What is Int, Out type in Akka (Scala)
I am researching about Akka Stream. When i read an example about Balance in Akka.
What is In and Out type in this example?
def balancer[In, Out](worker: Flow[In, Out, Any], workerCount: Int): Flow[In, Out, NotUsed] = {
import GraphDSL.Implicits._
Flow.fromGraph(GraphDSL.create() { implicit b ⇒
val balancer = b.add(Balance[In](workerCount, waitForAllDownstreams = true))
val merge = b.add(Merge[Out](workerCount))
for (_ ← 1 to workerCount) {
// for each worker, add an edge from the balancer to the worker, then wire
// it to the merge element
balancer ~> worker.async ~> merge
}
FlowShape(balancer.in, merge.out)
})
}
val processedJobs: Source[Result, NotUsed] = myJobs.via(balancer(worker, 3))
scala akka akka-stream
add a comment |
I am researching about Akka Stream. When i read an example about Balance in Akka.
What is In and Out type in this example?
def balancer[In, Out](worker: Flow[In, Out, Any], workerCount: Int): Flow[In, Out, NotUsed] = {
import GraphDSL.Implicits._
Flow.fromGraph(GraphDSL.create() { implicit b ⇒
val balancer = b.add(Balance[In](workerCount, waitForAllDownstreams = true))
val merge = b.add(Merge[Out](workerCount))
for (_ ← 1 to workerCount) {
// for each worker, add an edge from the balancer to the worker, then wire
// it to the merge element
balancer ~> worker.async ~> merge
}
FlowShape(balancer.in, merge.out)
})
}
val processedJobs: Source[Result, NotUsed] = myJobs.via(balancer(worker, 3))
scala akka akka-stream
They are InputType and OutputType for your Flow.
– Ra Ka
Dec 31 '18 at 7:15
add a comment |
I am researching about Akka Stream. When i read an example about Balance in Akka.
What is In and Out type in this example?
def balancer[In, Out](worker: Flow[In, Out, Any], workerCount: Int): Flow[In, Out, NotUsed] = {
import GraphDSL.Implicits._
Flow.fromGraph(GraphDSL.create() { implicit b ⇒
val balancer = b.add(Balance[In](workerCount, waitForAllDownstreams = true))
val merge = b.add(Merge[Out](workerCount))
for (_ ← 1 to workerCount) {
// for each worker, add an edge from the balancer to the worker, then wire
// it to the merge element
balancer ~> worker.async ~> merge
}
FlowShape(balancer.in, merge.out)
})
}
val processedJobs: Source[Result, NotUsed] = myJobs.via(balancer(worker, 3))
scala akka akka-stream
I am researching about Akka Stream. When i read an example about Balance in Akka.
What is In and Out type in this example?
def balancer[In, Out](worker: Flow[In, Out, Any], workerCount: Int): Flow[In, Out, NotUsed] = {
import GraphDSL.Implicits._
Flow.fromGraph(GraphDSL.create() { implicit b ⇒
val balancer = b.add(Balance[In](workerCount, waitForAllDownstreams = true))
val merge = b.add(Merge[Out](workerCount))
for (_ ← 1 to workerCount) {
// for each worker, add an edge from the balancer to the worker, then wire
// it to the merge element
balancer ~> worker.async ~> merge
}
FlowShape(balancer.in, merge.out)
})
}
val processedJobs: Source[Result, NotUsed] = myJobs.via(balancer(worker, 3))
scala akka akka-stream
scala akka akka-stream
asked Dec 31 '18 at 7:06
Toan NguyenToan Nguyen
114
114
They are InputType and OutputType for your Flow.
– Ra Ka
Dec 31 '18 at 7:15
add a comment |
They are InputType and OutputType for your Flow.
– Ra Ka
Dec 31 '18 at 7:15
They are InputType and OutputType for your Flow.
– Ra Ka
Dec 31 '18 at 7:15
They are InputType and OutputType for your Flow.
– Ra Ka
Dec 31 '18 at 7:15
add a comment |
1 Answer
1
active
oldest
votes
From the definition of Flow
:
Flow
A processing stage which has exactly one input and output, which
connects its up- and downstreams by transforming the data elements
flowing through it.
Generally speaking, In
and Out
are type parameters. Specifically, they are used to convey the input type, which is type you put into the stream, and the output type which is the type produced by the stream.
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
From the definition of Flow
:
Flow
A processing stage which has exactly one input and output, which
connects its up- and downstreams by transforming the data elements
flowing through it.
Generally speaking, In
and Out
are type parameters. Specifically, they are used to convey the input type, which is type you put into the stream, and the output type which is the type produced by the stream.
add a comment |
From the definition of Flow
:
Flow
A processing stage which has exactly one input and output, which
connects its up- and downstreams by transforming the data elements
flowing through it.
Generally speaking, In
and Out
are type parameters. Specifically, they are used to convey the input type, which is type you put into the stream, and the output type which is the type produced by the stream.
add a comment |
From the definition of Flow
:
Flow
A processing stage which has exactly one input and output, which
connects its up- and downstreams by transforming the data elements
flowing through it.
Generally speaking, In
and Out
are type parameters. Specifically, they are used to convey the input type, which is type you put into the stream, and the output type which is the type produced by the stream.
From the definition of Flow
:
Flow
A processing stage which has exactly one input and output, which
connects its up- and downstreams by transforming the data elements
flowing through it.
Generally speaking, In
and Out
are type parameters. Specifically, they are used to convey the input type, which is type you put into the stream, and the output type which is the type produced by the stream.
answered Dec 31 '18 at 9:18
Yuval ItzchakovYuval Itzchakov
114k26171240
114k26171240
add a comment |
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They are InputType and OutputType for your Flow.
– Ra Ka
Dec 31 '18 at 7:15