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chore: fuse handlers in CancellationBarrierGraphStage #414

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merged 1 commit into from
Nov 28, 2024
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chore: fuse handlers in CancellationBarrierGraphStage #414

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42 changes: 17 additions & 25 deletions runtime/src/main/scala/org/apache/pekko/grpc/internal/CancellationBarrierGraphStage.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -30,31 +30,23 @@ class CancellationBarrierGraphStage[T] extends GraphStage[FlowShape[T, T]] {
override val shape: FlowShape[T, T] = FlowShape(in, out)

override def createLogic(inheritedAttributes: Attributes): GraphStageLogic =
new GraphStageLogic(shape) {
setHandler(
in,
new InHandler {
override def onPush(): Unit = emit(out, grab(in))
})

setHandler(
out,
new OutHandler {
override def onPull(): Unit = pull(in)

override def onDownstreamFinish(cause: Throwable): Unit = {
if (!hasBeenPulled(in))
new GraphStageLogic(shape) with InHandler with OutHandler {
override def onPush(): Unit = emit(out, grab(in))
override def onPull(): Unit = pull(in)

override def onDownstreamFinish(cause: Throwable): Unit = {
if (!hasBeenPulled(in))
pull(in)

setHandler(
in,
new InHandler {
override def onPush(): Unit = {
grab(in)
pull(in)

setHandler(
in,
new InHandler {
override def onPush(): Unit = {
grab(in)
pull(in)
}
})
}
})
}
})
}
setHandlers(in, out, this)
}
}
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