src/charging-station/ocpp/1.6/OCPP16ResponseService.ts

   1 // Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
   2
   3 import fs from 'fs';
   4 import path from 'path';
   5 import { fileURLToPath } from 'url';
   6
   7 import type { JSONSchemaType } from 'ajv';
   8
   9 import OCPPError from '../../../exception/OCPPError';
  10 import type { JsonObject, JsonType } from '../../../types/JsonType';
  11 import { OCPP16ChargePointErrorCode } from '../../../types/ocpp/1.6/ChargePointErrorCode';
  12 import { OCPP16ChargePointStatus } from '../../../types/ocpp/1.6/ChargePointStatus';
  13 import { OCPP16StandardParametersKey } from '../../../types/ocpp/1.6/Configuration';
  14 import type {
  15   OCPP16MeterValuesRequest,
  16   OCPP16MeterValuesResponse,
  17 } from '../../../types/ocpp/1.6/MeterValues';
  18 import {
  19   OCPP16BootNotificationRequest,
  20   OCPP16RequestCommand,
  21   OCPP16StatusNotificationRequest,
  22 } from '../../../types/ocpp/1.6/Requests';
  23 import {
  24   DiagnosticsStatusNotificationResponse,
  25   OCPP16BootNotificationResponse,
  26   OCPP16HeartbeatResponse,
  27   OCPP16RegistrationStatus,
  28   OCPP16StatusNotificationResponse,
  29 } from '../../../types/ocpp/1.6/Responses';
  30 import {
  31   OCPP16AuthorizationStatus,
  32   OCPP16AuthorizeRequest,
  33   OCPP16AuthorizeResponse,
  34   OCPP16StartTransactionRequest,
  35   OCPP16StartTransactionResponse,
  36   OCPP16StopTransactionRequest,
  37   OCPP16StopTransactionResponse,
  38 } from '../../../types/ocpp/1.6/Transaction';
  39 import { ErrorType } from '../../../types/ocpp/ErrorType';
  40 import type { ResponseHandler } from '../../../types/ocpp/Responses';
  41 import logger from '../../../utils/Logger';
  42 import Utils from '../../../utils/Utils';
  43 import type ChargingStation from '../../ChargingStation';
  44 import { ChargingStationConfigurationUtils } from '../../ChargingStationConfigurationUtils';
  45 import { ChargingStationUtils } from '../../ChargingStationUtils';
  46 import OCPPResponseService from '../OCPPResponseService';
  47 import { OCPP16ServiceUtils } from './OCPP16ServiceUtils';
  48
  49 const moduleName = 'OCPP16ResponseService';
  50
  51 export default class OCPP16ResponseService extends OCPPResponseService {
  52   private responseHandlers: Map<OCPP16RequestCommand, ResponseHandler>;
  53   private jsonSchemas: Map<OCPP16RequestCommand, JSONSchemaType<JsonObject>>;
  54
  55   public constructor() {
  56     if (new.target?.name === moduleName) {
  57       throw new TypeError(`Cannot construct ${new.target?.name} instances directly`);
  58     }
  59     super();
  60     this.responseHandlers = new Map<OCPP16RequestCommand, ResponseHandler>([
  61       [OCPP16RequestCommand.BOOT_NOTIFICATION, this.handleResponseBootNotification.bind(this)],
  62       [OCPP16RequestCommand.HEARTBEAT, this.emptyResponseHandler.bind(this)],
  63       [OCPP16RequestCommand.AUTHORIZE, this.handleResponseAuthorize.bind(this)],
  64       [OCPP16RequestCommand.START_TRANSACTION, this.handleResponseStartTransaction.bind(this)],
  65       [OCPP16RequestCommand.STOP_TRANSACTION, this.handleResponseStopTransaction.bind(this)],
  66       [OCPP16RequestCommand.STATUS_NOTIFICATION, this.emptyResponseHandler.bind(this)],
  67       [OCPP16RequestCommand.METER_VALUES, this.emptyResponseHandler.bind(this)],
  68       [OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, this.emptyResponseHandler.bind(this)],
  69     ]);
  70     this.jsonSchemas = new Map<OCPP16RequestCommand, JSONSchemaType<JsonObject>>([
  71       [
  72         OCPP16RequestCommand.BOOT_NOTIFICATION,
  73         JSON.parse(
  74           fs.readFileSync(
  75             path.resolve(
  76               path.dirname(fileURLToPath(import.meta.url)),
  77               '../../../assets/json-schemas/ocpp/1.6/BootNotificationResponse.json'
  78             ),
  79             'utf8'
  80           )
  81         ) as JSONSchemaType<OCPP16BootNotificationResponse>,
  82       ],
  83       [
  84         OCPP16RequestCommand.HEARTBEAT,
  85         JSON.parse(
  86           fs.readFileSync(
  87             path.resolve(
  88               path.dirname(fileURLToPath(import.meta.url)),
