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GH-2292 Update documentation explaining reactive/imparative composition

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Resolves #2292
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Oleg Zhurakousky
2022-03-11 17:22:49 +01:00
parent f3ccc7b72d
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core/docs/src/main/asciidoc/spring-cloud-stream.adoc
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@@ -565,6 +565,13 @@ public Function<Flux<?>, Mono<Void>>consumer() {
But if you do need to write an explicit `Consumer<Flux<?>>`, remember to subscribe to the incoming Flux.
Also, keep in mind that the same rule applies for function composition when mixing reactive and imperative functions.
Spring Cloud Function indeed supports composing reactive functions with imperative, however you must be aware of certain limitations.
For example, assume you have composed reactive function with imperative consumer.
The result of such composition is a reactive `Consumer`. However, there is no way to subscribe to such consumer as discussed earlier in this section,
so this limitation can only be addressed by either making your consumer reactive and subscribing manually (as discussed earlier), or changing your function to be imperative.
====== Polling Configuration Properties
The following properties are exposed (although deprecated since version 3.2) by Spring Cloud Stream and are prefixed with the `spring.cloud.stream.poller`: