1 import type { AbstractPoolWorker
} from
'../abstract-pool-worker'
2 import type { IPoolInternal
} from
'../pool-internal'
3 import { AbstractWorkerChoiceStrategy
} from
'./abstract-worker-choice-strategy'
7 } from
'./selection-strategies-types'
8 import { WorkerChoiceStrategies
} from
'./selection-strategies-types'
9 import { SelectionStrategiesUtils
} from
'./selection-strategies-utils'
12 * Dynamically choose a worker.
14 * @template Worker Type of worker which manages the strategy.
15 * @template Data Type of data sent to the worker. This can only be serializable data.
16 * @template Response Type of response of execution. This can only be serializable data.
18 export class DynamicPoolWorkerChoiceStrategy
<
19 Worker
extends AbstractPoolWorker
,
22 > extends AbstractWorkerChoiceStrategy
<Worker
, Data
, Response
> {
23 private workerChoiceStrategy
: IWorkerChoiceStrategy
<Worker
>
26 * Constructs a worker choice strategy for dynamical pool.
28 * @param pool The pool instance.
29 * @param createDynamicallyWorkerCallback The worker creation callback for dynamic pool.
30 * @param workerChoiceStrategy The worker choice strategy when the pull is busy.
33 pool
: IPoolInternal
<Worker
, Data
, Response
>,
34 private createDynamicallyWorkerCallback
: () => Worker
,
35 workerChoiceStrategy
: WorkerChoiceStrategy
= WorkerChoiceStrategies
.ROUND_ROBIN
38 this.workerChoiceStrategy
= SelectionStrategiesUtils
.getWorkerChoiceStrategy(
45 public choose (): Worker
{
46 const freeWorker
= this.pool
.findFreeWorker()
52 return this.workerChoiceStrategy
.choose()
55 // All workers are busy, create a new worker
56 return this.createDynamicallyWorkerCallback()