  89               '../../../assets/json-schemas/ocpp/1.6/HeartbeatResponse.json'
  90             ),
  91             'utf8'
  92           )
  93         ) as JSONSchemaType<OCPP16HeartbeatResponse>,
  94       ],
  95       [
  96         OCPP16RequestCommand.AUTHORIZE,
  97         JSON.parse(
  98           fs.readFileSync(
  99             path.resolve(
 100               path.dirname(fileURLToPath(import.meta.url)),
 101               '../../../assets/json-schemas/ocpp/1.6/AuthorizeResponse.json'
 102             ),
 103             'utf8'
 104           )
 105         ) as JSONSchemaType<OCPP16AuthorizeResponse>,
 106       ],
 107       [
 108         OCPP16RequestCommand.START_TRANSACTION,
 109         JSON.parse(
 110           fs.readFileSync(
 111             path.resolve(
 112               path.dirname(fileURLToPath(import.meta.url)),
 113               '../../../assets/json-schemas/ocpp/1.6/StartTransactionResponse.json'
 114             ),
 115             'utf8'
 116           )
 117         ) as JSONSchemaType<OCPP16StartTransactionResponse>,
 118       ],
 119       [
 120         OCPP16RequestCommand.STOP_TRANSACTION,
 121         JSON.parse(
 122           fs.readFileSync(
 123             path.resolve(
 124               path.dirname(fileURLToPath(import.meta.url)),
 125               '../../../assets/json-schemas/ocpp/1.6/StopTransactionResponse.json'
 126             ),
 127             'utf8'
 128           )
 129         ) as JSONSchemaType<OCPP16StopTransactionResponse>,
 130       ],
 131       [
 132         OCPP16RequestCommand.STATUS_NOTIFICATION,
 133         JSON.parse(
 134           fs.readFileSync(
 135             path.resolve(
 136               path.dirname(fileURLToPath(import.meta.url)),
 137               '../../../assets/json-schemas/ocpp/1.6/StatusNotificationResponse.json'
 138             ),
 139             'utf8'
 140           )
 141         ) as JSONSchemaType<OCPP16StatusNotificationResponse>,
 142       ],
 143       [
 144         OCPP16RequestCommand.METER_VALUES,
 145         JSON.parse(
 146           fs.readFileSync(
 147             path.resolve(
 148               path.dirname(fileURLToPath(import.meta.url)),
 149               '../../../assets/json-schemas/ocpp/1.6/MeterValuesResponse.json'
 150             ),
 151             'utf8'
 152           )
 153         ) as JSONSchemaType<OCPP16MeterValuesResponse>,
 154       ],
 155       [
 156         OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION,
 157         JSON.parse(
 158           fs.readFileSync(
 159             path.resolve(
 160               path.dirname(fileURLToPath(import.meta.url)),
 161               '../../../assets/json-schemas/ocpp/1.6/DiagnosticsStatusNotificationResponse.json'
 162             ),
 163             'utf8'
 164           )
 165         ) as JSONSchemaType<DiagnosticsStatusNotificationResponse>,
 166       ],
 167     ]);
 168     this.validatePayload.bind(this);
 169   }
 170
 171   public async responseHandler(
 172     chargingStation: ChargingStation,
 173     commandName: OCPP16RequestCommand,
 174     payload: JsonType,
 175     requestPayload: JsonType
 176   ): Promise<void> {
 177     if (chargingStation.isRegistered() || commandName === OCPP16RequestCommand.BOOT_NOTIFICATION) {
 178       if (
 179         this.responseHandlers.has(commandName) &&
 180         ChargingStationUtils.isRequestCommandSupported(commandName, chargingStation)
 181       ) {
 182         try {
 183           this.validatePayload(chargingStation, commandName, payload);
 184           await this.responseHandlers.get(commandName)(chargingStation, payload, requestPayload);
 185         } catch (error) {
 186           logger.error(
 187             `${chargingStation.logPrefix()} ${moduleName}.responseHandler: Handle response error:`,
 188             error
 189           );
 190           throw error;
 191         }
 192       } else {
 193         // Throw exception
 194         throw new OCPPError(
 195           ErrorType.NOT_IMPLEMENTED,
 196           `${commandName} is not implemented to handle response PDU ${JSON.stringify(
 197             payload,
 198             null,
 199             2
 200           )}`,
 201           commandName,
 202           payload
 203         );
 204       }
 205     } else {
