Пытаюсь ловить ошибки в фильтрах...

filters.kt

abstract class Filter<T /*: ITEvent */> {
    abstract suspend fun test(value: T): Boolean
}

class TrueFilter<T: ITEvent>(val sleep: Int, val num: Int, val throwable: Throwable? = null): Filter<T>() {
    override suspend fun test(value: T): Boolean {
        println("Enter $num filter, sleeping for $sleep seconds")
        delay(sleep.seconds.inMilliseconds.longValue)
        println("Success $num filter, returning `true`")
        throw throwable ?: return true
    }
}

handler.kt

data class Handler<T /*: ITEvent */>(
        val filters: Array<out Filter<T>>,
        val func: suspend (T) -> Unit,
        val name: String? = null,
        val logger: KLogger? = null // TODO: make it non-null
    ) {
    /**
     * Test all [filters] of this handler
     *
     * @return true, if all filters passed, else false
     */
    suspend fun test(value: T): Boolean = coroutineScope {
        val ch = Channel<Boolean>()

        launch {
            val jobs = mutableListOf<Job>()
            filters.forEach {
                jobs.add(launch { ch.send(it.test(value)) })
            }

            jobs.joinAll()
            ch.close()
        }

        for (data in ch) {
            if (!data) {
                coroutineContext.cancelChildren() // to kill the rest of tasks we  don't need
                return@coroutineScope false
            }
        }
        return@coroutineScope true
    }
}

main.kt

fun main(args: Array<String>) = runBlocking<Unit> {
    val trueHandler = Handler<String>(
            arrayOf(
                    TrueFilter(1, 0),
                    TrueFilter(3, 1)
            ),
            {}
    )

    if (trueHandler.test("")) println("trueHandler") else println("not trueHander")

    val eHandler = Handler<String>(
            arrayOf(
                    TrueFilter(1, 0),
                    TrueFilter(2, 1, Exception("test")),
                    TrueFilter(3, 2)
            ),
            {}
    )

    if (eHandler.test("")) println("eHandler") else println("not eHandler")
}