fix: resolve promise on charging station events once

[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 62bad35fc03ef72dd18c742991e0d4c54ca5e187..d9e462d064967b75255dc333f3926f28b14b4cf4 100644 (file)
--- a/src/charging-station/ChargingStationWorker.ts
+++ b/src/charging-station/ChargingStationWorker.ts
@@ -1,48 +1,64 @@
 // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
 
-import { parentPort, workerData } from 'worker_threads';
+import { parentPort } from 'node:worker_threads';
 
 import { ThreadWorker } from 'poolifier';
 
-import type { ChargingStationWorkerData } from '../types/ChargingStationWorker';
-import { type WorkerMessage, WorkerMessageEvents } from '../types/Worker';
-import Utils from '../utils/Utils';
-import WorkerConstants from '../worker/WorkerConstants';
-import ChargingStation from './ChargingStation';
-import { ChargingStationUtils } from './ChargingStationUtils';
-
-// Conditionally export ThreadWorker instance for pool usage
-export let threadWorker: ThreadWorker;
-if (ChargingStationUtils.workerPoolInUse()) {
-  threadWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
-    maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
-    async: false,
-  });
-} else {
-  // Add message listener to start charging station from main thread
-  addMessageListener();
-  if (Utils.isUndefined(workerData) === false) {
-    startChargingStation(workerData as ChargingStationWorkerData);
-  }
-}
+import { ChargingStation } from './ChargingStation';
+import { BaseError } from '../exception';
+import type { ChargingStationWorkerData } from '../types';
+import { Configuration } from '../utils';
+import { type WorkerMessage, WorkerMessageEvents } from '../worker';
 
 /**
- * Listen messages send by the main thread
+ * Creates and starts a charging station instance
+ *
+ * @param data - data sent to worker
  */
-function addMessageListener(): void {
-  parentPort?.on('message', (message: WorkerMessage<ChargingStationWorkerData>) => {
-    if (message.id === WorkerMessageEvents.START_WORKER_ELEMENT) {
-      startChargingStation(message.data);
-    }
-  });
+const startChargingStation = (data?: ChargingStationWorkerData): void => {
+  new ChargingStation(data!.index, data!.templateFile).start();
+};
+
+class ChargingStationWorker<Data extends ChargingStationWorkerData> {
+  constructor() {
+    // Add message listener to create and start charging station from the main thread
+    parentPort?.on('message', (message: WorkerMessage<Data>) => {
+      switch (message.event) {
+        case WorkerMessageEvents.startWorkerElement:
+          try {
+            startChargingStation(message.data);
+            parentPort?.postMessage({
+              event: WorkerMessageEvents.startedWorkerElement,
+            });
+          } catch (error) {
+            parentPort?.postMessage({
+              event: WorkerMessageEvents.startWorkerElementError,
+              data: {
+                name: (error as Error).name,
+                message: (error as Error).message,
+                stack: (error as Error).stack,
+              },
+            });
+          }
+          break;
+        default:
+          throw new BaseError(
+            `Unknown worker event: '${message.event}' received with data: '${JSON.stringify(
+              message.data,
+              undefined,
+              2,
+            )}'`,
+          );
+      }
+    });
+  }
 }
 
-/**
- * Create and start a charging station instance
- *
- * @param data - workerData
- */
-function startChargingStation(data: ChargingStationWorkerData): void {
-  const station = new ChargingStation(data.index, data.templateFile);
-  station.start();
+export let chargingStationWorker:
+  | ChargingStationWorker<ChargingStationWorkerData>
+  | ThreadWorker<ChargingStationWorkerData>;
+if (Configuration.workerPoolInUse()) {
+  chargingStationWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation);
+} else {
+  chargingStationWorker = new ChargingStationWorker<ChargingStationWorkerData>();
 }