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Add more Kotlin DSL for sub-flows (#3233)

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* Add more Kotlin DSL for sub-flows

* Introduce `KotlinSplitterEndpointSpec`, `KotlinEnricherSpec` &
`KotlinFilterEndpointSpec` to avoid an explicit use of `IntegrationFlow` usage
from Kotlin DSL
* Fix `AbstractKotlinRouterSpec` to extend `ConsumerEndpointSpec` for access
to more endpoint options as it is with Java DSL for similar specs
* Introduce a `KotlinIntegrationFlowDefinition.publishSubscribe()`
for a `BroadcastCapableChannel` and `vararg` of `KotlinIntegrationFlowDefinition` builders.
This allows us to not introduce a `BroadcastPublishSubscribeSpec` wrapper for Kotlin
and let us to remove `publishSubscribeChannel()` DSL methods for `PublishSubscribeSpec`
since it is covered with the `publishSubscribe(PublishSubscribeChannel())` and
respective set of sub-flows in Kotlin DSL as subscribers
* Use new Kotlin specs in the `KotlinIntegrationFlowDefinition` instead of their
Java variants

* * Mention `kotlin-dsl.adoc` in the ToC
This commit is contained in:
Artem Bilan
2020-04-01 11:06:54 -04:00
committed by GitHub
parent 6d5690fd58
commit 7433e41036
8 changed files with 276 additions and 48 deletions
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10
spring-integration-core/src/test/kotlin/org/springframework/integration/dsl/KotlinDslTests.kt
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@@ -29,9 +29,9 @@ import org.springframework.beans.factory.annotation.Qualifier
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.integration.channel.FluxMessageChannel
import org.springframework.integration.channel.PublishSubscribeChannel
import org.springframework.integration.channel.QueueChannel
import org.springframework.integration.config.EnableIntegration
import org.springframework.integration.core.GenericSelector
import org.springframework.integration.core.MessagingTemplate
import org.springframework.integration.dsl.context.IntegrationFlowContext
import org.springframework.integration.endpoint.MessageProcessorMessageSource
@@ -248,7 +248,13 @@ class KotlinDslTests {
fun messageSourceFlow() =
integrationFlow(MessageProcessorMessageSource { "testSource" },
{ poller { it.trigger(OnlyOnceTrigger()) } }) {
channel { queue("fromSupplierQueue") }
publishSubscribe(PublishSubscribeChannel(),
{
channel { queue("fromSupplierQueue") }
},
{
log<Any>(LoggingHandler.Level.WARN) { "From second subscriber: ${it.payload}"}
})
}
@Bean