| 1 | import type { TransferListItem } from 'node:worker_threads' |
| 2 | import { DynamicThreadPool, availableParallelism } from 'poolifier' |
| 3 | import type { FastifyPluginCallback } from 'fastify' |
| 4 | import fp from 'fastify-plugin' |
| 5 | import { |
| 6 | type FastifyPoolifierOptions, |
| 7 | type WorkerData, |
| 8 | type WorkerResponse |
| 9 | } from './types.js' |
| 10 | |
| 11 | const fastifyPoolifierPlugin: FastifyPluginCallback<FastifyPoolifierOptions> = ( |
| 12 | fastify, |
| 13 | options, |
| 14 | done |
| 15 | ) => { |
| 16 | options = { |
| 17 | ...{ |
| 18 | minWorkers: 1, |
| 19 | maxWorkers: availableParallelism() |
| 20 | }, |
| 21 | ...options |
| 22 | } |
| 23 | const { workerFile, minWorkers, maxWorkers, ...poolOptions } = options |
| 24 | const pool = new DynamicThreadPool<WorkerData, WorkerResponse>( |
| 25 | minWorkers as number, |
| 26 | maxWorkers as number, |
| 27 | workerFile, |
| 28 | poolOptions |
| 29 | ) |
| 30 | if (!fastify.hasDecorator('pool')) { |
| 31 | fastify.decorate('pool', pool) |
| 32 | } |
| 33 | if (!fastify.hasDecorator('execute')) { |
| 34 | fastify.decorate( |
| 35 | 'execute', |
| 36 | async ( |
| 37 | data?: WorkerData, |
| 38 | name?: string, |
| 39 | transferList?: TransferListItem[] |
| 40 | ): Promise<WorkerResponse> => await pool.execute(data, name, transferList) |
| 41 | ) |
| 42 | } |
| 43 | done() |
| 44 | } |
| 45 | |
| 46 | export const fastifyPoolifier = fp(fastifyPoolifierPlugin, { |
| 47 | fastify: '4.x', |
| 48 | name: 'fastify-poolifier' |
| 49 | }) |