Packages

  • package root
    Definition Classes
    root
  • package akka
    Definition Classes
    root
  • package actor
    Definition Classes
    akka
  • package typed
    Definition Classes
    actor
  • package pubsub
    Definition Classes
    typed
  • object Topic

    A pub sub topic is an actor that handles subscribing to a topic and publishing messages to all subscribed actors.

    A pub sub topic is an actor that handles subscribing to a topic and publishing messages to all subscribed actors.

    It is mostly useful in a clustered setting, where it is intended to be started once on every node that want to house subscribers or publish messages to the topic, but it also works in a local setting without cluster.

    In a clustered context messages are deduplicated so that there is at most one message sent to each node for each publish and if there are no subscribers on a node, no message is sent to it. Note that the list of subscribers is eventually consistent and there are no delivery guarantees built in.

    Each topic results in a akka.actor.typed.receptionist.ServiceKey in the akka.actor.typed.receptionist.Receptionist so the same scaling recommendation holds for topics, see docs: https://doc.akka.io/docs/akka/current/typed/actor-discovery.html#receptionist-scalability

    Definition Classes
    pubsub
  • Command
  • GetTopicStats
  • Publish
  • Subscribe
  • TopicStats
  • Unsubscribe

trait Command[T] extends internal.pubsub.TopicImpl.Command[T]

Not for user extension

Annotations
@DoNotInherit()
Source
Topic.scala
Linear Supertypes
internal.pubsub.TopicImpl.Command[T], AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. Command
  2. Command
  3. AnyRef
  4. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected

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 Command[T] toany2stringadd[Command[T]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (Command[T], B)
    Implicit
    This member is added by an implicit conversion from Command[T] toArrowAssoc[Command[T]] 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 asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
  8. def ensuring(cond: (Command[T]) => Boolean, msg: => Any): Command[T]
    Implicit
    This member is added by an implicit conversion from Command[T] toEnsuring[Command[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  9. def ensuring(cond: (Command[T]) => Boolean): Command[T]
    Implicit
    This member is added by an implicit conversion from Command[T] toEnsuring[Command[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: Boolean, msg: => Any): Command[T]
    Implicit
    This member is added by an implicit conversion from Command[T] toEnsuring[Command[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean): Command[T]
    Implicit
    This member is added by an implicit conversion from Command[T] toEnsuring[Command[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  14. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  15. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  16. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  17. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  18. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  19. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @HotSpotIntrinsicCandidate() @native()
  20. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  21. def toString(): String
    Definition Classes
    AnyRef → Any
  22. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  23. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  24. 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 Command[T] toStringFormat[Command[T]] 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): (Command[T], B)
    Implicit
    This member is added by an implicit conversion from Command[T] toArrowAssoc[Command[T]] 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 internal.pubsub.TopicImpl.Command[T]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromCommand[T] to any2stringadd[Command[T]]

Inherited by implicit conversion StringFormat fromCommand[T] to StringFormat[Command[T]]

Inherited by implicit conversion Ensuring fromCommand[T] to Ensuring[Command[T]]

Inherited by implicit conversion ArrowAssoc fromCommand[T] to ArrowAssoc[Command[T]]

Ungrouped