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 3a723eca25dd5dd86902c510354c9069332643d6..d9e462d064967b75255dc333f3926f28b14b4cf4 100644 (file)
--- a/src/charging-station/ChargingStationWorker.ts
+++ b/src/charging-station/ChargingStationWorker.ts
@@ -1,47 +1,64 @@
 // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
 
-import { AsyncResource } from 'node:async_hooks';
 import { parentPort } from 'node:worker_threads';
 
 import { ThreadWorker } from 'poolifier';
 
 import { ChargingStation } from './ChargingStation';
+import { BaseError } from '../exception';
 import type { ChargingStationWorkerData } from '../types';
 import { Configuration } from '../utils';
-import { WorkerConstants, type WorkerMessage, WorkerMessageEvents } from '../worker';
-
-const moduleName = 'ChargingStationWorker';
+import { type WorkerMessage, WorkerMessageEvents } from '../worker';
 
 /**
  * Creates and starts a charging station instance
  *
- * @param data - workerData
+ * @param data - data sent to worker
  */
 const startChargingStation = (data?: ChargingStationWorkerData): void => {
   new ChargingStation(data!.index, data!.templateFile).start();
 };
 
-class ChargingStationWorker extends AsyncResource {
+class ChargingStationWorker<Data extends ChargingStationWorkerData> {
   constructor() {
-    super(moduleName);
     // Add message listener to create and start charging station from the main thread
-    parentPort?.on('message', (message: WorkerMessage<ChargingStationWorkerData>) => {
-      if (message.event === WorkerMessageEvents.startWorkerElement) {
-        this.runInAsyncScope(
-          startChargingStation.bind(this) as (data?: ChargingStationWorkerData) => void,
-          this,
-          message.data,
-        );
+    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,
+            )}'`,
+          );
       }
     });
   }
 }
 
-export let chargingStationWorker: ChargingStationWorker | ThreadWorker<ChargingStationWorkerData>;
+export let chargingStationWorker:
+  | ChargingStationWorker<ChargingStationWorkerData>
+  | ThreadWorker<ChargingStationWorkerData>;
 if (Configuration.workerPoolInUse()) {
-  chargingStationWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation, {
-    maxInactiveTime: WorkerConstants.POOL_MAX_INACTIVE_TIME,
-  });
+  chargingStationWorker = new ThreadWorker<ChargingStationWorkerData>(startChargingStation);
 } else {
-  chargingStationWorker = new ChargingStationWorker();
+  chargingStationWorker = new ChargingStationWorker<ChargingStationWorkerData>();
 }