spring-cloud / spring-cloud/spring-cloud-stream
Accept multiple ListenerContainerCustomizers
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Description
@dsyer commented on Tue Sep 10 2019
Instead of injecting a single (optional) ListenerContainerCustomizer, we could inject an ObjectProvider<Customizer> and iterate over the provided values using ObjectProvider.orderedSteam(). Many customizer extension points in Spring Boot do this.
See https://github.com/spring-cloud/spring-cloud-stream-binder-kafka/issues/741#issuecomment-529867243
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First steps
- Read the whole issue, then the project's contributing guide.
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the ListenerContainerCustomizer injection point in the spring-cloud-stream Kafka binder and review the referenced ObjectProvider approach. Check how existing Spring Boot customizer extension points use ordered streams, then verify that multiple customizers are accepted and applied in order with the relevant tests.
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Assessment
- Tech stack
- java, kafka, spring
- Domain
- backend, stream-processing
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100