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 ${commandName} PDU validation`
 373     );
 374     return false;
 375   }
 376
 377   // Simulate charging station restart
 378   private handleRequestReset(
 379     chargingStation: ChargingStation,
 380     commandPayload: ResetRequest
 381   ): DefaultResponse {
 382     this.asyncResource
 383       .runInAsyncScope(
 384         chargingStation.reset.bind(chargingStation) as (
 385           this: ChargingStation,
 386           ...args: any[]
 387         ) => Promise<void>,
 388         chargingStation,
 389         (commandPayload.type + 'Reset') as OCPP16StopTransactionReason
 390       )
 391       .catch(() => {
 392         /* This is intentional */
 393       });
 394     logger.info(
 395       `${chargingStation.logPrefix()} ${
 396         commandPayload.type
 397       } reset command received, simulating it. The station will be back online in ${Utils.formatDurationMilliSeconds(
 398         chargingStation.stationInfo.resetTime
 399       )}`
 400     );
 401     return Constants.OCPP_RESPONSE_ACCEPTED;
 402   }
 403
 404   private handleRequestClearCache(chargingStation: ChargingStation): DefaultResponse {
 405     chargingStation.authorizedTagsCache.deleteAuthorizedTags(
 406       ChargingStationUtils.getAuthorizationFile(chargingStation.stationInfo)
 407     );
 408     return Constants.OCPP_RESPONSE_ACCEPTED;
 409   }
 410
 411   private async handleRequestUnlockConnector(
 412     chargingStation: ChargingStation,
 413     commandPayload: UnlockConnectorRequest
 414   ): Promise<UnlockConnectorResponse> {
 415     const connectorId = commandPayload.connectorId;
 416     if (connectorId === 0) {
 417       logger.error(
 418         chargingStation.logPrefix() + ' Trying to unlock connector ' + connectorId.toString()
 419       );
 420       return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
 421     }
 422     if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
 423       const stopResponse = await chargingStation.stopTransactionOnConnector(
 424         connectorId,
 425         OCPP16StopTransactionReason.UNLOCK_COMMAND
 426       );
 427       if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 428         return Constants.OCPP_RESPONSE_UNLOCKED;
 429       }
 430       return Constants.OCPP_RESPONSE_UNLOCK_FAILED;
 431     }
 432     await chargingStation.ocppRequestService.requestHandler<
 433       OCPP16StatusNotificationRequest,
 434       OCPP16StatusNotificationResponse
 435     >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 436       connectorId,
 437       status: OCPP16ChargePointStatus.AVAILABLE,
 438       errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 439     });
 440     chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 441     return Constants.OCPP_RESPONSE_UNLOCKED;
 442   }
 443
 444   private handleRequestGetConfiguration(
 445     chargingStation: ChargingStation,
 446     commandPayload: GetConfigurationRequest
 447   ): GetConfigurationResponse {
 448     const configurationKey: OCPPConfigurationKey[] = [];
 449     const unknownKey: string[] = [];
 450     if (Utils.isEmptyArray(commandPayload.key) === true) {
 451       for (const configuration of chargingStation.ocppConfiguration.configurationKey) {
 452         if (Utils.isUndefined(configuration.visible) === true) {
 453           configuration.visible = true;
 454         }
 455         if (configuration.visible === false) {
 456           continue;
 457         }
 458         configurationKey.push({
 459           key: configuration.key,
 460           readonly: configuration.readonly,
 461           value: configuration.value,
 462         });
 463       }
 464     } else {
 465       for (const key of commandPayload.key) {
 466         const keyFound = ChargingStationConfigurationUtils.getConfigurationKey(
 467           chargingStation,
 468           key
 469         );
 470         if (keyFound) {
 471           if (Utils.isUndefined(keyFound.visible) === true) {
 472             keyFound.visible = true;
 473           }
 474           if (keyFound.visible === false) {
 475             continue;
 476           }
 477           configurationKey.push({
 478             key: keyFound.key,
 479             readonly: keyFound.readonly,
 480             value: keyFound.value,
 481           });
 482         } else {
 483           unknownKey.push(key);
 484         }
 485       }
 486     }
 487     return {
 488       configurationKey,
 489       unknownKey,
 490     };
 491   }
 492
 493   private handleRequestChangeConfiguration(
 494     chargingStation: ChargingStation,
