src/charging-station/ocpp/1.6/OCPP16IncomingRequestService.ts

   1 // Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
   2
   3 import fs from 'fs';
   4 import path from 'path';
   5 import { URL, fileURLToPath } from 'url';
   6
   7 import type { JSONSchemaType } from 'ajv';
   8 import { Client, FTPResponse } from 'basic-ftp';
   9 import tar from 'tar';
  10
  11 import OCPPError from '../../../exception/OCPPError';
  12 import type { JsonObject, JsonType } from '../../../types/JsonType';
  13 import { OCPP16ChargePointErrorCode } from '../../../types/ocpp/1.6/ChargePointErrorCode';
  14 import { OCPP16ChargePointStatus } from '../../../types/ocpp/1.6/ChargePointStatus';
  15 import {
  16   ChargingProfilePurposeType,
  17   OCPP16ChargingProfile,
  18 } from '../../../types/ocpp/1.6/ChargingProfile';
  19 import {
  20   OCPP16StandardParametersKey,
  21   OCPP16SupportedFeatureProfiles,
  22 } from '../../../types/ocpp/1.6/Configuration';
  23 import { OCPP16DiagnosticsStatus } from '../../../types/ocpp/1.6/DiagnosticsStatus';
  24 import {
  25   ChangeAvailabilityRequest,
  26   ChangeConfigurationRequest,
  27   ClearChargingProfileRequest,
  28   DiagnosticsStatusNotificationRequest,
  29   GetConfigurationRequest,
  30   GetDiagnosticsRequest,
  31   MessageTrigger,
  32   OCPP16AvailabilityType,
  33   OCPP16BootNotificationRequest,
  34   OCPP16ClearCacheRequest,
  35   OCPP16HeartbeatRequest,
  36   OCPP16IncomingRequestCommand,
  37   OCPP16RequestCommand,
  38   OCPP16StatusNotificationRequest,
  39   OCPP16TriggerMessageRequest,
  40   RemoteStartTransactionRequest,
  41   RemoteStopTransactionRequest,
  42   ResetRequest,
  43   SetChargingProfileRequest,
  44   UnlockConnectorRequest,
  45 } from '../../../types/ocpp/1.6/Requests';
  46 import type {
  47   ChangeAvailabilityResponse,
  48   ChangeConfigurationResponse,
  49   ClearChargingProfileResponse,
  50   DiagnosticsStatusNotificationResponse,
  51   GetConfigurationResponse,
  52   GetDiagnosticsResponse,
  53   OCPP16BootNotificationResponse,
  54   OCPP16HeartbeatResponse,
  55   OCPP16StatusNotificationResponse,
  56   OCPP16TriggerMessageResponse,
  57   SetChargingProfileResponse,
  58   UnlockConnectorResponse,
  59 } from '../../../types/ocpp/1.6/Responses';
  60 import {
  61   OCPP16AuthorizationStatus,
  62   OCPP16AuthorizeRequest,
  63   OCPP16AuthorizeResponse,
  64   OCPP16StartTransactionRequest,
  65   OCPP16StartTransactionResponse,
  66   OCPP16StopTransactionReason,
  67 } from '../../../types/ocpp/1.6/Transaction';
  68 import type { OCPPConfigurationKey } from '../../../types/ocpp/Configuration';
  69 import { ErrorType } from '../../../types/ocpp/ErrorType';
  70 import type { IncomingRequestHandler } from '../../../types/ocpp/Requests';
  71 import type { DefaultResponse } from '../../../types/ocpp/Responses';
  72 import Constants from '../../../utils/Constants';
  73 import logger from '../../../utils/Logger';
  74 import Utils from '../../../utils/Utils';
  75 import type ChargingStation from '../../ChargingStation';
  76 import { ChargingStationConfigurationUtils } from '../../ChargingStationConfigurationUtils';
  77 import { ChargingStationUtils } from '../../ChargingStationUtils';
  78 import OCPPIncomingRequestService from '../OCPPIncomingRequestService';
  79 import { OCPP16ServiceUtils } from './OCPP16ServiceUtils';
  80
  81 const moduleName = 'OCPP16IncomingRequestService';
  82
  83 export default class OCPP16IncomingRequestService extends OCPPIncomingRequestService {
  84   private incomingRequestHandlers: Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>;
  85   private jsonSchemas: Map<OCPP16IncomingRequestCommand, JSONSchemaType<JsonObject>>;
  86
  87   public constructor() {
  88     if (new.target?.name === moduleName) {
  89       throw new TypeError(`Cannot construct ${new.target?.name} instances directly`);
  90     }
  91     super();
  92     this.incomingRequestHandlers = new Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>([
  93       [OCPP16IncomingRequestCommand.RESET, this.handleRequestReset.bind(this)],
  94       [OCPP16IncomingRequestCommand.CLEAR_CACHE, this.handleRequestClearCache.bind(this)],
  95       [OCPP16IncomingRequestCommand.UNLOCK_CONNECTOR, this.handleRequestUnlockConnector.bind(this)],
  96       [
  97         OCPP16IncomingRequestCommand.GET_CONFIGURATION,
  98         this.handleRequestGetConfiguration.bind(this),
  99       ],
 100       [
 101         OCPP16IncomingRequestCommand.CHANGE_CONFIGURATION,
 102         this.handleRequestChangeConfiguration.bind(this),
 103       ],
 104       [
 105         OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE,
 106         this.handleRequestSetChargingProfile.bind(this),
 107       ],
 108       [
 109         OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE,
 110         this.handleRequestClearChargingProfile.bind(this),
 111       ],
 112       [
 113         OCPP16IncomingRequestCommand.CHANGE_AVAILABILITY,
 114         this.handleRequestChangeAvailability.bind(this),
 115       ],
 116       [
 117         OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION,
 118         this.handleRequestRemoteStartTransaction.bind(this),
 119       ],
 120       [
 121         OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION,
 122         this.handleRequestRemoteStopTransaction.bind(this),
 123       ],
 124       [OCPP16IncomingRequestCommand.GET_DIAGNOSTICS, this.handleRequestGetDiagnostics.bind(this)],
 125       [OCPP16IncomingRequestCommand.TRIGGER_MESSAGE, this.handleRequestTriggerMessage.bind(this)],
 126     ]);
 127     this.jsonSchemas = new Map<OCPP16IncomingRequestCommand, JSONSchemaType<JsonObject>>([
 128       [
 129         OCPP16IncomingRequestCommand.RESET,
 130         JSON.parse(
 131           fs.readFileSync(
 132             path.resolve(
 133               path.dirname(fileURLToPath(import.meta.url)),
 134               '../../../assets/json-schemas/ocpp/1.6/Reset.json'
 135             ),
 136             'utf8'
 137           )
 138         ) as JSONSchemaType<ResetRequest>,
 139       ],
 140       [
 141         OCPP16IncomingRequestCommand.CLEAR_CACHE,
 142         JSON.parse(
 143           fs.readFileSync(
 144             path.resolve(
 145               path.dirname(fileURLToPath(import.meta.url)),
 146               '../../../assets/json-schemas/ocpp/1.6/ClearCache.json'
