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 '${
 263         payload.status
 264       }' state on the central server`;
 265       payload.status === OCPP16RegistrationStatus.REJECTED
 266         ? logger.warn(logMsg)
 267         : logger.info(logMsg);
 268     } else {
 269       logger.error(
 270         chargingStation.logPrefix() +
 271           ' Charging station boot notification response received: %j with undefined registration status',
 272         payload
 273       );
 274     }
 275   }
 276
 277   private handleResponseAuthorize(
 278     chargingStation: ChargingStation,
 279     payload: OCPP16AuthorizeResponse,
 280     requestPayload: OCPP16AuthorizeRequest
 281   ): void {
 282     let authorizeConnectorId: number;
 283     for (const connectorId of chargingStation.connectors.keys()) {
 284       if (
 285         connectorId > 0 &&
 286         chargingStation.getConnectorStatus(connectorId)?.authorizeIdTag === requestPayload.idTag
 287       ) {
 288         authorizeConnectorId = connectorId;
 289         break;
 290       }
 291     }
 292     if (payload.idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED) {
 293       chargingStation.getConnectorStatus(authorizeConnectorId).idTagAuthorized = true;
 294       logger.debug(
 295         `${chargingStation.logPrefix()} IdTag '${
 296           requestPayload.idTag
 297         }' authorized on connector ${authorizeConnectorId}`
 298       );
 299     } else {
 300       chargingStation.getConnectorStatus(authorizeConnectorId).idTagAuthorized = false;
 301       delete chargingStation.getConnectorStatus(authorizeConnectorId).authorizeIdTag;
 302       logger.debug(
 303         `${chargingStation.logPrefix()} IdTag '${requestPayload.idTag}' refused with status '${
 304           payload.idTagInfo.status
 305         }' on connector ${authorizeConnectorId}`
 306       );
 307     }
 308   }
 309
 310   private async handleResponseStartTransaction(
 311     chargingStation: ChargingStation,
 312     payload: OCPP16StartTransactionResponse,
 313     requestPayload: OCPP16StartTransactionRequest
 314   ): Promise<void> {
 315     const connectorId = requestPayload.connectorId;
 316
 317     let transactionConnectorId: number;
 318     for (const id of chargingStation.connectors.keys()) {
 319       if (id > 0 && id === connectorId) {
 320         transactionConnectorId = id;
 321         break;
 322       }
 323     }
 324     if (!transactionConnectorId) {
 325       logger.error(
 326         chargingStation.logPrefix() +
 327           ' Trying to start a transaction on a non existing connector Id ' +
 328           connectorId.toString()
 329       );
 330       return;
 331     }
 332     if (
 333       chargingStation.getConnectorStatus(connectorId).transactionRemoteStarted === true &&
 334       chargingStation.getAuthorizeRemoteTxRequests() &&
 335       chargingStation.getLocalAuthListEnabled() &&
 336       chargingStation.hasAuthorizedTags() &&
 337       chargingStation.getConnectorStatus(connectorId).idTagLocalAuthorized === false
 338     ) {
 339       logger.error(
 340         chargingStation.logPrefix() +
 341           ' Trying to start a transaction with a not local authorized idTag ' +
 342           chargingStation.getConnectorStatus(connectorId).localAuthorizeIdTag +
 343           ' on connector Id ' +
 344           connectorId.toString()
 345       );
 346       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 347       return;
 348     }
 349     if (
 350       chargingStation.getConnectorStatus(connectorId).transactionRemoteStarted === true &&
 351       chargingStation.getAuthorizeRemoteTxRequests() &&
 352       chargingStation.getMustAuthorizeAtRemoteStart() &&
 353       chargingStation.getConnectorStatus(connectorId).idTagLocalAuthorized === false &&
 354       chargingStation.getConnectorStatus(connectorId).idTagAuthorized === false
 355     ) {
 356       logger.error(
 357         chargingStation.logPrefix() +
 358           ' Trying to start a transaction with a not authorized idTag ' +
 359           chargingStation.getConnectorStatus(connectorId).authorizeIdTag +
 360           ' on connector Id ' +
 361           connectorId.toString()
 362       );
 363       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 364       return;
 365     }
 366     if (
 367       chargingStation.getConnectorStatus(connectorId).idTagAuthorized &&
 368       chargingStation.getConnectorStatus(connectorId).authorizeIdTag !== requestPayload.idTag
 369     ) {
 370       logger.error(
 371         chargingStation.logPrefix() +
 372           ' Trying to start a transaction with an idTag ' +
 373           requestPayload.idTag +
 374           ' different from the authorize request one ' +
 375           chargingStation.getConnectorStatus(connectorId).authorizeIdTag +
 376           ' on connector Id ' +
 377           connectorId.toString()
