src/charging-station/ChargingStation.ts

   1 import { AuthorizationStatus, StartTransactionResponse, StopTransactionReason, StopTransactionResponse } from '../types/ocpp/1.6/Transaction';
   2 import ChargingStationConfiguration, { ConfigurationKey } from '../types/ChargingStationConfiguration';
   3 import ChargingStationTemplate, { PowerOutType } from '../types/ChargingStationTemplate';
   4 import { ConfigurationResponse, DefaultRequestResponse, UnlockResponse } from '../types/ocpp/1.6/RequestResponses';
   5 import Connectors, { Connector } from '../types/Connectors';
   6 import MeterValue, { MeterValueLocation, MeterValueMeasurand, MeterValuePhase, MeterValueUnit } from '../types/ocpp/1.6/MeterValue';
   7 import { PerformanceObserver, performance } from 'perf_hooks';
   8 import WebSocket, { MessageEvent } from 'ws';
   9
  10 import AutomaticTransactionGenerator from './AutomaticTransactionGenerator';
  11 import { ChargePointErrorCode } from '../types/ocpp/1.6/ChargePointErrorCode';
  12 import { ChargePointStatus } from '../types/ocpp/1.6/ChargePointStatus';
  13 import ChargingStationInfo from '../types/ChargingStationInfo';
  14 import Configuration from '../utils/Configuration';
  15 import Constants from '../utils/Constants';
  16 import ElectricUtils from '../utils/ElectricUtils';
  17 import MeasurandValues from '../types/MeasurandValues';
  18 import OCPPError from './OcppError';
  19 import Requests from '../types/ocpp/1.6/Requests';
  20 import Statistics from '../utils/Statistics';
  21 import Utils from '../utils/Utils';
  22 import crypto from 'crypto';
  23 import fs from 'fs';
  24 import logger from '../utils/Logger';
  25
  26 export default class ChargingStation {
  27   private _index: number;
  28   private _stationTemplateFile: string;
  29   private _stationInfo: ChargingStationInfo;
  30   private _bootNotificationMessage: {
  31     chargePointModel: string,
  32     chargePointVendor: string,
  33     chargeBoxSerialNumber?: string,
  34     firmwareVersion?: string,
  35   };
  36
  37   private _connectors: Connectors;
  38   private _configuration: ChargingStationConfiguration;
  39   private _connectorsConfigurationHash: string;
  40   private _supervisionUrl: string;
  41   private _wsConnectionUrl: string;
  42   private _wsConnection: WebSocket;
  43   private _hasStopped: boolean;
  44   private _hasSocketRestarted: boolean;
  45   private _autoReconnectRetryCount: number;
  46   private _autoReconnectMaxRetries: number;
  47   private _autoReconnectTimeout: number;
  48   private _requests: Requests;
  49   private _messageQueue: string[];
  50   private _automaticTransactionGeneration: AutomaticTransactionGenerator;
  51   private _authorizedTags: string[];
  52   private _heartbeatInterval: number;
  53   private _heartbeatSetInterval: NodeJS.Timeout;
  54   private _webSocketPingSetInterval: NodeJS.Timeout;
  55   private _statistics: Statistics;
  56   private _performanceObserver: PerformanceObserver;
  57
  58   constructor(index: number, stationTemplateFile: string) {
  59     this._index = index;
  60     this._stationTemplateFile = stationTemplateFile;
  61     this._connectors = {} as Connectors;
  62     this._initialize();
  63
  64     this._hasStopped = false;
  65     this._hasSocketRestarted = false;
  66     this._autoReconnectRetryCount = 0;
  67     this._autoReconnectMaxRetries = Configuration.getAutoReconnectMaxRetries(); // -1 for unlimited
  68     this._autoReconnectTimeout = Configuration.getAutoReconnectTimeout() * 1000; // Ms, zero for disabling
  69
  70     this._requests = {} as Requests;
  71     this._messageQueue = [] as string[];
  72
  73     this._authorizedTags = this._loadAndGetAuthorizedTags();
  74   }
  75
  76   _getStationName(stationTemplate: ChargingStationTemplate): string {
  77     return stationTemplate.fixedName ? stationTemplate.baseName : stationTemplate.baseName + '-' + ('000000000' + this._index.toString()).substr(('000000000' + this._index.toString()).length - 4);
  78   }
  79
  80   _buildStationInfo(): ChargingStationInfo {
  81     let stationTemplateFromFile: ChargingStationTemplate;
  82     try {
  83       // Load template file
  84       const fileDescriptor = fs.openSync(this._stationTemplateFile, 'r');
  85       stationTemplateFromFile = JSON.parse(fs.readFileSync(fileDescriptor, 'utf8')) as ChargingStationTemplate;
  86       fs.closeSync(fileDescriptor);
  87     } catch (error) {
  88       logger.error('Template file ' + this._stationTemplateFile + ' loading error: %j', error);
  89       throw error;
  90     }
  91     const stationInfo: ChargingStationInfo = stationTemplateFromFile || {} as ChargingStationInfo;
  92     if (!Utils.isEmptyArray(stationTemplateFromFile.power)) {
  93       stationTemplateFromFile.power = stationTemplateFromFile.power as number[];
  94       stationInfo.maxPower = stationTemplateFromFile.power[Math.floor(Math.random() * stationTemplateFromFile.power.length)];
  95     } else {
  96       stationInfo.maxPower = stationTemplateFromFile.power as number;
  97     }
  98     stationInfo.name = this._getStationName(stationTemplateFromFile);
  99     stationInfo.resetTime = stationTemplateFromFile.resetTime ? stationTemplateFromFile.resetTime * 1000 : Constants.CHARGING_STATION_DEFAULT_RESET_TIME;
 100     return stationInfo;
 101   }
 102
 103   get stationInfo(): ChargingStationInfo {
 104     return this._stationInfo;
 105   }
 106
 107   _initialize(): void {
 108     this._stationInfo = this._buildStationInfo();
 109     this._bootNotificationMessage = {
 110       chargePointModel: this._stationInfo.chargePointModel,
 111       chargePointVendor: this._stationInfo.chargePointVendor,
 112       ...!Utils.isUndefined(this._stationInfo.chargeBoxSerialNumberPrefix) && { chargeBoxSerialNumber: this._stationInfo.chargeBoxSerialNumberPrefix },
 113       ...!Utils.isUndefined(this._stationInfo.firmwareVersion) && { firmwareVersion: this._stationInfo.firmwareVersion },
 114     };
 115     this._configuration = this._getTemplateChargingStationConfiguration();
 116     this._supervisionUrl = this._getSupervisionURL();
 117     this._wsConnectionUrl = this._supervisionUrl + '/' + this._stationInfo.name;
 118     // Build connectors if needed
 119     const maxConnectors = this._getMaxNumberOfConnectors();
 120     if (maxConnectors <= 0) {
 121       logger.warn(`${this._logPrefix()} Charging station template ${this._stationTemplateFile} with ${maxConnectors} connectors`);
 122     }
 123     const templateMaxConnectors = this._getTemplateMaxNumberOfConnectors();
 124     if (templateMaxConnectors <= 0) {
 125       logger.warn(`${this._logPrefix()} Charging station template ${this._stationTemplateFile} with no connector configurations`);
 126     }
 127     // Sanity check
 128     if (maxConnectors > (this._stationInfo.Connectors[0] ? templateMaxConnectors - 1 : templateMaxConnectors) && !this._stationInfo.randomConnectors) {
 129       logger.warn(`${this._logPrefix()} Number of connectors exceeds the number of connector configurations in template ${this._stationTemplateFile}, forcing random connector configurations affectation`);
 130       this._stationInfo.randomConnectors = true;
 131     }
 132     const connectorsConfigHash = crypto.createHash('sha256').update(JSON.stringify(this._stationInfo.Connectors) + maxConnectors.toString()).digest('hex');
 133     // FIXME: Handle shrinking the number of connectors
 134     if (!this._connectors || (this._connectors && this._connectorsConfigurationHash !== connectorsConfigHash)) {
 135       this._connectorsConfigurationHash = connectorsConfigHash;
 136       // Add connector Id 0
 137       let lastConnector = '0';
 138       for (lastConnector in this._stationInfo.Connectors) {
 139         if (Utils.convertToInt(lastConnector) === 0 && this._stationInfo.useConnectorId0 && this._stationInfo.Connectors[lastConnector]) {
 140           this._connectors[lastConnector] = Utils.cloneObject(this._stationInfo.Connectors[lastConnector]) as Connector;
 141         }
 142       }
 143       // Generate all connectors
 144       if ((this._stationInfo.Connectors[0] ? templateMaxConnectors - 1 : templateMaxConnectors) > 0) {
 145         for (let index = 1; index <= maxConnectors; index++) {
 146           const randConnectorID = this._stationInfo.randomConnectors ? Utils.getRandomInt(Utils.convertToInt(lastConnector), 1) : index;
 147           this._connectors[index] = Utils.cloneObject(this._stationInfo.Connectors[randConnectorID]) as Connector;
 148         }
 149       }
 150     }
 151     // Avoid duplication of connectors related information
 152     delete this._stationInfo.Connectors;
 153     // Initialize transaction attributes on connectors
 154     for (const connector in this._connectors) {
 155       if (!this.getConnector(Utils.convertToInt(connector)).transactionStarted) {
 156         this._initTransactionOnConnector(Utils.convertToInt(connector));
 157       }
 158     }
 159     // OCPP parameters