 147             ),
 148             'utf8'
 149           )
 150         ) as JSONSchemaType<OCPP16ClearCacheRequest>,
 151       ],
 152       [
 153         OCPP16IncomingRequestCommand.UNLOCK_CONNECTOR,
 154         JSON.parse(
 155           fs.readFileSync(
 156             path.resolve(
 157               path.dirname(fileURLToPath(import.meta.url)),
 158               '../../../assets/json-schemas/ocpp/1.6/UnlockConnector.json'
 159             ),
 160             'utf8'
 161           )
 162         ) as JSONSchemaType<UnlockConnectorRequest>,
 163       ],
 164       [
 165         OCPP16IncomingRequestCommand.GET_CONFIGURATION,
 166         JSON.parse(
 167           fs.readFileSync(
 168             path.resolve(
 169               path.dirname(fileURLToPath(import.meta.url)),
 170               '../../../assets/json-schemas/ocpp/1.6/GetConfiguration.json'
 171             ),
 172             'utf8'
 173           )
 174         ) as JSONSchemaType<GetConfigurationRequest>,
 175       ],
 176       [
 177         OCPP16IncomingRequestCommand.CHANGE_CONFIGURATION,
 178         JSON.parse(
 179           fs.readFileSync(
 180             path.resolve(
 181               path.dirname(fileURLToPath(import.meta.url)),
 182               '../../../assets/json-schemas/ocpp/1.6/ChangeConfiguration.json'
 183             ),
 184             'utf8'
 185           )
 186         ) as JSONSchemaType<ChangeConfigurationRequest>,
 187       ],
 188       [
 189         OCPP16IncomingRequestCommand.GET_DIAGNOSTICS,
 190         JSON.parse(
 191           fs.readFileSync(
 192             path.resolve(
 193               path.dirname(fileURLToPath(import.meta.url)),
 194               '../../../assets/json-schemas/ocpp/1.6/GetDiagnostics.json'
 195             ),
 196             'utf8'
 197           )
 198         ) as JSONSchemaType<GetDiagnosticsRequest>,
 199       ],
 200       [
 201         OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE,
 202         JSON.parse(
 203           fs.readFileSync(
 204             path.resolve(
 205               path.dirname(fileURLToPath(import.meta.url)),
 206               '../../../assets/json-schemas/ocpp/1.6/SetChargingProfile.json'
 207             ),
 208             'utf8'
 209           )
 210         ) as JSONSchemaType<SetChargingProfileRequest>,
 211       ],
 212       [
 213         OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE,
 214         JSON.parse(
 215           fs.readFileSync(
 216             path.resolve(
 217               path.dirname(fileURLToPath(import.meta.url)),
 218               '../../../assets/json-schemas/ocpp/1.6/ClearChargingProfile.json'
 219             ),
 220             'utf8'
 221           )
 222         ) as JSONSchemaType<ClearChargingProfileRequest>,
 223       ],
 224       [
 225         OCPP16IncomingRequestCommand.CHANGE_AVAILABILITY,
 226         JSON.parse(
 227           fs.readFileSync(
 228             path.resolve(
 229               path.dirname(fileURLToPath(import.meta.url)),
 230               '../../../assets/json-schemas/ocpp/1.6/ChangeAvailability.json'
 231             ),
 232             'utf8'
 233           )
 234         ) as JSONSchemaType<ChangeAvailabilityRequest>,
 235       ],
 236       [
 237         OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION,
 238         JSON.parse(
 239           fs.readFileSync(
 240             path.resolve(
 241               path.dirname(fileURLToPath(import.meta.url)),
 242               '../../../assets/json-schemas/ocpp/1.6/RemoteStartTransaction.json'
 243             ),
 244             'utf8'
 245           )
 246         ) as JSONSchemaType<RemoteStartTransactionRequest>,
 247       ],
 248       [
 249         OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION,
 250         JSON.parse(
 251           fs.readFileSync(
 252             path.resolve(
 253               path.dirname(fileURLToPath(import.meta.url)),
 254               '../../../assets/json-schemas/ocpp/1.6/RemoteStopTransaction.json'
 255             ),
 256             'utf8'
 257           )
 258         ) as JSONSchemaType<RemoteStopTransactionRequest>,
 259       ],
 260       [
 261         OCPP16IncomingRequestCommand.TRIGGER_MESSAGE,
 262         JSON.parse(
 263           fs.readFileSync(
 264             path.resolve(
 265               path.dirname(fileURLToPath(import.meta.url)),
 266               '../../../assets/json-schemas/ocpp/1.6/TriggerMessage.json'
 267             ),
 268             'utf8'
 269           )
 270         ) as JSONSchemaType<OCPP16TriggerMessageRequest>,
 271       ],
 272     ]);
 273     this.validatePayload.bind(this);
 274   }
 275
 276   public async incomingRequestHandler(
 277     chargingStation: ChargingStation,
 278     messageId: string,
 279     commandName: OCPP16IncomingRequestCommand,
 280     commandPayload: JsonType
 281   ): Promise<void> {
 282     let response: JsonType;
 283     if (
 284       chargingStation.getOcppStrictCompliance() &&
 285       chargingStation.isInPendingState() &&
 286       (commandName === OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION ||
 287         commandName === OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION)
 288     ) {
 289       throw new OCPPError(
 290         ErrorType.SECURITY_ERROR,
 291         `${commandName} cannot be issued to handle request PDU ${JSON.stringify(
 292           commandPayload,
 293           null,
 294           2
 295         )} while the charging station is in pending state on the central server`,
 296         commandName,
 297         commandPayload
 298       );
 299     }
 300     if (
 301       chargingStation.isRegistered() === true ||
 302       (chargingStation.getOcppStrictCompliance() === false &&
 303         chargingStation.isInUnknownState() === true)
 304     ) {
 305       if (
 306         this.incomingRequestHandlers.has(commandName) === true &&
 307         OCPP16ServiceUtils.isIncomingRequestCommandSupported(chargingStation, commandName) === true
 308       ) {
 309         try {
 310           this.validatePayload(chargingStation, commandName, commandPayload);
 311           // Call the method to build the response
 312           response = await this.incomingRequestHandlers.get(commandName)(
 313             chargingStation,
 314             commandPayload
 315           );
