akka.cluster

VectorClock

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( 1L )
Linear Supertypes
Serializable, Serializable, Product, Equals, AnyRef, Any
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Inherited
  1. VectorClock
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. AnyRef
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Visibility
  1. Public
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Instance Constructors

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

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. 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.

  5. def <(that: VectorClock): Boolean

    Returns true if this is before that else false.

    Returns true if this is before that else false.

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

    Returns true if this and that are concurrent else false.

    Returns true if this and that are concurrent else false.

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

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

  8. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  9. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  10. def >(that: VectorClock): Boolean

    Returns true if this is after that else false.

    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
    @IntrinsicCandidate() @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. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  15. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate()

  16. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  17. def merge(that: VectorClock): VectorClock

    Merges this VectorClock with another VectorClock.

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

  18. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  19. final def notify(): Unit

    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate()

  20. final def notifyAll(): Unit

    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate()

  21. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  22. def toString(): String

    Definition Classes
    VectorClock → AnyRef → Any

  23. val versions: TreeMap[Node, Long]

  24. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  25. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  26. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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