Packages

  • package root
    Definition Classes
    root
  • package org
    Definition Classes
    root
  • package apache
    Definition Classes
    org
  • package pekko
    Definition Classes
    apache
  • package stream
    Definition Classes
    pekko
  • package scaladsl

    Scala API: The flow DSL allows the formulation of stream transformations based on some input.

    Scala API: The flow DSL allows the formulation of stream transformations based on some input. The starting point is called Source and can be a collection, an iterator, a block of code which is evaluated repeatedly or a org.reactivestreams.Publisher. A flow with an attached input and open output is also a Source.

    A flow may also be defined without an attached input or output and that is then a Flow. The Flow can be connected to the Source later by using Source#via with the flow as argument, and it remains a Source.

    Transformations can be appended to Source and Flow with the operations defined in FlowOps. Each DSL element produces a new flow that can be further transformed, building up a description of the complete transformation pipeline.

    The termination point of a flow is called Sink and can for example be a Future or org.reactivestreams.Subscriber. A flow with an attached output and open input is also a Sink.

    If a flow has both an attached input and an attached output it becomes a RunnableGraph. In order to execute this pipeline the flow must be materialized by calling RunnableGraph#run on it.

    You can create your Source, Flow and Sink in any order and then wire them together before they are materialized by connecting them using Flow#via and Flow#to, or connecting them into a GraphDSL with fan-in and fan-out elements.

    See Reactive Streams for details on org.reactivestreams.Publisher and org.reactivestreams.Subscriber.

    It should be noted that the streams modeled by this library are “hot”, meaning that they asynchronously flow through a series of processors without detailed control by the user. In particular it is not predictable how many elements a given transformation step might buffer before handing elements downstream, which means that transformation functions may be invoked more often than for corresponding transformations on strict collections like List. *An important consequence* is that elements that were produced into a stream may be discarded by later processors, e.g. when using the #take operator.

    By default every operation is executed within its own org.apache.pekko.actor.Actor to enable full pipelining of the chained set of computations. This behavior is determined by the org.apache.pekko.stream.Materializer which is required by those methods that materialize the Flow into a series of org.reactivestreams.Processor instances. The returned reactive stream is fully started and active.

    Definition Classes
    stream
  • object MergeHub

    A MergeHub is a special streaming hub that is able to collect streamed elements from a dynamic set of producers.

    A MergeHub is a special streaming hub that is able to collect streamed elements from a dynamic set of producers. It consists of two parts, a Source and a Sink. The Source streams the element to a consumer from its merged inputs. Once the consumer has been materialized, the Source returns a materialized value which is the corresponding Sink. This Sink can then be materialized arbitrary many times, where each of the new materializations will feed its consumed elements to the original Source.

    Definition Classes
    scaladsl
  • DrainingControl
  • ProducerFailed

final class ProducerFailed extends RuntimeException

Source
Hub.scala
Linear Supertypes
RuntimeException, Exception, Throwable, Serializable, AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. ProducerFailed
  2. RuntimeException
  3. Exception
  4. Throwable
  5. Serializable
  6. AnyRef
  7. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new ProducerFailed(msg: String, cause: Throwable)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from ProducerFailed toany2stringadd[ProducerFailed] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (ProducerFailed, B)
    Implicit
    This member is added by an implicit conversion from ProducerFailed toArrowAssoc[ProducerFailed] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def addSuppressed(arg0: Throwable): Unit
    Definition Classes
    Throwable
  7. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  8. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
  9. def ensuring(cond: (ProducerFailed) => Boolean, msg: => Any): ProducerFailed
    Implicit
    This member is added by an implicit conversion from ProducerFailed toEnsuring[ProducerFailed] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: (ProducerFailed) => Boolean): ProducerFailed
    Implicit
    This member is added by an implicit conversion from ProducerFailed toEnsuring[ProducerFailed] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean, msg: => Any): ProducerFailed
    Implicit
    This member is added by an implicit conversion from ProducerFailed toEnsuring[ProducerFailed] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: Boolean): ProducerFailed
    Implicit
    This member is added by an implicit conversion from ProducerFailed toEnsuring[ProducerFailed] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  15. def fillInStackTrace(): Throwable
    Definition Classes
    Throwable
  16. def getCause(): Throwable
    Definition Classes
    Throwable
  17. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  18. def getLocalizedMessage(): String
    Definition Classes
    Throwable
  19. def getMessage(): String
    Definition Classes
    Throwable
  20. def getStackTrace(): Array[StackTraceElement]
    Definition Classes
    Throwable
  21. final def getSuppressed(): Array[Throwable]
    Definition Classes
    Throwable
  22. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  23. def initCause(arg0: Throwable): Throwable
    Definition Classes
    Throwable
  24. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  25. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  26. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  27. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  28. def printStackTrace(arg0: PrintWriter): Unit
    Definition Classes
    Throwable
  29. def printStackTrace(arg0: PrintStream): Unit
    Definition Classes
    Throwable
  30. def printStackTrace(): Unit
    Definition Classes
    Throwable
  31. def setStackTrace(arg0: Array[StackTraceElement]): Unit
    Definition Classes
    Throwable
  32. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  33. def toString(): String
    Definition Classes
    Throwable → AnyRef → Any
  34. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  35. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  36. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

  2. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from ProducerFailed toStringFormat[ProducerFailed] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  3. def →[B](y: B): (ProducerFailed, B)
    Implicit
    This member is added by an implicit conversion from ProducerFailed toArrowAssoc[ProducerFailed] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from RuntimeException

Inherited from Exception

Inherited from Throwable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromProducerFailed to any2stringadd[ProducerFailed]

Inherited by implicit conversion StringFormat fromProducerFailed to StringFormat[ProducerFailed]

Inherited by implicit conversion Ensuring fromProducerFailed to Ensuring[ProducerFailed]

Inherited by implicit conversion ArrowAssoc fromProducerFailed to ArrowAssoc[ProducerFailed]

Ungrouped