import { EventEmitter } from 'node:events';
import { dirname, extname, join } from 'node:path';
+import process, { exit } from 'node:process';
import { fileURLToPath } from 'node:url';
-import { isMainThread } from 'node:worker_threads';
import chalk from 'chalk';
import { availableParallelism } from 'poolifier';
import { waitChargingStationEvents } from './Helpers';
import type { AbstractUIServer } from './ui-server/AbstractUIServer';
import { UIServerFactory } from './ui-server/UIServerFactory';
-import { version } from '../../package.json' assert { type: 'json' };
+import { version } from '../../package.json';
import { BaseError } from '../exception';
import { type Storage, StorageFactory } from '../performance';
import {
private static instance: Bootstrap | null = null;
public numberOfChargingStations!: number;
public numberOfChargingStationTemplates!: number;
- private workerImplementation: WorkerAbstract<ChargingStationWorkerData> | null;
- private readonly uiServer!: AbstractUIServer | null;
- private readonly storage!: Storage;
+ private workerImplementation?: WorkerAbstract<ChargingStationWorkerData>;
+ private readonly uiServer?: AbstractUIServer;
+ private storage?: Storage;
private numberOfStartedChargingStations!: number;
private readonly version: string = version;
private initializedCounters: boolean;
private started: boolean;
private starting: boolean;
private stopping: boolean;
- private readonly workerScript: string;
private constructor() {
super();
for (const signal of ['SIGINT', 'SIGQUIT', 'SIGTERM']) {
- process.on(signal, this.gracefulShutdown);
+ process.on(signal, this.gracefulShutdown.bind(this));
}
// Enable unconditionally for now
handleUnhandledRejection();
this.stopping = false;
this.initializedCounters = false;
this.initializeCounters();
- this.workerImplementation = null;
- this.workerScript = join(
- dirname(fileURLToPath(import.meta.url)),
- `ChargingStationWorker${extname(fileURLToPath(import.meta.url))}`,
+ this.uiServer = UIServerFactory.getUIServerImplementation(
+ Configuration.getConfigurationSection<UIServerConfiguration>(ConfigurationSection.uiServer),
);
- const uiServerConfiguration = Configuration.getConfigurationSection<UIServerConfiguration>(
- ConfigurationSection.uiServer,
- );
- uiServerConfiguration.enabled === true &&
- (this.uiServer = UIServerFactory.getUIServerImplementation(uiServerConfiguration));
- const performanceStorageConfiguration =
- Configuration.getConfigurationSection<StorageConfiguration>(
- ConfigurationSection.performanceStorage,
- );
- performanceStorageConfiguration.enabled === true &&
- (this.storage = StorageFactory.getStorage(
- performanceStorageConfiguration.type!,
- performanceStorageConfiguration.uri!,
- this.logPrefix(),
- ));
- Configuration.configurationChangeCallback = async () => Bootstrap.getInstance().restart();
+ Configuration.configurationChangeCallback = async () => Bootstrap.getInstance().restart(false);
}
public static getInstance(): Bootstrap {
}
public async start(): Promise<void> {
- if (!isMainThread) {
- throw new BaseError('Cannot start charging stations simulator from worker thread');
- }
if (this.started === false) {
if (this.starting === false) {
this.starting = true;
+ this.on(ChargingStationWorkerMessageEvents.started, this.workerEventStarted);
+ this.on(ChargingStationWorkerMessageEvents.stopped, this.workerEventStopped);
+ this.on(ChargingStationWorkerMessageEvents.updated, this.workerEventUpdated);
+ this.on(
+ ChargingStationWorkerMessageEvents.performanceStatistics,
+ this.workerEventPerformanceStatistics,
+ );
this.initializeCounters();
const workerConfiguration = Configuration.getConfigurationSection<WorkerConfiguration>(
ConfigurationSection.worker,
);
this.initializeWorkerImplementation(workerConfiguration);
await this.workerImplementation?.start();
- await this.storage?.open();
- this.uiServer?.start();
+ const performanceStorageConfiguration =
+ Configuration.getConfigurationSection<StorageConfiguration>(
+ ConfigurationSection.performanceStorage,
+ );
+ if (performanceStorageConfiguration.enabled === true) {
+ this.storage = StorageFactory.getStorage(
