object PekkoUtil extends HasLoggerName

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Type Members

  1. class CombinedKillSwitch extends KillSwitch

    Combines two kill switches into one

  2. trait RetrySourcePolicy[S, -A] extends AnyRef

    Defines the policy when restartSource should restart the source, and the state from which the source should be restarted from.

  3. final case class WithKillSwitch[+A](value: A)(killSwitch: KillSwitch) extends Product with Serializable

    Container class for adding a org.apache.pekko.stream.KillSwitch to a single value.

    Container class for adding a org.apache.pekko.stream.KillSwitch to a single value. Two containers are equal if their contained values are equal.

    (Equality ignores the org.apache.pekko.stream.KillSwitches because it is usually not very meaningful. The org.apache.pekko.stream.KillSwitch is therefore in the second argument list.)

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. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
  6. def createActorSystem(namePrefix: String)(implicit ec: ExecutionContext): ActorSystem

    Create an Actor system using the existing execution context ec

  7. def createExecutionSequencerFactory(namePrefix: String, logger: Logger)(implicit actorSystem: ActorSystem): ExecutionSequencerFactory

    Create a new execution sequencer factory (mainly used to create a ledger client) with the existing actor system actorSystem

  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  10. implicit def errorLoggingContextFromNamedLoggingContext(implicit loggingContext: NamedLoggingContext): ErrorLoggingContext

    Convert a com.digitalasset.canton.logging.NamedLoggingContext into an com.digitalasset.canton.logging.ErrorLoggingContext to fix the logger name to the current class name.

    Convert a com.digitalasset.canton.logging.NamedLoggingContext into an com.digitalasset.canton.logging.ErrorLoggingContext to fix the logger name to the current class name.

    Attributes
    protected
    Definition Classes
    HasLoggerName
  11. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
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    Annotations
    @native() @HotSpotIntrinsicCandidate()
  12. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  13. def injectKillSwitch[A, Mat](graph: FlowOpsMat[A, Mat])(killSwitch: (Mat) => KillSwitch): ReprMat[WithKillSwitch[A], Mat]
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. implicit def loggerNameFromThisClass: LoggerNameFromClass
    Attributes
    protected
    Definition Classes
    HasLoggerName
  16. def mapAsyncAndDrainUS[A, Mat, B](graph: FlowOps[A, Mat], parallelism: Int)(f: (A) => FutureUnlessShutdown[B])(implicit loggingContext: NamedLoggingContext): Repr[B]

    Version of mapAsyncUS that discards the com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdowns.

    Version of mapAsyncUS that discards the com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdowns.

    Completes when upstream completes and all futures have been completed and all elements have been emitted.

  17. def mapAsyncUS[A, Mat, B](graph: FlowOps[A, Mat], parallelism: Int)(f: (A) => FutureUnlessShutdown[B])(implicit loggingContext: NamedLoggingContext): Repr[UnlessShutdown[B]]

    Version of org.apache.pekko.stream.scaladsl.FlowOps.mapAsync for a com.digitalasset.canton.lifecycle.FutureUnlessShutdown.

    Version of org.apache.pekko.stream.scaladsl.FlowOps.mapAsync for a com.digitalasset.canton.lifecycle.FutureUnlessShutdown. If f returns com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdown on one element of source, then the returned source returns com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdown for all subsequent elements as well.

    If parallelism is one, ensures that f is called sequentially for each element of source and that f is not invoked on later stream elements if f returns com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdown for an earlier element. If parellelism is greater than one, f may be invoked on later stream elements even though an earlier invocation results in f returning com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdown.

    Emits when the Future returned by the provided function finishes for the next element in sequence

    Backpressures when the number of futures reaches the configured parallelism and the downstream backpressures or the first future is not completed

    Completes when upstream completes and all futures have been completed and all elements have been emitted, including those for which the future did not run due to earlier com.digitalasset.canton.lifecycle.UnlessShutdown.AbortedDueToShutdowns.

    Cancels when downstream cancels

    parallelism

    The parallelism level. Must be at least 1.

    Exceptions thrown

    java.lang.IllegalArgumentException if parallelism is not positive.

  18. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  19. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  20. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  21. def remember[A, Mat](graph: FlowOps[A, Mat], memory: NonNegativeInt): Repr[NonEmpty[Seq[A]]]

    Remembers the last memory many elements that have already been emitted previously.

