src/charging-station/ChargingStationWorker.ts

   1 // Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
   2
   3 import { parentPort, workerData } from 'worker_threads';
   4
   5 import { ThreadWorker } from 'poolifier';
   6
   7 import type { ChargingStationWorkerData } from '../types/ChargingStationWorker';
   8 import { WorkerMessage, WorkerMessageEvents } from '../types/Worker';
   9 import Utils from '../utils/Utils';
  10 import WorkerConstants from '../worker/WorkerConstants';
  11 import ChargingStation from './ChargingStation';
  12 import { ChargingStationUtils } from './ChargingStationUtils';
  13
  14 // Conditionally export ThreadWorker instance for pool usage
  15 export let threadWorker: ThreadWorker;
  16 if (ChargingStationUtils.workerPoolInUse()) {
  17   threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
  18     maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
  19     async: false,
  20   });
  21 } else {
  22   // Add message listener to start charging station from main thread
  23   addMessageListener();
  24   if (Utils.isUndefined(workerData) === false) {
  25     startChargingStation(workerData as ChargingStationWorkerData);
  26   }
  27 }
  28
  29 /**
  30  * Listen messages send by the main thread
  31  */
  32 function addMessageListener(): void {
  33   parentPort?.on('message', (message: WorkerMessage<ChargingStationWorkerData>) => {
  34     if (message.id === WorkerMessageEvents.START_WORKER_ELEMENT) {
  35       startChargingStation(message.data);
  36     }
  37   });
  38 }
  39
  40 /**
  41  * Create and start a charging station instance
  42  *
  43  * @param data - workerData
  44  */
  45 function startChargingStation(data: ChargingStationWorkerData): void {
  46   const station = new ChargingStation(data.index, data.templateFile);
  47   station.start();
  48 }