refactor: cleanup imports

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

diff --git a/src/charging-station/Bootstrap.ts b/src/charging-station/Bootstrap.ts
index dc1e2f1cab9c360b673d06d30382add0f02b6827..8a3f9078d92ccafcdaf8013e71c5502b17d4c1a0 100644 (file)
--- a/src/charging-station/Bootstrap.ts
+++ b/src/charging-station/Bootstrap.ts
@@ -1,15 +1,16 @@
 // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
 
 import { EventEmitter } from 'node:events';
-import path from 'node:path';
+import { dirname, extname, join } from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { type Worker, isMainThread } from 'node:worker_threads';
+import { isMainThread } from 'node:worker_threads';
 
 import chalk from 'chalk';
 
+import { ChargingStationUtils } from './ChargingStationUtils';
 import type { AbstractUIServer } from './ui-server/AbstractUIServer';
 import { UIServerFactory } from './ui-server/UIServerFactory';
-import packageJson from '../../package.json' assert { type: 'json' };
+import { version } from '../../package.json' assert { type: 'json' };
 import { BaseError } from '../exception';
 import { type Storage, StorageFactory } from '../performance';
 import {
@@ -30,7 +31,7 @@ import {
   handleUnhandledRejection,
   logger,
 } from '../utils';
-import { type MessageHandler, type WorkerAbstract, WorkerFactory } from '../worker';
+import { type WorkerAbstract, WorkerFactory } from '../worker';
 
 const moduleName = 'Bootstrap';
 
@@ -47,7 +48,7 @@ export class Bootstrap extends EventEmitter {
   private readonly uiServer!: AbstractUIServer | null;
   private readonly storage!: Storage;
   private numberOfStartedChargingStations!: number;
-  private readonly version: string = packageJson.version;
+  private readonly version: string = version;
   private initializedCounters: boolean;
   private started: boolean;
   private starting: boolean;
@@ -68,9 +69,9 @@ export class Bootstrap extends EventEmitter {
     this.initializedCounters = false;
     this.initializeCounters();
     this.workerImplementation = null;
-    this.workerScript = path.join(
-      path.dirname(fileURLToPath(import.meta.url)),
-      `ChargingStationWorker${path.extname(fileURLToPath(import.meta.url))}`
+    this.workerScript = join(
+      dirname(fileURLToPath(import.meta.url)),
+      `ChargingStationWorker${extname(fileURLToPath(import.meta.url))}`
     );
     Configuration.getUIServer().enabled === true &&
       (this.uiServer = UIServerFactory.getUIServerImplementation(Configuration.getUIServer()));
@@ -91,7 +92,10 @@ export class Bootstrap extends EventEmitter {
   }
 
   public async start(): Promise<void> {
-    if (isMainThread && this.started === false) {
+    if (!isMainThread) {
+      throw new Error('Cannot start charging stations simulator from worker thread');
+    }
+    if (this.started === false) {
       if (this.starting === false) {
         this.starting = true;
         this.initializeCounters();
@@ -134,6 +138,7 @@ export class Bootstrap extends EventEmitter {
             }`
           )
         );
+        console.info(chalk.green('Worker set/pool information:'), this.workerImplementation?.info);
         this.started = true;
         this.starting = false;
       } else {
@@ -145,7 +150,10 @@ export class Bootstrap extends EventEmitter {
   }
 
   public async stop(): Promise<void> {
-    if (isMainThread && this.started === true) {
+    if (!isMainThread) {
+      throw new Error('Cannot stop charging stations simulator from worker thread');
+    }
+    if (this.started === true) {
       if (this.stopping === false) {
         this.stopping = true;
         await this.uiServer?.sendInternalRequest(
@@ -155,7 +163,22 @@ export class Bootstrap extends EventEmitter {
             Constants.EMPTY_FREEZED_OBJECT
           )
         );
-        await this.waitForChargingStationsStopped();
+        await Promise.race([
+          ChargingStationUtils.waitForChargingStationEvents(
+            this,
+            ChargingStationWorkerMessageEvents.stopped,
+            this.numberOfChargingStations
+          ),
+          new Promise<string>((resolve) => {
+            setTimeout(() => {
+              const message = `Timeout reached ${Utils.formatDurationMilliSeconds(
+                Constants.STOP_SIMULATOR_TIMEOUT
+              )} at stopping charging stations simulator`;
+              console.warn(chalk.yellow(message));
+              resolve(message);
+            }, Constants.STOP_SIMULATOR_TIMEOUT);
+          }),
+        ]);
         await this.workerImplementation?.stop();
         this.workerImplementation = null;
         this.uiServer?.stop();
@@ -190,8 +213,8 @@ export class Bootstrap extends EventEmitter {
           elementsPerWorker: Configuration.getWorker().elementsPerWorker,
           poolOptions: {
             workerChoiceStrategy: Configuration.getWorker().poolStrategy,
+            messageHandler: this.messageHandler.bind(this) as (message: unknown) => void,
           },
-          messageHandler: this.messageHandler.bind(this) as MessageHandler<Worker>,
         }
       ));
   }
@@ -311,8 +334,8 @@ export class Bootstrap extends EventEmitter {
   ): Promise<void> {
     await this.workerImplementation?.addElement({
       index,
-      templateFile: path.join(
-        path.dirname(fileURLToPath(import.meta.url)),
+      templateFile: join(
+        dirname(fileURLToPath(import.meta.url)),
         'assets',
         'station-templates',
         stationTemplateUrl.file
@@ -332,23 +355,6 @@ export class Bootstrap extends EventEmitter {
       });
   };
 
-  private waitForChargingStationsStopped = async (
-    stoppedEventsToWait = this.numberOfStartedChargingStations
-  ): Promise<number> => {
-    return new Promise((resolve) => {
-      let stoppedEvents = 0;
-      if (stoppedEventsToWait === 0) {
-        resolve(stoppedEvents);
-      }
-      this.on(ChargingStationWorkerMessageEvents.stopped, () => {
-        ++stoppedEvents;
-        if (stoppedEvents === stoppedEventsToWait) {
-          resolve(stoppedEvents);
-        }
-      });
-    });
-  };
-
   private logPrefix = (): string => {
     return Utils.logPrefix(' Bootstrap |');
   };