    Remembers the last memory many elements that have already been emitted previously. Passes those remembered elements downstream with each new element. The current element is the com.daml.nonempty.NonEmptyCollInstances.NEPreservingOps.last1 of the sequence.

    remember differs from org.apache.pekko.stream.scaladsl.FlowOps.sliding in that remember emits elements immediately when the given source emits, whereas org.apache.pekko.stream.scaladsl.FlowOps.sliding only after the source has emitted enough elements to fill the window.

  22. def restartSource[S, A](name: String, initial: S, mkSource: (S) => Source[A, (KillSwitch, Future[Done])], policy: RetrySourcePolicy[S, A])(implicit arg0: Pretty[S], loggingContext: NamedLoggingContext, materializer: Materializer): Source[WithKillSwitch[A], (KillSwitch, Future[Done])]

    Creates a source from mkSource from the initial state.

    Creates a source from mkSource from the initial state. Whenever this source terminates, policy determines whether another source shall be constructed (after a given delay) from a possibly new state. The returned source concatenates the output of all the constructed sources in order. At most one constructed source is active at any given point in time.

    Failures in the constructed sources are passed to the policy, but do not make it downstream. The policy is responsible for properly logging these errors if necessary.

    returns

    The concatenation of all constructed sources. This source is NOT a blueprint and MUST therefore be materialized at most once. Its materialized value provides a kill switch to stop retrying. Only the org.apache.pekko.stream.KillSwitch.shutdown method should be used; The switch does not short-circuit the already constructed sources though. synchronization may not work correctly with org.apache.pekko.stream.KillSwitch.abort. Downstream should not cancel; use the kill switch instead. The materialized scala.concurrent.Future can be used to synchronize on the computations for restarts: if the source is stopped with the kill switch, the future completes after the computations have finished.

  23. def runSupervised[T](reporter: (Throwable) => Unit, graph: RunnableGraph[T], debugLogging: Boolean = false)(implicit mat: Materializer): T

    Utility function to run the graph supervised and stop on an unhandled exception.

    Utility function to run the graph supervised and stop on an unhandled exception.

    By default, an Pekko flow will discard exceptions. Use this method to avoid discarding exceptions.

  24. def statefulMapAsync[Out, Mat, S, T](graph: FlowOps[Out, Mat], initial: S)(f: (S, Out) => Future[(S, T)])(implicit loggingContext: NamedLoggingContext): Repr[T]

    A version of org.apache.pekko.stream.scaladsl.FlowOps.mapAsync that additionally allows to pass state of type S between every subsequent element.

    A version of org.apache.pekko.stream.scaladsl.FlowOps.mapAsync that additionally allows to pass state of type S between every subsequent element. Unlike org.apache.pekko.stream.scaladsl.FlowOps.statefulMapConcat, the state is passed explicitly. Must not be run with supervision strategies org.apache.pekko.stream.Supervision.Restart nor org.apache.pekko.stream.Supervision.Resume

  25. def statefulMapAsyncUS[Out, Mat, S, T](graph: FlowOps[Out, Mat], initial: S)(f: (S, Out) => FutureUnlessShutdown[(S, T)])(implicit loggingContext: NamedLoggingContext): Repr[UnlessShutdown[T]]

    Combines mapAsyncUS with statefulMapAsync.

  26. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  27. def takeUntilThenDrain[A, Mat](graph: FlowOps[WithKillSwitch[A], Mat], condition: (A) => Boolean): Repr[WithKillSwitch[A]]

    Passes through all elements of the source until and including the first element that satisfies the condition.

    Passes through all elements of the source until and including the first element that satisfies the condition. Thereafter pulls the kill switch of the first such element and drops all remaining elements of the source.

    Emits when upstream emits and all previously emitted elements do not meet the condition.

    Backpressures when downstream backpressures

    Completes when upstream completes

    Cancels when downstream cancels

  28. def toString(): String
    Definition Classes
    AnyRef → Any
  29. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  30. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  31. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  32. def withUniqueKillSwitch[A, Mat, Mat2](graph: FlowOpsMat[A, Mat])(mat: (Mat, UniqueKillSwitch) => Mat2): ReprMat[WithKillSwitch[A], Mat2]

    Adds a org.apache.pekko.stream.KillSwitches.single into the stream after the given source and injects the created kill switch into the stream

  33. object RetrySourcePolicy
  34. object WithKillSwitch extends Serializable
  35. object syntax

Deprecated Value Members

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

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