GraphStageLogic has getAsyncCallback. You define its handler method which
returns an AsyncCallback. Then call AsyncCallback.invoke This is needed to
re-enter the GraphStage whenever you return a Future in a custom stage.
scalaRSF.onComplete {
case Success(rs) => {
val successCallback = getAsyncCallback{
(_: Unit) => {
if(mustFinish) completeStage() else pull(in)
waitForHandler = false
}
}
successCallback.invoke(rs)
}
Gary Struthers
https://garyaiki.github.io/dendrites/
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