 206       throw new OCPPError(
 207         ErrorType.SECURITY_ERROR,
 208         `${commandName} cannot be issued to handle response PDU ${JSON.stringify(
 209           payload,
 210           null,
 211           2
 212         )} while the charging station is not registered on the central server. `,
 213         commandName,
 214         payload
 215       );
 216     }
 217   }
 218
 219   private validatePayload(
 220     chargingStation: ChargingStation,
 221     commandName: OCPP16RequestCommand,
 222     payload: JsonType
 223   ): boolean {
 224     if (this.jsonSchemas.has(commandName)) {
 225       return this.validateResponsePayload(
 226         chargingStation,
 227         commandName,
 228         this.jsonSchemas.get(commandName),
 229         payload
 230       );
 231     }
 232     logger.warn(
 233       `${chargingStation.logPrefix()} ${moduleName}.validatePayload: No JSON schema found for command ${commandName} PDU validation`
 234     );
 235     return false;
 236   }
 237
 238   private handleResponseBootNotification(
 239     chargingStation: ChargingStation,
 240     payload: OCPP16BootNotificationResponse
 241   ): void {
 242     if (payload.status === OCPP16RegistrationStatus.ACCEPTED) {
 243       ChargingStationConfigurationUtils.addConfigurationKey(
 244         chargingStation,
 245         OCPP16StandardParametersKey.HeartbeatInterval,
 246         payload.interval.toString(),
 247         {},
 248         { overwrite: true, save: true }
 249       );
 250       ChargingStationConfigurationUtils.addConfigurationKey(
 251         chargingStation,
 252         OCPP16StandardParametersKey.HeartBeatInterval,
 253         payload.interval.toString(),
 254         { visible: false },
 255         { overwrite: true, save: true }
 256       );
 257       chargingStation.heartbeatSetInterval
 258         ? chargingStation.restartHeartbeat()
 259         : chargingStation.startHeartbeat();
 260     }
 261     if (Object.values(OCPP16RegistrationStatus).includes(payload.status)) {
 262       const logMsg = `${chargingStation.logPrefix()} Charging station in '${
 263         payload.status
 264       }' state on the central server`;
 265       payload.status === OCPP16RegistrationStatus.REJECTED
 266         ? logger.warn(logMsg)
 267         : logger.info(logMsg);
 268     } else {
 269       logger.error(
 270         chargingStation.logPrefix() +
 271           ' Charging station boot notification response received: %j with undefined registration status',
 272         payload
 273       );
 274     }
 275   }
 276
 277   private handleResponseAuthorize(
 278     chargingStation: ChargingStation,
 279     payload: OCPP16AuthorizeResponse,
 280     requestPayload: OCPP16AuthorizeRequest
 281   ): void {
 282     let authorizeConnectorId: number;
 283     for (const connectorId of chargingStation.connectors.keys()) {
 284       if (
 285         connectorId > 0 &&
 286         chargingStation.getConnectorStatus(connectorId)?.authorizeIdTag === requestPayload.idTag
 287       ) {
 288         authorizeConnectorId = connectorId;
 289         break;
 290       }
 291     }
 292     const isAuthorizeConnectorIdDefined = authorizeConnectorId !== undefined;
 293     if (payload.idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED) {
 294       isAuthorizeConnectorIdDefined &&
 295         (chargingStation.getConnectorStatus(authorizeConnectorId).idTagAuthorized = true);
 296       logger.debug(
 297         `${chargingStation.logPrefix()} IdTag '${requestPayload.idTag}' accepted${
 298           isAuthorizeConnectorIdDefined ? ` on connector ${authorizeConnectorId}` : ''
 299         }`
 300       );
 301     } else {
 302       if (isAuthorizeConnectorIdDefined) {
 303         chargingStation.getConnectorStatus(authorizeConnectorId).idTagAuthorized = false;
 304         delete chargingStation.getConnectorStatus(authorizeConnectorId).authorizeIdTag;
 305       }
 306       logger.debug(
 307         `${chargingStation.logPrefix()} IdTag '${requestPayload.idTag}' rejected with status '${
 308           payload.idTagInfo.status
 309         }'${isAuthorizeConnectorIdDefined ? ` on connector ${authorizeConnectorId}` : ''}`
 310       );
 311     }
 312   }
 313
 314   private async handleResponseStartTransaction(
