src/charging-station/ChargingStationWorker.ts

   1 // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
   2
   3 import { AsyncResource } from 'node:async_hooks';
   4 import { parentPort } from 'node:worker_threads';
   5
   6 import { ThreadWorker } from 'poolifier';
   7
   8 import { ChargingStation } from './ChargingStation';
   9 import type { ChargingStationWorkerData } from '../types';
  10 import { Configuration } from '../utils';
  11 import { WorkerConstants, type WorkerMessage, WorkerMessageEvents } from '../worker';
  12
  13 /**
  14  * Create and start a charging station instance
  15  *
  16  * @param data - workerData
  17  */
  18 const startChargingStation = (data: ChargingStationWorkerData): void => {
  19   new ChargingStation(data.index, data.templateFile).start();
  20 };
  21
  22 class ChargingStationWorker extends AsyncResource {
  23   constructor() {
  24     super('ChargingStationWorker');
  25     // Add message listener to create and start charging station from the main thread
  26     parentPort?.on('message', (message: WorkerMessage<ChargingStationWorkerData>) => {
  27       if (message.id === WorkerMessageEvents.startWorkerElement) {
  28         this.run(message.data);
  29       }
  30     });
  31   }
  32
  33   private run(data: ChargingStationWorkerData): void {
  34     this.runInAsyncScope(
  35       startChargingStation.bind(this) as (data: ChargingStationWorkerData) => void,
  36       this,
  37       data
  38     );
  39   }
  40 }
  41
  42 export let chargingStationWorker: ChargingStationWorker;
  43 // Conditionally export ThreadWorker instance for pool usage
  44 export let threadWorker: ThreadWorker;
  45 if (Configuration.workerPoolInUse()) {
  46   threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
  47     maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
  48   });
  49 } else {
  50   chargingStationWorker = new ChargingStationWorker();
  51 }