It required a little bit of Round Robing : -)
class RoundRobinBypassingMerge[A, B] extends FlexiMerge[A, FanInShape2[A, B,
A]](new FanInShape2("RRBMerge"), OperationAttributes.name("RRBMerge")) {
def createMergeLogic(p: PortT): MergeLogic[A] = new MergeLogic[A] {
val read1: State[A] = State[A](Read(p.in0)) { (ctx, input, element) =>
ctx.emit(element)
read2
}
val read2: State[B] = State[B](Read(p.in1)) { (ctx, input, element) =>
read1
}
val readRemaining1: State[A] = State[A](Read(p.in0)) { (ctx, input,
element) =>
ctx.emit(element)
SameState
}
val readRemaining2: State[B] = State[B](Read(p.in1)) { (ctx, input,
element) =>
SameState
}
override def initialState: State[_] = read1
override def initialCompletionHandling = CompletionHandling(
onUpstreamFinish = { (ctx, input) ⇒
ctx.changeCompletionHandling(defaultCompletionHandling)
if (input eq p.in0) readRemaining2 else readRemaining1
},
onUpstreamFailure = { (ctx, _, cause) ⇒
ctx.fail(cause)
SameState
})
}
}
--
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>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
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