// Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
-import path from 'path';
-import { fileURLToPath } from 'url';
-import { type Worker, isMainThread } from 'worker_threads';
+import { EventEmitter } from 'node:events';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { type Worker, 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 { version } from '../../package.json';
-import BaseError from '../exception/BaseError';
-import type { Storage } from '../performance/storage/Storage';
-import { StorageFactory } from '../performance/storage/StorageFactory';
+import { UIServerFactory } from './ui-server/UIServerFactory';
+import packageJson from '../../package.json' assert { type: 'json' };
+import { BaseError } from '../exception';
+import { type Storage, StorageFactory } from '../performance';
import {
type ChargingStationData,
type ChargingStationWorkerData,
type ChargingStationWorkerMessage,
type ChargingStationWorkerMessageData,
ChargingStationWorkerMessageEvents,
-} from '../types/ChargingStationWorker';
-import type { StationTemplateUrl } from '../types/ConfigurationData';
-import type { Statistics } from '../types/Statistics';
-import type { MessageHandler } from '../types/Worker';
-import Configuration from '../utils/Configuration';
-import logger from '../utils/Logger';
-import Utils from '../utils/Utils';
-import type WorkerAbstract from '../worker/WorkerAbstract';
-import WorkerFactory from '../worker/WorkerFactory';
+ ProcedureName,
+ type StationTemplateUrl,
+ type Statistics,
+} from '../types';
+import { Configuration, Constants, ErrorUtils, Utils, logger } from '../utils';
+import { type MessageHandler, type WorkerAbstract, WorkerFactory } from '../worker';
const moduleName = 'Bootstrap';
noChargingStationTemplates = 2,
}
-export class Bootstrap {
+export class Bootstrap extends EventEmitter {
private static instance: Bootstrap | null = null;
+ public numberOfChargingStations!: number;
+ public numberOfChargingStationTemplates!: number;
private workerImplementation: WorkerAbstract<ChargingStationWorkerData> | null;
- private readonly uiServer!: AbstractUIServer;
+ private readonly uiServer!: AbstractUIServer | null;
private readonly storage!: Storage;
- private numberOfChargingStationTemplates!: number | undefined;
- private numberOfChargingStations!: number;
private numberOfStartedChargingStations!: number;
- private readonly version: string = version;
+ private readonly version: string = packageJson.version;
+ private initializedCounters: boolean;
private started: boolean;
private readonly workerScript: string;
private constructor() {
+ super();
+ for (const signal of ['SIGINT', 'SIGQUIT', 'SIGTERM']) {
+ process.on(signal, this.gracefulShutdown);
+ }
+ // Enable unconditionally for now
+ ErrorUtils.handleUnhandledRejection();
+ ErrorUtils.handleUncaughtException();
+ this.initializedCounters = false;
this.started = false;
+ this.initializeCounters();
this.workerImplementation = null;
this.workerScript = path.join(
- path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../'),
- 'charging-station',
+ path.dirname(fileURLToPath(import.meta.url)),
`ChargingStationWorker${path.extname(fileURLToPath(import.meta.url))}`
);
- this.initialize();
Configuration.getUIServer().enabled === true &&
(this.uiServer = UIServerFactory.getUIServerImplementation(Configuration.getUIServer()));
Configuration.getPerformanceStorage().enabled === true &&
public async start(): Promise<void> {
if (isMainThread && this.started === false) {
- try {
- // Enable unconditionally for now
- this.logUnhandledRejection();
- this.logUncaughtException();
- this.initialize();
- await this.storage?.open();
- await this.workerImplementation?.start();
- this.uiServer?.start();
- const stationTemplateUrls = Configuration.getStationTemplateUrls();
- this.numberOfChargingStationTemplates = stationTemplateUrls?.length;