 160     this._addConfigurationKey('NumberOfConnectors', this._getNumberOfConnectors().toString(), true);
 161     if (!this._getConfigurationKey('MeterValuesSampledData')) {
 162       this._addConfigurationKey('MeterValuesSampledData', MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER);
 163     }
 164     this._stationInfo.powerDivider = this._getPowerDivider();
 165     if (this.getEnableStatistics()) {
 166       this._statistics = Statistics.getInstance();
 167       this._statistics.objName = this._stationInfo.name;
 168       this._performanceObserver = new PerformanceObserver((list) => {
 169         const entry = list.getEntries()[0];
 170         this._statistics.logPerformance(entry, Constants.ENTITY_CHARGING_STATION);
 171         this._performanceObserver.disconnect();
 172       });
 173     }
 174   }
 175
 176   get connectors(): Connectors {
 177     return this._connectors;
 178   }
 179
 180   get statistics(): Statistics {
 181     return this._statistics;
 182   }
 183
 184   _logPrefix(): string {
 185     return Utils.logPrefix(` ${this._stationInfo.name}:`);
 186   }
 187
 188   _getTemplateChargingStationConfiguration(): ChargingStationConfiguration {
 189     return this._stationInfo.Configuration ? this._stationInfo.Configuration : {} as ChargingStationConfiguration;
 190   }
 191
 192   _getAuthorizationFile(): string {
 193     return this._stationInfo.authorizationFile && this._stationInfo.authorizationFile;
 194   }
 195
 196   _loadAndGetAuthorizedTags(): string[] {
 197     let authorizedTags: string[] = [];
 198     const authorizationFile = this._getAuthorizationFile();
 199     if (authorizationFile) {
 200       try {
 201         // Load authorization file
 202         const fileDescriptor = fs.openSync(authorizationFile, 'r');
 203         authorizedTags = JSON.parse(fs.readFileSync(fileDescriptor, 'utf8')) as string[];
 204         fs.closeSync(fileDescriptor);
 205       } catch (error) {
 206         logger.error(this._logPrefix() + ' Authorization file ' + authorizationFile + ' loading error: %j', error);
 207         throw error;
 208       }
 209     } else {
 210       logger.info(this._logPrefix() + ' No authorization file given in template file ' + this._stationTemplateFile);
 211     }
 212     return authorizedTags;
 213   }
 214
 215   getRandomTagId(): string {
 216     const index = Math.floor(Math.random() * this._authorizedTags.length);
 217     return this._authorizedTags[index];
 218   }
 219
 220   hasAuthorizedTags(): boolean {
 221     return !Utils.isEmptyArray(this._authorizedTags);
 222   }
 223
 224   getEnableStatistics(): boolean {
 225     return !Utils.isUndefined(this._stationInfo.enableStatistics) ? this._stationInfo.enableStatistics : true;
 226   }
 227
 228   _getNumberOfPhases(): number {
 229     switch (this._getPowerOutType()) {
 230       case PowerOutType.AC:
 231         return !Utils.isUndefined(this._stationInfo.numberOfPhases) ? Utils.convertToInt(this._stationInfo.numberOfPhases) : 3;
 232       case PowerOutType.DC:
 233         return 0;
 234     }
 235   }
 236
 237   _getNumberOfRunningTransactions(): number {
 238     let trxCount = 0;
 239     for (const connector in this._connectors) {
 240       if (this.getConnector(Utils.convertToInt(connector)).transactionStarted) {
 241         trxCount++;
 242       }
 243     }
 244     return trxCount;
 245   }
 246
 247   _getPowerDivider(): number {
 248     let powerDivider = this._getNumberOfConnectors();
 249     if (this._stationInfo.powerSharedByConnectors) {
 250       powerDivider = this._getNumberOfRunningTransactions();
 251     }
 252     return powerDivider;
 253   }
 254
 255   getConnector(id: number): Connector {
 256     return this._connectors[id];
 257   }
 258
 259   _getTemplateMaxNumberOfConnectors(): number {
 260     return Object.keys(this._stationInfo.Connectors).length;
 261   }
 262
 263   _getMaxNumberOfConnectors(): number {
 264     let maxConnectors = 0;
 265     if (!Utils.isEmptyArray(this._stationInfo.numberOfConnectors)) {
 266       const numberOfConnectors = this._stationInfo.numberOfConnectors as number[];
 267       // Distribute evenly the number of connectors
 268       maxConnectors = numberOfConnectors[(this._index - 1) % numberOfConnectors.length];
 269     } else if (!Utils.isUndefined(this._stationInfo.numberOfConnectors)) {
 270       maxConnectors = this._stationInfo.numberOfConnectors as number;
 271     } else {
 272       maxConnectors = this._stationInfo.Connectors[0] ? this._getTemplateMaxNumberOfConnectors() - 1 : this._getTemplateMaxNumberOfConnectors();
 273     }
 274     return maxConnectors;
 275   }
 276
 277   _getNumberOfConnectors(): number {
 278     return this._connectors[0] ? Object.keys(this._connectors).length - 1 : Object.keys(this._connectors).length;
 279   }
 280
 281   _getVoltageOut(): number {
 282     const errMsg = `${this._logPrefix()} Unknown ${this._getPowerOutType()} powerOutType in template file ${this._stationTemplateFile}, cannot define default voltage out`;
 283     let defaultVoltageOut: number;
 284     switch (this._getPowerOutType()) {
 285       case PowerOutType.AC:
 286         defaultVoltageOut = 230;
 287         break;
 288       case PowerOutType.DC:
 289         defaultVoltageOut = 400;
 290         break;
 291       default:
 292         logger.error(errMsg);
 293         throw Error(errMsg);
 294     }
 295     return !Utils.isUndefined(this._stationInfo.voltageOut) ? Utils.convertToInt(this._stationInfo.voltageOut) : defaultVoltageOut;
 296   }
 297
 298   _getTransactionidTag(transactionId: number): string {
 299     for (const connector in this._connectors) {
 300       if (this.getConnector(Utils.convertToInt(connector)).transactionId === transactionId) {
 301         return this.getConnector(Utils.convertToInt(connector)).idTag;
 302       }
 303     }
 304   }
 305
 306   _getPowerOutType(): PowerOutType {
 307     return !Utils.isUndefined(this._stationInfo.powerOutType) ? this._stationInfo.powerOutType : PowerOutType.AC;
 308   }
 309
 310   _getSupervisionURL(): string {
 311     const supervisionUrls = Utils.cloneObject(this._stationInfo.supervisionURL ? this._stationInfo.supervisionURL : Configuration.getSupervisionURLs()) as string | string[];
 312     let indexUrl = 0;
 313     if (!Utils.isEmptyArray(supervisionUrls)) {
 314       if (Configuration.getDistributeStationsToTenantsEqually()) {
 315         indexUrl = this._index % supervisionUrls.length;
 316       } else {
 317         // Get a random url
 318         indexUrl = Math.floor(Math.random() * supervisionUrls.length);
 319       }
 320       return supervisionUrls[indexUrl];
 321     }
 322     return supervisionUrls as string;
 323   }
 324
 325   _getAuthorizeRemoteTxRequests(): boolean {
 326     const authorizeRemoteTxRequests = this._getConfigurationKey('AuthorizeRemoteTxRequests');
 327     return authorizeRemoteTxRequests ? Utils.convertToBoolean(authorizeRemoteTxRequests.value) : false;
 328   }
 329
 330   _getLocalAuthListEnabled(): boolean {
 331     const localAuthListEnabled = this._getConfigurationKey('LocalAuthListEnabled');
 332     return localAuthListEnabled ? Utils.convertToBoolean(localAuthListEnabled.value) : false;
 333   }
 334
 335   async _startMessageSequence(): Promise<void> {
 336     // Start WebSocket ping
 337     this._startWebSocketPing();
 338     // Start heartbeat
 339     this._startHeartbeat();
 340     // Initialize connectors status
 341     for (const connector in this._connectors) {
 342       if (!this._hasStopped && !this.getConnector(Utils.convertToInt(connector)).status && this.getConnector(Utils.convertToInt(connector)).bootStatus) {
 343         // Send status in template at startup
 344         await this.sendStatusNotification(Utils.convertToInt(connector), this.getConnector(Utils.convertToInt(connector)).bootStatus);
 345       } else if (this._hasStopped && this.getConnector(Utils.convertToInt(connector)).bootStatus) {
 346         // Send status in template after reset
 347         await this.sendStatusNotification(Utils.convertToInt(connector), this.getConnector(Utils.convertToInt(connector)).bootStatus);
 348       } else if (!this._hasStopped && this.getConnector(Utils.convertToInt(connector)).status) {
 349         // Send previous status at template reload
 350         await this.sendStatusNotification(Utils.convertToInt(connector), this.getConnector(Utils.convertToInt(connector)).status);
 351       } else {
 352         // Send default status
 353         await this.sendStatusNotification(Utils.convertToInt(connector), ChargePointStatus.AVAILABLE);
 354       }
 355     }
 356     // Start the ATG
 357     if (this._stationInfo.AutomaticTransactionGenerator.enable) {
 358       if (!this._automaticTransactionGeneration) {
 359         this._automaticTransactionGeneration = new AutomaticTransactionGenerator(this);
 360       }
 361       if (this._automaticTransactionGeneration.timeToStop) {
 362         this._automaticTransactionGeneration.start();
