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Turn `func(in: Source[A]) : Source[B]` into a `Flow[A, B]`
How to attach multiple actors as sources to an Akka stream?How to get started with Akka Streams?What is the best way to combine akka-http flow in a scala-stream flowHow to change the content of akka.stream.scaladsl.Source.repeat from within the FlowHow does one control the flow of an Akka Stream based on another streamStreaming past and future data using Akka StreamsAkka Streams: Add a flow which executes and http requestAkka streams store state and sent it as parameter when restart sourceAkka Streams - Choose alternative flow when backpressuredAkka Streams onFailuresWithBackoff not restarting flow
I am using akka-grpc to generate client bindings. They usually have the form of
func[A, B](in: Source[A]) : Source[B],
i.e. they consume a Source[A] and offer a Source[B].
Now, I want to turn func into a Flow[A, B] to use them with akka-stream.
akka-stream akka-grpc
asked Mar 21 at 14:38
user3612643user3612643
5731412
add a comment |
I am using akka-grpc to generate client bindings. They usually have the form of
func[A, B](in: Source[A]) : Source[B],
i.e. they consume a Source[A] and offer a Source[B].
Now, I want to turn func into a Flow[A, B] to use them with akka-stream.
akka-stream akka-grpc
asked Mar 21 at 14:38
user3612643user3612643
5731412
add a comment |
I am using akka-grpc to generate client bindings. They usually have the form of
func[A, B](in: Source[A]) : Source[B],
i.e. they consume a Source[A] and offer a Source[B].
Now, I want to turn func into a Flow[A, B] to use them with akka-stream.
akka-stream akka-grpc
asked Mar 21 at 14:38
user3612643user3612643
5731412
I am using akka-grpc to generate client bindings. They usually have the form of
func[A, B](in: Source[A]) : Source[B],
i.e. they consume a Source[A] and offer a Source[B].
Now, I want to turn func into a Flow[A, B] to use them with akka-stream.
akka-stream akka-grpc
akka-stream akka-grpc
asked Mar 21 at 14:38
user3612643user3612643
5731412
asked Mar 21 at 14:38
user3612643user3612643
5731412
asked Mar 21 at 14:38
user3612643user3612643
5731412
asked Mar 21 at 14:38
user3612643user3612643
5731412
asked Mar 21 at 14:38
user3612643user3612643
5731412
5731412
add a comment |
add a comment |
1 Answer
1
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oldest
votes
The solution is:
def SourceProcessor[In, Out](f : Source[In, NotUsed] => Source[Out, NotUsed]): Flow[In, Out, NotUsed] =
Flow[In].prefixAndTail(0).flatMapConcat case (Nil, in) => f(in)
It uses prefixAndTail to highjack the underyling Source.
answered Mar 22 at 11:34
user3612643user3612643
5731412
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The solution is:
def SourceProcessor[In, Out](f : Source[In, NotUsed] => Source[Out, NotUsed]): Flow[In, Out, NotUsed] =
Flow[In].prefixAndTail(0).flatMapConcat case (Nil, in) => f(in)
It uses prefixAndTail to highjack the underyling Source.
answered Mar 22 at 11:34
user3612643user3612643
5731412
add a comment |
The solution is:
def SourceProcessor[In, Out](f : Source[In, NotUsed] => Source[Out, NotUsed]): Flow[In, Out, NotUsed] =
Flow[In].prefixAndTail(0).flatMapConcat case (Nil, in) => f(in)
It uses prefixAndTail to highjack the underyling Source.
answered Mar 22 at 11:34
user3612643user3612643
5731412
add a comment |
The solution is:
def SourceProcessor[In, Out](f : Source[In, NotUsed] => Source[Out, NotUsed]): Flow[In, Out, NotUsed] =
Flow[In].prefixAndTail(0).flatMapConcat case (Nil, in) => f(in)
It uses prefixAndTail to highjack the underyling Source.
answered Mar 22 at 11:34
user3612643user3612643
5731412
The solution is:
def SourceProcessor[In, Out](f : Source[In, NotUsed] => Source[Out, NotUsed]): Flow[In, Out, NotUsed] =
Flow[In].prefixAndTail(0).flatMapConcat case (Nil, in) => f(in)
It uses prefixAndTail to highjack the underyling Source.
answered Mar 22 at 11:34
user3612643user3612643
5731412
edited Mar 22 at 12:09
answered Mar 22 at 11:34
user3612643user3612643
5731412
answered Mar 22 at 11:34
user3612643user3612643
5731412
answered Mar 22 at 11:34
user3612643user3612643
5731412
5731412
add a comment |
add a comment |
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