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.kotlinx.kotlinx-coroutines-reactor.1.9.0.source-code.ReactorContextInjector.kt Maven / Gradle / Ivy

package kotlinx.coroutines.reactor

import kotlinx.coroutines.reactive.*
import org.reactivestreams.*
import reactor.core.publisher.*
import reactor.util.context.*
import kotlin.coroutines.*

internal class ReactorContextInjector : ContextInjector {
    /**
     * Injects all values from the [ReactorContext] entry of the given coroutine context
     * into the downstream [Context] of Reactor's [Publisher] instances of [Mono] or [Flux].
     */
    override fun  injectCoroutineContext(publisher: Publisher, coroutineContext: CoroutineContext): Publisher {
        val reactorContext = coroutineContext[ReactorContext]?.context ?: return publisher
        return when(publisher) {
            is Mono -> publisher.contextWrite(reactorContext)
            is Flux -> publisher.contextWrite(reactorContext)
            else -> publisher
        }
    }
}