- // Start ChargingStation object in worker thread
- if (!Utils.isEmptyArray(stationTemplateUrls)) {
- for (const stationTemplateUrl of stationTemplateUrls) {
- try {
- const nbStations = stationTemplateUrl.numberOfStations ?? 0;
- for (let index = 1; index <= nbStations; index++) {
- await this.startChargingStation(index, stationTemplateUrl);
- }
- } catch (error) {
- console.error(
- chalk.red(
- `Error at starting charging station with template file ${stationTemplateUrl.file}: `
- ),
- error
- );
- }
+ this.initializeCounters();
+ this.initializeWorkerImplementation();
+ await this.workerImplementation?.start();
+ await this.storage?.open();
+ this.uiServer?.start();
+ // Start ChargingStation object instance in worker thread
+ for (const stationTemplateUrl of Configuration.getStationTemplateUrls()) {
+ try {
+ const nbStations = stationTemplateUrl.numberOfStations ?? 0;
+ for (let index = 1; index <= nbStations; index++) {
+ await this.startChargingStation(index, stationTemplateUrl);
}
- } else {
- console.warn(
- chalk.yellow("'stationTemplateUrls' not defined or empty in configuration, exiting")
- );
- process.exit(exitCodes.missingChargingStationsConfiguration);
- }
- if (this.numberOfChargingStations === 0) {
- console.warn(
- chalk.yellow('No charging station template enabled in configuration, exiting')
- );
- process.exit(exitCodes.noChargingStationTemplates);
- } else {
- console.info(
- chalk.green(
- `Charging stations simulator ${
- this.version
- } started with ${this.numberOfChargingStations.toString()} charging station(s) from ${this.numberOfChargingStationTemplates.toString()} configured charging station template(s) and ${
- ChargingStationUtils.workerDynamicPoolInUse()
- ? `${Configuration.getWorker().poolMinSize?.toString()}/`
- : ''
- }${this.workerImplementation?.size}${
- ChargingStationUtils.workerPoolInUse()
- ? `/${Configuration.getWorker().poolMaxSize?.toString()}`
- : ''
- } worker(s) concurrently running in '${Configuration.getWorker().processType}' mode${
- this.workerImplementation?.maxElementsPerWorker
- ? ` (${this.workerImplementation?.maxElementsPerWorker} charging station(s) per worker)`
- : ''
- }`
- )
+ } catch (error) {
+ console.error(
+ chalk.red(
+ `Error at starting charging station with template file ${stationTemplateUrl.file}: `
+ ),
+ error
);
}
- this.started = true;
- } catch (error) {
- console.error(chalk.red('Bootstrap start error: '), error);
}
+ console.info(
+ chalk.green(
+ `Charging stations simulator ${
+ this.version
+ } started with ${this.numberOfChargingStations.toString()} charging station(s) from ${this.numberOfChargingStationTemplates.toString()} configured charging station template(s) and ${
+ Configuration.workerDynamicPoolInUse()
+ ? `${Configuration.getWorker().poolMinSize?.toString()}/`
+ : ''
+ }${this.workerImplementation?.size}${
+ Configuration.workerPoolInUse()
+ ? `/${Configuration.getWorker().poolMaxSize?.toString()}`
+ : ''
+ } worker(s) concurrently running in '${Configuration.getWorker().processType}' mode${
+ !Utils.isNullOrUndefined(this.workerImplementation?.maxElementsPerWorker)
+ ? ` (${this.workerImplementation?.maxElementsPerWorker} charging station(s) per worker)`
+ : ''
+ }`
+ )
+ );
+ this.started = true;
} else {
console.error(chalk.red('Cannot start an already started charging stations simulator'));
}
public async stop(): Promise<void> {
if (isMainThread && this.started === true) {
+ await this.uiServer?.sendInternalRequest(
+ this.uiServer.buildProtocolRequest(
+ Utils.generateUUID(),
+ ProcedureName.STOP_CHARGING_STATION,
+ Constants.EMPTY_FREEZED_OBJECT
+ )
+ );
+ await this.waitForChargingStationsStopped();
await this.workerImplementation?.stop();
this.workerImplementation = null;
this.uiServer?.stop();
await this.storage?.close();
+ this.initializedCounters = false;
this.started = false;
} else {
