final class Pulse[T] extends SimpleLinearGraphStage[T]

Signals demand only once every interval (pulse) and then back-pressures. Requested element is emitted downstream if there is demand.

It can be used to implement simple time-window processing where data is aggregated for predefined amount of time and the computed aggregate is emitted once per this time. See TimeWindow

T

type of element

Linear Supertypes
SimpleLinearGraphStage[T], GraphStage[FlowShape[T, T]], GraphStageWithMaterializedValue[FlowShape[T, T], NotUsed], Graph[FlowShape[T, T], NotUsed], AnyRef, Any
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  2. By Inheritance
Inherited
  1. Pulse
  2. SimpleLinearGraphStage
  3. GraphStage
  4. GraphStageWithMaterializedValue
  5. Graph
  6. AnyRef
  7. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new Pulse(interval: FiniteDuration, initiallyOpen: Boolean = false)

    interval

    pulse period

    initiallyOpen

    if true - emits the first available element before pulsing

Type Members

  1. type Shape = FlowShape[T, T]
    Definition Classes
    Graph

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def addAttributes(attr: Attributes): Graph[FlowShape[T, T], NotUsed]
    Definition Classes
    Graph
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def async(dispatcher: String, inputBufferSize: Int): Graph[FlowShape[T, T], NotUsed]
    Definition Classes
    Graph
  7. def async(dispatcher: String): Graph[FlowShape[T, T], NotUsed]
    Definition Classes
    Graph
  8. def async: Graph[FlowShape[T, T], NotUsed]
    Definition Classes
    Graph
  9. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  10. def createLogic(inheritedAttributes: Attributes): GraphStageLogic
    Definition Classes
    Pulse → GraphStage
  11. final def createLogicAndMaterializedValue(inheritedAttributes: Attributes): (GraphStageLogic, NotUsed)
    Definition Classes
    GraphStage → GraphStageWithMaterializedValue
  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  14. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  15. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  16. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  17. val in: Inlet[T]
    Definition Classes
    SimpleLinearGraphStage
  18. def initialAttributes: Attributes
    Attributes
    protected
    Definition Classes
    GraphStageWithMaterializedValue
  19. val initiallyOpen: Boolean
  20. val interval: FiniteDuration
  21. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  22. def named(name: String): Graph[FlowShape[T, T], NotUsed]
    Definition Classes
    Graph
  23. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  24. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  25. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  26. val out: Outlet[T]
    Definition Classes
    SimpleLinearGraphStage
  27. val shape: FlowShape[T, T]
    Definition Classes
    SimpleLinearGraphStage → Graph
  28. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  29. def toString(): String
    Definition Classes
    Pulse → AnyRef → Any
  30. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  31. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  32. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  33. final def withAttributes(attr: Attributes): Graph[FlowShape[T, T], NotUsed]
    Definition Classes
    GraphStageWithMaterializedValue → Graph

Inherited from SimpleLinearGraphStage[T]

Inherited from GraphStage[FlowShape[T, T]]

Inherited from GraphStageWithMaterializedValue[FlowShape[T, T], NotUsed]

Inherited from Graph[FlowShape[T, T], NotUsed]

Inherited from AnyRef

Inherited from Any

Ungrouped