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https://issues.apache.org/jira/browse/FLINK-31428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17700323#comment-17700323
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Yufan Sheng commented on FLINK-31428:
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It's better to extend the {{ConsumerInterceptor}} and {{ProducerInterceptor}}
interfaces with extra {{open}} method and {{Serializable}} interface. We will
manually open the interceptor in each parallelism. And no need to add a factory.
> Add user callbacks to PulsarSource and PulsarSink
> --------------------------------------------------
>
> Key: FLINK-31428
> URL: https://issues.apache.org/jira/browse/FLINK-31428
> Project: Flink
> Issue Type: New Feature
> Components: Connectors / Pulsar
> Reporter: Alpha Diallo
> Priority: Major
>
> We'd like to add support for user callbacks in {{PulsarSource}} and
> {{{}PulsarSink{}}}. This enables specific use cases such as event tracing
> which requires access to low level message properties such as message IDs
> after an event is produced, topic partitions, etc...
> The functionality required is similar to {{ConsumerInterceptor}} and
> {{ProducerInterceptor}} in the Pulsar Client. However, there is a case to be
> made for adding new APIs that would help avoid the extra cost of ser/deser
> when getting the message body through the {{Message}} interface in the
> interceptors.
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