+ performanceStorageConfiguration.type!,
+ performanceStorageConfiguration.uri!,
+ this.logPrefix(),
+ );
+ await this.storage?.open();
+ }
+ Configuration.getConfigurationSection<UIServerConfiguration>(ConfigurationSection.uiServer)
+ .enabled === true && this.uiServer?.start();
// Start ChargingStation object instance in worker thread
for (const stationTemplateUrl of Configuration.getStationTemplateUrls()!) {
try {
Configuration.workerDynamicPoolInUse() &&
console.warn(
chalk.yellow(
- 'Charging stations simulator is using dynamic pool mode. This is an experimental feature with known issues.\nPlease consider using static pool or worker set mode instead',
+ 'Charging stations simulator is using dynamic pool mode. This is an experimental feature with known issues.\nPlease consider using fixed pool or worker set mode instead',
),
);
console.info(chalk.green('Worker set/pool information:'), this.workerImplementation?.info);
}
}
- public async stop(): Promise<void> {
- if (!isMainThread) {
- throw new BaseError('Cannot stop charging stations simulator from worker thread');
- }
+ public async stop(stopChargingStations = true): Promise<void> {
if (this.started === true) {
if (this.stopping === false) {
this.stopping = true;
- await this.uiServer?.sendInternalRequest(
- this.uiServer.buildProtocolRequest(
- generateUUID(),
- ProcedureName.STOP_CHARGING_STATION,
- Constants.EMPTY_FROZEN_OBJECT,
- ),
- );
- await Promise.race([
- waitChargingStationEvents(
- this,
- ChargingStationWorkerMessageEvents.stopped,
- this.numberOfChargingStations,
- ),
- new Promise<string>((resolve) => {
- setTimeout(() => {
- const message = `Timeout reached ${formatDurationMilliSeconds(
- Constants.STOP_SIMULATOR_TIMEOUT,
- )} at stopping charging stations simulator`;
- console.warn(chalk.yellow(message));
- resolve(message);
- }, Constants.STOP_SIMULATOR_TIMEOUT);
- }),
- ]);
+ if (stopChargingStations === true) {
+ await this.uiServer?.sendInternalRequest(
+ this.uiServer.buildProtocolRequest(
+ generateUUID(),
+ ProcedureName.STOP_CHARGING_STATION,
+ Constants.EMPTY_FROZEN_OBJECT,
+ ),
+ );
+ try {
+ await this.waitChargingStationsStopped();
+ } catch (error) {
+ console.error(chalk.red('Error while waiting for charging stations to stop: '), error);
+ }
+ }
await this.workerImplementation?.stop();
- this.workerImplementation = null;
+ delete this.workerImplementation;
+ this.removeAllListeners();
this.uiServer?.stop();
await this.storage?.close();
+ delete this.storage;
this.resetCounters();
this.initializedCounters = false;
this.started = false;
}
}
- public async restart(): Promise<void> {
- await this.stop();
+ public async restart(stopChargingStations?: boolean): Promise<void> {
+ await this.stop(stopChargingStations);
await this.start();
}
+ private async waitChargingStationsStopped(): Promise<string> {
+ return new Promise<string>((resolve, reject) => {
+ const waitTimeout = setTimeout(() => {
+ const message = `Timeout ${formatDurationMilliSeconds(
+ Constants.STOP_CHARGING_STATIONS_TIMEOUT,
+ )} reached at stopping charging stations`;
+ console.warn(chalk.yellow(message));
+ reject(new Error(message));
+ }, Constants.STOP_CHARGING_STATIONS_TIMEOUT);
+ waitChargingStationEvents(
+ this,
+ ChargingStationWorkerMessageEvents.stopped,
+ this.numberOfChargingStations,
+ )
+ .then(() => {
+ resolve('Charging stations stopped');
+ })
+ .catch(reject)
+ .finally(() => {
+ clearTimeout(waitTimeout);
+ });
+ });
+ }
+
private initializeWorkerImplementation(workerConfiguration: WorkerConfiguration): void {
let elementsPerWorker: number | undefined;
- if (workerConfiguration?.elementsPerWorker === 'auto') {
- elementsPerWorker =
- this.numberOfChargingStations > availableParallelism()
- ? Math.round(this.numberOfChargingStations / (availableParallelism() * 1.5))
- : 1;
+ switch (workerConfiguration?.elementsPerWorker) {
+ case 'auto':
+ elementsPerWorker =
+ this.numberOfChargingStations > availableParallelism()
+ ? Math.round(this.numberOfChargingStations / (availableParallelism() * 1.5))
+ : 1;
+ break;
+ case 'all':
+ elementsPerWorker = this.numberOfChargingStations;
+ break;
}
- this.workerImplementation === null &&
