src/charging-station/ChargingStationWorker.ts

   1 // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
   2
   3 import { parentPort, workerData } from 'worker_threads';
   4
   5 import { ThreadWorker } from 'poolifier';
   6
   7 import { ChargingStation } from './ChargingStation';
   8 import { ChargingStationUtils } from './ChargingStationUtils';
   9 import type { ChargingStationWorkerData } from '../types';
  10 import { Utils } from '../utils/Utils';
  11 import { WorkerConstants, type WorkerMessage, WorkerMessageEvents } from '../worker';
  12
  13 // Conditionally export ThreadWorker instance for pool usage
  14 export let threadWorker: ThreadWorker;
  15 if (ChargingStationUtils.workerPoolInUse()) {
  16   threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
  17     maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
  18     async: false,
  19   });
  20 } else {
  21   // Add message listener to start charging station from main thread
  22   addMessageListener();
  23   if (Utils.isUndefined(workerData) === false) {
  24     startChargingStation(workerData as ChargingStationWorkerData);
  25   }
  26 }
  27
  28 /**
  29  * Listen messages send by the main thread
  30  */
  31 function addMessageListener(): void {
  32   parentPort?.on('message', (message: WorkerMessage<ChargingStationWorkerData>) => {
  33     if (message.id === WorkerMessageEvents.START_WORKER_ELEMENT) {
  34       startChargingStation(message.data);
  35     }
  36   });
  37 }
  38
  39 /**
  40  * Create and start a charging station instance
  41  *
  42  * @param data - workerData
  43  */
  44 function startChargingStation(data: ChargingStationWorkerData): void {
  45   const station = new ChargingStation(data.index, data.templateFile);
  46   station.start();
  47 }