james-bright-helix opened a new issue #9803: URL: https://github.com/apache/pulsar/issues/9803
#### Expected behavior I should be able to add and modify properties on a message in `ConsumerInterceptor` and `ProducerInterceptor`. Added or modified properties should be reflected when accessing them through the Message interface. Redelivery through `reconsumeLater` and `negativeAck` should have modified properties set. Additionally, I don't think it should be necessary to cast to implementation classes to be able to modify the properties. I'm basing my interceptor implementations on [InterceptorsTest](https://github.com/apache/pulsar/blob/master/pulsar-broker/src/test/java/org/apache/pulsar/client/api/InterceptorsTest.java) Apologies if there is a better way to mutate a message but I couldn't find any examples other than this test. #### Actual behavior `ProducerInterceptor` works as expected and the property is set on the resulting message however, `ConsumerInterceptor` the properties are only accessible if you cast to implementations and access the message builder and not in message properties. If you retry the message with `reconsumeLater` then the properties on the retried message is not set. My use case was to set a consumption count which is incremented in a interceptor or client code to allow us to implement an incremental back-off with `reconsumeLater`. #### Steps to reproduce You can reproduce by modifying `testConsumerInterceptorWithSingleTopicSubscribe` in [InterceptorsTest](https://github.com/apache/pulsar/blob/master/pulsar-broker/src/test/java/org/apache/pulsar/client/api/InterceptorsTest.java) to use the `Message` interface rather than iterating over the properties in the message builder. ``` MessageImpl<String> msg = (MessageImpl<String>) ((TopicMessageImpl<String>) received).getMessage(); for (KeyValue keyValue : msg.getMessageBuilder().getPropertiesList()) { if ("beforeConsumer".equals(keyValue.getKey())) { keyCount++; } } ``` #### System configuration **Pulsar version**: 2.6.3 and 2.7.0 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