 495     commandPayload: ChangeConfigurationRequest
 496   ): ChangeConfigurationResponse {
 497     const keyToChange = ChargingStationConfigurationUtils.getConfigurationKey(
 498       chargingStation,
 499       commandPayload.key,
 500       true
 501     );
 502     if (!keyToChange) {
 503       return Constants.OCPP_CONFIGURATION_RESPONSE_NOT_SUPPORTED;
 504     } else if (keyToChange && keyToChange.readonly) {
 505       return Constants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
 506     } else if (keyToChange && !keyToChange.readonly) {
 507       let valueChanged = false;
 508       if (keyToChange.value !== commandPayload.value) {
 509         ChargingStationConfigurationUtils.setConfigurationKeyValue(
 510           chargingStation,
 511           commandPayload.key,
 512           commandPayload.value,
 513           true
 514         );
 515         valueChanged = true;
 516       }
 517       let triggerHeartbeatRestart = false;
 518       if (keyToChange.key === OCPP16StandardParametersKey.HeartBeatInterval && valueChanged) {
 519         ChargingStationConfigurationUtils.setConfigurationKeyValue(
 520           chargingStation,
 521           OCPP16StandardParametersKey.HeartbeatInterval,
 522           commandPayload.value
 523         );
 524         triggerHeartbeatRestart = true;
 525       }
 526       if (keyToChange.key === OCPP16StandardParametersKey.HeartbeatInterval && valueChanged) {
 527         ChargingStationConfigurationUtils.setConfigurationKeyValue(
 528           chargingStation,
 529           OCPP16StandardParametersKey.HeartBeatInterval,
 530           commandPayload.value
 531         );
 532         triggerHeartbeatRestart = true;
 533       }
 534       if (triggerHeartbeatRestart) {
 535         chargingStation.restartHeartbeat();
 536       }
 537       if (keyToChange.key === OCPP16StandardParametersKey.WebSocketPingInterval && valueChanged) {
 538         chargingStation.restartWebSocketPing();
 539       }
 540       if (keyToChange.reboot) {
 541         return Constants.OCPP_CONFIGURATION_RESPONSE_REBOOT_REQUIRED;
 542       }
 543       return Constants.OCPP_CONFIGURATION_RESPONSE_ACCEPTED;
 544     }
 545   }
 546
 547   private handleRequestSetChargingProfile(
 548     chargingStation: ChargingStation,
 549     commandPayload: SetChargingProfileRequest
 550   ): SetChargingProfileResponse {
 551     if (
 552       OCPP16ServiceUtils.checkFeatureProfile(
 553         chargingStation,
 554         OCPP16SupportedFeatureProfiles.SmartCharging,
 555         OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE
 556       ) === false
 557     ) {
 558       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_NOT_SUPPORTED;
 559     }
 560     if (chargingStation.connectors.has(commandPayload.connectorId) === false) {
 561       logger.error(
 562         `${chargingStation.logPrefix()} Trying to set charging profile(s) to a non existing connector Id ${
 563           commandPayload.connectorId
 564         }`
 565       );
 566       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 567     }
 568     if (
 569       commandPayload.csChargingProfiles.chargingProfilePurpose ===
 570         ChargingProfilePurposeType.CHARGE_POINT_MAX_PROFILE &&
 571       commandPayload.connectorId !== 0
 572     ) {
 573       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 574     }
 575     if (
 576       commandPayload.csChargingProfiles.chargingProfilePurpose ===
 577         ChargingProfilePurposeType.TX_PROFILE &&
 578       (commandPayload.connectorId === 0 ||
 579         chargingStation.getConnectorStatus(commandPayload.connectorId)?.transactionStarted ===
 580           false)
 581     ) {
 582       logger.error(
 583         `${chargingStation.logPrefix()} Trying to set transaction charging profile(s) on connector ${
 584           commandPayload.connectorId
 585         } without a started transaction`
 586       );
 587       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 588     }
 589     OCPP16ServiceUtils.setChargingProfile(
 590       chargingStation,
 591       commandPayload.connectorId,
 592       commandPayload.csChargingProfiles
 593     );
 594     logger.debug(
 595       `${chargingStation.logPrefix()} Charging profile(s) set on connector id ${
 596         commandPayload.connectorId
 597       }, dump their stack: %j`,
 598       chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles
 599     );
 600     return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 601   }
 602
 603   private handleRequestClearChargingProfile(