 315     chargingStation: ChargingStation,
 316     payload: OCPP16StartTransactionResponse,
 317     requestPayload: OCPP16StartTransactionRequest
 318   ): Promise<void> {
 319     const connectorId = requestPayload.connectorId;
 320
 321     let transactionConnectorId: number;
 322     for (const id of chargingStation.connectors.keys()) {
 323       if (id > 0 && id === connectorId) {
 324         transactionConnectorId = id;
 325         break;
 326       }
 327     }
 328     if (!transactionConnectorId) {
 329       logger.error(
 330         chargingStation.logPrefix() +
 331           ' Trying to start a transaction on a non existing connector Id ' +
 332           connectorId.toString()
 333       );
 334       return;
 335     }
 336     if (
 337       chargingStation.getConnectorStatus(connectorId).transactionRemoteStarted === true &&
 338       chargingStation.getAuthorizeRemoteTxRequests() &&
 339       chargingStation.getLocalAuthListEnabled() &&
 340       chargingStation.hasAuthorizedTags() &&
 341       chargingStation.getConnectorStatus(connectorId).idTagLocalAuthorized === false
 342     ) {
 343       logger.error(
 344         chargingStation.logPrefix() +
 345           ' Trying to start a transaction with a not local authorized idTag ' +
 346           chargingStation.getConnectorStatus(connectorId).localAuthorizeIdTag +
 347           ' on connector Id ' +
 348           connectorId.toString()
 349       );
 350       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 351       return;
 352     }
 353     if (
 354       chargingStation.getConnectorStatus(connectorId).transactionRemoteStarted === true &&
 355       chargingStation.getAuthorizeRemoteTxRequests() &&
 356       chargingStation.getMustAuthorizeAtRemoteStart() &&
 357       chargingStation.getConnectorStatus(connectorId).idTagLocalAuthorized === false &&
 358       chargingStation.getConnectorStatus(connectorId).idTagAuthorized === false
 359     ) {
 360       logger.error(
 361         chargingStation.logPrefix() +
 362           ' Trying to start a transaction with a not authorized idTag ' +
 363           chargingStation.getConnectorStatus(connectorId).authorizeIdTag +
 364           ' on connector Id ' +
 365           connectorId.toString()
 366       );
 367       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 368       return;
 369     }
 370     if (
 371       chargingStation.getConnectorStatus(connectorId).idTagAuthorized &&
 372       chargingStation.getConnectorStatus(connectorId).authorizeIdTag !== requestPayload.idTag
 373     ) {
 374       logger.error(
 375         chargingStation.logPrefix() +
 376           ' Trying to start a transaction with an idTag ' +
 377           requestPayload.idTag +
 378           ' different from the authorize request one ' +
 379           chargingStation.getConnectorStatus(connectorId).authorizeIdTag +
 380           ' on connector Id ' +
 381           connectorId.toString()
 382       );
 383       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 384       return;
 385     }
 386     if (
 387       chargingStation.getConnectorStatus(connectorId).idTagLocalAuthorized &&
 388       chargingStation.getConnectorStatus(connectorId).localAuthorizeIdTag !== requestPayload.idTag
 389     ) {
 390       logger.error(
 391         chargingStation.logPrefix() +
 392           ' Trying to start a transaction with an idTag ' +
 393           requestPayload.idTag +
 394           ' different from the local authorized one ' +
 395           chargingStation.getConnectorStatus(connectorId).localAuthorizeIdTag +
 396           ' on connector Id ' +
 397           connectorId.toString()
 398       );
 399       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 400       return;
 401     }
 402     if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
 403       logger.debug(
 404         chargingStation.logPrefix() +
 405           ' Trying to start a transaction on an already used connector ' +
 406           connectorId.toString() +
 407           ': %j',
 408         chargingStation.getConnectorStatus(connectorId)
 409       );
 410       return;
 411     }
 412     if (
 413       chargingStation.getConnectorStatus(connectorId)?.status !==
