examples/typescript/http-server-pool/fastify-cluster/src/main.ts

   1 import { dirname, extname, join } from 'node:path'
   2 import { fileURLToPath } from 'node:url'
   3 import { FixedClusterPool, availableParallelism } from 'poolifier'
   4 import type { WorkerData, WorkerResponse } from './types.js'
   5
   6 const workerFile = join(
   7   dirname(fileURLToPath(import.meta.url)),
   8   `worker${extname(fileURLToPath(import.meta.url))}`
   9 )
  10
  11 const pool = new FixedClusterPool<WorkerData, WorkerResponse>(
  12   availableParallelism(),
  13   workerFile,
  14   {
  15     onlineHandler: () => {
  16       pool
  17         .execute({ port: 8080 })
  18         .then(response => {
  19           if (response.status) {
  20             console.info(
  21               // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
  22               `Fastify is listening on worker on port ${response.port}`
  23             )
  24           } else {
  25             console.error('Fastify failed to start on worker:', response.error)
  26           }
  27           return null
  28         })
  29         .catch(error => {
  30           console.error(error)
  31         })
  32     },
  33     errorHandler: (e: Error) => {
  34       console.error(e)
  35     }
  36   }
  37 )