c

akka.cluster

VectorClock

final case class VectorClock(versions: TreeMap[Node, Long] = ...) extends Product with Serializable

Representation of a Vector-based clock (counting clock), inspired by Lamport logical clocks.

Reference:
   1) Leslie Lamport (1978). "Time, clocks, and the ordering of events in a distributed system". Communications of the ACM 21 (7): 558-565.
   2) Friedemann Mattern (1988). "Virtual Time and Global States of Distributed Systems". Workshop on Parallel and Distributed Algorithms: pp. 215-226

Based on code from the 'vlock' VectorClock library by Coda Hale.

Annotations
@SerialVersionUID()
Source
VectorClock.scala
Linear Supertypes
Serializable, Serializable, Product, Equals, AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. VectorClock
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. AnyRef
  7. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new VectorClock(versions: TreeMap[Node, Long] = ...)

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 VectorClock to any2stringadd[VectorClock] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (VectorClock, B)
    Implicit
    This member is added by an implicit conversion from VectorClock to ArrowAssoc[VectorClock] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. def :+(node: Node): VectorClock

    Increment the version for the node passed as argument.

    Increment the version for the node passed as argument. Returns a new VectorClock.

  6. def <(that: VectorClock): Boolean

    Returns true if this is before that else false.

  7. def <>(that: VectorClock): Boolean

    Returns true if this and that are concurrent else false.

  8. def ==(that: VectorClock): Boolean

    Returns true if this VectorClock has the same history as the 'that' VectorClock else false.

  9. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  10. def >(that: VectorClock): Boolean

    Returns true if this is after that else false.

  11. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  12. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate() @throws( ... )
  13. def compareTo(that: VectorClock): Ordering

    Compare two vector clocks.

    Compare two vector clocks. The outcome will be one of the following:

    1. Clock 1 is SAME (==)       as Clock 2 iff for all i c1(i) == c2(i)
2. Clock 1 is BEFORE (<)      Clock 2 iff for all i c1(i) <= c2(i) and there exist a j such that c1(j) < c2(j)
3. Clock 1 is AFTER (>)       Clock 2 iff for all i c1(i) >= c2(i) and there exist a j such that c1(j) > c2(j).
4. Clock 1 is CONCURRENT (<>) to Clock 2 otherwise.
  14. def ensuring(cond: (VectorClock) ⇒ Boolean, msg: ⇒ Any): VectorClock
    Implicit
    This member is added by an implicit conversion from VectorClock to Ensuring[VectorClock] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  15. def ensuring(cond: (VectorClock) ⇒ Boolean): VectorClock
    Implicit
    This member is added by an implicit conversion from VectorClock to Ensuring[VectorClock] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  16. def ensuring(cond: Boolean, msg: ⇒ Any): VectorClock
    Implicit
    This member is added by an implicit conversion from VectorClock to Ensuring[VectorClock] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  17. def ensuring(cond: Boolean): VectorClock
    Implicit
    This member is added by an implicit conversion from VectorClock to Ensuring[VectorClock] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  18. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  19. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from VectorClock to StringFormat[VectorClock] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  20. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  21. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  22. def merge(that: VectorClock): VectorClock

    Merges this VectorClock with another VectorClock.

    Merges this VectorClock with another VectorClock. E.g. merges its versioned history.

  23. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  24. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  25. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  26. def prune(removedNode: Node): VectorClock
  27. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  28. def toString(): String
    Definition Classes
    VectorClock → AnyRef → Any
  29. val versions: TreeMap[Node, Long]
  30. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  31. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  32. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. def →[B](y: B): (VectorClock, B)
    Implicit
    This member is added by an implicit conversion from VectorClock to ArrowAssoc[VectorClock] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Deprecated Value Members

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

    (Since version ) see corresponding Javadoc for more information.

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from VectorClock to any2stringadd[VectorClock]

Inherited by implicit conversion StringFormat from VectorClock to StringFormat[VectorClock]

Inherited by implicit conversion Ensuring from VectorClock to Ensuring[VectorClock]

Inherited by implicit conversion ArrowAssoc from VectorClock to ArrowAssoc[VectorClock]

Ungrouped