 604     chargingStation: ChargingStation,
 605     commandPayload: ClearChargingProfileRequest
 606   ): ClearChargingProfileResponse {
 607     if (
 608       OCPP16ServiceUtils.checkFeatureProfile(
 609         chargingStation,
 610         OCPP16SupportedFeatureProfiles.SmartCharging,
 611         OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE
 612       ) === false
 613     ) {
 614       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 615     }
 616     if (chargingStation.connectors.has(commandPayload.connectorId) === false) {
 617       logger.error(
 618         `${chargingStation.logPrefix()} Trying to clear a charging profile(s) to a non existing connector Id ${
 619           commandPayload.connectorId
 620         }`
 621       );
 622       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 623     }
 624     const connectorStatus = chargingStation.getConnectorStatus(commandPayload.connectorId);
 625     if (commandPayload.connectorId && !Utils.isEmptyArray(connectorStatus.chargingProfiles)) {
 626       connectorStatus.chargingProfiles = [];
 627       logger.debug(
 628         `${chargingStation.logPrefix()} Charging profile(s) cleared on connector id ${
 629           commandPayload.connectorId
 630         }, dump their stack: %j`,
 631         connectorStatus.chargingProfiles
 632       );
 633       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 634     }
 635     if (!commandPayload.connectorId) {
 636       let clearedCP = false;
 637       for (const connectorId of chargingStation.connectors.keys()) {
 638         if (!Utils.isEmptyArray(chargingStation.getConnectorStatus(connectorId).chargingProfiles)) {
 639           chargingStation
 640             .getConnectorStatus(connectorId)
 641             .chargingProfiles?.forEach((chargingProfile: OCPP16ChargingProfile, index: number) => {
 642               let clearCurrentCP = false;
 643               if (chargingProfile.chargingProfileId === commandPayload.id) {
 644                 clearCurrentCP = true;
 645               }
 646               if (
 647                 !commandPayload.chargingProfilePurpose &&
 648                 chargingProfile.stackLevel === commandPayload.stackLevel
 649               ) {
 650                 clearCurrentCP = true;
 651               }
 652               if (
 653                 !chargingProfile.stackLevel &&
 654                 chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose
 655               ) {
 656                 clearCurrentCP = true;
 657               }
 658               if (
 659                 chargingProfile.stackLevel === commandPayload.stackLevel &&
 660                 chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose
 661               ) {
 662                 clearCurrentCP = true;
 663               }
 664               if (clearCurrentCP) {
 665                 connectorStatus.chargingProfiles.splice(index, 1);
 666                 logger.debug(
 667                   `${chargingStation.logPrefix()} Matching charging profile(s) cleared on connector id ${
 668                     commandPayload.connectorId
 669                   }, dump their stack: %j`,
 670                   connectorStatus.chargingProfiles
 671                 );
 672                 clearedCP = true;
 673               }
 674             });
 675         }
 676       }
 677       if (clearedCP) {
 678         return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 679       }
 680     }
 681     return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 682   }
 683
 684   private async handleRequestChangeAvailability(
 685     chargingStation: ChargingStation,
 686     commandPayload: ChangeAvailabilityRequest
 687   ): Promise<ChangeAvailabilityResponse> {
 688     const connectorId: number = commandPayload.connectorId;
 689     if (!chargingStation.getConnectorStatus(connectorId)) {
 690       logger.error(
 691         `${chargingStation.logPrefix()} Trying to change the availability of a non existing connector Id ${connectorId.toString()}`
 692       );
 693       return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 694     }
 695     const chargePointStatus: OCPP16ChargePointStatus =
 696       commandPayload.type === OCPP16AvailabilityType.OPERATIVE
 697         ? OCPP16ChargePointStatus.AVAILABLE
 698         : OCPP16ChargePointStatus.UNAVAILABLE;
 699     if (connectorId === 0) {
 700       let response: ChangeAvailabilityResponse = Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 701       for (const id of chargingStation.connectors.keys()) {
 702         if (chargingStation.getConnectorStatus(id)?.transactionStarted === true) {