 363       }
 364     }
 365     if (this.getEnableStatistics()) {
 366       this._statistics.start();
 367     }
 368   }
 369
 370   async _stopMessageSequence(reason: StopTransactionReason = StopTransactionReason.NONE): Promise<void> {
 371     // Stop WebSocket ping
 372     this._stopWebSocketPing();
 373     // Stop heartbeat
 374     this._stopHeartbeat();
 375     // Stop the ATG
 376     if (this._stationInfo.AutomaticTransactionGenerator.enable &&
 377       this._automaticTransactionGeneration &&
 378       !this._automaticTransactionGeneration.timeToStop) {
 379       await this._automaticTransactionGeneration.stop(reason);
 380     } else {
 381       for (const connector in this._connectors) {
 382         if (this.getConnector(Utils.convertToInt(connector)).transactionStarted) {
 383           await this.sendStopTransaction(this.getConnector(Utils.convertToInt(connector)).transactionId, reason);
 384         }
 385       }
 386     }
 387   }
 388
 389   _startWebSocketPing(): void {
 390     const webSocketPingInterval: number = this._getConfigurationKey('WebSocketPingInterval') ? Utils.convertToInt(this._getConfigurationKey('WebSocketPingInterval').value) : 0;
 391     if (webSocketPingInterval > 0 && !this._webSocketPingSetInterval) {
 392       this._webSocketPingSetInterval = setInterval(() => {
 393         if (this._wsConnection?.readyState === WebSocket.OPEN) {
 394           this._wsConnection.ping((): void => {});
 395         }
 396       }, webSocketPingInterval * 1000);
 397       logger.info(this._logPrefix() + ' WebSocket ping started every ' + Utils.secondsToHHMMSS(webSocketPingInterval));
 398     } else if (this._webSocketPingSetInterval) {
 399       logger.info(this._logPrefix() + ' WebSocket ping every ' + Utils.secondsToHHMMSS(webSocketPingInterval) + ' already started');
 400     } else {
 401       logger.error(`${this._logPrefix()} WebSocket ping interval set to ${webSocketPingInterval ? Utils.secondsToHHMMSS(webSocketPingInterval) : webSocketPingInterval}, not starting the WebSocket ping`);
 402     }
 403   }
 404
 405   _stopWebSocketPing(): void {
 406     if (this._webSocketPingSetInterval) {
 407       clearInterval(this._webSocketPingSetInterval);
 408       this._webSocketPingSetInterval = null;
 409     }
 410   }
 411
 412   _restartWebSocketPing(): void {
 413     // Stop WebSocket ping
 414     this._stopWebSocketPing();
 415     // Start WebSocket ping
 416     this._startWebSocketPing();
 417   }
 418
 419   _startHeartbeat(): void {
 420     if (this._heartbeatInterval && this._heartbeatInterval > 0 && !this._heartbeatSetInterval) {
 421       this._heartbeatSetInterval = setInterval(async () => {
 422         await this.sendHeartbeat();
 423       }, this._heartbeatInterval);
 424       logger.info(this._logPrefix() + ' Heartbeat started every ' + Utils.milliSecondsToHHMMSS(this._heartbeatInterval));
 425     } else if (this._heartbeatSetInterval) {
 426       logger.info(this._logPrefix() + ' Heartbeat every ' + Utils.milliSecondsToHHMMSS(this._heartbeatInterval) + ' already started');
 427     } else {
 428       logger.error(`${this._logPrefix()} Heartbeat interval set to ${this._heartbeatInterval ? Utils.milliSecondsToHHMMSS(this._heartbeatInterval) : this._heartbeatInterval}, not starting the heartbeat`);
 429     }
 430   }
 431
 432   _stopHeartbeat(): void {
 433     if (this._heartbeatSetInterval) {
 434       clearInterval(this._heartbeatSetInterval);
 435       this._heartbeatSetInterval = null;
 436     }
 437   }
 438
 439   _restartHeartbeat(): void {
 440     // Stop heartbeat
 441     this._stopHeartbeat();
 442     // Start heartbeat
 443     this._startHeartbeat();
 444   }
 445
 446   _startAuthorizationFileMonitoring(): void {
 447     // eslint-disable-next-line @typescript-eslint/no-unused-vars
 448     fs.watchFile(this._getAuthorizationFile(), (current, previous) => {
 449       try {
 450         logger.debug(this._logPrefix() + ' Authorization file ' + this._getAuthorizationFile() + ' have changed, reload');
 451         // Initialize _authorizedTags
 452         this._authorizedTags = this._loadAndGetAuthorizedTags();
 453       } catch (error) {
 454         logger.error(this._logPrefix() + ' Authorization file monitoring error: %j', error);
 455       }
 456     });
 457   }
 458
 459   _startStationTemplateFileMonitoring(): void {
 460     // eslint-disable-next-line @typescript-eslint/no-unused-vars
 461     fs.watchFile(this._stationTemplateFile, (current, previous) => {
 462       try {
 463         logger.debug(this._logPrefix() + ' Template file ' + this._stationTemplateFile + ' have changed, reload');
 464         // Initialize
 465         this._initialize();
 466         if (!this._stationInfo.AutomaticTransactionGenerator.enable &&
 467           this._automaticTransactionGeneration) {
 468           this._automaticTransactionGeneration.stop().catch(() => { });
 469         }
 470         // FIXME?: restart heartbeat and WebSocket ping when their interval values have changed
 471       } catch (error) {
 472         logger.error(this._logPrefix() + ' Charging station template file monitoring error: %j', error);
 473       }
 474     });
 475   }
 476
 477   _startMeterValues(connectorId: number, interval: number): void {
 478     if (!this.getConnector(connectorId).transactionStarted) {
 479       logger.error(`${this._logPrefix()} Trying to start MeterValues on connector Id ${connectorId} with no transaction started`);
 480       return;
 481     } else if (this.getConnector(connectorId).transactionStarted && !this.getConnector(connectorId).transactionId) {
 482       logger.error(`${this._logPrefix()} Trying to start MeterValues on connector Id ${connectorId} with no transaction id`);
 483       return;
 484     }
 485     if (interval > 0) {
 486       this.getConnector(connectorId).transactionSetInterval = setInterval(async () => {
 487         if (this.getEnableStatistics()) {
 488           const sendMeterValues = performance.timerify(this.sendMeterValues);
 489           this._performanceObserver.observe({
 490             entryTypes: ['function'],
 491           });
 492           await sendMeterValues(connectorId, interval, this);
 493         } else {
 494           await this.sendMeterValues(connectorId, interval, this);
 495         }
 496       }, interval);
 497     } else {
 498       logger.error(`${this._logPrefix()} Charging station MeterValueSampleInterval configuration set to ${Utils.milliSecondsToHHMMSS(interval)}, not sending MeterValues`);
 499     }
 500   }
 501
 502   _openWSConnection(): void {
 503     this._wsConnection = new WebSocket(this._wsConnectionUrl, 'ocpp' + Constants.OCPP_VERSION_16);
 504     logger.info(this._logPrefix() + ' Will communicate through URL ' + this._supervisionUrl);
 505   }
 506
 507   start(): void {
 508     this._openWSConnection();
 509     // Monitor authorization file
 510     this._startAuthorizationFileMonitoring();
 511     // Monitor station template file
 512     this._startStationTemplateFileMonitoring();
 513     // Handle Socket incoming messages
 514     this._wsConnection.on('message', this.onMessage.bind(this));
 515     // Handle Socket error
 516     this._wsConnection.on('error', this.onError.bind(this));
 517     // Handle Socket close
 518     this._wsConnection.on('close', this.onClose.bind(this));
 519     // Handle Socket opening connection
 520     this._wsConnection.on('open', this.onOpen.bind(this));
 521     // Handle Socket ping
 522     this._wsConnection.on('ping', this.onPing.bind(this));
 523     // Handle Socket pong
 524     this._wsConnection.on('pong', this.onPong.bind(this));
 525   }
 526
 527   async stop(reason: StopTransactionReason = StopTransactionReason.NONE): Promise<void> {
 528     // Stop message sequence
 529     await this._stopMessageSequence(reason);
 530     // eslint-disable-next-line guard-for-in
 531     for (const connector in this._connectors) {
 532       await this.sendStatusNotification(Utils.convertToInt(connector), ChargePointStatus.UNAVAILABLE);
 533     }
 534     if (this._wsConnection?.readyState === WebSocket.OPEN) {
 535       this._wsConnection.close();
 536     }
 537     this._hasStopped = true;
 538   }
 539
 540   _reconnect(error): void {
 541     logger.error(this._logPrefix() + ' Socket: abnormally closed: %j', error);
 542     // Stop heartbeat
 543     this._stopHeartbeat();
 544     // Stop the ATG if needed
 545     if (this._stationInfo.AutomaticTransactionGenerator.enable &&
 546       this._stationInfo.AutomaticTransactionGenerator.stopOnConnectionFailure &&
 547       this._automaticTransactionGeneration &&
 548       !this._automaticTransactionGeneration.timeToStop) {
 549       this._automaticTransactionGeneration.stop().catch(() => { });
 550     }
 551     if (this._autoReconnectTimeout !== 0 &&
 552       (this._autoReconnectRetryCount < this._autoReconnectMaxRetries || this._autoReconnectMaxRetries === -1)) {
 553       logger.error(`${this._logPrefix()} Socket: connection retry with timeout ${this._autoReconnectTimeout}ms`);
