Allow suspending functions in EventPublisherEvent handlers

Would be nice to be able to do something lie this

fun main() {
    runBlocking {
        val retry = Retry.of(
            "test-retry", custom<Any>()
                .maxAttempts(4)
                .retryExceptions(SomeException::class.java)
                .waitDuration(Duration.ofMillis(1000))
                .build()
        )

        retry.eventPublisher.onRetry { println("Retry happened $it"); cleanupBeforeRetry() }
        val i2 = retry.executeSuspendFunction { doSomething() }
        print(i2)
    }
}

suspend fun cleanupBeforeRetry() {
    delay(10)
    println("Cleanup ")
}
var i = 0
suspend fun doSomething(): Any {
    println("Trying")
    delay(100)
    if (i < 4) {
        throw SomeException("asdf")
    }
    return i
}

[maczikasz]

Sure syntactically not a problem, semantically I am not familiar enough with the code base, to decide whether it will work properly 😃 but I will give it a try

[RobWin]

The core of Resilience4j doesn’t use Kotlin. I can’t change the internal event processor. But could you add extension functions? Like here? -> https://github.com/resilience4j/resilience4j/blob/master/resilience4j-kotlin/src/main/kotlin/io/github/resilience4j/kotlin/circuitbreaker/CircuitBreaker.kt