 703           response = Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 704         }
 705         chargingStation.getConnectorStatus(id).availability = commandPayload.type;
 706         if (response === Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED) {
 707           await chargingStation.ocppRequestService.requestHandler<
 708             OCPP16StatusNotificationRequest,
 709             OCPP16StatusNotificationResponse
 710           >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 711             connectorId: id,
 712             status: chargePointStatus,
 713             errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 714           });
 715           chargingStation.getConnectorStatus(id).status = chargePointStatus;
 716         }
 717       }
 718       return response;
 719     } else if (
 720       connectorId > 0 &&
 721       (chargingStation.isChargingStationAvailable() === true ||
 722         (chargingStation.isChargingStationAvailable() === false &&
 723           commandPayload.type === OCPP16AvailabilityType.INOPERATIVE))
 724     ) {
 725       if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
 726         chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 727         return Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 728       }
 729       chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 730       await chargingStation.ocppRequestService.requestHandler<
 731         OCPP16StatusNotificationRequest,
 732         OCPP16StatusNotificationResponse
 733       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 734         connectorId,
 735         status: chargePointStatus,
 736         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 737       });
 738       chargingStation.getConnectorStatus(connectorId).status = chargePointStatus;
 739       return Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 740     }
 741     return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 742   }
 743
 744   private async handleRequestRemoteStartTransaction(
 745     chargingStation: ChargingStation,
 746     commandPayload: RemoteStartTransactionRequest
 747   ): Promise<DefaultResponse> {
 748     const transactionConnectorId = commandPayload.connectorId;
 749     if (chargingStation.connectors.has(transactionConnectorId) === true) {
 750       const remoteStartTransactionLogMsg =
 751         chargingStation.logPrefix() +
 752         ' Transaction remotely STARTED on ' +
 753         chargingStation.stationInfo.chargingStationId +
 754         '#' +
 755         transactionConnectorId.toString() +
 756         " for idTag '" +
 757         commandPayload.idTag +
 758         "'";
 759       await chargingStation.ocppRequestService.requestHandler<
 760         OCPP16StatusNotificationRequest,
 761         OCPP16StatusNotificationResponse
 762       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 763         connectorId: transactionConnectorId,
 764         status: OCPP16ChargePointStatus.PREPARING,
 765         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 766       });
 767       const connectorStatus = chargingStation.getConnectorStatus(transactionConnectorId);
 768       connectorStatus.status = OCPP16ChargePointStatus.PREPARING;
 769       if (chargingStation.isChargingStationAvailable() === true) {
 770         // Check if authorized
 771         if (chargingStation.getAuthorizeRemoteTxRequests() === true) {
 772           let authorized = false;
 773           if (
 774             chargingStation.getLocalAuthListEnabled() === true &&
 775             chargingStation.hasAuthorizedTags() === true &&
 776             chargingStation.authorizedTagsCache
 777               .getAuthorizedTags(
 778                 ChargingStationUtils.getAuthorizationFile(chargingStation.stationInfo)
 779               )
 780               .find((idTag) => idTag === commandPayload.idTag)
 781           ) {
 782             connectorStatus.localAuthorizeIdTag = commandPayload.idTag;
 783             connectorStatus.idTagLocalAuthorized = true;
 784             authorized = true;
 785           } else if (chargingStation.getMustAuthorizeAtRemoteStart() === true) {
 786             connectorStatus.authorizeIdTag = commandPayload.idTag;
 787             const authorizeResponse: OCPP16AuthorizeResponse =
 788               await chargingStation.ocppRequestService.requestHandler<
 789                 OCPP16AuthorizeRequest,
 790                 OCPP16AuthorizeResponse
 791               >(chargingStation, OCPP16RequestCommand.AUTHORIZE, {