 554       this._autoReconnectRetryCount++;
 555       setTimeout(() => {
 556         logger.error(this._logPrefix() + ' Socket: reconnecting try #' + this._autoReconnectRetryCount.toString());
 557         this._openWSConnection();
 558       }, this._autoReconnectTimeout);
 559     } else if (this._autoReconnectTimeout !== 0 || this._autoReconnectMaxRetries !== -1) {
 560       logger.error(`${this._logPrefix()} Socket: max retries reached (${this._autoReconnectRetryCount}) or retry disabled (${this._autoReconnectTimeout})`);
 561     }
 562   }
 563
 564   async onOpen(): Promise<void> {
 565     logger.info(`${this._logPrefix()} Is connected to server through ${this._wsConnectionUrl}`);
 566     if (!this._hasSocketRestarted || this._hasStopped) {
 567       // Send BootNotification
 568       await this.sendBootNotification();
 569     }
 570     await this._startMessageSequence();
 571     if (this._hasSocketRestarted) {
 572       if (!Utils.isEmptyArray(this._messageQueue)) {
 573         this._messageQueue.forEach((message, index) => {
 574           if (this._wsConnection?.readyState === WebSocket.OPEN) {
 575             this._messageQueue.splice(index, 1);
 576             this._wsConnection.send(message);
 577           }
 578         });
 579       }
 580     }
 581     this._hasSocketRestarted = false;
 582     this._autoReconnectRetryCount = 0;
 583   }
 584
 585   onError(errorEvent): void {
 586     switch (errorEvent.code) {
 587       case 'ECONNREFUSED':
 588         this._hasSocketRestarted = true;
 589         this._reconnect(errorEvent);
 590         break;
 591       default:
 592         logger.error(this._logPrefix() + ' Socket error: %j', errorEvent);
 593         break;
 594     }
 595   }
 596
 597   onClose(closeEvent): void {
 598     switch (closeEvent) {
 599       case 1000: // Normal close
 600       case 1005:
 601         logger.info(this._logPrefix() + ' Socket normally closed: %j', closeEvent);
 602         this._autoReconnectRetryCount = 0;
 603         break;
 604       default: // Abnormal close
 605         this._hasSocketRestarted = true;
 606         this._reconnect(closeEvent);
 607         break;
 608     }
 609   }
 610
 611   onPing(): void {
 612     logger.debug(this._logPrefix() + ' Has received a WS ping (rfc6455) from the server');
 613   }
 614
 615   onPong(): void {
 616     logger.debug(this._logPrefix() + ' Has received a WS pong (rfc6455) from the server');
 617   }
 618
 619   async onMessage(messageEvent: MessageEvent): Promise<void> {
 620     let [messageType, messageId, commandName, commandPayload, errorDetails] = [0, '', Constants.ENTITY_CHARGING_STATION, '', ''];
 621     try {
 622       // Parse the message
 623       [messageType, messageId, commandName, commandPayload, errorDetails] = JSON.parse(messageEvent.toString());
 624
 625       // Check the Type of message
 626       switch (messageType) {
 627         // Incoming Message
 628         case Constants.OCPP_JSON_CALL_MESSAGE:
 629           if (this.getEnableStatistics()) {
 630             this._statistics.addMessage(commandName, messageType);
 631           }
 632           // Process the call
 633           await this.handleRequest(messageId, commandName, commandPayload);
 634           break;
 635         // Outcome Message
 636         case Constants.OCPP_JSON_CALL_RESULT_MESSAGE:
 637           // Respond
 638           // eslint-disable-next-line no-case-declarations
 639           let responseCallback; let requestPayload;
 640           if (Utils.isIterable(this._requests[messageId])) {
 641             [responseCallback, , requestPayload] = this._requests[messageId];
 642           } else {
 643             throw new Error(`Response request for message id ${messageId} is not iterable`);
 644           }
 645           if (!responseCallback) {
 646             // Error
 647             throw new Error(`Response request for unknown message id ${messageId}`);
 648           }
 649           delete this._requests[messageId];
 650           responseCallback(commandName, requestPayload);
 651           break;
 652         // Error Message
 653         case Constants.OCPP_JSON_CALL_ERROR_MESSAGE:
 654           if (!this._requests[messageId]) {
 655             // Error
 656             throw new Error(`Error request for unknown message id ${messageId}`);
 657           }
 658           // eslint-disable-next-line no-case-declarations
 659           let rejectCallback;
 660           if (Utils.isIterable(this._requests[messageId])) {
 661             [, rejectCallback] = this._requests[messageId];
 662           } else {
 663             throw new Error(`Error request for message id ${messageId} is not iterable`);
 664           }
 665           delete this._requests[messageId];
 666           rejectCallback(new OCPPError(commandName, commandPayload, errorDetails));
 667           break;
 668         // Error
 669         default:
 670           // eslint-disable-next-line no-case-declarations
 671           const errMsg = `${this._logPrefix()} Wrong message type ${messageType}`;
 672           logger.error(errMsg);
 673           throw new Error(errMsg);
 674       }
 675     } catch (error) {
 676       // Log
 677       logger.error('%s Incoming message %j processing error %s on request content type %s', this._logPrefix(), messageEvent, error, this._requests[messageId]);
 678       // Send error
 679       messageType !== Constants.OCPP_JSON_CALL_ERROR_MESSAGE && await this.sendError(messageId, error, commandName);
 680     }
 681   }
 682
 683   async sendHeartbeat(): Promise<void> {
 684     try {
 685       const payload = {
 686         currentTime: new Date().toISOString(),
 687       };
 688       await this.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'Heartbeat');
 689     } catch (error) {
 690       logger.error(this._logPrefix() + ' Send Heartbeat error: %j', error);
 691       throw error;
 692     }
 693   }
 694
 695   async sendBootNotification(): Promise<void> {
 696     try {
 697       await this.sendMessage(Utils.generateUUID(), this._bootNotificationMessage, Constants.OCPP_JSON_CALL_MESSAGE, 'BootNotification');
 698     } catch (error) {
 699       logger.error(this._logPrefix() + ' Send BootNotification error: %j', error);
 700       throw error;
 701     }
 702   }
 703
 704   async sendStatusNotification(connectorId: number, status: ChargePointStatus, errorCode: ChargePointErrorCode = ChargePointErrorCode.NO_ERROR): Promise<void> {
 705     this.getConnector(connectorId).status = status;
 706     try {
 707       const payload = {
 708         connectorId,
 709         errorCode,
 710         status,
 711       };
 712       await this.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'StatusNotification');
 713     } catch (error) {
 714       logger.error(this._logPrefix() + ' Send StatusNotification error: %j', error);
 715       throw error;
 716     }
 717   }
 718
 719   async sendStartTransaction(connectorId: number, idTag?: string): Promise<StartTransactionResponse> {
 720     try {
 721       const payload = {
 722         connectorId,
 723         ...!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.TRANSACTION_DEFAULT_IDTAG },
 724         meterStart: 0,
 725         timestamp: new Date().toISOString(),
 726       };
 727       return await this.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'StartTransaction') as StartTransactionResponse;
 728     } catch (error) {
 729       logger.error(this._logPrefix() + ' Send StartTransaction error: %j', error);
 730       throw error;
 731     }
 732   }
 733
 734   async sendStopTransaction(transactionId: number, reason: StopTransactionReason = StopTransactionReason.NONE): Promise<StopTransactionResponse> {
 735     const idTag = this._getTransactionidTag(transactionId);
 736     try {
 737       const payload = {
 738         transactionId,
 739         ...!Utils.isUndefined(idTag) && { idTag: idTag },
 740         meterStop: 0,
 741         timestamp: new Date().toISOString(),
 742         ...reason && { reason },
 743       };
 744       return await this.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'StopTransaction') as StartTransactionResponse;
 745     } catch (error) {
 746       logger.error(this._logPrefix() + ' Send StopTransaction error: %j', error);
 747       throw error;
 748     }
 749   }
 750
 751   // eslint-disable-next-line consistent-this
 752   async sendMeterValues(connectorId: number, interval: number, self: ChargingStation, debug = false): Promise<void> {
 753     try {
 754       const sampledValues: {
 755         timestamp: string;
 756         sampledValue: MeterValue[];
 757       } = {
 758         timestamp: new Date().toISOString(),
 759         sampledValue: [],
 760       };
 761       const meterValuesTemplate = self.getConnector(connectorId).MeterValues;
 762       for (let index = 0; index < meterValuesTemplate.length; index++) {
 763         const connector = self.getConnector(connectorId);
