks out as a property and used as a destination for mqtt producer,
causes infinite delivery
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-7673
>                 URL: https://issues.apache.org/jira/browse/CAMEL-7673
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-mqtt
>    Affects Versions: 2.12.2, 2.14.0
>            Reporter: Tomohisa Igarashi
>            Assignee: Willem Jiang
>
> MQTT consumer sets its subscribeTopicName as a exchange property, and it will be used
by MQTT producer as a destination if it exists in the route.
> If you have a following route:
> {code}
> from("mqtt:input?subscribeTopicName=topicIn")
>         .to("mqtt:output?publishTopicName=topicOut");
> {code}
> MQTT consumer put "topicIn" to "MQTTTopicPropertyName" exchange property, and MQTT producer
uses this property to determine a destination topic to publish. Then MQTT producer ignores
publishTopicName and send a message to "topicIn", so MQTT consumer consumes the message again,
eventually it causes infinite delivery. We need to stop this property to be used as a destination
for producer.



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