 792                 idTag: commandPayload.idTag,
 793               });
 794             if (authorizeResponse?.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 795               authorized = true;
 796             }
 797           } else {
 798             logger.warn(
 799               `${chargingStation.logPrefix()} The charging station configuration expects authorize at remote start transaction but local authorization or authorize isn't enabled`
 800             );
 801           }
 802           if (authorized === true) {
 803             // Authorization successful, start transaction
 804             if (
 805               this.setRemoteStartTransactionChargingProfile(
 806                 chargingStation,
 807                 transactionConnectorId,
 808                 commandPayload.chargingProfile
 809               ) === true
 810             ) {
 811               connectorStatus.transactionRemoteStarted = true;
 812               if (
 813                 (
 814                   await chargingStation.ocppRequestService.requestHandler<
 815                     OCPP16StartTransactionRequest,
 816                     OCPP16StartTransactionResponse
 817                   >(chargingStation, OCPP16RequestCommand.START_TRANSACTION, {
 818                     connectorId: transactionConnectorId,
 819                     idTag: commandPayload.idTag,
 820                   })
 821                 ).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED
 822               ) {
 823                 logger.debug(remoteStartTransactionLogMsg);
 824                 return Constants.OCPP_RESPONSE_ACCEPTED;
 825               }
 826               return this.notifyRemoteStartTransactionRejected(
 827                 chargingStation,
 828                 transactionConnectorId,
 829                 commandPayload.idTag
 830               );
 831             }
 832             return this.notifyRemoteStartTransactionRejected(
 833               chargingStation,
 834               transactionConnectorId,
 835               commandPayload.idTag
 836             );
 837           }
 838           return this.notifyRemoteStartTransactionRejected(
 839             chargingStation,
 840             transactionConnectorId,
 841             commandPayload.idTag
 842           );
 843         }
 844         // No authorization check required, start transaction
 845         if (
 846           this.setRemoteStartTransactionChargingProfile(
 847             chargingStation,
 848             transactionConnectorId,
 849             commandPayload.chargingProfile
 850           ) === true
 851         ) {
 852           connectorStatus.transactionRemoteStarted = true;
 853           if (
 854             (
 855               await chargingStation.ocppRequestService.requestHandler<
 856                 OCPP16StartTransactionRequest,
 857                 OCPP16StartTransactionResponse
 858               >(chargingStation, OCPP16RequestCommand.START_TRANSACTION, {
 859                 connectorId: transactionConnectorId,
 860                 idTag: commandPayload.idTag,
 861               })
 862             ).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED
 863           ) {
 864             logger.debug(remoteStartTransactionLogMsg);
 865             return Constants.OCPP_RESPONSE_ACCEPTED;
 866           }
 867           return this.notifyRemoteStartTransactionRejected(
 868             chargingStation,
 869             transactionConnectorId,
 870             commandPayload.idTag
 871           );
 872         }
 873         return this.notifyRemoteStartTransactionRejected(
 874           chargingStation,
 875           transactionConnectorId,
 876           commandPayload.idTag
 877         );
 878       }
 879       return this.notifyRemoteStartTransactionRejected(
 880         chargingStation,
 881         transactionConnectorId,
 882         commandPayload.idTag
 883       );
 884     }
 885     return this.notifyRemoteStartTransactionRejected(
 886       chargingStation,
 887       transactionConnectorId,
 888       commandPayload.idTag
 889     );
 890   }
 891
 892   private async notifyRemoteStartTransactionRejected(
 893     chargingStation: ChargingStation,
 894     connectorId: number,
 895     idTag: string
 896   ): Promise<DefaultResponse> {
 897     if (
 898       chargingStation.getConnectorStatus(connectorId).status !== OCPP16ChargePointStatus.AVAILABLE
 899     ) {
 900       await chargingStation.ocppRequestService.requestHandler<
 901         OCPP16StatusNotificationRequest,
 902         OCPP16StatusNotificationResponse