 764         // SoC measurand
 765         if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.STATE_OF_CHARGE && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.STATE_OF_CHARGE)) {
 766           sampledValues.sampledValue.push({
 767             ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.PERCENT },
 768             ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 769             measurand: meterValuesTemplate[index].measurand,
 770             ...!Utils.isUndefined(meterValuesTemplate[index].location) ? { location: meterValuesTemplate[index].location } : { location: MeterValueLocation.EV },
 771             ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: Utils.getRandomInt(100).toString() },
 772           });
 773           const sampledValuesIndex = sampledValues.sampledValue.length - 1;
 774           if (Utils.convertToInt(sampledValues.sampledValue[sampledValuesIndex].value) > 100 || debug) {
 775             logger.error(`${self._logPrefix()} MeterValues measurand ${sampledValues.sampledValue[sampledValuesIndex].measurand ? sampledValues.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${sampledValues.sampledValue[sampledValuesIndex].value}/100`);
 776           }
 777         // Voltage measurand
 778         } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.VOLTAGE && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.VOLTAGE)) {
 779           const voltageMeasurandValue = Utils.getRandomFloatRounded(self._getVoltageOut() + self._getVoltageOut() * 0.1, self._getVoltageOut() - self._getVoltageOut() * 0.1);
 780           sampledValues.sampledValue.push({
 781             ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.VOLT },
 782             ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 783             measurand: meterValuesTemplate[index].measurand,
 784             ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
 785             ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: voltageMeasurandValue.toString() },
 786           });
 787           for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
 788             const voltageValue = Utils.convertToFloat(sampledValues.sampledValue[sampledValues.sampledValue.length - 1].value);
 789             let phaseValue: string;
 790             if (voltageValue >= 0 && voltageValue <= 250) {
 791               phaseValue = `L${phase}-N`;
 792             } else if (voltageValue > 250) {
 793               phaseValue = `L${phase}-L${(phase + 1) % self._getNumberOfPhases() !== 0 ? (phase + 1) % self._getNumberOfPhases() : self._getNumberOfPhases()}`;
 794             }
 795             sampledValues.sampledValue.push({
 796               ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.VOLT },
 797               ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 798               measurand: meterValuesTemplate[index].measurand,
 799               ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
 800               ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: voltageMeasurandValue.toString() },
 801               phase: phaseValue as MeterValuePhase,
 802             });
 803           }
 804         // Power.Active.Import measurand
 805         } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.POWER_ACTIVE_IMPORT && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.POWER_ACTIVE_IMPORT)) {
 806           // FIXME: factor out powerDivider checks
 807           if (Utils.isUndefined(self._stationInfo.powerDivider)) {
 808             const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
 809             logger.error(errMsg);
 810             throw Error(errMsg);
 811           } else if (self._stationInfo.powerDivider && self._stationInfo.powerDivider <= 0) {
 812             const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self._stationInfo.powerDivider}`;
 813             logger.error(errMsg);
 814             throw Error(errMsg);
 815           }
 816           const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${self._getPowerOutType()} powerOutType in template file ${self._stationTemplateFile}, cannot calculate ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
 817           const powerMeasurandValues = {} as MeasurandValues;
 818           const maxPower = Math.round(self._stationInfo.maxPower / self._stationInfo.powerDivider);
 819           const maxPowerPerPhase = Math.round((self._stationInfo.maxPower / self._stationInfo.powerDivider) / self._getNumberOfPhases());
 820           switch (self._getPowerOutType()) {
 821             case PowerOutType.AC:
 822               if (Utils.isUndefined(meterValuesTemplate[index].value)) {
 823                 powerMeasurandValues.L1 = Utils.getRandomFloatRounded(maxPowerPerPhase);
 824                 powerMeasurandValues.L2 = 0;
 825                 powerMeasurandValues.L3 = 0;
 826                 if (self._getNumberOfPhases() === 3) {
 827                   powerMeasurandValues.L2 = Utils.getRandomFloatRounded(maxPowerPerPhase);
 828                   powerMeasurandValues.L3 = Utils.getRandomFloatRounded(maxPowerPerPhase);
 829                 }
 830                 powerMeasurandValues.allPhases = Utils.roundTo(powerMeasurandValues.L1 + powerMeasurandValues.L2 + powerMeasurandValues.L3, 2);
 831               }
 832               break;
 833             case PowerOutType.DC:
 834               if (Utils.isUndefined(meterValuesTemplate[index].value)) {
 835                 powerMeasurandValues.allPhases = Utils.getRandomFloatRounded(maxPower);
 836               }
 837               break;
 838             default:
 839               logger.error(errMsg);
 840               throw Error(errMsg);
 841           }
 842           sampledValues.sampledValue.push({
 843             ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT },
 844             ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 845             measurand: meterValuesTemplate[index].measurand,
 846             ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
 847             ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: powerMeasurandValues.allPhases.toString() },
 848           });
 849           const sampledValuesIndex = sampledValues.sampledValue.length - 1;
 850           if (Utils.convertToFloat(sampledValues.sampledValue[sampledValuesIndex].value) > maxPower || debug) {
 851             logger.error(`${self._logPrefix()} MeterValues measurand ${sampledValues.sampledValue[sampledValuesIndex].measurand ? sampledValues.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${sampledValues.sampledValue[sampledValuesIndex].value}/${maxPower}`);
 852           }
 853           for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
 854             const phaseValue = `L${phase}-N`;
 855             sampledValues.sampledValue.push({
 856               ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT },
 857               ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 858               ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
 859               ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
 860               ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: powerMeasurandValues[`L${phase}`] as string },
 861               phase: phaseValue as MeterValuePhase,
 862             });
 863           }
 864         // Current.Import measurand
 865         } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.CURRENT_IMPORT && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.CURRENT_IMPORT)) {
 866           // FIXME: factor out powerDivider checks
 867           if (Utils.isUndefined(self._stationInfo.powerDivider)) {
 868             const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
 869             logger.error(errMsg);
 870             throw Error(errMsg);
 871           } else if (self._stationInfo.powerDivider && self._stationInfo.powerDivider <= 0) {
 872             const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self._stationInfo.powerDivider}`;
 873             logger.error(errMsg);
 874             throw Error(errMsg);
 875           }
 876           const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${self._getPowerOutType()} powerOutType in template file ${self._stationTemplateFile}, cannot calculate ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
 877           const currentMeasurandValues: MeasurandValues = {} as MeasurandValues;
 878           let maxAmperage: number;
 879           switch (self._getPowerOutType()) {
 880             case PowerOutType.AC:
 881               maxAmperage = ElectricUtils.ampPerPhaseFromPower(self._getNumberOfPhases(), self._stationInfo.maxPower / self._stationInfo.powerDivider, self._getVoltageOut());
 882               if (Utils.isUndefined(meterValuesTemplate[index].value)) {
 883                 currentMeasurandValues.L1 = Utils.getRandomFloatRounded(maxAmperage);
 884                 currentMeasurandValues.L2 = 0;
 885                 currentMeasurandValues.L3 = 0;
