src/charging-station/ChargingStationWorker.ts

   1 // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
   2
   3 import { parentPort, workerData } from 'node:worker_threads';
   4
   5 import { ThreadWorker } from 'poolifier';
   6
   7 import { ChargingStation, ChargingStationUtils } from './internal';
   8 import type { ChargingStationWorkerData } from '../types';
   9 import { Utils } from '../utils';
  10 import { WorkerConstants, type WorkerMessage, WorkerMessageEvents } from '../worker';
  11
  12 // Conditionally export ThreadWorker instance for pool usage
  13 export let threadWorker: ThreadWorker;
  14 if (ChargingStationUtils.workerPoolInUse()) {
  15   threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
  16     maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
  17     async: false,
  18   });
  19 } else {
  20   // Add message listener to start charging station from main thread
  21   addMessageListener();
  22   if (Utils.isUndefined(workerData) === false) {
  23     startChargingStation(workerData as ChargingStationWorkerData);
  24   }
  25 }
  26
  27 /**
  28  * Listen messages send by the main thread
  29  */
  30 function addMessageListener(): void {
  31   parentPort?.on('message', (message: WorkerMessage<ChargingStationWorkerData>) => {
  32     if (message.id === WorkerMessageEvents.START_WORKER_ELEMENT) {
  33       startChargingStation(message.data);
  34     }
  35   });
  36 }
  37
  38 /**
  39  * Create and start a charging station instance
  40  *
  41  * @param data - workerData
  42  */
  43 function startChargingStation(data: ChargingStationWorkerData): void {
  44   const station = new ChargingStation(data.index, data.templateFile);
  45   station.start();
  46 }