 378       );
 379       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 380       return;
 381     }
 382     if (
 383       chargingStation.getConnectorStatus(connectorId).idTagLocalAuthorized &&
 384       chargingStation.getConnectorStatus(connectorId).localAuthorizeIdTag !== requestPayload.idTag
 385     ) {
 386       logger.error(
 387         chargingStation.logPrefix() +
 388           ' Trying to start a transaction with an idTag ' +
 389           requestPayload.idTag +
 390           ' different from the local authorized one ' +
 391           chargingStation.getConnectorStatus(connectorId).localAuthorizeIdTag +
 392           ' on connector Id ' +
 393           connectorId.toString()
 394       );
 395       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 396       return;
 397     }
 398     if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
 399       logger.debug(
 400         chargingStation.logPrefix() +
 401           ' Trying to start a transaction on an already used connector ' +
 402           connectorId.toString() +
 403           ': %j',
 404         chargingStation.getConnectorStatus(connectorId)
 405       );
 406       return;
 407     }
 408     if (
 409       chargingStation.getConnectorStatus(connectorId)?.status !==
 410         OCPP16ChargePointStatus.AVAILABLE &&
 411       chargingStation.getConnectorStatus(connectorId)?.status !== OCPP16ChargePointStatus.PREPARING
 412     ) {
 413       logger.error(
 414         `${chargingStation.logPrefix()} Trying to start a transaction on connector ${connectorId.toString()} with status ${
 415           chargingStation.getConnectorStatus(connectorId)?.status
 416         }`
 417       );
 418       return;
 419     }
 420     // if (!Number.isInteger(payload.transactionId)) {
 421     //   logger.warn(
 422     //     `${chargingStation.logPrefix()} Trying to start a transaction on connector ${connectorId.toString()} with a non integer transaction Id ${
 423     //       payload.transactionId
 424     //     }, converting to integer`
 425     //   );
 426     //   payload.transactionId = Utils.convertToInt(payload.transactionId);
 427     // }
 428
 429     if (payload.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 430       chargingStation.getConnectorStatus(connectorId).transactionStarted = true;
 431       chargingStation.getConnectorStatus(connectorId).transactionId = payload.transactionId;
 432       chargingStation.getConnectorStatus(connectorId).transactionIdTag = requestPayload.idTag;
 433       chargingStation.getConnectorStatus(
 434         connectorId
 435       ).transactionEnergyActiveImportRegisterValue = 0;
 436       chargingStation.getConnectorStatus(connectorId).transactionBeginMeterValue =
 437         OCPP16ServiceUtils.buildTransactionBeginMeterValue(
 438           chargingStation,
 439           connectorId,
 440           requestPayload.meterStart
 441         );
 442       chargingStation.getBeginEndMeterValues() &&
 443         (await chargingStation.ocppRequestService.requestHandler<
 444           OCPP16MeterValuesRequest,
 445           OCPP16MeterValuesResponse
 446         >(chargingStation, OCPP16RequestCommand.METER_VALUES, {
 447           connectorId,
 448           transactionId: payload.transactionId,
 449           meterValue: [chargingStation.getConnectorStatus(connectorId).transactionBeginMeterValue],
 450         }));
 451       await chargingStation.ocppRequestService.requestHandler<
 452         OCPP16StatusNotificationRequest,
 453         OCPP16StatusNotificationResponse
 454       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 455         connectorId,
 456         status: OCPP16ChargePointStatus.CHARGING,
 457         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 458       });
 459       chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.CHARGING;
 460       logger.info(
 461         chargingStation.logPrefix() +
 462           ' Transaction ' +
 463           payload.transactionId.toString() +
 464           ' STARTED on ' +
 465           chargingStation.stationInfo.chargingStationId +
 466           '#' +
 467           connectorId.toString() +
 468           " for idTag '" +
 469           requestPayload.idTag +
 470           "'"
 471       );
 472       if (chargingStation.stationInfo.powerSharedByConnectors) {
 473         chargingStation.powerDivider++;
 474       }
 475       const configuredMeterValueSampleInterval =
 476         ChargingStationConfigurationUtils.getConfigurationKey(
 477           chargingStation,
 478           OCPP16StandardParametersKey.MeterValueSampleInterval
 479         );
 480       chargingStation.startMeterValues(
 481         connectorId,
 482         configuredMeterValueSampleInterval
 483           ? Utils.convertToInt(configuredMeterValueSampleInterval.value) * 1000
 484           : 60000
 485       );
 486     } else {
 487       logger.warn(