 886                 if (self._getNumberOfPhases() === 3) {
 887                   currentMeasurandValues.L2 = Utils.getRandomFloatRounded(maxAmperage);
 888                   currentMeasurandValues.L3 = Utils.getRandomFloatRounded(maxAmperage);
 889                 }
 890                 currentMeasurandValues.allPhases = Utils.roundTo((currentMeasurandValues.L1 + currentMeasurandValues.L2 + currentMeasurandValues.L3) / self._getNumberOfPhases(), 2);
 891               }
 892               break;
 893             case PowerOutType.DC:
 894               maxAmperage = ElectricUtils.ampTotalFromPower(self._stationInfo.maxPower / self._stationInfo.powerDivider, self._getVoltageOut());
 895               if (Utils.isUndefined(meterValuesTemplate[index].value)) {
 896                 currentMeasurandValues.allPhases = Utils.getRandomFloatRounded(maxAmperage);
 897               }
 898               break;
 899             default:
 900               logger.error(errMsg);
 901               throw Error(errMsg);
 902           }
 903           sampledValues.sampledValue.push({
 904             ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.AMP },
 905             ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 906             measurand: meterValuesTemplate[index].measurand,
 907             ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
 908             ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: currentMeasurandValues.allPhases.toString() },
 909           });
 910           const sampledValuesIndex = sampledValues.sampledValue.length - 1;
 911           if (Utils.convertToFloat(sampledValues.sampledValue[sampledValuesIndex].value) > maxAmperage || debug) {
 912             logger.error(`${self._logPrefix()} MeterValues measurand ${sampledValues.sampledValue[sampledValuesIndex].measurand ? sampledValues.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${sampledValues.sampledValue[sampledValuesIndex].value}/${maxAmperage}`);
 913           }
 914           for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
 915             const phaseValue = `L${phase}`;
 916             sampledValues.sampledValue.push({
 917               ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.AMP },
 918               ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 919               ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
 920               ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
 921               ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: currentMeasurandValues[phaseValue] as string },
 922               phase: phaseValue as MeterValuePhase,
 923             });
 924           }
 925         // Energy.Active.Import.Register measurand (default)
 926         } else if (!meterValuesTemplate[index].measurand || meterValuesTemplate[index].measurand === MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER) {
 927           // FIXME: factor out powerDivider checks
 928           if (Utils.isUndefined(self._stationInfo.powerDivider)) {
 929             const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
 930             logger.error(errMsg);
 931             throw Error(errMsg);
 932           } else if (self._stationInfo.powerDivider && self._stationInfo.powerDivider <= 0) {
 933             const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self._stationInfo.powerDivider}`;
 934             logger.error(errMsg);
 935             throw Error(errMsg);
 936           }
 937           if (Utils.isUndefined(meterValuesTemplate[index].value)) {
 938             const measurandValue = Utils.getRandomInt(self._stationInfo.maxPower / (self._stationInfo.powerDivider * 3600000) * interval);
 939             // Persist previous value in connector
 940             if (connector && !Utils.isNullOrUndefined(connector.lastEnergyActiveImportRegisterValue) && connector.lastEnergyActiveImportRegisterValue >= 0) {
 941               connector.lastEnergyActiveImportRegisterValue += measurandValue;
 942             } else {
 943               connector.lastEnergyActiveImportRegisterValue = 0;
 944             }
 945           }
 946           sampledValues.sampledValue.push({
 947             ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT_HOUR },
 948             ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
 949             ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
 950             ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
 951             ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } :
 952               { value: connector.lastEnergyActiveImportRegisterValue.toString() },
 953           });
 954           const sampledValuesIndex = sampledValues.sampledValue.length - 1;
 955           const maxConsumption = Math.round(self._stationInfo.maxPower * 3600 / (self._stationInfo.powerDivider * interval));
 956           if (Utils.convertToFloat(sampledValues.sampledValue[sampledValuesIndex].value) > maxConsumption || debug) {
 957             logger.error(`${self._logPrefix()} MeterValues measurand ${sampledValues.sampledValue[sampledValuesIndex].measurand ? sampledValues.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${sampledValues.sampledValue[sampledValuesIndex].value}/${maxConsumption}`);
 958           }
 959         // Unsupported measurand
 960         } else {
 961           logger.info(`${self._logPrefix()} Unsupported MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} on connectorId ${connectorId}`);
 962         }
 963       }
 964
 965       const payload = {
 966         connectorId,
 967         transactionId: self.getConnector(connectorId).transactionId,
 968         meterValue: sampledValues,
 969       };
 970       await self.sendMessage(Utils.generateUUID(), payload, Constants.OCPP_JSON_CALL_MESSAGE, 'MeterValues');
 971     } catch (error) {
 972       logger.error(self._logPrefix() + ' Send MeterValues error: %j', error);
 973       throw error;
 974     }
 975   }
 976
 977   async sendError(messageId: string, err: Error | OCPPError, commandName: string): Promise<unknown> {
 978     // Check exception type: only OCPP error are accepted
 979     const error = err instanceof OCPPError ? err : new OCPPError(Constants.OCPP_ERROR_INTERNAL_ERROR, err.message, err.stack && err.stack);
 980     // Send error
 981     return this.sendMessage(messageId, error, Constants.OCPP_JSON_CALL_ERROR_MESSAGE, commandName);
 982   }
 983
 984   async sendMessage(messageId: string, commandParams, messageType = Constants.OCPP_JSON_CALL_RESULT_MESSAGE, commandName: string): Promise<any> {
 985     // eslint-disable-next-line @typescript-eslint/no-this-alias
 986     const self = this;
 987     // Send a message through wsConnection
 988     return new Promise((resolve, reject) => {
 989       let messageToSend;
 990       // Type of message
 991       switch (messageType) {
 992         // Request
 993         case Constants.OCPP_JSON_CALL_MESSAGE:
 994           // Build request
 995           this._requests[messageId] = [responseCallback, rejectCallback, commandParams];
 996           messageToSend = JSON.stringify([messageType, messageId, commandName, commandParams]);
 997           break;
 998         // Response
 999         case Constants.OCPP_JSON_CALL_RESULT_MESSAGE:
1000           // Build response
1001           messageToSend = JSON.stringify([messageType, messageId, commandParams]);
1002           break;
1003         // Error Message
1004         case Constants.OCPP_JSON_CALL_ERROR_MESSAGE:
1005           // Build Error Message
1006           messageToSend = JSON.stringify([messageType, messageId, commandParams.code ? commandParams.code : Constants.OCPP_ERROR_GENERIC_ERROR, commandParams.message ? commandParams.message : '', commandParams.details ? commandParams.details : {}]);
1007           break;
1008       }
1009       // Check if wsConnection is ready
1010       if (this._wsConnection?.readyState === WebSocket.OPEN) {
1011         if (this.getEnableStatistics()) {
1012           this._statistics.addMessage(commandName, messageType);
1013         }
1014         // Yes: Send Message
1015         this._wsConnection.send(messageToSend);
1016       } else {
1017         let dups = false;
1018         // Handle dups in buffer
1019         for (const message of this._messageQueue) {
1020           // Same message
1021           if (JSON.stringify(messageToSend) === JSON.stringify(message)) {
1022             dups = true;
1023             break;
1024           }
1025         }
1026         if (!dups) {
1027           // Buffer message
1028           this._messageQueue.push(messageToSend);
1029         }
1030         // Reject it
1031         return rejectCallback(new OCPPError(commandParams.code ? commandParams.code : Constants.OCPP_ERROR_GENERIC_ERROR, commandParams.message ? commandParams.message : `WebSocket closed for message id '${messageId}' with content '${messageToSend}', message buffered`, commandParams.details ? commandParams.details : {}));
1032       }
1033       // Response?
