build(deps-dev): bump @types/node

[poolifier.git] / src / utils.ts

diff --git a/src/utils.ts b/src/utils.ts
index 8e84e9474c8a91d1adceb740e5c5ff21292faa02..b38cf948e833ef41ccc7d183db0498a8e4257ed0 100644 (file)
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,14 +1,15 @@
 import * as os from 'node:os'
-import { getRandomValues } from 'node:crypto'
+import { getRandomValues, randomInt } from 'node:crypto'
 import { Worker as ClusterWorker } from 'node:cluster'
 import { Worker as ThreadWorker } from 'node:worker_threads'
 import { cpus } from 'node:os'
 import type {
-  InternalWorkerChoiceStrategyOptions,
-  MeasurementStatisticsRequirements
-} from './pools/selection-strategies/selection-strategies-types'
-import type { KillBehavior } from './worker/worker-options'
-import { type IWorker, type WorkerType, WorkerTypes } from './pools/worker'
+  MeasurementStatisticsRequirements,
+  WorkerChoiceStrategyOptions
+} from './pools/selection-strategies/selection-strategies-types.js'
+import type { KillBehavior } from './worker/worker-options.js'
+import { type IWorker, type WorkerType, WorkerTypes } from './pools/worker.js'
+import type { IPool } from './pools/pool.js'
 
 /**
  * Default task name.
@@ -22,23 +23,6 @@ export const EMPTY_FUNCTION: () => void = Object.freeze(() => {
   /* Intentionally empty */
 })
 
-/**
- * Gets default worker choice strategy options.
- *
- * @param retries - The number of worker choice retries.
- * @returns The default worker choice strategy options.
- */
-const getDefaultInternalWorkerChoiceStrategyOptions = (
-  retries: number
-): InternalWorkerChoiceStrategyOptions => {
-  return {
-    retries,
-    runTime: { median: false },
-    waitTime: { median: false },
-    elu: { median: false }
-  }
-}
-
 /**
  * Default measurement statistics requirements.
  */
@@ -194,7 +178,7 @@ export const round = (num: number, scale = 2): number => {
 export const isPlainObject = (obj: unknown): boolean =>
   typeof obj === 'object' &&
   obj !== null &&
-  obj?.constructor === Object &&
+  obj.constructor === Object &&
   Object.prototype.toString.call(obj) === '[object Object]'
 
 /**
@@ -273,6 +257,7 @@ export const once = <T, A extends any[], R>(
 ): ((...args: A) => R) => {
   let result: R
   return (...args: A) => {
+    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
     if (fn != null) {
       result = fn.apply<T, A, R>(context, args)
       ;(fn as unknown as undefined) = (context as unknown as undefined) =
@@ -282,30 +267,49 @@ export const once = <T, A extends any[], R>(
   }
 }
 
-const clone = <T extends object>(object: T): T => {
-  return JSON.parse(JSON.stringify(object)) as T
+export const getWorkerChoiceStrategyRetries = <
+  Worker extends IWorker,
+  Data,
+  Response
+>(
+    pool: IPool<Worker, Data, Response>,
+    opts?: WorkerChoiceStrategyOptions
+  ): number => {
+  return (
+    pool.info.maxSize +
+    Object.keys(opts?.weights ?? getDefaultWeights(pool.info.maxSize)).length
+  )
 }
 
-export const buildInternalWorkerChoiceStrategyOptions = (
-  poolMaxSize: number,
-  opts?: InternalWorkerChoiceStrategyOptions
-): InternalWorkerChoiceStrategyOptions => {
+const clone = <T>(object: T): T => {
+  return structuredClone<T>(object)
+}
+
+export const buildWorkerChoiceStrategyOptions = <
+  Worker extends IWorker,
+  Data,
+  Response
+>(
+    pool: IPool<Worker, Data, Response>,
+    opts?: WorkerChoiceStrategyOptions
+  ): WorkerChoiceStrategyOptions => {
   opts = clone(opts ?? {})
-  if (opts?.weights == null) {
-    opts.weights = getDefaultWeights(poolMaxSize)
-  }
+  opts.weights = opts.weights ?? getDefaultWeights(pool.info.maxSize)
   return {
-    ...getDefaultInternalWorkerChoiceStrategyOptions(
-      poolMaxSize + Object.keys(opts.weights).length
-    ),
+    ...{
+      runTime: { median: false },
+      waitTime: { median: false },
+      elu: { median: false }
+    },
     ...opts
   }
 }
 
 const getDefaultWeights = (
   poolMaxSize: number,
-  defaultWorkerWeight: number = getDefaultWorkerWeight()
+  defaultWorkerWeight?: number
 ): Record<number, number> => {
+  defaultWorkerWeight = defaultWorkerWeight ?? getDefaultWorkerWeight()
   const weights: Record<number, number> = {}
   for (let workerNodeKey = 0; workerNodeKey < poolMaxSize; workerNodeKey++) {
     weights[workerNodeKey] = defaultWorkerWeight
@@ -314,8 +318,16 @@ const getDefaultWeights = (
 }
 
 const getDefaultWorkerWeight = (): number => {
+  const cpuSpeed = randomInt(500, 2500)
   let cpusCycleTimeWeight = 0
   for (const cpu of cpus()) {
+    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+    if (cpu.speed == null || cpu.speed === 0) {
+      cpu.speed =
+        // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+        cpus().find(cpu => cpu.speed != null && cpu.speed !== 0)?.speed ??
+        cpuSpeed
+    }
     // CPU estimated cycle time
     const numberOfDigits = cpu.speed.toString().length - 1
     const cpuCycleTime = 1 / (cpu.speed / Math.pow(10, numberOfDigits))