- (this.workerImplementation = WorkerFactory.getWorkerImplementation<ChargingStationWorkerData>(
- this.workerScript,
- workerConfiguration.processType!,
- {
- workerStartDelay: workerConfiguration.startDelay,
- elementStartDelay: workerConfiguration.elementStartDelay,
- poolMaxSize: workerConfiguration.poolMaxSize!,
- poolMinSize: workerConfiguration.poolMinSize!,
- elementsPerWorker: elementsPerWorker ?? (workerConfiguration.elementsPerWorker as number),
- poolOptions: {
- messageHandler: this.messageHandler.bind(this) as (message: unknown) => void,
- },
+ this.workerImplementation = WorkerFactory.getWorkerImplementation<ChargingStationWorkerData>(
+ join(
+ dirname(fileURLToPath(import.meta.url)),
+ `ChargingStationWorker${extname(fileURLToPath(import.meta.url))}`,
+ ),
+ workerConfiguration.processType!,
+ {
+ workerStartDelay: workerConfiguration.startDelay,
+ elementStartDelay: workerConfiguration.elementStartDelay,
+ poolMaxSize: workerConfiguration.poolMaxSize!,
+ poolMinSize: workerConfiguration.poolMinSize!,
+ elementsPerWorker: elementsPerWorker ?? (workerConfiguration.elementsPerWorker as number),
+ poolOptions: {
+ messageHandler: this.messageHandler.bind(this) as (message: unknown) => void,
+ workerOptions: { resourceLimits: workerConfiguration.resourceLimits },
},
- ));
+ },
+ );
}
private messageHandler(
// logger.debug(
// `${this.logPrefix()} ${moduleName}.messageHandler: Worker channel message received: ${JSON.stringify(
// msg,
- // null,
+ // undefined,
// 2,
// )}`,
// );
try {
switch (msg.event) {
case ChargingStationWorkerMessageEvents.started:
- this.workerEventStarted(msg.data as ChargingStationData);
this.emit(ChargingStationWorkerMessageEvents.started, msg.data as ChargingStationData);
break;
case ChargingStationWorkerMessageEvents.stopped:
- this.workerEventStopped(msg.data as ChargingStationData);
this.emit(ChargingStationWorkerMessageEvents.stopped, msg.data as ChargingStationData);
break;
case ChargingStationWorkerMessageEvents.updated:
- this.workerEventUpdated(msg.data as ChargingStationData);
this.emit(ChargingStationWorkerMessageEvents.updated, msg.data as ChargingStationData);
break;
case ChargingStationWorkerMessageEvents.performanceStatistics:
- this.workerEventPerformanceStatistics(msg.data as Statistics);
this.emit(
ChargingStationWorkerMessageEvents.performanceStatistics,
msg.data as Statistics,
throw new BaseError(
`Unknown charging station worker event: '${
msg.event
- }' received with data: ${JSON.stringify(msg.data, null, 2)}`,
+ }' received with data: ${JSON.stringify(msg.data, undefined, 2)}`,
);
}
} catch (error) {
};
private workerEventPerformanceStatistics = (data: Statistics) => {
- this.storage.storePerformanceStatistics(data) as void;
+ this.storage?.storePerformanceStatistics(data) as void;
};
private initializeCounters() {
console.warn(
chalk.yellow("'stationTemplateUrls' not defined or empty in configuration, exiting"),
);
- process.exit(exitCodes.missingChargingStationsConfiguration);
+ exit(exitCodes.missingChargingStationsConfiguration);
}
if (this.numberOfChargingStations === 0) {
console.warn(
chalk.yellow('No charging station template enabled in configuration, exiting'),
);
- process.exit(exitCodes.noChargingStationTemplates);
+ exit(exitCodes.noChargingStationTemplates);
}
this.initializedCounters = true;
}
});
}
- private gracefulShutdown = (): void => {
- console.info(`${chalk.green('Graceful shutdown')}`);
+ private gracefulShutdown(): void {
this.stop()
.then(() => {
- process.exit(exitCodes.succeeded);
+ console.info(`${chalk.green('Graceful shutdown')}`);
+ // stop() asks for charging stations to stop by default
+ this.waitChargingStationsStopped()
+ .then(() => {
+ exit(exitCodes.succeeded);
+ })
+ .catch(() => {
+ exit(exitCodes.gracefulShutdownError);
+ });
})
.catch((error) => {
console.error(chalk.red('Error while shutdowning charging stations simulator: '), error);
- process.exit(exitCodes.gracefulShutdownError);
+ exit(exitCodes.gracefulShutdownError);
});
- };
+ }
private logPrefix = (): string => {
return logPrefix(' Bootstrap |');
repositories / e-mobility-charging-stations-simulator.git / blobdiff