 414         OCPP16ChargePointStatus.AVAILABLE &&
 415       chargingStation.getConnectorStatus(connectorId)?.status !== OCPP16ChargePointStatus.PREPARING
 416     ) {
 417       logger.error(
 418         `${chargingStation.logPrefix()} Trying to start a transaction on connector ${connectorId.toString()} with status ${
 419           chargingStation.getConnectorStatus(connectorId)?.status
 420         }`
 421       );
 422       return;
 423     }
 424     // if (!Number.isInteger(payload.transactionId)) {
 425     //   logger.warn(
 426     //     `${chargingStation.logPrefix()} Trying to start a transaction on connector ${connectorId.toString()} with a non integer transaction Id ${
 427     //       payload.transactionId
 428     //     }, converting to integer`
 429     //   );
 430     //   payload.transactionId = Utils.convertToInt(payload.transactionId);
 431     // }
 432
 433     if (payload.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 434       chargingStation.getConnectorStatus(connectorId).transactionStarted = true;
 435       chargingStation.getConnectorStatus(connectorId).transactionId = payload.transactionId;
 436       chargingStation.getConnectorStatus(connectorId).transactionIdTag = requestPayload.idTag;
 437       chargingStation.getConnectorStatus(
 438         connectorId
 439       ).transactionEnergyActiveImportRegisterValue = 0;
 440       chargingStation.getConnectorStatus(connectorId).transactionBeginMeterValue =
 441         OCPP16ServiceUtils.buildTransactionBeginMeterValue(
 442           chargingStation,
 443           connectorId,
 444           requestPayload.meterStart
 445         );
 446       chargingStation.getBeginEndMeterValues() &&
 447         (await chargingStation.ocppRequestService.requestHandler<
 448           OCPP16MeterValuesRequest,
 449           OCPP16MeterValuesResponse
 450         >(chargingStation, OCPP16RequestCommand.METER_VALUES, {
 451           connectorId,
 452           transactionId: payload.transactionId,
 453           meterValue: [chargingStation.getConnectorStatus(connectorId).transactionBeginMeterValue],
 454         }));
 455       await chargingStation.ocppRequestService.requestHandler<
 456         OCPP16StatusNotificationRequest,
 457         OCPP16StatusNotificationResponse
 458       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 459         connectorId,
 460         status: OCPP16ChargePointStatus.CHARGING,
 461         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 462       });
 463       chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.CHARGING;
 464       logger.info(
 465         chargingStation.logPrefix() +
 466           ' Transaction ' +
 467           payload.transactionId.toString() +
 468           ' STARTED on ' +
 469           chargingStation.stationInfo.chargingStationId +
 470           '#' +
 471           connectorId.toString() +
 472           " for idTag '" +
 473           requestPayload.idTag +
 474           "'"
 475       );
 476       if (chargingStation.stationInfo.powerSharedByConnectors) {
 477         chargingStation.powerDivider++;
 478       }
 479       const configuredMeterValueSampleInterval =
 480         ChargingStationConfigurationUtils.getConfigurationKey(
 481           chargingStation,
 482           OCPP16StandardParametersKey.MeterValueSampleInterval
 483         );
 484       chargingStation.startMeterValues(
 485         connectorId,
 486         configuredMeterValueSampleInterval
 487           ? Utils.convertToInt(configuredMeterValueSampleInterval.value) * 1000
 488           : 60000
 489       );
 490     } else {
 491       logger.warn(
 492         chargingStation.logPrefix() +
 493           ' Starting transaction id ' +
 494           payload.transactionId.toString() +
 495           " REJECTED with status '" +
 496           payload?.idTagInfo?.status +
 497           "', idTag '" +
 498           requestPayload.idTag +
 499           "'"
 500       );
 501       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 502     }
 503   }
 504
 505   private async resetConnectorOnStartTransactionError(
 506     chargingStation: ChargingStation,
 507     connectorId: number
 508   ): Promise<void> {
 509     chargingStation.resetConnectorStatus(connectorId);
