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GH-2634: Reactor Kafka Binder Customization

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Resolves https://github.com/spring-cloud/spring-cloud-stream/issues/2634

Allow customization of `ReceiverOptions` and `ProducerOptions`.
This commit is contained in:
Gary Russell
2023-01-26 11:21:08 -05:00
committed by Soby Chacko
parent 5810ba60a7
commit a325b8b9fd
7 changed files with 194 additions and 7 deletions
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6
docs/src/main/asciidoc/kafka/kafka-reactive.adoc
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@@ -40,7 +40,11 @@ This is because the underlying binder is built on top of https://projectreactor.
On the consumer side, it makes use of the https://projectreactor.io/docs/kafka/release/reference/#api-guide-receiver[KafkaReceiver] which is a reactive implementation of a Kafka consumer.
Similarly, on the producer side, it uses https://projectreactor.io/docs/kafka/release/reference/#api-guide-sender[KafkaSender] API which is the reactive implementation of a Kafka producer.
Since the foundations of the reactive Kafka binder is built upon a proper reactive Kafka API, applications get the full benefits of using reactive technologies.
Things like automatic backpressure among other reactive capabilities are built-in for the application when using this reactive Kafka binder.
Things like automatic back pressure, among other reactive capabilities, are built-in for the application when using this reactive Kafka binder.
Starting with version 4.0.2, you can customize the `ReceiverOptions` and `SenderOptions` by providing one or more `ReceiverOptionsCustomizer` or `SenderOptionsCustomizer` beans respectively.
They are `BiFunction` s which receive the binding name and initial options, returning the customized options.
The interfaces extend `Ordered` so the customizers will be applied in the order required, when more than one are present.
=== Consuming Records in the Raw Format