console.error(chalk.red('Cannot stop a not started charging stations simulator'));
public async restart(): Promise<void> {
await this.stop();
- this.initialize();
await this.start();
}
// );
try {
switch (msg.id) {
- case ChargingStationWorkerMessageEvents.STARTED:
+ case ChargingStationWorkerMessageEvents.started:
this.workerEventStarted(msg.data as ChargingStationData);
+ this.emit(ChargingStationWorkerMessageEvents.started, msg.data as ChargingStationData);
break;
- case ChargingStationWorkerMessageEvents.STOPPED:
+ case ChargingStationWorkerMessageEvents.stopped:
this.workerEventStopped(msg.data as ChargingStationData);
+ this.emit(ChargingStationWorkerMessageEvents.stopped, msg.data as ChargingStationData);
break;
- case ChargingStationWorkerMessageEvents.UPDATED:
+ case ChargingStationWorkerMessageEvents.updated:
this.workerEventUpdated(msg.data as ChargingStationData);
+ this.emit(ChargingStationWorkerMessageEvents.updated, msg.data as ChargingStationData);
break;
- case ChargingStationWorkerMessageEvents.PERFORMANCE_STATISTICS:
+ case ChargingStationWorkerMessageEvents.performanceStatistics:
this.workerEventPerformanceStatistics(msg.data as Statistics);
+ this.emit(
+ ChargingStationWorkerMessageEvents.performanceStatistics,
+ msg.data as Statistics
+ );
break;
default:
throw new BaseError(
this.storage.storePerformanceStatistics(data) as void;
};
- private initialize() {
- this.numberOfChargingStationTemplates = 0;
- this.numberOfChargingStations = 0;
- this.numberOfStartedChargingStations = 0;
- this.initializeWorkerImplementation();
- }
-
- private logUncaughtException(): void {
- process.on('uncaughtException', (error: Error) => {
- console.error(chalk.red('Uncaught exception: '), error);
- });
- }
-
- private logUnhandledRejection(): void {
- process.on('unhandledRejection', (reason: unknown) => {
- console.error(chalk.red('Unhandled rejection: '), reason);
- });
+ private initializeCounters() {
+ if (this.initializedCounters === false) {
+ this.numberOfChargingStationTemplates = 0;
+ this.numberOfChargingStations = 0;
+ const stationTemplateUrls = Configuration.getStationTemplateUrls();
+ if (Utils.isNotEmptyArray(stationTemplateUrls)) {
+ this.numberOfChargingStationTemplates = stationTemplateUrls.length;
+ for (const stationTemplateUrl of stationTemplateUrls) {
+ this.numberOfChargingStations += stationTemplateUrl.numberOfStations ?? 0;
+ }
+ } else {
+ console.warn(
+ chalk.yellow("'stationTemplateUrls' not defined or empty in configuration, exiting")
+ );
+ process.exit(exitCodes.missingChargingStationsConfiguration);
+ }
+ if (this.numberOfChargingStations === 0) {
+ console.warn(
+ chalk.yellow('No charging station template enabled in configuration, exiting')
+ );
+ process.exit(exitCodes.noChargingStationTemplates);
+ }
+ this.numberOfStartedChargingStations = 0;
+ this.initializedCounters = true;
+ }
}
private async startChargingStation(
index: number,
stationTemplateUrl: StationTemplateUrl
): Promise<void> {
- const workerData: ChargingStationWorkerData = {
+ await this.workerImplementation?.addElement({
index,
templateFile: path.join(
- path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../'),
+ path.dirname(fileURLToPath(import.meta.url)),
'assets',
'station-templates',
stationTemplateUrl.file
),
- };
- await this.workerImplementation?.addElement(workerData);
- ++this.numberOfChargingStations;
+ });
}
- private logPrefix(): string {
+ private gracefulShutdown = (): void => {
+ console.info(`${chalk.green('Graceful shutdown')}`);
+ this.stop()
+ .then(() => {
+ process.exit(0);
+ })
+ .catch((error) => {
+ console.error(chalk.red('Error while shutdowning charging stations simulator: '), error);
+ process.exit(1);
+ });
+ };
+
+ 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 |');
- }
+ };
}
repositories / e-mobility-charging-stations-simulator.git / blobdiff