[jira] [Created] (CAMEL-15121) Interchanged use of HeaderFilterStrategy methods in camel-kafka

["Stefan Burkard (Jira)" <ji...@apache.org>]

Stefan Burkard created CAMEL-15121:
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             Summary: Interchanged use of HeaderFilterStrategy methods in camel-kafka
                 Key: CAMEL-15121
                 URL: https://issues.apache.org/jira/browse/CAMEL-15121
             Project: Camel
          Issue Type: Bug
          Components: camel-kafka
    Affects Versions: 3.3.0
            Reporter: Stefan Burkard


While trying to create a custom HeaderFilterStrategy for camel-kafka I noticed that the two methods of the strategy are used interchanged.
 * The {{KafkaConsumer}} calls {{applyFilterToCamelHeaders}}
 * The {{KafkaProducer}} calls {{applyFilterToExternalHeaders}}

According to the [HeaderFilterStrategy Interface|https://github.com/apache/camel/blob/b9a3117f19dd19abd2ea8b789c42c3e86fe4c488/core/camel-api/src/main/java/org/apache/camel/spi/HeaderFilterStrategy.java], it should be the other way round.

I guess this bug is there since the beginning of the component (therefore affects all released versions).

Since this is just a method switch, it is a perfect exercise for me to clone/build the camel source and send a pull request.

As easy as the code is to fix, this is sort of a breaking change for all existing (intentionally wrong) custom HeaderFilterStrategies for camel-kafka.



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