1 import { type Worker
, isMainThread
} from
'worker_threads';
3 import type { PoolOptions
} from
'poolifier';
5 import type WorkerAbstract from
'./WorkerAbstract';
6 import WorkerConstants from
'./WorkerConstants';
7 import WorkerDynamicPool from
'./WorkerDynamicPool';
8 import WorkerSet from
'./WorkerSet';
9 import WorkerStaticPool from
'./WorkerStaticPool';
10 import { type WorkerData
, type WorkerOptions
, WorkerProcessType
} from
'../types/Worker';
12 export default class WorkerFactory
{
13 private constructor() {
14 // This is intentional
17 public static getWorkerImplementation
<T
extends WorkerData
>(
19 workerProcessType
: WorkerProcessType
,
20 workerOptions
?: WorkerOptions
21 ): WorkerAbstract
<T
> | null {
23 throw new Error('Cannot get a worker implementation outside the main thread');
25 workerOptions
= workerOptions
?? ({} as WorkerOptions
);
26 workerOptions
.workerStartDelay
=
27 workerOptions
?.workerStartDelay
?? WorkerConstants
.DEFAULT_WORKER_START_DELAY
;
28 workerOptions
.elementStartDelay
=
29 workerOptions
?.elementStartDelay
?? WorkerConstants
.DEFAULT_ELEMENT_START_DELAY
;
30 workerOptions
.poolOptions
= workerOptions
?.poolOptions
?? ({} as PoolOptions
<Worker
>);
31 workerOptions
?.messageHandler
&&
32 (workerOptions
.poolOptions
.messageHandler
= workerOptions
.messageHandler
);
33 let workerImplementation
: WorkerAbstract
<T
> = null;
34 switch (workerProcessType
) {
35 case WorkerProcessType
.WORKER_SET
:
36 workerOptions
.elementsPerWorker
=
37 workerOptions
?.elementsPerWorker
?? WorkerConstants
.DEFAULT_ELEMENTS_PER_WORKER
;
38 workerImplementation
= new WorkerSet(workerScript
, workerOptions
);
40 case WorkerProcessType
.STATIC_POOL
:
41 workerOptions
.poolMaxSize
=
42 workerOptions
?.poolMaxSize
?? WorkerConstants
.DEFAULT_POOL_MAX_SIZE
;
43 workerImplementation
= new WorkerStaticPool(workerScript
, workerOptions
);
45 case WorkerProcessType
.DYNAMIC_POOL
:
46 workerOptions
.poolMinSize
=
47 workerOptions
?.poolMinSize
?? WorkerConstants
.DEFAULT_POOL_MIN_SIZE
;
48 workerOptions
.poolMaxSize
=
49 workerOptions
?.poolMaxSize
?? WorkerConstants
.DEFAULT_POOL_MAX_SIZE
;
50 workerImplementation
= new WorkerDynamicPool(workerScript
, workerOptions
);
53 // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
54 throw new Error(`Worker implementation type '${workerProcessType}' not found`);
56 return workerImplementation
;