 316         } catch (error) {
 317           // Log
 318           logger.error(
 319             `${chargingStation.logPrefix()} ${moduleName}.incomingRequestHandler: Handle incoming request error:`,
 320             error
 321           );
 322           throw error;
 323         }
 324       } else {
 325         // Throw exception
 326         throw new OCPPError(
 327           ErrorType.NOT_IMPLEMENTED,
 328           `${commandName} is not implemented to handle request PDU ${JSON.stringify(
 329             commandPayload,
 330             null,
 331             2
 332           )}`,
 333           commandName,
 334           commandPayload
 335         );
 336       }
 337     } else {
 338       throw new OCPPError(
 339         ErrorType.SECURITY_ERROR,
 340         `${commandName} cannot be issued to handle request PDU ${JSON.stringify(
 341           commandPayload,
 342           null,
 343           2
 344         )} while the charging station is not registered on the central server.`,
 345         commandName,
 346         commandPayload
 347       );
 348     }
 349     // Send the built response
 350     await chargingStation.ocppRequestService.sendResponse(
 351       chargingStation,
 352       messageId,
 353       response,
 354       commandName
 355     );
 356   }
 357
 358   private validatePayload(
 359     chargingStation: ChargingStation,
 360     commandName: OCPP16IncomingRequestCommand,
 361     commandPayload: JsonType
 362   ): boolean {
 363     if (this.jsonSchemas.has(commandName)) {
 364       return this.validateIncomingRequestPayload(
 365         chargingStation,
 366         commandName,
 367         this.jsonSchemas.get(commandName),
 368         commandPayload
 369       );
 370     }
 371     logger.warn(
 372       `${chargingStation.logPrefix()} ${moduleName}.validatePayload: No JSON schema found for command ${commandName} PDU validation`
 373     );
 374     return false;
 375   }
 376
 377   // Simulate charging station restart
 378   private handleRequestReset(
 379     chargingStation: ChargingStation,
 380     commandPayload: ResetRequest
 381   ): DefaultResponse {
 382     this.asyncResource.runInAsyncScope(
 383       chargingStation.reset.bind(chargingStation) as (
 384         this: ChargingStation,
 385         ...args: any[]
 386       ) => void,
 387       chargingStation,
 388       (commandPayload.type + 'Reset') as OCPP16StopTransactionReason
 389     );
 390     logger.info(
 391       `${chargingStation.logPrefix()} ${
 392         commandPayload.type
 393       } reset command received, simulating it. The station will be back online in ${Utils.formatDurationMilliSeconds(
 394         chargingStation.stationInfo.resetTime
 395       )}`
 396     );
 397     return Constants.OCPP_RESPONSE_ACCEPTED;
 398   }
 399
 400   private handleRequestClearCache(chargingStation: ChargingStation): DefaultResponse {
 401     chargingStation.authorizedTagsCache.deleteAuthorizedTags(
 402       ChargingStationUtils.getAuthorizationFile(chargingStation.stationInfo)
 403     );
 404     return Constants.OCPP_RESPONSE_ACCEPTED;
 405   }
 406
 407   private async handleRequestUnlockConnector(
 408     chargingStation: ChargingStation,
 409     commandPayload: UnlockConnectorRequest
 410   ): Promise<UnlockConnectorResponse> {
 411     const connectorId = commandPayload.connectorId;
 412     if (connectorId === 0) {
 413       logger.error(
 414         chargingStation.logPrefix() + ' Trying to unlock connector ' + connectorId.toString()
 415       );
 416       return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
 417     }
 418     if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
 419       const stopResponse = await chargingStation.stopTransactionOnConnector(
 420         connectorId,
 421         OCPP16StopTransactionReason.UNLOCK_COMMAND
 422       );
 423       if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 424         return Constants.OCPP_RESPONSE_UNLOCKED;
 425       }
 426       return Constants.OCPP_RESPONSE_UNLOCK_FAILED;
 427     }
 428     await chargingStation.ocppRequestService.requestHandler<
 429       OCPP16StatusNotificationRequest,
 430       OCPP16StatusNotificationResponse
 431     >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 432       connectorId,
 433       status: OCPP16ChargePointStatus.AVAILABLE,
 434       errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 435     });
 436     chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 437     return Constants.OCPP_RESPONSE_UNLOCKED;
 438   }
 439
 440   private handleRequestGetConfiguration(
 441     chargingStation: ChargingStation,
 442     commandPayload: GetConfigurationRequest
 443   ): GetConfigurationResponse {
 444     const configurationKey: OCPPConfigurationKey[] = [];
 445     const unknownKey: string[] = [];
 446     if (Utils.isEmptyArray(commandPayload.key) === true) {
 447       for (const configuration of chargingStation.ocppConfiguration.configurationKey) {
 448         if (Utils.isUndefined(configuration.visible) === true) {
 449           configuration.visible = true;
 450         }
 451         if (configuration.visible === false) {
 452           continue;
 453         }
 454         configurationKey.push({
 455           key: configuration.key,
 456           readonly: configuration.readonly,
 457           value: configuration.value,
 458         });
 459       }
 460     } else {
 461       for (const key of commandPayload.key) {
 462         const keyFound = ChargingStationConfigurationUtils.getConfigurationKey(
 463           chargingStation,
 464           key
 465         );
 466         if (keyFound) {
 467           if (Utils.isUndefined(keyFound.visible) === true) {
 468             keyFound.visible = true;
 469           }
 470           if (keyFound.visible === false) {
 471             continue;
 472           }
 473           configurationKey.push({
 474             key: keyFound.key,
 475             readonly: keyFound.readonly,
 476             value: keyFound.value,
 477           });
 478         } else {
 479           unknownKey.push(key);
 480         }
 481       }
 482     }
 483     return {
 484       configurationKey,
 485       unknownKey,
 486     };
 487   }
 488
 489   private handleRequestChangeConfiguration(
 490     chargingStation: ChargingStation,
 491     commandPayload: ChangeConfigurationRequest
