src/charging-station/ChargingStationWorker.ts

   1 // Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
   2
   3 import {
   4   ChargingStationWorkerData,
   5   ChargingStationWorkerMessage,
   6   ChargingStationWorkerMessageEvents,
   7 } from '../types/ChargingStationWorker';
   8 import { parentPort, workerData } from 'worker_threads';
   9
  10 import ChargingStation from './ChargingStation';
  11 import { ThreadWorker } from 'poolifier';
  12 import Utils from '../utils/Utils';
  13 import WorkerConstants from '../worker/WorkerConstants';
  14
  15 // Conditionally export ThreadWorker instance for pool usage
  16 export let threadWorker: ThreadWorker;
  17 if (Utils.workerPoolInUse()) {
  18   threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
  19     maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
  20     async: false,
  21   });
  22 } else {
  23   // Add message listener to start charging station from main thread
  24   addMessageListener();
  25   if (!Utils.isUndefined(workerData)) {
  26     startChargingStation(workerData as ChargingStationWorkerData);
  27   }
  28 }
  29
  30 /**
  31  * Listen messages send by the main thread
  32  */
  33 function addMessageListener(): void {
  34   parentPort?.on('message', (message: ChargingStationWorkerMessage) => {
  35     if (message.id === ChargingStationWorkerMessageEvents.START_WORKER_ELEMENT) {
  36       startChargingStation(message.data);
  37     }
  38   });
  39 }
  40
  41 /**
  42  * Create and start a charging station instance
  43  *
  44  * @param data workerData
  45  */
  46 function startChargingStation(data: ChargingStationWorkerData): void {
  47   const station = new ChargingStation(data.index, data.templateFile);
  48   station.start();
  49 }