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Use suspending style filter function in Kotlin code sample #30402

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Use suspending style filter function in Kotlin code sample #30402

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3b05c0b
use suspending style filter function in kotlin code sample
jbotuck Apr 30, 2023
7cda780
add missed releaseBody call
jbotuck Apr 30, 2023
4a272d9
use Dispatchers.Unconfined in ExchangeFilterFunction example
jbotuck May 2, 2023
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21 changes: 9 additions & 12 deletions framework-docs/src/docs/asciidoc/web/webflux-webclient.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -1027,19 +1027,16 @@ any response content, whether expected or not, is released:
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
.Kotlin
----
fun renewTokenFilter(): ExchangeFilterFunction? {
return ExchangeFilterFunction { request: ClientRequest?, next: ExchangeFunction ->
next.exchange(request!!).flatMap { response: ClientResponse ->
fun renewTokenFilter(): ExchangeFilterFunction {
return ExchangeFilterFunction { request: ClientRequest, next: ExchangeFunction ->
mono (Dispatchers.Unconfined){
val response = next.exchange(request).awaitSingle()
if (response.statusCode().value() == HttpStatus.UNAUTHORIZED.value()) {
return@flatMap response.releaseBody()
.then(renewToken())
.flatMap { token: String? ->
val newRequest = ClientRequest.from(request).build()
next.exchange(newRequest)
}
} else {
return@flatMap Mono.just(response)
}
response.releaseBody().awaitSingleOrNull()
val token = renewToken()
val newRequest = ClientRequest.from(request).build()
next.exchange(newRequest).awaitSingle()
} else response
}
}
}
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