 492   ): ChangeConfigurationResponse {
 493     const keyToChange = ChargingStationConfigurationUtils.getConfigurationKey(
 494       chargingStation,
 495       commandPayload.key,
 496       true
 497     );
 498     if (!keyToChange) {
 499       return Constants.OCPP_CONFIGURATION_RESPONSE_NOT_SUPPORTED;
 500     } else if (keyToChange && keyToChange.readonly) {
 501       return Constants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
 502     } else if (keyToChange && !keyToChange.readonly) {
 503       let valueChanged = false;
 504       if (keyToChange.value !== commandPayload.value) {
 505         ChargingStationConfigurationUtils.setConfigurationKeyValue(
 506           chargingStation,
 507           commandPayload.key,
 508           commandPayload.value,
 509           true
 510         );
 511         valueChanged = true;
 512       }
 513       let triggerHeartbeatRestart = false;
 514       if (keyToChange.key === OCPP16StandardParametersKey.HeartBeatInterval && valueChanged) {
 515         ChargingStationConfigurationUtils.setConfigurationKeyValue(
 516           chargingStation,
 517           OCPP16StandardParametersKey.HeartbeatInterval,
 518           commandPayload.value
 519         );
 520         triggerHeartbeatRestart = true;
 521       }
 522       if (keyToChange.key === OCPP16StandardParametersKey.HeartbeatInterval && valueChanged) {
 523         ChargingStationConfigurationUtils.setConfigurationKeyValue(
 524           chargingStation,
 525           OCPP16StandardParametersKey.HeartBeatInterval,
 526           commandPayload.value
 527         );
 528         triggerHeartbeatRestart = true;
 529       }
 530       if (triggerHeartbeatRestart) {
 531         chargingStation.restartHeartbeat();
 532       }
 533       if (keyToChange.key === OCPP16StandardParametersKey.WebSocketPingInterval && valueChanged) {
 534         chargingStation.restartWebSocketPing();
 535       }
 536       if (keyToChange.reboot) {
 537         return Constants.OCPP_CONFIGURATION_RESPONSE_REBOOT_REQUIRED;
 538       }
 539       return Constants.OCPP_CONFIGURATION_RESPONSE_ACCEPTED;
 540     }
 541   }
 542
 543   private handleRequestSetChargingProfile(
 544     chargingStation: ChargingStation,
 545     commandPayload: SetChargingProfileRequest
 546   ): SetChargingProfileResponse {
 547     if (
 548       OCPP16ServiceUtils.checkFeatureProfile(
 549         chargingStation,
 550         OCPP16SupportedFeatureProfiles.SmartCharging,
 551         OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE
 552       ) === false
 553     ) {
 554       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_NOT_SUPPORTED;
 555     }
 556     if (chargingStation.connectors.has(commandPayload.connectorId) === false) {
 557       logger.error(
 558         `${chargingStation.logPrefix()} Trying to set charging profile(s) to a non existing connector Id ${
 559           commandPayload.connectorId
 560         }`
 561       );
 562       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 563     }
 564     if (
 565       commandPayload.csChargingProfiles.chargingProfilePurpose ===
 566         ChargingProfilePurposeType.CHARGE_POINT_MAX_PROFILE &&
 567       commandPayload.connectorId !== 0
 568     ) {
 569       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 570     }
 571     if (
 572       commandPayload.csChargingProfiles.chargingProfilePurpose ===
 573         ChargingProfilePurposeType.TX_PROFILE &&
 574       (commandPayload.connectorId === 0 ||
 575         chargingStation.getConnectorStatus(commandPayload.connectorId)?.transactionStarted ===
 576           false)
 577     ) {
 578       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 579     }
 580     OCPP16ServiceUtils.setChargingProfile(
 581       chargingStation,
 582       commandPayload.connectorId,
 583       commandPayload.csChargingProfiles
 584     );
 585     logger.debug(
 586       `${chargingStation.logPrefix()} Charging profile(s) set on connector id ${
 587         commandPayload.connectorId
 588       }, dump their stack: %j`,
 589       chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles
 590     );
 591     return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 592   }
 593
 594   private handleRequestClearChargingProfile(
 595     chargingStation: ChargingStation,
 596     commandPayload: ClearChargingProfileRequest
 597   ): ClearChargingProfileResponse {
 598     if (
 599       OCPP16ServiceUtils.checkFeatureProfile(
 600         chargingStation,
 601         OCPP16SupportedFeatureProfiles.SmartCharging,
 602         OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE
 603       ) === false
 604     ) {
 605       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 606     }
 607     if (chargingStation.connectors.has(commandPayload.connectorId) === false) {
 608       logger.error(
 609         `${chargingStation.logPrefix()} Trying to clear a charging profile(s) to a non existing connector Id ${
 610           commandPayload.connectorId
 611         }`
 612       );
 613       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 614     }
 615     const connectorStatus = chargingStation.getConnectorStatus(commandPayload.connectorId);
 616     if (commandPayload.connectorId && !Utils.isEmptyArray(connectorStatus.chargingProfiles)) {
 617       connectorStatus.chargingProfiles = [];
 618       logger.debug(
 619         `${chargingStation.logPrefix()} Charging profile(s) cleared on connector id ${
 620           commandPayload.connectorId
 621         }, dump their stack: %j`,
 622         connectorStatus.chargingProfiles
 623       );
 624       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 625     }
 626     if (!commandPayload.connectorId) {
 627       let clearedCP = false;
 628       for (const connectorId of chargingStation.connectors.keys()) {
 629         if (!Utils.isEmptyArray(chargingStation.getConnectorStatus(connectorId).chargingProfiles)) {
 630           chargingStation
 631             .getConnectorStatus(connectorId)
 632             .chargingProfiles?.forEach((chargingProfile: OCPP16ChargingProfile, index: number) => {
 633               let clearCurrentCP = false;
 634               if (chargingProfile.chargingProfileId === commandPayload.id) {
 635                 clearCurrentCP = true;
 636               }
 637               if (
 638                 !commandPayload.chargingProfilePurpose &&