 488         chargingStation.logPrefix() +
 489           ' Starting transaction id ' +
 490           payload.transactionId.toString() +
 491           " REJECTED with status '" +
 492           payload?.idTagInfo?.status +
 493           "', idTag '" +
 494           requestPayload.idTag +
 495           "'"
 496       );
 497       await this.resetConnectorOnStartTransactionError(chargingStation, connectorId);
 498     }
 499   }
 500
 501   private async resetConnectorOnStartTransactionError(
 502     chargingStation: ChargingStation,
 503     connectorId: number
 504   ): Promise<void> {
 505     chargingStation.resetConnectorStatus(connectorId);
 506     if (
 507       chargingStation.getConnectorStatus(connectorId).status !== OCPP16ChargePointStatus.AVAILABLE
 508     ) {
 509       await chargingStation.ocppRequestService.requestHandler<
 510         OCPP16StatusNotificationRequest,
 511         OCPP16StatusNotificationResponse
 512       >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 513         connectorId,
 514         status: OCPP16ChargePointStatus.AVAILABLE,
 515         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 516       });
 517       chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 518     }
 519   }
 520
 521   private async handleResponseStopTransaction(
 522     chargingStation: ChargingStation,
 523     payload: OCPP16StopTransactionResponse,
 524     requestPayload: OCPP16StopTransactionRequest
 525   ): Promise<void> {
 526     const transactionConnectorId = chargingStation.getConnectorIdByTransactionId(
 527       requestPayload.transactionId
 528     );
 529     if (!transactionConnectorId) {
 530       logger.error(
 531         chargingStation.logPrefix() +
 532           ' Trying to stop a non existing transaction ' +
 533           requestPayload.transactionId.toString()
 534       );
 535       return;
 536     }
 537     if (payload.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 538       chargingStation.getBeginEndMeterValues() &&
 539         !chargingStation.getOcppStrictCompliance() &&
 540         chargingStation.getOutOfOrderEndMeterValues() &&
 541         (await chargingStation.ocppRequestService.requestHandler<
 542           OCPP16MeterValuesRequest,
 543           OCPP16MeterValuesResponse
 544         >(chargingStation, OCPP16RequestCommand.METER_VALUES, {
 545           connectorId: transactionConnectorId,
 546           transactionId: requestPayload.transactionId,
 547           meterValue: [
 548             OCPP16ServiceUtils.buildTransactionEndMeterValue(
 549               chargingStation,
 550               transactionConnectorId,
 551               requestPayload.meterStop
 552             ),
 553           ],
 554         }));
 555       if (
 556         !chargingStation.isChargingStationAvailable() ||
 557         !chargingStation.isConnectorAvailable(transactionConnectorId)
 558       ) {
 559         await chargingStation.ocppRequestService.requestHandler<
 560           OCPP16StatusNotificationRequest,
 561           OCPP16StatusNotificationResponse
 562         >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 563           connectorId: transactionConnectorId,
 564           status: OCPP16ChargePointStatus.UNAVAILABLE,
 565           errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 566         });
 567         chargingStation.getConnectorStatus(transactionConnectorId).status =
 568           OCPP16ChargePointStatus.UNAVAILABLE;
 569       } else {
 570         await chargingStation.ocppRequestService.requestHandler<
 571           OCPP16BootNotificationRequest,
 572           OCPP16BootNotificationResponse
 573         >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
 574           connectorId: transactionConnectorId,
 575           status: OCPP16ChargePointStatus.AVAILABLE,
 576           errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
 577         });
 578         chargingStation.getConnectorStatus(transactionConnectorId).status =
 579           OCPP16ChargePointStatus.AVAILABLE;
 580       }
 581       if (chargingStation.stationInfo.powerSharedByConnectors) {
 582         chargingStation.powerDivider--;
 583       }
 584       chargingStation.resetConnectorStatus(transactionConnectorId);
 585       logger.info(
 586         chargingStation.logPrefix() +
 587           ' Transaction ' +
 588           requestPayload.transactionId.toString() +
 589           ' STOPPED on ' +
 590           chargingStation.stationInfo.chargingStationId +
 591           '#' +
 592           transactionConnectorId.toString()
 593       );
 594     } else {
 595       logger.warn(
 596         chargingStation.logPrefix() +
 597           ' Stopping transaction id ' +
 598           requestPayload.transactionId.toString() +
 599           " REJECTED with status '" +
 600           payload.idTagInfo?.status +
 601           "'"
 602       );
 603     }
 604   }
 605 }