 510     if (
 511       chargingStation.getConnectorStatus(connectorId).status !== OCPP16ChargePointStatus.AVAILABLE
 512     ) {
 513       await chargingStation.ocppRequestService.requestHandler<
 514         OCPP16StatusNotificationRequest,
 515         OCPP16StatusNotificationResponse
 516       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 517         connectorId,
 518         status: OCPP16ChargePointStatus.AVAILABLE,
 519         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 520       });
 521       chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 522     }
 523   }
 524
 525   private async handleResponseStopTransaction(
 526     chargingStation: ChargingStation,
 527     payload: OCPP16StopTransactionResponse,
 528     requestPayload: OCPP16StopTransactionRequest
 529   ): Promise<void> {
 530     const transactionConnectorId = chargingStation.getConnectorIdByTransactionId(
 531       requestPayload.transactionId
 532     );
 533     if (!transactionConnectorId) {
 534       logger.error(
 535         chargingStation.logPrefix() +
 536           ' Trying to stop a non existing transaction ' +
 537           requestPayload.transactionId.toString()
 538       );
 539       return;
 540     }
 541     if (payload.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 542       chargingStation.getBeginEndMeterValues() &&
 543         !chargingStation.getOcppStrictCompliance() &&
 544         chargingStation.getOutOfOrderEndMeterValues() &&
 545         (await chargingStation.ocppRequestService.requestHandler<
 546           OCPP16MeterValuesRequest,
 547           OCPP16MeterValuesResponse
 548         >(chargingStation, OCPP16RequestCommand.METER_VALUES, {
 549           connectorId: transactionConnectorId,
 550           transactionId: requestPayload.transactionId,
 551           meterValue: [
 552             OCPP16ServiceUtils.buildTransactionEndMeterValue(
 553               chargingStation,
 554               transactionConnectorId,
 555               requestPayload.meterStop
 556             ),
 557           ],
 558         }));
 559       if (
 560         !chargingStation.isChargingStationAvailable() ||
 561         !chargingStation.isConnectorAvailable(transactionConnectorId)
 562       ) {
 563         await chargingStation.ocppRequestService.requestHandler<
 564           OCPP16StatusNotificationRequest,
 565           OCPP16StatusNotificationResponse
 566         >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 567           connectorId: transactionConnectorId,
 568           status: OCPP16ChargePointStatus.UNAVAILABLE,
 569           errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 570         });
 571         chargingStation.getConnectorStatus(transactionConnectorId).status =
 572           OCPP16ChargePointStatus.UNAVAILABLE;
 573       } else {
 574         await chargingStation.ocppRequestService.requestHandler<
 575           OCPP16BootNotificationRequest,
 576           OCPP16BootNotificationResponse
 577         >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 578           connectorId: transactionConnectorId,
 579           status: OCPP16ChargePointStatus.AVAILABLE,
 580           errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 581         });
 582         chargingStation.getConnectorStatus(transactionConnectorId).status =
 583           OCPP16ChargePointStatus.AVAILABLE;
 584       }
 585       if (chargingStation.stationInfo.powerSharedByConnectors) {
 586         chargingStation.powerDivider--;
 587       }
 588       chargingStation.resetConnectorStatus(transactionConnectorId);
 589       logger.info(
 590         chargingStation.logPrefix() +
 591           ' Transaction ' +
 592           requestPayload.transactionId.toString() +
 593           ' STOPPED on ' +
 594           chargingStation.stationInfo.chargingStationId +
 595           '#' +
 596           transactionConnectorId.toString()
 597       );
 598     } else {
 599       logger.warn(
 600         chargingStation.logPrefix() +
 601           ' Stopping transaction id ' +
 602           requestPayload.transactionId.toString() +
 603           " REJECTED with status '" +
 604           payload.idTagInfo?.status +
 605           "'"
 606       );
 607     }
 608   }
 609 }