 639                 chargingProfile.stackLevel === commandPayload.stackLevel
 640               ) {
 641                 clearCurrentCP = true;
 642               }
 643               if (
 644                 !chargingProfile.stackLevel &&
 645                 chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose
 646               ) {
 647                 clearCurrentCP = true;
 648               }
 649               if (
 650                 chargingProfile.stackLevel === commandPayload.stackLevel &&
 651                 chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose
 652               ) {
 653                 clearCurrentCP = true;
 654               }
 655               if (clearCurrentCP) {
 656                 connectorStatus.chargingProfiles.splice(index, 1);
 657                 logger.debug(
 658                   `${chargingStation.logPrefix()} Matching charging profile(s) cleared on connector id ${
 659                     commandPayload.connectorId
 660                   }, dump their stack: %j`,
 661                   connectorStatus.chargingProfiles
 662                 );
 663                 clearedCP = true;
 664               }
 665             });
 666         }
 667       }
 668       if (clearedCP) {
 669         return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 670       }
 671     }
 672     return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 673   }
 674
 675   private async handleRequestChangeAvailability(
 676     chargingStation: ChargingStation,
 677     commandPayload: ChangeAvailabilityRequest
 678   ): Promise<ChangeAvailabilityResponse> {
 679     const connectorId: number = commandPayload.connectorId;
 680     if (!chargingStation.getConnectorStatus(connectorId)) {
 681       logger.error(
 682         `${chargingStation.logPrefix()} Trying to change the availability of a non existing connector Id ${connectorId.toString()}`
 683       );
 684       return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 685     }
 686     const chargePointStatus: OCPP16ChargePointStatus =
 687       commandPayload.type === OCPP16AvailabilityType.OPERATIVE
 688         ? OCPP16ChargePointStatus.AVAILABLE
 689         : OCPP16ChargePointStatus.UNAVAILABLE;
 690     if (connectorId === 0) {
 691       let response: ChangeAvailabilityResponse = Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 692       for (const id of chargingStation.connectors.keys()) {
 693         if (chargingStation.getConnectorStatus(id)?.transactionStarted === true) {
 694           response = Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 695         }
 696         chargingStation.getConnectorStatus(id).availability = commandPayload.type;
 697         if (response === Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED) {
 698           await chargingStation.ocppRequestService.requestHandler<
 699             OCPP16StatusNotificationRequest,
 700             OCPP16StatusNotificationResponse
 701           >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 702             connectorId: id,
 703             status: chargePointStatus,
 704             errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 705           });
 706           chargingStation.getConnectorStatus(id).status = chargePointStatus;
 707         }
 708       }
 709       return response;
 710     } else if (
 711       connectorId > 0 &&
 712       (chargingStation.isChargingStationAvailable() === true ||
 713         (chargingStation.isChargingStationAvailable() === false &&
 714           commandPayload.type === OCPP16AvailabilityType.INOPERATIVE))
 715     ) {
 716       if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
 717         chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 718         return Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 719       }
 720       chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 721       await chargingStation.ocppRequestService.requestHandler<
 722         OCPP16StatusNotificationRequest,
 723         OCPP16StatusNotificationResponse
 724       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 725         connectorId,
 726         status: chargePointStatus,
 727         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 728       });
 729       chargingStation.getConnectorStatus(connectorId).status = chargePointStatus;
 730       return Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 731     }
 732     return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 733   }
 734
 735   private async handleRequestRemoteStartTransaction(
 736     chargingStation: ChargingStation,
 737     commandPayload: RemoteStartTransactionRequest
 738   ): Promise<DefaultResponse> {
 739     const transactionConnectorId = commandPayload.connectorId;
 740     if (chargingStation.connectors.has(transactionConnectorId) === true) {
 741       const remoteStartTransactionLogMsg =
 742         chargingStation.logPrefix() +
 743         ' Transaction remotely STARTED on ' +
 744         chargingStation.stationInfo.chargingStationId +
 745         '#' +
 746         transactionConnectorId.toString() +
 747         " for idTag '" +
 748         commandPayload.idTag +
 749         "'";
 750       await chargingStation.ocppRequestService.requestHandler<
 751         OCPP16StatusNotificationRequest,
 752         OCPP16StatusNotificationResponse
 753       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 754         connectorId: transactionConnectorId,
 755         status: OCPP16ChargePointStatus.PREPARING,
 756         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 757       });
 758       const connectorStatus = chargingStation.getConnectorStatus(transactionConnectorId);
 759       connectorStatus.status = OCPP16ChargePointStatus.PREPARING;
 760       if (chargingStation.isChargingStationAvailable() === true) {
 761         // Check if authorized
 762         if (chargingStation.getAuthorizeRemoteTxRequests() === true) {
 763           let authorized = false;
 764           if (
 765             chargingStation.getLocalAuthListEnabled() === true &&
 766             chargingStation.hasAuthorizedTags() === true &&
 767             chargingStation.authorizedTagsCache
 768               .getAuthorizedTags(
 769                 ChargingStationUtils.getAuthorizationFile(chargingStation.stationInfo)
 770               )
