[jira] [Assigned] (CAMEL-16921) KafkaSpanDecorator sometimes sets the wrong message_bus.destination tag value

["Claus Ibsen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-16921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen reassigned CAMEL-16921:
-----------------------------------

    Assignee: Claus Ibsen

> KafkaSpanDecorator sometimes sets the wrong message_bus.destination tag value
> -----------------------------------------------------------------------------
>
>                 Key: CAMEL-16921
>                 URL: https://issues.apache.org/jira/browse/CAMEL-16921
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-tracing
>            Reporter: James Netherton
>            Assignee: Claus Ibsen
>            Priority: Minor
>             Fix For: 3.12.0
>
>
> Consider a route like:
> from("kafka:foo")
> .to("kafka:bar")
> When you view the trace span for the producer, the message_bus.destination tag contains "foo". I'd expect it to be "bar" (as that's what we are producing to).
> The logic to determine the destination can probably be improved a bit:
> https://github.com/apache/camel/blob/main/components/camel-tracing/src/main/java/org/apache/camel/tracing/decorators/KafkaSpanDecorator.java#L52-L59
> It looks up an exchange header "kafka.TOPIC". The problem in this particular scenario is that there will be a value present in the exchange passed from the "kafka:foo" consumer. The Kafka header filter will have not yet stripped it when the tracing EventNotifier bits run, so an incorrect value is used for the span name & tag.
> Maybe it could always look up the topic name from the endpoint URI options instead of relying on the header.



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