Router

Value Members

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

   

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2. final def ##(): Int

   

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

   

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4. final def asInstanceOf[T0]: T0

   

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5. def clone(): AnyRef

   

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6. def deficitRoundRobin[T](targets: Seq[Channel[T]], quantum: Int, cost: (T) ⇒ Int): Selector[T]

   

   Picks the next channel according to the Deficit Round Robin routing algorithm.

   Picks the next channel according to the Deficit Round Robin routing algorithm.

   This routing policy attempts to send the message to the channel that has so far received the least total cost, according to some cost function cost. The cost of an event could be its size (if the network transmission is the main concern), or the estimate on the processing time of that event (if computing bandwidth is the main concern).

   Each target channel has an associated deficit counter, which is increased by an amount called a quantum each time a channel gets selected, and decreased every time that an event is sent to it. When an event with a cost higher than the deficit counter appears, the next channel is selected.

   Note: quantum and cost should be relatively close in magnitude.

   T

   type of routed events

   targets

   sequence of target channels

   quantum

   the base cost quantum used to increase

   cost

   function from an event to its cost

   returns

   a selector

7. final def eq(arg0: AnyRef): Boolean

   

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8. def equals(arg0: Any): Boolean

   

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9. def finalize(): Unit

   

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

    

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11. def hash[T](targets: Seq[Channel[T]], hashing: (T) ⇒ Int = (x: T) => x.##): Selector[T]

    

    Consistently picks a channel using a hashing function on the event.

    Consistently picks a channel using a hashing function on the event.

    The hashing function is applied to the event, and the hash code is used to select a channel. Given that the same hash code is always returned for the same event, the same channel is always picked. This is useful when implementing, e.g. distributed hash tables.

    T

    type of the events routed

    targets

    target channels to which events are routed

    hashing

    hashing function from an event to some hash value

    returns

    the selector function

12. def hashCode(): Int

    

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13. final def isInstanceOf[T0]: Boolean

    

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

    

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15. final def notify(): Unit

    

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16. final def notifyAll(): Unit

    

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17. def random[T](targets: Seq[Channel[T]], randfun: (Int) ⇒ Int = ...): Selector[T]

    

    Picks a channel from a random distribution.

    Picks a channel from a random distribution.

    T

    type of the events routed

    targets

    target channels to which to route the events

    randfun

    randomization function, total number of channels to an index

    returns

    the selector function

18. def roundRobin[T](targets: Seq[Channel[T]]): Selector[T]

    

    Picks channels in a Round Robin manner.

    Picks channels in a Round Robin manner.

    T

    type of the events to route

    targets

    the channels to route the events to

    returns

    a selector function that chooses a channel

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

    

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20. def toString(): String

    

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21. final def wait(): Unit

    

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

    

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

    

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24. def zeroSelector[T]: Selector[T]

    

    Always returns a zero channel, which loses all the events sent to it.

    Always returns a zero channel, which loses all the events sent to it.

    T

    type of the events to route

    returns

    a selector function that drops events