1034       if (messageType === Constants.OCPP_JSON_CALL_RESULT_MESSAGE) {
1035         // Yes: send Ok
1036         resolve();
1037       } else if (messageType === Constants.OCPP_JSON_CALL_ERROR_MESSAGE) {
1038         // Send timeout
1039         setTimeout(() => rejectCallback(new OCPPError(commandParams.code ? commandParams.code : Constants.OCPP_ERROR_GENERIC_ERROR, commandParams.message ? commandParams.message : `Timeout for message id '${messageId}' with content '${messageToSend}'`, commandParams.details ? commandParams.details : {})), Constants.OCPP_SOCKET_TIMEOUT);
1040       }
1041
1042       // Function that will receive the request's response
1043       function responseCallback(payload, requestPayload): void {
1044         if (self.getEnableStatistics()) {
1045           self._statistics.addMessage(commandName, messageType);
1046         }
1047         // Send the response
1048         self.handleResponse(commandName, payload, requestPayload);
1049         resolve(payload);
1050       }
1051
1052       // Function that will receive the request's rejection
1053       function rejectCallback(error: OCPPError): void {
1054         if (self.getEnableStatistics()) {
1055           self._statistics.addMessage(commandName, messageType);
1056         }
1057         logger.debug(`${self._logPrefix()} Error: %j occurred when calling command %s with parameters: %j`, error, commandName, commandParams);
1058         // Build Exception
1059         // eslint-disable-next-line no-empty-function
1060         self._requests[messageId] = [() => { }, () => { }, {}]; // Properly format the request
1061         // Send error
1062         reject(error);
1063       }
1064     });
1065   }
1066
1067   handleResponse(commandName: string, payload, requestPayload): void {
1068     const responseCallbackFn = 'handleResponse' + commandName;
1069     if (typeof this[responseCallbackFn] === 'function') {
1070       this[responseCallbackFn](payload, requestPayload);
1071     } else {
1072       logger.error(this._logPrefix() + ' Trying to call an undefined response callback function: ' + responseCallbackFn);
1073     }
1074   }
1075
1076   handleResponseBootNotification(payload, requestPayload): void {
1077     if (payload.status === 'Accepted') {
1078       this._heartbeatInterval = Utils.convertToInt(payload.interval) * 1000;
1079       this._heartbeatSetInterval ? this._restartHeartbeat() : this._startHeartbeat();
1080       this._addConfigurationKey('HeartBeatInterval', payload.interval);
1081       this._addConfigurationKey('HeartbeatInterval', payload.interval, false, false);
1082       this._hasStopped && (this._hasStopped = false);
1083     } else if (payload.status === 'Pending') {
1084       logger.info(this._logPrefix() + ' Charging station in pending state on the central server');
1085     } else {
1086       logger.info(this._logPrefix() + ' Charging station rejected by the central server');
1087     }
1088   }
1089
1090   _initTransactionOnConnector(connectorId: number): void {
1091     this.getConnector(connectorId).transactionStarted = false;
1092     this.getConnector(connectorId).transactionId = null;
1093     this.getConnector(connectorId).idTag = null;
1094     this.getConnector(connectorId).lastEnergyActiveImportRegisterValue = -1;
1095   }
1096
1097   _resetTransactionOnConnector(connectorId: number): void {
1098     this._initTransactionOnConnector(connectorId);
1099     if (this.getConnector(connectorId).transactionSetInterval) {
1100       clearInterval(this.getConnector(connectorId).transactionSetInterval);
1101     }
1102   }
1103
1104   handleResponseStartTransaction(payload: StartTransactionResponse, requestPayload): void {
1105     const connectorId = Utils.convertToInt(requestPayload.connectorId);
1106     if (this.getConnector(connectorId).transactionStarted) {
1107       logger.debug(this._logPrefix() + ' Trying to start a transaction on an already used connector ' + connectorId.toString() + ': %j', this.getConnector(connectorId));
1108       return;
1109     }
1110
1111     let transactionConnectorId: number;
1112     for (const connector in this._connectors) {
1113       if (Utils.convertToInt(connector) === connectorId) {
1114         transactionConnectorId = Utils.convertToInt(connector);
1115         break;
1116       }
1117     }
1118     if (!transactionConnectorId) {
1119       logger.error(this._logPrefix() + ' Trying to start a transaction on a non existing connector Id ' + connectorId.toString());
1120       return;
1121     }
1122     if (payload.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
1123       this.getConnector(connectorId).transactionStarted = true;
1124       this.getConnector(connectorId).transactionId = payload.transactionId;
1125       this.getConnector(connectorId).idTag = requestPayload.idTag;
1126       this.getConnector(connectorId).lastEnergyActiveImportRegisterValue = 0;
1127       this.sendStatusNotification(connectorId, ChargePointStatus.CHARGING).catch(() => { });
1128       logger.info(this._logPrefix() + ' Transaction ' + payload.transactionId.toString() + ' STARTED on ' + this._stationInfo.name + '#' + connectorId.toString() + ' for idTag ' + requestPayload.idTag);
1129       if (this._stationInfo.powerSharedByConnectors) {
1130         this._stationInfo.powerDivider++;
1131       }
1132       const configuredMeterValueSampleInterval = this._getConfigurationKey('MeterValueSampleInterval');
1133       this._startMeterValues(connectorId,
1134         configuredMeterValueSampleInterval ? Utils.convertToInt(configuredMeterValueSampleInterval.value) * 1000 : 60000);
1135     } else {
1136       logger.error(this._logPrefix() + ' Starting transaction id ' + payload.transactionId.toString() + ' REJECTED with status ' + payload.idTagInfo?.status + ', idTag ' + requestPayload.idTag);
1137       this._resetTransactionOnConnector(connectorId);
1138       this.sendStatusNotification(connectorId, ChargePointStatus.AVAILABLE).catch(() => { });
1139     }
1140   }
1141
1142   handleResponseStopTransaction(payload: StopTransactionResponse, requestPayload): void {
1143     let transactionConnectorId: number;
1144     for (const connector in this._connectors) {
1145       if (this.getConnector(Utils.convertToInt(connector)).transactionId === Utils.convertToInt(requestPayload.transactionId)) {
1146         transactionConnectorId = Utils.convertToInt(connector);
1147         break;
1148       }
1149     }
1150     if (!transactionConnectorId) {
1151       logger.error(this._logPrefix() + ' Trying to stop a non existing transaction ' + requestPayload.transactionId);
1152       return;
1153     }
1154     if (payload.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
1155       this.sendStatusNotification(transactionConnectorId, ChargePointStatus.AVAILABLE).catch(() => { });
1156       if (this._stationInfo.powerSharedByConnectors) {
1157         this._stationInfo.powerDivider--;
1158       }
1159       logger.info(this._logPrefix() + ' Transaction ' + requestPayload.transactionId + ' STOPPED on ' + this._stationInfo.name + '#' + transactionConnectorId.toString());
1160       this._resetTransactionOnConnector(transactionConnectorId);
1161     } else {
1162       logger.error(this._logPrefix() + ' Stopping transaction id ' + requestPayload.transactionId + ' REJECTED with status ' + payload.idTagInfo?.status);
1163     }
1164   }
1165
1166   handleResponseStatusNotification(payload, requestPayload): void {
1167     logger.debug(this._logPrefix() + ' Status notification response received: %j to StatusNotification request: %j', payload, requestPayload);
1168   }
1169
1170   handleResponseMeterValues(payload, requestPayload): void {
1171     logger.debug(this._logPrefix() + ' MeterValues response received: %j to MeterValues request: %j', payload, requestPayload);
1172   }
1173
1174   handleResponseHeartbeat(payload, requestPayload): void {
1175     logger.debug(this._logPrefix() + ' Heartbeat response received: %j to Heartbeat request: %j', payload, requestPayload);
1176   }
1177
1178   async handleRequest(messageId: string, commandName: string, commandPayload): Promise<void> {
1179     let response;
1180     // Call
1181     if (typeof this['handleRequest' + commandName] === 'function') {
1182       try {
1183         // Call the method to build the response
1184         response = await this['handleRequest' + commandName](commandPayload);
1185       } catch (error) {
1186         // Log
1187         logger.error(this._logPrefix() + ' Handle request error: %j', error);
1188         // Send back response to inform backend
