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cluster-worker.ts
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cluster-worker.ts
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import type { Worker } from 'cluster'
import cluster from 'cluster'
import type { MessageValue } from '../utility-types'
import { AbstractWorker } from './abstract-worker'
import type { WorkerOptions } from './worker-options'
/**
* A cluster worker used by a poolifier `ClusterPool`.
*
* When this worker is inactive for more than the given `maxInactiveTime`,
* it will send a termination request to its main worker.
*
* If you use a `DynamicClusterPool` the extra workers that were created will be terminated,
* but the minimum number of workers will be guaranteed.
*
* @template DataType of data this worker receives from pool's execution. This can only be serializable data.
* @template ResponseType of response the worker sends back to the main worker. This can only be serializable data.
* @author [Christopher Quadflieg](https://github.com/Shinigami92)
* @since 2.0.0
*/
export class ClusterWorker<
Data = unknown,
Response = unknown
> extends AbstractWorker<Worker, Data, Response> {
/**
* Constructs a new poolifier cluster worker.
*
* @param fn Function processed by the worker when the pool's `execution` function is invoked.
* @param opts Options for the worker.
*/
public constructor (fn: (data: Data) => Response, opts: WorkerOptions = {}) {
super(
'worker-cluster-pool:poolifier',
cluster.isPrimary,
fn,
cluster.worker,
opts
)
}
/** @inheritDoc */
protected sendToMainWorker (message: MessageValue<Response>): void {
this.getMainWorker().send(message)
}
/** @inheritDoc */
protected handleError (e: Error | string): string {
return e instanceof Error ? e.message : e
}
}