examples/typescript/pool.ts

   1 import { dirname, extname, join } from 'node:path'
   2 import { fileURLToPath } from 'node:url'
   3
   4 import {
   5   availableParallelism,
   6   DynamicThreadPool,
   7   FixedThreadPool
   8 } from 'poolifier'
   9
  10 import type { MyData, MyResponse } from './worker.js'
  11
  12 const workerFile = join(
  13   dirname(fileURLToPath(import.meta.url)),
  14   `worker${extname(fileURLToPath(import.meta.url))}`
  15 )
  16
  17 const fixedPool = new FixedThreadPool<MyData, MyResponse>(
  18   availableParallelism(),
  19   workerFile,
  20   {
  21     errorHandler: (e: Error) => {
  22       console.error(e)
  23     },
  24     onlineHandler: () => {
  25       console.info('Worker is online')
  26     }
  27   }
  28 )
  29
  30 await fixedPool.execute()
  31
  32 const dynamicPool = new DynamicThreadPool<MyData, MyResponse>(
  33   Math.floor(availableParallelism() / 2),
  34   availableParallelism(),
  35   workerFile,
  36   {
  37     errorHandler: (e: Error) => {
  38       console.error(e)
  39     },
  40     onlineHandler: () => {
  41       console.info('Worker is online')
  42     }
  43   }
  44 )
  45
  46 await dynamicPool.execute()
  47
  48 // eslint-disable-next-line @typescript-eslint/no-misused-promises
  49 setTimeout(async () => {
  50   await fixedPool.destroy()
  51   await dynamicPool.destroy()
  52 }, 3000)