I have a problem while forwarding data received from tcp to a stream . It
works with hardcoded version but does not work with dynamic balance graph .
If i change the rtcpgraph with rtcpgraphdynamic, data does not flow into
stream as if its run method is missing . Data arrives at publisher sink's
materialized value (ret ), but does not continue further into stream. This
dynamic graph works if i read data from file .
val clsParallelPartialGraph = GraphDSL.create(){
implicit builder =>
val balance : UniformFanOutShape[(Array[Int]),(Array[Int])]
= builder.add(Balance[(Array[Int])](ParallelCount ))
(0 until clsParallelCount).foreach { x =>
balance ~> flowClusterings(x) ~>Sink.ignore
}
SinkShape(balance.in)
}
val connectionRet = connections.to(Sink.foreach { connection =>
printOrNot(s"New connection from:
${connection.remoteAddress}")
val sink1 = Sink.asPublisher[ByteString](fanout = true)
val sourceTemp = Source.maybe[ByteString]
val flowsinksource = Flow.fromSinkAndSourceMat(sink1,
sourceTemp)(Keep.left)
val ret : Publisher[ByteString] =
connection.handleWith(flowsinksource
)
val sourcetcp = Source.fromPublisher(ret)
.via(Framing.delimiter(
ByteString("\n"),
maximumFrameLength = 256,
allowTruncation = true))
.via(Flow[ByteString].map{x =>
val decoded = x.decodeString("UTF-8")
println("decoded :" + decoded)
decoded
})
val rgraphtcp = RunnableGraph.fromGraph(GraphDSL.create(
/*sinkToJsTuple*/){ implicit builder =>
val balance : UniformFanOutShape[(Array[Int]),(Array[Int
] )] = builder.add(Balance[(Array[Int])](ParallelCount ))
sourcetcp ~> flow1tcp ~> flow2 ~> flowMain ~>
balance ~> flowClustering0 ~>Sink.ignore
balance ~> flowClustering1 ~>Sink.ignore
balance ~> flowClustering2 ~>Sink.ignore
ClosedShape
})
val mattcp = rgraphtcp.run()
/*
val rgraphtcpdynamic =
RunnableGraph.fromGraph(GraphDSL.create(){ implicit builder =>
val balance :
UniformFanOutShape[(Array[Int]),(Array[Int] )] =
builder.add(Balance[(Array[Int] )](ParallelCount ))
sourcetcp ~> flow1tcp ~> flow2 ~> flowMain ~>
clsParallelPartialGraph
ClosedShape
})
val mattcp = rgraphtcpdynamic.run()
*/
}).run
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