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({
  27       index: (workerData as Record<string, unknown>).index as number,
  28       templateFile: (workerData as Record<string, unknown>).templateFile as string,
  29     });
  30   }
  31 }
  32
  33 /**
  34  * Listen messages send by the main thread
  35  */
  36 function addMessageListener(): void {
  37   parentPort?.on('message', (message: ChargingStationWorkerMessage) => {
  38     if (message.id === ChargingStationWorkerMessageEvents.START_WORKER_ELEMENT) {
  39       startChargingStation(message.data);
  40     }
  41   });
  42 }
  43
  44 /**
  45  * Create and start a charging station instance
  46  *
  47  * @param data workerData
  48  */
  49 function startChargingStation(data: ChargingStationWorkerData): void {
  50   const station = new ChargingStation(data.index, data.templateFile);
  51   station.start();
  52 }