 903       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 904         connectorId,
 905         status: OCPP16ChargePointStatus.AVAILABLE,
 906         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 907       });
 908       chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 909     }
 910     logger.warn(
 911       chargingStation.logPrefix() +
 912         ' Remote starting transaction REJECTED on connector Id ' +
 913         connectorId.toString() +
 914         ", idTag '" +
 915         idTag +
 916         "', availability '" +
 917         chargingStation.getConnectorStatus(connectorId).availability +
 918         "', status '" +
 919         chargingStation.getConnectorStatus(connectorId).status +
 920         "'"
 921     );
 922     return Constants.OCPP_RESPONSE_REJECTED;
 923   }
 924
 925   private setRemoteStartTransactionChargingProfile(
 926     chargingStation: ChargingStation,
 927     connectorId: number,
 928     cp: OCPP16ChargingProfile
 929   ): boolean {
 930     if (cp && cp.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE) {
 931       OCPP16ServiceUtils.setChargingProfile(chargingStation, connectorId, cp);
 932       logger.debug(
 933         `${chargingStation.logPrefix()} Charging profile(s) set at remote start transaction on connector id ${connectorId}, dump their stack: %j`,
 934         chargingStation.getConnectorStatus(connectorId).chargingProfiles
 935       );
 936       return true;
 937     } else if (cp && cp.chargingProfilePurpose !== ChargingProfilePurposeType.TX_PROFILE) {
 938       logger.warn(
 939         `${chargingStation.logPrefix()} Not allowed to set ${
 940           cp.chargingProfilePurpose
 941         } charging profile(s) at remote start transaction`
 942       );
 943       return false;
 944     } else if (!cp) {
 945       return true;
 946     }
 947   }
 948
 949   private async handleRequestRemoteStopTransaction(
 950     chargingStation: ChargingStation,
 951     commandPayload: RemoteStopTransactionRequest
 952   ): Promise<DefaultResponse> {
 953     const transactionId = commandPayload.transactionId;
 954     for (const connectorId of chargingStation.connectors.keys()) {
 955       if (
 956         connectorId > 0 &&
 957         chargingStation.getConnectorStatus(connectorId)?.transactionId === transactionId
 958       ) {
 959         await chargingStation.ocppRequestService.requestHandler<
 960           OCPP16StatusNotificationRequest,
 961           OCPP16StatusNotificationResponse
 962         >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 963           connectorId,
 964           status: OCPP16ChargePointStatus.FINISHING,
 965           errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 966         });
 967         chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.FINISHING;
 968         const stopResponse = await chargingStation.stopTransactionOnConnector(
 969           connectorId,
 970           OCPP16StopTransactionReason.REMOTE
 971         );
 972         if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 973           return Constants.OCPP_RESPONSE_ACCEPTED;
 974         }
 975         return Constants.OCPP_RESPONSE_REJECTED;
 976       }
 977     }
 978     logger.warn(
 979       chargingStation.logPrefix() +
 980         ' Trying to remote stop a non existing transaction ' +
 981         transactionId.toString()
 982     );
 983     return Constants.OCPP_RESPONSE_REJECTED;
 984   }
 985
 986   private async handleRequestGetDiagnostics(
 987     chargingStation: ChargingStation,
 988     commandPayload: GetDiagnosticsRequest
 989   ): Promise<GetDiagnosticsResponse> {
 990     if (
 991       OCPP16ServiceUtils.checkFeatureProfile(
 992         chargingStation,
 993         OCPP16SupportedFeatureProfiles.FirmwareManagement,
 994         OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
 995       ) === false
 996     ) {
 997       return Constants.OCPP_RESPONSE_EMPTY;
 998     }
 999     logger.debug(
1000       chargingStation.logPrefix() +
1001         ' ' +
1002         OCPP16IncomingRequestCommand.GET_DIAGNOSTICS +
1003         ' request received: %j',
1004       commandPayload
1005     );
1006     const uri = new URL(commandPayload.location);
1007     if (uri.protocol.startsWith('ftp:')) {
1008       let ftpClient: Client;
1009       try {
1010         const logFiles = fs
1011           .readdirSync(path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../../'))
1012           .filter((file) => file.endsWith('.log'))
1013           .map((file) => path.join('./', file));
1014         const diagnosticsArchive = chargingStation.stationInfo.chargingStationId + '_logs.tar.gz';