 771               .find((idTag) => idTag === commandPayload.idTag)
 772           ) {
 773             connectorStatus.localAuthorizeIdTag = commandPayload.idTag;
 774             connectorStatus.idTagLocalAuthorized = true;
 775             authorized = true;
 776           } else if (chargingStation.getMustAuthorizeAtRemoteStart() === true) {
 777             connectorStatus.authorizeIdTag = commandPayload.idTag;
 778             const authorizeResponse: OCPP16AuthorizeResponse =
 779               await chargingStation.ocppRequestService.requestHandler<
 780                 OCPP16AuthorizeRequest,
 781                 OCPP16AuthorizeResponse
 782               >(chargingStation, OCPP16RequestCommand.AUTHORIZE, {
 783                 idTag: commandPayload.idTag,
 784               });
 785             if (authorizeResponse?.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 786               authorized = true;
 787             }
 788           } else {
 789             logger.warn(
 790               `${chargingStation.logPrefix()} The charging station configuration expects authorize at remote start transaction but local authorization or authorize isn't enabled`
 791             );
 792           }
 793           if (authorized === true) {
 794             // Authorization successful, start transaction
 795             if (
 796               this.setRemoteStartTransactionChargingProfile(
 797                 chargingStation,
 798                 transactionConnectorId,
 799                 commandPayload.chargingProfile
 800               ) === true
 801             ) {
 802               connectorStatus.transactionRemoteStarted = true;
 803               if (
 804                 (
 805                   await chargingStation.ocppRequestService.requestHandler<
 806                     OCPP16StartTransactionRequest,
 807                     OCPP16StartTransactionResponse
 808                   >(chargingStation, OCPP16RequestCommand.START_TRANSACTION, {
 809                     connectorId: transactionConnectorId,
 810                     idTag: commandPayload.idTag,
 811                   })
 812                 ).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED
 813               ) {
 814                 logger.debug(remoteStartTransactionLogMsg);
 815                 return Constants.OCPP_RESPONSE_ACCEPTED;
 816               }
 817               return this.notifyRemoteStartTransactionRejected(
 818                 chargingStation,
 819                 transactionConnectorId,
 820                 commandPayload.idTag
 821               );
 822             }
 823             return this.notifyRemoteStartTransactionRejected(
 824               chargingStation,
 825               transactionConnectorId,
 826               commandPayload.idTag
 827             );
 828           }
 829           return this.notifyRemoteStartTransactionRejected(
 830             chargingStation,
 831             transactionConnectorId,
 832             commandPayload.idTag
 833           );
 834         }
 835         // No authorization check required, start transaction
 836         if (
 837           this.setRemoteStartTransactionChargingProfile(
 838             chargingStation,
 839             transactionConnectorId,
 840             commandPayload.chargingProfile
 841           ) === true
 842         ) {
 843           connectorStatus.transactionRemoteStarted = true;
 844           if (
 845             (
 846               await chargingStation.ocppRequestService.requestHandler<
 847                 OCPP16StartTransactionRequest,
 848                 OCPP16StartTransactionResponse
 849               >(chargingStation, OCPP16RequestCommand.START_TRANSACTION, {
 850                 connectorId: transactionConnectorId,
 851                 idTag: commandPayload.idTag,
 852               })
 853             ).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED
 854           ) {
 855             logger.debug(remoteStartTransactionLogMsg);
 856             return Constants.OCPP_RESPONSE_ACCEPTED;
 857           }
 858           return this.notifyRemoteStartTransactionRejected(
 859             chargingStation,
 860             transactionConnectorId,
 861             commandPayload.idTag
 862           );
 863         }
 864         return this.notifyRemoteStartTransactionRejected(
 865           chargingStation,
 866           transactionConnectorId,
 867           commandPayload.idTag
 868         );
 869       }
 870       return this.notifyRemoteStartTransactionRejected(
 871         chargingStation,
 872         transactionConnectorId,
 873         commandPayload.idTag
 874       );
 875     }
 876     return this.notifyRemoteStartTransactionRejected(
 877       chargingStation,
 878       transactionConnectorId,
 879       commandPayload.idTag
 880     );
 881   }
 882
 883   private async notifyRemoteStartTransactionRejected(
 884     chargingStation: ChargingStation,
 885     connectorId: number,
 886     idTag: string
 887   ): Promise<DefaultResponse> {
 888     if (
 889       chargingStation.getConnectorStatus(connectorId).status !== OCPP16ChargePointStatus.AVAILABLE
 890     ) {
 891       await chargingStation.ocppRequestService.requestHandler<
 892         OCPP16StatusNotificationRequest,
 893         OCPP16StatusNotificationResponse
 894       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 895         connectorId,
 896         status: OCPP16ChargePointStatus.AVAILABLE,
 897         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 898       });
 899       chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 900     }
 901     logger.warn(
 902       chargingStation.logPrefix() +
 903         ' Remote starting transaction REJECTED on connector Id ' +
 904         connectorId.toString() +
 905         ", idTag '" +
 906         idTag +
 907         "', availability '" +
 908         chargingStation.getConnectorStatus(connectorId).availability +
 909         "', status '" +
 910         chargingStation.getConnectorStatus(connectorId).status +
 911         "'"
 912     );
 913     return Constants.OCPP_RESPONSE_REJECTED;
 914   }
 915
 916   private setRemoteStartTransactionChargingProfile(
 917     chargingStation: ChargingStation,
 918     connectorId: number,
 919     cp: OCPP16ChargingProfile
 920   ): boolean {
 921     if (cp && cp.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE) {
