Class WorkerChoiceStrategiesContext<Worker, Data, Response>

constructor

• new WorkerChoiceStrategiesContext<Worker, Data, Response>(pool, workerChoiceStrategies?, opts?): WorkerChoiceStrategiesContext<Worker, Data, Response>

• Worker choice strategies context constructor.

  Type Parameters

  • Worker extends IWorker
  • Data = unknown
  • Response = unknown

  Parameters

  • pool: IPool<Worker, Data, Response>

    The pool instance.
  • workerChoiceStrategies: (
        | "ROUND_ROBIN"
        | "LEAST_USED"
        | "LEAST_BUSY"
        | "LEAST_ELU"
        | "FAIR_SHARE"
        | "WEIGHTED_ROUND_ROBIN"
        | "INTERLEAVED_WEIGHTED_ROUND_ROBIN")[] = ...

    The worker choice strategies.
  • Optionalopts: WorkerChoiceStrategyOptions

    The worker choice strategy options.

  Returns WorkerChoiceStrategiesContext<Worker, Data, Response>

  Default Value

  [WorkerChoiceStrategies.ROUND_ROBIN]
  Copy

retriesCount

execute

• execute(workerChoiceStrategy?): number

• Executes the given worker choice strategy in the context algorithm.

  Parameters

  • workerChoiceStrategy:
        | "ROUND_ROBIN"
        | "LEAST_USED"
        | "LEAST_BUSY"
        | "LEAST_ELU"
        | "FAIR_SHARE"
        | "WEIGHTED_ROUND_ROBIN"
        | "INTERLEAVED_WEIGHTED_ROUND_ROBIN" = ...

    The worker choice strategy algorithm to execute.

  Returns number

  The key of the worker node.

  Default Value

  this.defaultWorkerChoiceStrategy
  Copy

  Throws

  https://nodejs.org/api/errors.html#class-error If after computed retries the worker node key is null or undefined.

getPolicy

• getPolicy(): StrategyPolicy

• Gets the active worker choice strategies in the context policy.

  Returns StrategyPolicy

  The strategies policy.

getTaskStatisticsRequirements

• getTaskStatisticsRequirements(): TaskStatisticsRequirements

• Gets the active worker choice strategies in the context task statistics requirements.

  Returns TaskStatisticsRequirements

  The strategies task statistics requirements.

remove

• remove(workerNodeKey): boolean

• Removes the worker node key from the active worker choice strategies in the context.

  Parameters

  • workerNodeKey: number

    The worker node key.

  Returns boolean

  true if the removal is successful, false otherwise.

setDefaultWorkerChoiceStrategy

• setDefaultWorkerChoiceStrategy(workerChoiceStrategy, opts?): void

• Sets the default worker choice strategy to use in the context.

  Parameters

  • workerChoiceStrategy:
        | "ROUND_ROBIN"
        | "LEAST_USED"
        | "LEAST_BUSY"
        | "LEAST_ELU"
        | "FAIR_SHARE"
        | "WEIGHTED_ROUND_ROBIN"
        | "INTERLEAVED_WEIGHTED_ROUND_ROBIN"

    The default worker choice strategy to set.
  • Optionalopts: WorkerChoiceStrategyOptions

    The worker choice strategy options.

  Returns void

setOptions

• setOptions(opts): void

• Sets the active worker choice strategies in the context options.

  Parameters

  • opts: undefined | WorkerChoiceStrategyOptions

    The worker choice strategy options.

  Returns void

syncWorkerChoiceStrategies

• syncWorkerChoiceStrategies(workerChoiceStrategies, opts?): void

• Synchronizes the active worker choice strategies in the context with the given worker choice strategies.

  Parameters

  • workerChoiceStrategies: Set<
        | "ROUND_ROBIN"
        | "LEAST_USED"
        | "LEAST_BUSY"
        | "LEAST_ELU"
        | "FAIR_SHARE"
        | "WEIGHTED_ROUND_ROBIN"
        | "INTERLEAVED_WEIGHTED_ROUND_ROBIN">

    The worker choice strategies to synchronize.
  • Optionalopts: WorkerChoiceStrategyOptions

    The worker choice strategy options.

  Returns void

update

• update(workerNodeKey): boolean

• Updates the worker node key in the active worker choice strategies in the context internals.

  Parameters

  • workerNodeKey: number

    The worker node key.

  Returns boolean

  true if the update is successful, false otherwise.