Hi,
I cannot figure out, how would I do something like :
bucketOpt match {
case None =>
*// ??? How to return just a dummy partial graph ???*
case Some(bucket) =>
Flow() { implicit b =>
import FlowGraph.Implicits._
val broadcast = b.add(Broadcast[Array[ResCtx]](2))
val uniqueResourceFilter = Flow[Array[ResCtx]].transform(() => new
UniqueResourceFilter)
val backup = Flow[Iterable[Resource]].mapAsyncUnordered(4) { resources =>
Future.sequence(
resources.map( res => S3BackupFlow.backup(bucket, res, res.name,
deleteLocal))
)
}
broadcast.out(0) ~> uniqueResourceFilter ~> backup ~> Sink.ignore
(broadcast.in, broadcast.out(1))
}
}
Also it is a mystery to me how to grab just an inlet stream, for doing
something like :
Flow() { implicit b =>
import FlowGraph.Implicits._
val uniqueResourceFilter = Flow[Array[ResCtx]].transform(() => new
UniqueResourceFilter)
val merge = b.add(Merge[Array[ResCtx]](2))
???in??? ~> filter ~> broadcast.out(0) ~> uniqueResourceFilter ~> backup ~>
merge.in(0)
~> broadcast.out(1) ~> uniqueResourceFilter ~> backup ~>
merge.in(1)
(???in???, merge.out)
}
Thanks, Jakub
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