 922       OCPP16ServiceUtils.setChargingProfile(chargingStation, connectorId, cp);
 923       logger.debug(
 924         `${chargingStation.logPrefix()} Charging profile(s) set at remote start transaction on connector id ${connectorId}, dump their stack: %j`,
 925         chargingStation.getConnectorStatus(connectorId).chargingProfiles
 926       );
 927       return true;
 928     } else if (cp && cp.chargingProfilePurpose !== ChargingProfilePurposeType.TX_PROFILE) {
 929       logger.warn(
 930         `${chargingStation.logPrefix()} Not allowed to set ${
 931           cp.chargingProfilePurpose
 932         } charging profile(s) at remote start transaction`
 933       );
 934       return false;
 935     } else if (!cp) {
 936       return true;
 937     }
 938   }
 939
 940   private async handleRequestRemoteStopTransaction(
 941     chargingStation: ChargingStation,
 942     commandPayload: RemoteStopTransactionRequest
 943   ): Promise<DefaultResponse> {
 944     const transactionId = commandPayload.transactionId;
 945     for (const connectorId of chargingStation.connectors.keys()) {
 946       if (
 947         connectorId > 0 &&
 948         chargingStation.getConnectorStatus(connectorId)?.transactionId === transactionId
 949       ) {
 950         await chargingStation.ocppRequestService.requestHandler<
 951           OCPP16StatusNotificationRequest,
 952           OCPP16StatusNotificationResponse
 953         >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 954           connectorId,
 955           status: OCPP16ChargePointStatus.FINISHING,
 956           errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 957         });
 958         chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.FINISHING;
 959         const stopResponse = await chargingStation.stopTransactionOnConnector(
 960           connectorId,
 961           OCPP16StopTransactionReason.REMOTE
 962         );
 963         if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 964           return Constants.OCPP_RESPONSE_ACCEPTED;
 965         }
 966         return Constants.OCPP_RESPONSE_REJECTED;
 967       }
 968     }
 969     logger.warn(
 970       chargingStation.logPrefix() +
 971         ' Trying to remote stop a non existing transaction ' +
 972         transactionId.toString()
 973     );
 974     return Constants.OCPP_RESPONSE_REJECTED;
 975   }
 976
 977   private async handleRequestGetDiagnostics(
 978     chargingStation: ChargingStation,
 979     commandPayload: GetDiagnosticsRequest
 980   ): Promise<GetDiagnosticsResponse> {
 981     if (
 982       OCPP16ServiceUtils.checkFeatureProfile(
 983         chargingStation,
 984         OCPP16SupportedFeatureProfiles.FirmwareManagement,
 985         OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
 986       ) === false
 987     ) {
 988       return Constants.OCPP_RESPONSE_EMPTY;
 989     }
 990     logger.debug(
 991       chargingStation.logPrefix() +
 992         ' ' +
 993         OCPP16IncomingRequestCommand.GET_DIAGNOSTICS +
 994         ' request received: %j',
 995       commandPayload
 996     );
 997     const uri = new URL(commandPayload.location);
 998     if (uri.protocol.startsWith('ftp:')) {
 999       let ftpClient: Client;
1000       try {
1001         const logFiles = fs
1002           .readdirSync(path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../../'))
1003           .filter((file) => file.endsWith('.log'))
1004           .map((file) => path.join('./', file));
1005         const diagnosticsArchive = chargingStation.stationInfo.chargingStationId + '_logs.tar.gz';
1006         tar.create({ gzip: true }, logFiles).pipe(fs.createWriteStream(diagnosticsArchive));
1007         ftpClient = new Client();
1008         const accessResponse = await ftpClient.access({
1009           host: uri.host,
1010           ...(!Utils.isEmptyString(uri.port) && { port: Utils.convertToInt(uri.port) }),
1011           ...(!Utils.isEmptyString(uri.username) && { user: uri.username }),
1012           ...(!Utils.isEmptyString(uri.password) && { password: uri.password }),
1013         });
1014         let uploadResponse: FTPResponse;
1015         if (accessResponse.code === 220) {
1016           // eslint-disable-next-line @typescript-eslint/no-misused-promises
1017           ftpClient.trackProgress(async (info) => {
1018             logger.info(
1019               `${chargingStation.logPrefix()} ${
1020                 info.bytes / 1024
1021               } bytes transferred from diagnostics archive ${info.name}`
1022             );
1023             await chargingStation.ocppRequestService.requestHandler<
1024               DiagnosticsStatusNotificationRequest,
1025               DiagnosticsStatusNotificationResponse
1026             >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1027               status: OCPP16DiagnosticsStatus.Uploading,
1028             });
1029           });
1030           uploadResponse = await ftpClient.uploadFrom(
1031             path.join(
1032               path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../../'),
1033               diagnosticsArchive
1034             ),
1035             uri.pathname + diagnosticsArchive
1036           );
1037           if (uploadResponse.code === 226) {
1038             await chargingStation.ocppRequestService.requestHandler<
1039               DiagnosticsStatusNotificationRequest,
1040               DiagnosticsStatusNotificationResponse
1041             >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1042               status: OCPP16DiagnosticsStatus.Uploaded,
1043             });
1044             if (ftpClient) {
1045               ftpClient.close();
1046             }
1047             return { fileName: diagnosticsArchive };
1048           }
1049           throw new OCPPError(
1050             ErrorType.GENERIC_ERROR,
1051             `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${
1052               uploadResponse?.code && '|' + uploadResponse?.code.toString()
1053             }`,
1054             OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
1055           );
1056         }
1057         throw new OCPPError(
1058           ErrorType.GENERIC_ERROR,
1059           `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${
1060             uploadResponse?.code && '|' + uploadResponse?.code.toString()
1061           }`,
