fix: untangle worker set message from application message

[e-mobility-charging-stations-simulator.git] / src / charging-station / ChargingStationWorker.ts

diff --git a/src/charging-station/ChargingStationWorker.ts b/src/charging-station/ChargingStationWorker.ts
index 0ae95a618913e724eaab7c0dd8d509d4590b0e8c..779c638a49fab5ec30119e184682335afa01b20d 100644 (file)
--- a/src/charging-station/ChargingStationWorker.ts
+++ b/src/charging-station/ChargingStationWorker.ts
@@ -1,46 +1,69 @@
-// Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
+// Partial Copyright Jerome Benoit. 2021-2024. All Rights Reserved.
 
-import { parentPort, workerData } from 'node:worker_threads';
+import { parentPort } from 'node:worker_threads'
 
-import { ThreadWorker } from 'poolifier';
+import { ThreadWorker } from 'poolifier'
 
-import { ChargingStation } from './ChargingStation';
-import type { ChargingStationWorkerData } from '../types';
-import { Configuration, Utils } from '../utils';
-import { WorkerConstants, type WorkerMessage, WorkerMessageEvents } from '../worker';
+import { BaseError } from '../exception/index.js'
+import type { ChargingStationInfo, ChargingStationWorkerData } from '../types/index.js'
+import { Configuration } from '../utils/index.js'
+import { type WorkerDataError, type WorkerMessage, WorkerMessageEvents } from '../worker/index.js'
+import { ChargingStation } from './ChargingStation.js'
 
-/**
- * Create and start a charging station instance
- *
- * @param data - workerData
- */
-const startChargingStation = (data: ChargingStationWorkerData): void => {
-  const station = new ChargingStation(data.index, data.templateFile);
-  station.start();
-};
-
-/**
- * Listen messages send by the main thread
- */
-const addMessageListener = (): void => {
-  parentPort?.on('message', (message: WorkerMessage<ChargingStationWorkerData>) => {
-    if (message.id === WorkerMessageEvents.startWorkerElement) {
-      startChargingStation(message.data);
-    }
-  });
-};
-
-// Conditionally export ThreadWorker instance for pool usage
-export let threadWorker: ThreadWorker;
+export let chargingStationWorker: object
 if (Configuration.workerPoolInUse()) {
-  threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
-    maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
-    async: false,
-  });
+  chargingStationWorker = new ThreadWorker<
+  ChargingStationWorkerData,
+  ChargingStationInfo | undefined
+  >((data?: ChargingStationWorkerData): ChargingStationInfo | undefined => {
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const { index, templateFile, options } = data!
+    return new ChargingStation(index, templateFile, options).stationInfo
+  })
 } else {
-  // Add message listener to start charging station from main thread
-  addMessageListener();
-  if (Utils.isUndefined(workerData) === false) {
-    startChargingStation(workerData as ChargingStationWorkerData);
+  // eslint-disable-next-line @typescript-eslint/no-extraneous-class
+  class ChargingStationWorker<Data extends ChargingStationWorkerData> {
+    constructor () {
+      parentPort?.on('message', (message: WorkerMessage<Data>) => {
+        const { uuid, event, data } = message
+        switch (event) {
+          case WorkerMessageEvents.addWorkerElement:
+            try {
+              const chargingStation = new ChargingStation(
+                data.index,
+                data.templateFile,
+                data.options
+              )
+              parentPort?.postMessage({
+                uuid,
+                event: WorkerMessageEvents.addedWorkerElement,
+                // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+                data: chargingStation.stationInfo!
+              } satisfies WorkerMessage<ChargingStationInfo>)
+            } catch (error) {
+              parentPort?.postMessage({
+                uuid,
+                event: WorkerMessageEvents.workerElementError,
+                data: {
+                  event,
+                  name: (error as Error).name,
+                  message: (error as Error).message,
+                  stack: (error as Error).stack
+                }
+              } satisfies WorkerMessage<WorkerDataError>)
+            }
+            break
+          default:
+            throw new BaseError(
+              `Unknown worker event: '${event}' received with data: '${JSON.stringify(
+                data,
+                undefined,
+                2
+              )}'`
+            )
+        }
+      })
+    }
   }
+  chargingStationWorker = new ChargingStationWorker<ChargingStationWorkerData>()
 }