class ChronicleQueueAtLeastOnce[T] extends ChronicleQueueBase[T, Event[T]]

Persists all incoming upstream element to a memory mapped queue before publishing it to downstream consumer.

Emits when one of the inputs has an element available

Does not Backpressure upstream when downstream backpressures, instead buffers the stream element to memory mapped queue

Completes when upstream completes

Cancels when downstream cancels

A commit guarantee can be ensured to avoid data lost while consuming stream elements by adding a commit stage after downstream consumer.

Linear Supertypes
ChronicleQueueBase[T, Event[T]], GraphStage[FlowShape[T, Event[T]]], GraphStageWithMaterializedValue[FlowShape[T, Event[T]], NotUsed], Graph[FlowShape[T, Event[T]], NotUsed], AnyRef, Any
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Inherited
  1. ChronicleQueueAtLeastOnce
  2. ChronicleQueueBase
  3. GraphStage
  4. GraphStageWithMaterializedValue
  5. Graph
  6. AnyRef
  7. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new ChronicleQueueAtLeastOnce(persistDir: File)(implicit serializer: QueueSerializer[T], system: ActorSystem)
  2. new ChronicleQueueAtLeastOnce(config: Config)(implicit serializer: QueueSerializer[T], system: ActorSystem)
  3. new ChronicleQueueAtLeastOnce(queue: PersistentQueue[T])(implicit serializer: QueueSerializer[T], system: ActorSystem)

Type Members

  1. type Shape = FlowShape[T, Event[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, Event[T]], NotUsed]
    Definition Classes
    Graph
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def async(dispatcher: String, inputBufferSize: Int): Graph[FlowShape[T, Event[T]], NotUsed]
    Definition Classes
    Graph
  7. def async(dispatcher: String): Graph[FlowShape[T, Event[T]], NotUsed]
    Definition Classes
    Graph
  8. def async: Graph[FlowShape[T, Event[T]], NotUsed]
    Definition Classes
    Graph
  9. def autoCommit(index: Long): Unit
    Attributes
    protected
    Definition Classes
    ChronicleQueueBase
  10. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  11. def commit[U]: Flow[Event[U], Event[U], NotUsed]
  12. def createLogic(inheritedAttributes: Attributes): GraphStageLogic
    Definition Classes
    ChronicleQueueBase → GraphStage
  13. final def createLogicAndMaterializedValue(inheritedAttributes: Attributes): (GraphStageLogic, NotUsed)
    Definition Classes
    GraphStage → GraphStageWithMaterializedValue
  14. val defaultOutputPort: Int
    Definition Classes
    ChronicleQueueBase
  15. def elementOut(e: Event[T]): Event[T]
    Attributes
    protected
    Definition Classes
    ChronicleQueueAtLeastOnce → ChronicleQueueBase
  16. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  17. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  18. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  19. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  20. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  21. def initialAttributes: Attributes
    Attributes
    protected
    Definition Classes
    GraphStageWithMaterializedValue
  22. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  23. def named(name: String): Graph[FlowShape[T, Event[T]], NotUsed]
    Definition Classes
    Graph
  24. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  25. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  26. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  27. val queueCloserActor: ActorRef
    Attributes
    protected
    Definition Classes
    ChronicleQueueBase
  28. val shape: FlowShape[T, Event[T]]
    Definition Classes
    ChronicleQueueBase → Graph
  29. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  30. def toString(): String
    Definition Classes
    AnyRef → Any
  31. var upstreamFailed: Boolean
    Attributes
    protected
    Definition Classes
    ChronicleQueueBase
  32. var upstreamFinished: Boolean
    Attributes
    protected
    Definition Classes
    ChronicleQueueBase
  33. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  34. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  35. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  36. final def withAttributes(attr: Attributes): Graph[FlowShape[T, Event[T]], NotUsed]
    Definition Classes
    GraphStageWithMaterializedValue → Graph
  37. def withOnCommitCallback(onCommitCallback: () ⇒ Unit): ChronicleQueueAtLeastOnce[T]
  38. def withOnPushCallback(onPushCallback: () ⇒ Unit): ChronicleQueueAtLeastOnce[T]

Inherited from ChronicleQueueBase[T, Event[T]]

Inherited from GraphStage[FlowShape[T, Event[T]]]

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

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

Inherited from AnyRef

Inherited from Any

Ungrouped