1189         await this.sendError(messageId, error, commandName);
1190         throw error;
1191       }
1192     } else {
1193       // Throw exception
1194       await this.sendError(messageId, new OCPPError(Constants.OCPP_ERROR_NOT_IMPLEMENTED, `${commandName} is not implemented`, {}), commandName);
1195       throw new Error(`${commandName} is not implemented ${JSON.stringify(commandPayload, null, ' ')}`);
1196     }
1197     // Send response
1198     await this.sendMessage(messageId, response, Constants.OCPP_JSON_CALL_RESULT_MESSAGE, commandName);
1199   }
1200
1201   // Simulate charging station restart
1202   handleRequestReset(commandPayload): DefaultRequestResponse {
1203     setImmediate(async () => {
1204       await this.stop(commandPayload.type + 'Reset' as StopTransactionReason);
1205       await Utils.sleep(this._stationInfo.resetTime);
1206       await this.start();
1207     });
1208     logger.info(`${this._logPrefix()} ${commandPayload.type} reset command received, simulating it. The station will be back online in ${Utils.milliSecondsToHHMMSS(this._stationInfo.resetTime)}`);
1209     return Constants.OCPP_RESPONSE_ACCEPTED;
1210   }
1211
1212   async handleRequestUnlockConnector(commandPayload): Promise<UnlockResponse> {
1213     const connectorId = Utils.convertToInt(commandPayload.connectorId);
1214     if (connectorId === 0) {
1215       logger.error(this._logPrefix() + ' Trying to unlock connector ' + connectorId.toString());
1216       return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
1217     }
1218     if (this.getConnector(connectorId).transactionStarted) {
1219       const stopResponse = await this.sendStopTransaction(this.getConnector(connectorId).transactionId, StopTransactionReason.UNLOCK_COMMAND);
1220       if (stopResponse.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
1221         return Constants.OCPP_RESPONSE_UNLOCKED;
1222       }
1223       return Constants.OCPP_RESPONSE_UNLOCK_FAILED;
1224     }
1225     await this.sendStatusNotification(connectorId, ChargePointStatus.AVAILABLE);
1226     return Constants.OCPP_RESPONSE_UNLOCKED;
1227   }
1228
1229   _getConfigurationKey(key: string): ConfigurationKey {
1230     return this._configuration.configurationKey.find((configElement) => configElement.key === key);
1231   }
1232
1233   _addConfigurationKey(key: string, value: string, readonly = false, visible = true, reboot = false): void {
1234     const keyFound = this._getConfigurationKey(key);
1235     if (!keyFound) {
1236       this._configuration.configurationKey.push({
1237         key,
1238         readonly,
1239         value,
1240         visible,
1241         reboot,
1242       });
1243     }
1244   }
1245
1246   _setConfigurationKeyValue(key: string, value: string): void {
1247     const keyFound = this._getConfigurationKey(key);
1248     if (keyFound) {
1249       const keyIndex = this._configuration.configurationKey.indexOf(keyFound);
1250       this._configuration.configurationKey[keyIndex].value = value;
1251     }
1252   }
1253
1254   handleRequestGetConfiguration(commandPayload): { configurationKey: ConfigurationKey[]; unknownKey: string[] } {
1255     const configurationKey: ConfigurationKey[] = [];
1256     const unknownKey: string[] = [];
1257     if (Utils.isEmptyArray(commandPayload.key)) {
1258       for (const configuration of this._configuration.configurationKey) {
1259         if (Utils.isUndefined(configuration.visible)) {
1260           configuration.visible = true;
1261         }
1262         if (!configuration.visible) {
1263           continue;
1264         }
1265         configurationKey.push({
1266           key: configuration.key,
1267           readonly: configuration.readonly,
1268           value: configuration.value,
1269         });
1270       }
1271     } else {
1272       for (const key of commandPayload.key as string[]) {
1273         const keyFound = this._getConfigurationKey(key);
1274         if (keyFound) {
1275           if (Utils.isUndefined(keyFound.visible)) {
1276             keyFound.visible = true;
1277           }
1278           if (!keyFound.visible) {
1279             continue;
1280           }
1281           configurationKey.push({
1282             key: keyFound.key,
1283             readonly: keyFound.readonly,
1284             value: keyFound.value,
1285           });
1286         } else {
1287           unknownKey.push(key);
1288         }
1289       }
1290     }
1291     return {
1292       configurationKey,
1293       unknownKey,
1294     };
1295   }
1296
1297   handleRequestChangeConfiguration(commandPayload): ConfigurationResponse {
1298     const keyToChange = this._getConfigurationKey(commandPayload.key);
1299     if (!keyToChange) {
1300       return Constants.OCPP_CONFIGURATION_RESPONSE_NOT_SUPPORTED;
1301     } else if (keyToChange && keyToChange.readonly) {
1302       return Constants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
1303     } else if (keyToChange && !keyToChange.readonly) {
1304       const keyIndex = this._configuration.configurationKey.indexOf(keyToChange);
1305       let valueChanged = false;
1306       if (this._configuration.configurationKey[keyIndex].value !== commandPayload.value) {
1307         this._configuration.configurationKey[keyIndex].value = commandPayload.value as string;
1308         valueChanged = true;
1309       }
1310       let triggerHeartbeatRestart = false;
1311       if (keyToChange.key === 'HeartBeatInterval' && valueChanged) {
1312         this._setConfigurationKeyValue('HeartbeatInterval', commandPayload.value);
1313         triggerHeartbeatRestart = true;
1314       }
1315       if (keyToChange.key === 'HeartbeatInterval' && valueChanged) {
1316         this._setConfigurationKeyValue('HeartBeatInterval', commandPayload.value);
1317         triggerHeartbeatRestart = true;
1318       }
1319       if (triggerHeartbeatRestart) {
1320         this._heartbeatInterval = Utils.convertToInt(commandPayload.value) * 1000;
1321         this._restartHeartbeat();
1322       }
1323       if (keyToChange.key === 'WebSocketPingInterval' && valueChanged) {
1324         this._restartWebSocketPing();
1325       }
1326       if (keyToChange.reboot) {
1327         return Constants.OCPP_CONFIGURATION_RESPONSE_REBOOT_REQUIRED;
1328       }
1329       return Constants.OCPP_CONFIGURATION_RESPONSE_ACCEPTED;
1330     }
1331   }
1332
1333   async handleRequestRemoteStartTransaction(commandPayload): Promise<DefaultRequestResponse> {
1334     const transactionConnectorID: number = commandPayload.connectorId ? Utils.convertToInt(commandPayload.connectorId) : 1;
1335     if (this._getAuthorizeRemoteTxRequests() && this._getLocalAuthListEnabled() && this.hasAuthorizedTags()) {
1336       // Check if authorized
1337       if (this._authorizedTags.find((value) => value === commandPayload.idTag)) {
1338         // Authorization successful start transaction
1339         await this.sendStartTransaction(transactionConnectorID, commandPayload.idTag);
1340         logger.debug(this._logPrefix() + ' Transaction remotely STARTED on ' + this._stationInfo.name + '#' + transactionConnectorID.toString() + ' for idTag ' + commandPayload.idTag);
1341         return Constants.OCPP_RESPONSE_ACCEPTED;
1342       }
1343       logger.error(this._logPrefix() + ' Remote starting transaction REJECTED with status ' + commandPayload.idTagInfo?.status + ', idTag ' + commandPayload.idTag);
1344       return Constants.OCPP_RESPONSE_REJECTED;
1345     }
1346     // No local authorization check required => start transaction
1347     await this.sendStartTransaction(transactionConnectorID, commandPayload.idTag);
1348     logger.debug(this._logPrefix() + ' Transaction remotely STARTED on ' + this._stationInfo.name + '#' + transactionConnectorID.toString() + ' for idTag ' + commandPayload.idTag);
1349     return Constants.OCPP_RESPONSE_ACCEPTED;
1350   }
1351
1352   async handleRequestRemoteStopTransaction(commandPayload): Promise<DefaultRequestResponse> {
1353     const transactionId = Utils.convertToInt(commandPayload.transactionId);
1354     for (const connector in this._connectors) {
1355       if (this.getConnector(Utils.convertToInt(connector)).transactionId === transactionId) {
1356         await this.sendStopTransaction(transactionId);
1357         return Constants.OCPP_RESPONSE_ACCEPTED;
1358       }
1359     }
1360     logger.info(this._logPrefix() + ' Trying to remote stop a non existing transaction ' + transactionId.toString());
1361     return Constants.OCPP_RESPONSE_REJECTED;
1362   }
1363 }
1364