1015         tar.create({ gzip: true }, logFiles).pipe(fs.createWriteStream(diagnosticsArchive));
1016         ftpClient = new Client();
1017         const accessResponse = await ftpClient.access({
1018           host: uri.host,
1019           ...(!Utils.isEmptyString(uri.port) && { port: Utils.convertToInt(uri.port) }),
1020           ...(!Utils.isEmptyString(uri.username) && { user: uri.username }),
1021           ...(!Utils.isEmptyString(uri.password) && { password: uri.password }),
1022         });
1023         let uploadResponse: FTPResponse;
1024         if (accessResponse.code === 220) {
1025           // eslint-disable-next-line @typescript-eslint/no-misused-promises
1026           ftpClient.trackProgress(async (info) => {
1027             logger.info(
1028               `${chargingStation.logPrefix()} ${
1029                 info.bytes / 1024
1030               } bytes transferred from diagnostics archive ${info.name}`
1031             );
1032             await chargingStation.ocppRequestService.requestHandler<
1033               DiagnosticsStatusNotificationRequest,
1034               DiagnosticsStatusNotificationResponse
1035             >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1036               status: OCPP16DiagnosticsStatus.Uploading,
1037             });
1038           });
1039           uploadResponse = await ftpClient.uploadFrom(
1040             path.join(
1041               path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../../'),
1042               diagnosticsArchive
1043             ),
1044             uri.pathname + diagnosticsArchive
1045           );
1046           if (uploadResponse.code === 226) {
1047             await chargingStation.ocppRequestService.requestHandler<
1048               DiagnosticsStatusNotificationRequest,
1049               DiagnosticsStatusNotificationResponse
1050             >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1051               status: OCPP16DiagnosticsStatus.Uploaded,
1052             });
1053             if (ftpClient) {
1054               ftpClient.close();
1055             }
1056             return { fileName: diagnosticsArchive };
1057           }
1058           throw new OCPPError(
1059             ErrorType.GENERIC_ERROR,
1060             `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${
1061               uploadResponse?.code && '|' + uploadResponse?.code.toString()
1062             }`,
1063             OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
1064           );
1065         }
1066         throw new OCPPError(
1067           ErrorType.GENERIC_ERROR,
1068           `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${
1069             uploadResponse?.code && '|' + uploadResponse?.code.toString()
1070           }`,
1071           OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
1072         );
1073       } catch (error) {
1074         await chargingStation.ocppRequestService.requestHandler<
1075           DiagnosticsStatusNotificationRequest,
1076           DiagnosticsStatusNotificationResponse
1077         >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1078           status: OCPP16DiagnosticsStatus.UploadFailed,
1079         });
1080         if (ftpClient) {
1081           ftpClient.close();
1082         }
1083         return this.handleIncomingRequestError(
1084           chargingStation,
1085           OCPP16IncomingRequestCommand.GET_DIAGNOSTICS,
1086           error as Error,
1087           { errorResponse: Constants.OCPP_RESPONSE_EMPTY }
1088         );
1089       }
1090     } else {
1091       logger.error(
1092         `${chargingStation.logPrefix()} Unsupported protocol ${
1093           uri.protocol
1094         } to transfer the diagnostic logs archive`
1095       );
1096       await chargingStation.ocppRequestService.requestHandler<
1097         DiagnosticsStatusNotificationRequest,
1098         DiagnosticsStatusNotificationResponse
1099       >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
1100         status: OCPP16DiagnosticsStatus.UploadFailed,
1101       });
1102       return Constants.OCPP_RESPONSE_EMPTY;
1103     }
1104   }
1105
1106   private handleRequestTriggerMessage(
1107     chargingStation: ChargingStation,
1108     commandPayload: OCPP16TriggerMessageRequest
1109   ): OCPP16TriggerMessageResponse {
1110     if (
1111       !OCPP16ServiceUtils.checkFeatureProfile(
1112         chargingStation,
1113         OCPP16SupportedFeatureProfiles.RemoteTrigger,
1114         OCPP16IncomingRequestCommand.TRIGGER_MESSAGE
1115       )
1116     ) {