1062           OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
1063         );
1064       } catch (error) {
1065         await chargingStation.ocppRequestService.requestHandler<
1066           DiagnosticsStatusNotificationRequest,
1067           DiagnosticsStatusNotificationResponse
1068         >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1069           status: OCPP16DiagnosticsStatus.UploadFailed,
1070         });
1071         if (ftpClient) {
1072           ftpClient.close();
1073         }
1074         return this.handleIncomingRequestError(
1075           chargingStation,
1076           OCPP16IncomingRequestCommand.GET_DIAGNOSTICS,
1077           error as Error,
1078           { errorResponse: Constants.OCPP_RESPONSE_EMPTY }
1079         );
1080       }
1081     } else {
1082       logger.error(
1083         `${chargingStation.logPrefix()} Unsupported protocol ${
1084           uri.protocol
1085         } to transfer the diagnostic logs archive`
1086       );
1087       await chargingStation.ocppRequestService.requestHandler<
1088         DiagnosticsStatusNotificationRequest,
1089         DiagnosticsStatusNotificationResponse
1090       >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1091         status: OCPP16DiagnosticsStatus.UploadFailed,
1092       });
1093       return Constants.OCPP_RESPONSE_EMPTY;
1094     }
1095   }
1096
1097   private handleRequestTriggerMessage(
1098     chargingStation: ChargingStation,
1099     commandPayload: OCPP16TriggerMessageRequest
1100   ): OCPP16TriggerMessageResponse {
1101     if (
1102       !OCPP16ServiceUtils.checkFeatureProfile(
1103         chargingStation,
1104         OCPP16SupportedFeatureProfiles.RemoteTrigger,
1105         OCPP16IncomingRequestCommand.TRIGGER_MESSAGE
1106       )
1107     ) {
1108       return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
1109     }
1110     // TODO: factor out the check on connector id
1111     if (commandPayload?.connectorId < 0) {
1112       logger.warn(
1113         `${chargingStation.logPrefix()} ${
1114           OCPP16IncomingRequestCommand.TRIGGER_MESSAGE
1115         } incoming request received with invalid connectorId ${commandPayload.connectorId}`
1116       );
1117       return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED;
1118     }
1119     try {
1120       switch (commandPayload.requestedMessage) {
1121         case MessageTrigger.BootNotification:
1122           setTimeout(() => {
1123             chargingStation.ocppRequestService
1124               .requestHandler<OCPP16BootNotificationRequest, OCPP16BootNotificationResponse>(
1125                 chargingStation,
1126                 OCPP16RequestCommand.BOOT_NOTIFICATION,
1127                 chargingStation.bootNotificationRequest,
1128                 { skipBufferingOnError: true, triggerMessage: true }
1129               )
1130               .then((response) => {
1131                 chargingStation.bootNotificationResponse = response;
1132               })
1133               .catch(() => {
1134                 /* This is intentional */
1135               });
1136           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
1137           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
1138         case MessageTrigger.Heartbeat:
1139           setTimeout(() => {
1140             chargingStation.ocppRequestService
1141               .requestHandler<OCPP16HeartbeatRequest, OCPP16HeartbeatResponse>(
1142                 chargingStation,
1143                 OCPP16RequestCommand.HEARTBEAT,
1144                 null,
1145                 {
1146                   triggerMessage: true,
1147                 }
1148               )
1149               .catch(() => {
1150                 /* This is intentional */
1151               });
1152           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
1153           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
1154         case MessageTrigger.StatusNotification:
1155           setTimeout(() => {
1156             if (commandPayload?.connectorId) {
1157               chargingStation.ocppRequestService
1158                 .requestHandler<OCPP16StatusNotificationRequest, OCPP16StatusNotificationResponse>(
1159                   chargingStation,
1160                   OCPP16RequestCommand.STATUS_NOTIFICATION,
1161                   {
1162                     connectorId: commandPayload.connectorId,
1163                     errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
1164                     status: chargingStation.getConnectorStatus(commandPayload.connectorId).status,
1165                   },
1166                   {
1167                     triggerMessage: true,
1168                   }
1169                 )
1170                 .catch(() => {
1171                   /* This is intentional */
1172                 });
1173             } else {
1174               for (const connectorId of chargingStation.connectors.keys()) {
1175                 chargingStation.ocppRequestService
1176                   .requestHandler<
1177                     OCPP16StatusNotificationRequest,
1178                     OCPP16StatusNotificationResponse
1179                   >(
1180                     chargingStation,
1181                     OCPP16RequestCommand.STATUS_NOTIFICATION,
1182                     {
1183                       connectorId,
1184                       errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
1185                       status: chargingStation.getConnectorStatus(connectorId).status,
1186                     },
1187                     {
1188                       triggerMessage: true,
1189                     }
1190                   )
1191                   .catch(() => {
1192                     /* This is intentional */
1193                   });
1194               }
1195             }
1196           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
1197           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
1198         default:
1199           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
1200       }
1201     } catch (error) {
1202       return this.handleIncomingRequestError(
1203         chargingStation,
1204         OCPP16IncomingRequestCommand.TRIGGER_MESSAGE,
1205         error as Error,
1206         { errorResponse: Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED }
1207       );
1208     }
1209   }
1210 }