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