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!str #18692 javadsl.FlowGraph.Builder.add()

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* also make factories more consistent by only offering
  FlowGraph.create()
* also remove secondary (edge-based) FlowGraph.Builder DSL
* also improve naming for conversions from Graph to
  Source/Flow/BidiFlow/Sink
This commit is contained in:
Viktor Klang 2015-10-21 22:45:39 +02:00 • committed by Roland Kuhn
parent 0f99a42df9
commit f29d7affbd
120 changed files with 1535 additions and 1897 deletions
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64
akka-docs-dev/rst/scala/code/docs/stream/FlowParallelismDocSpec.scala
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@ -1,5 +1,6 @@
package docs.stream
import akka.stream.FlowShape
import akka.stream.scaladsl.{ FlowGraph, Merge, Balance, Source, Flow }
import akka.stream.testkit.AkkaSpec
@ -37,7 +38,7 @@ class FlowParallelismDocSpec extends AkkaSpec {
val fryingPan: Flow[ScoopOfBatter, Pancake, Unit] =
Flow[ScoopOfBatter].map { batter => Pancake() }
val pancakeChef: Flow[ScoopOfBatter, Pancake, Unit] = Flow() { implicit builder =>
val pancakeChef: Flow[ScoopOfBatter, Pancake, Unit] = Flow.fromGraph(FlowGraph.create() { implicit builder =>
val dispatchBatter = builder.add(Balance[ScoopOfBatter](2))
val mergePancakes = builder.add(Merge[Pancake](2))
@ -49,54 +50,57 @@ class FlowParallelismDocSpec extends AkkaSpec {
// uses of "fryingPan" mean actually different stages in the graph.
dispatchBatter.out(1) ~> fryingPan ~> mergePancakes.in(1)
(dispatchBatter.in, mergePancakes.out)
}
FlowShape(dispatchBatter.in, mergePancakes.out)
})
//#parallelism
}
"Demonstrate parallelized pipelines" in {
//#parallel-pipeline
val pancakeChef: Flow[ScoopOfBatter, Pancake, Unit] = Flow() { implicit builder =>
val pancakeChef: Flow[ScoopOfBatter, Pancake, Unit] =
Flow.fromGraph(FlowGraph.create() { implicit builder =>
val dispatchBatter = builder.add(Balance[ScoopOfBatter](2))
val mergePancakes = builder.add(Merge[Pancake](2))
val dispatchBatter = builder.add(Balance[ScoopOfBatter](2))
val mergePancakes = builder.add(Merge[Pancake](2))
// Using two pipelines, having two frying pans each, in total using
// four frying pans
dispatchBatter.out(0) ~> fryingPan1 ~> fryingPan2 ~> mergePancakes.in(0)
dispatchBatter.out(1) ~> fryingPan1 ~> fryingPan2 ~> mergePancakes.in(1)
// Using two pipelines, having two frying pans each, in total using
// four frying pans
dispatchBatter.out(0) ~> fryingPan1 ~> fryingPan2 ~> mergePancakes.in(0)
dispatchBatter.out(1) ~> fryingPan1 ~> fryingPan2 ~> mergePancakes.in(1)
(dispatchBatter.in, mergePancakes.out)
}
FlowShape(dispatchBatter.in, mergePancakes.out)
})
//#parallel-pipeline
}
"Demonstrate pipelined parallel processing" in {
//#pipelined-parallel
val pancakeChefs1: Flow[ScoopOfBatter, HalfCookedPancake, Unit] = Flow() { implicit builder =>
val dispatchBatter = builder.add(Balance[ScoopOfBatter](2))
val mergeHalfPancakes = builder.add(Merge[HalfCookedPancake](2))
val pancakeChefs1: Flow[ScoopOfBatter, HalfCookedPancake, Unit] =
Flow.fromGraph(FlowGraph.create() { implicit builder =>
val dispatchBatter = builder.add(Balance[ScoopOfBatter](2))
val mergeHalfPancakes = builder.add(Merge[HalfCookedPancake](2))
// Two chefs work with one frying pan for each, half-frying the pancakes then putting
// them into a common pool
dispatchBatter.out(0) ~> fryingPan1 ~> mergeHalfPancakes.in(0)
dispatchBatter.out(1) ~> fryingPan1 ~> mergeHalfPancakes.in(1)
// Two chefs work with one frying pan for each, half-frying the pancakes then putting
// them into a common pool
dispatchBatter.out(0) ~> fryingPan1 ~> mergeHalfPancakes.in(0)
dispatchBatter.out(1) ~> fryingPan1 ~> mergeHalfPancakes.in(1)
(dispatchBatter.in, mergeHalfPancakes.out)
}
FlowShape(dispatchBatter.in, mergeHalfPancakes.out)
})
val pancakeChefs2: Flow[HalfCookedPancake, Pancake, Unit] = Flow() { implicit builder =>
val dispatchHalfPancakes = builder.add(Balance[HalfCookedPancake](2))
val mergePancakes = builder.add(Merge[Pancake](2))
val pancakeChefs2: Flow[HalfCookedPancake, Pancake, Unit] =
Flow.fromGraph(FlowGraph.create() { implicit builder =>
val dispatchHalfPancakes = builder.add(Balance[HalfCookedPancake](2))
val mergePancakes = builder.add(Merge[Pancake](2))
// Two chefs work with one frying pan for each, finishing the pancakes then putting
// them into a common pool
dispatchHalfPancakes.out(0) ~> fryingPan2 ~> mergePancakes.in(0)
dispatchHalfPancakes.out(1) ~> fryingPan2 ~> mergePancakes.in(1)
// Two chefs work with one frying pan for each, finishing the pancakes then putting
// them into a common pool
dispatchHalfPancakes.out(0) ~> fryingPan2 ~> mergePancakes.in(0)
dispatchHalfPancakes.out(1) ~> fryingPan2 ~> mergePancakes.in(1)
(dispatchHalfPancakes.in, mergePancakes.out)
}
FlowShape(dispatchHalfPancakes.in, mergePancakes.out)
})
val kitchen: Flow[ScoopOfBatter, Pancake, Unit] = pancakeChefs1.via(pancakeChefs2)
//#pipelined-parallel