1117       return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
1118     }
1119     // TODO: factor out the check on connector id
1120     if (commandPayload?.connectorId < 0) {
1121       logger.warn(
1122         `${chargingStation.logPrefix()} ${
1123           OCPP16IncomingRequestCommand.TRIGGER_MESSAGE
1124         } incoming request received with invalid connectorId ${commandPayload.connectorId}`
1125       );
1126       return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED;
1127     }
1128     try {
1129       switch (commandPayload.requestedMessage) {
1130         case MessageTrigger.BootNotification:
1131           setTimeout(() => {
1132             chargingStation.ocppRequestService
1133               .requestHandler<OCPP16BootNotificationRequest, OCPP16BootNotificationResponse>(
1134                 chargingStation,
1135                 OCPP16RequestCommand.BOOT_NOTIFICATION,
1136                 chargingStation.bootNotificationRequest,
1137                 { skipBufferingOnError: true, triggerMessage: true }
1138               )
1139               .then((response) => {
1140                 chargingStation.bootNotificationResponse = response;
1141               })
1142               .catch(() => {
1143                 /* This is intentional */
1144               });
1145           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
1146           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
1147         case MessageTrigger.Heartbeat:
1148           setTimeout(() => {
1149             chargingStation.ocppRequestService
1150               .requestHandler<OCPP16HeartbeatRequest, OCPP16HeartbeatResponse>(
1151                 chargingStation,
1152                 OCPP16RequestCommand.HEARTBEAT,
1153                 null,
1154                 {
1155                   triggerMessage: true,
1156                 }
1157               )
1158               .catch(() => {
1159                 /* This is intentional */
1160               });
1161           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
1162           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
1163         case MessageTrigger.StatusNotification:
1164           setTimeout(() => {
1165             if (commandPayload?.connectorId) {
1166               chargingStation.ocppRequestService
1167                 .requestHandler<OCPP16StatusNotificationRequest, OCPP16StatusNotificationResponse>(
1168                   chargingStation,
1169                   OCPP16RequestCommand.STATUS_NOTIFICATION,
1170                   {
1171                     connectorId: commandPayload.connectorId,
1172                     errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
1173                     status: chargingStation.getConnectorStatus(commandPayload.connectorId).status,
1174                   },
1175                   {
1176                     triggerMessage: true,
1177                   }
1178                 )
1179                 .catch(() => {
1180                   /* This is intentional */
1181                 });
1182             } else {
1183               for (const connectorId of chargingStation.connectors.keys()) {
1184                 chargingStation.ocppRequestService
1185                   .requestHandler<
1186                     OCPP16StatusNotificationRequest,
1187                     OCPP16StatusNotificationResponse
1188                   >(
1189                     chargingStation,
1190                     OCPP16RequestCommand.STATUS_NOTIFICATION,
1191                     {
1192                       connectorId,
1193                       errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
1194                       status: chargingStation.getConnectorStatus(connectorId).status,
1195                     },
1196                     {
1197                       triggerMessage: true,
1198                     }
1199                   )
1200                   .catch(() => {
1201                     /* This is intentional */
1202                   });
1203               }
1204             }
1205           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
1206           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
1207         default:
1208           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
1209       }
1210     } catch (error) {
1211       return this.handleIncomingRequestError(
1212         chargingStation,
1213         OCPP16IncomingRequestCommand.TRIGGER_MESSAGE,
1214         error as Error,
1215         { errorResponse: Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED }
1216       );
1217     }
1218   }
1219 }