Fix message handling on WebSocket server

[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 89f81e75aff572dfdb9425df1d69a5f0990d70d2..06bc50e391695090eb25d6e469a98c5e5be7ce3d 100644 (file)
--- a/src/charging-station/Bootstrap.ts
+++ b/src/charging-station/Bootstrap.ts
@@ -1,9 +1,12 @@
-import { ChargingStationWorkerData, WorkerEvents, WorkerMessage } from '../types/Worker';
+// Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
+
+import { ChargingStationWorkerData, ChargingStationWorkerMessage, ChargingStationWorkerMessageEvents } from '../types/ChargingStationWorker';
 
 import Configuration from '../utils/Configuration';
-import { Storage } from '../utils/performance-storage/Storage';
-import { StorageFactory } from '../utils/performance-storage/StorageFactory';
+import { Storage } from '../performance/storage/Storage';
+import { StorageFactory } from '../performance/storage/StorageFactory';
 import Utils from '../utils/Utils';
+import WebSocketServer from './WebSocketServer';
 import WorkerAbstract from '../worker/WorkerAbstract';
 import WorkerFactory from '../worker/WorkerFactory';
 import chalk from 'chalk';
@@ -13,17 +16,20 @@ import { version } from '../../package.json';
 
 export default class Bootstrap {
   private static instance: Bootstrap | null = null;
-  private static workerImplementation: WorkerAbstract | null = null;
-  private static storage: Storage;
-  private version: string = version;
+  private workerImplementation: WorkerAbstract | null = null;
+  private readonly webSocketServer: WebSocketServer;
+  private readonly storage: Storage;
+  private numberOfChargingStations: number;
+  private readonly version: string = version;
   private started: boolean;
-  private workerScript: string;
+  private readonly workerScript: string;
 
   private constructor() {
     this.started = false;
     this.workerScript = path.join(path.resolve(__dirname, '../'), 'charging-station', 'ChargingStationWorker.js');
     this.initWorkerImplementation();
-    Bootstrap.storage = StorageFactory.getStorage(Configuration.getPerformanceStorage().type, Configuration.getPerformanceStorage().URI, this.logPrefix());
+    this.webSocketServer = new WebSocketServer();
+    this.storage = StorageFactory.getStorage(Configuration.getPerformanceStorage().type, Configuration.getPerformanceStorage().URI, this.logPrefix());
     Configuration.setConfigurationChangeCallback(async () => Bootstrap.getInstance().restart());
   }
 
@@ -37,20 +43,22 @@ export default class Bootstrap {
   public async start(): Promise<void> {
     if (isMainThread && !this.started) {
       try {
-        let numStationsTotal = 0;
-        await Bootstrap.workerImplementation.start();
+        this.numberOfChargingStations = 0;
+        await this.storage.open();
+        await this.workerImplementation.start();
+        this.webSocketServer.start();
         // Start ChargingStation object in worker thread
         if (Configuration.getStationTemplateURLs()) {
           for (const stationURL of Configuration.getStationTemplateURLs()) {
             try {
-              const nbStations = stationURL.numberOfStations ? stationURL.numberOfStations : 0;
+              const nbStations = stationURL.numberOfStations ?? 0;
               for (let index = 1; index <= nbStations; index++) {
                 const workerData: ChargingStationWorkerData = {
                   index,
                   templateFile: path.join(path.resolve(__dirname, '../'), 'assets', 'station-templates', path.basename(stationURL.file))
                 };
-                await Bootstrap.workerImplementation.addElement(workerData);
-                numStationsTotal++;
+                await this.workerImplementation.addElement(workerData);
+                this.numberOfChargingStations++;
               }
             } catch (error) {
               console.error(chalk.red('Charging station start with template file ' + stationURL.file + ' error '), error);
@@ -59,21 +67,27 @@ export default class Bootstrap {
         } else {
           console.warn(chalk.yellow('No stationTemplateURLs defined in configuration, exiting'));
         }
-        if (numStationsTotal === 0) {
+        if (this.numberOfChargingStations === 0) {
           console.warn(chalk.yellow('No charging station template enabled in configuration, exiting'));
         } else {
-          console.log(chalk.green(`Charging station simulator ${this.version} started with ${numStationsTotal.toString()} charging station(s) and ${Utils.workerDynamicPoolInUse() ? `${Configuration.getWorkerPoolMinSize().toString()}/` : ''}${Bootstrap.workerImplementation.size}${Utils.workerPoolInUse() ? `/${Configuration.getWorkerPoolMaxSize().toString()}` : ''} worker(s) concurrently running in '${Configuration.getWorkerProcess()}' mode${Bootstrap.workerImplementation.maxElementsPerWorker ? ` (${Bootstrap.workerImplementation.maxElementsPerWorker} charging station(s) per worker)` : ''}`));
+          console.log(chalk.green(`Charging stations simulator ${this.version} started with ${this.numberOfChargingStations.toString()} charging station(s) and ${Utils.workerDynamicPoolInUse() ? `${Configuration.getWorkerPoolMinSize().toString()}/` : ''}${this.workerImplementation.size}${Utils.workerPoolInUse() ? `/${Configuration.getWorkerPoolMaxSize().toString()}` : ''} worker(s) concurrently running in '${Configuration.getWorkerProcess()}' mode${this.workerImplementation.maxElementsPerWorker ? ` (${this.workerImplementation.maxElementsPerWorker} charging station(s) per worker)` : ''}`));
         }
         this.started = true;
       } catch (error) {
         console.error(chalk.red('Bootstrap start error '), error);
       }
+    } else {
+      console.error(chalk.red('Cannot start an already started charging stations simulator'));
     }
   }
 
   public async stop(): Promise<void> {
     if (isMainThread && this.started) {
-      await Bootstrap.workerImplementation.stop();
+      await this.workerImplementation.stop();
+      this.webSocketServer.stop();
+      await this.storage.close();
+    } else {
+      console.error(chalk.red('Trying to stop the charging stations simulator while not started'));
     }
     this.started = false;
   }
@@ -84,8 +98,8 @@ export default class Bootstrap {
     await this.start();
   }
 
-  private initWorkerImplementation() {
-    Bootstrap.workerImplementation = WorkerFactory.getWorkerImplementation<ChargingStationWorkerData>(this.workerScript, Configuration.getWorkerProcess(),
+  private initWorkerImplementation(): void {
+    this.workerImplementation = WorkerFactory.getWorkerImplementation<ChargingStationWorkerData>(this.workerScript, Configuration.getWorkerProcess(),
       {
         startDelay: Configuration.getWorkerStartDelay(),
         poolMaxSize: Configuration.getWorkerPoolMaxSize(),
@@ -93,10 +107,11 @@ export default class Bootstrap {
         elementsPerWorker: Configuration.getChargingStationsPerWorker(),
         poolOptions: {
           workerChoiceStrategy: Configuration.getWorkerPoolStrategy()
-        }
-      }, (msg: WorkerMessage) => {
-        if (msg.id === WorkerEvents.PERFORMANCE_STATISTICS) {
-          Bootstrap.storage.storePerformanceStatistics(msg.data);
+        },
+        messageHandler: async (msg: ChargingStationWorkerMessage) => {
+          if (msg.id === ChargingStationWorkerMessageEvents.PERFORMANCE_STATISTICS) {
+            await this.storage.storePerformanceStatistics(msg.data);
+          }
         }
       });
   }