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 {
   8   ChargingStationWorkerData,
   9   ChargingStationWorkerMessage,
  10   ChargingStationWorkerMessageEvents,
  11 } from '../types/ChargingStationWorker';
  12 import Utils from '../utils/Utils';
  13 import WorkerConstants from '../worker/WorkerConstants';
  14 import ChargingStation from './ChargingStation';
  15 import { ChargingStationUtils } from './ChargingStationUtils';
  16
  17 // Conditionally export ThreadWorker instance for pool usage
  18 export let threadWorker: ThreadWorker;
  19 if (ChargingStationUtils.workerPoolInUse()) {
  20   threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
  21     maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
  22     async: false,
  23   });
  24 } else {
  25   // Add message listener to start charging station from main thread
  26   addMessageListener();
  27   if (Utils.isUndefined(workerData) === false) {
  28     startChargingStation(workerData as ChargingStationWorkerData);
  29   }
  30 }
  31
  32 /**
  33  * Listen messages send by the main thread
  34  */
  35 function addMessageListener(): void {
  36   parentPort?.on('message', (message: ChargingStationWorkerMessage<ChargingStationWorkerData>) => {
  37     if (message.id === ChargingStationWorkerMessageEvents.START_WORKER_ELEMENT) {
  38       startChargingStation(message.data);
  39     }
  40   });
  41 }
  42
  43 /**
  44  * Create and start a charging station instance
  45  *
  46  * @param data workerData
  47  */
  48 function startChargingStation(data: ChargingStationWorkerData): void {
  49   const station = new ChargingStation(data.index, data.templateFile);
  50   station.start();
  51 }
  52
  53 process.on('uncaughtException', (err) => {
  54   throw err;
  55 });
  56
  57 process.on('unhandledRejection', (reason) => {
  58   throw reason;
  59 });