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

   1 // Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
   2
   3 import { ChangeAvailabilityRequest, ChangeConfigurationRequest, ClearChargingProfileRequest, GetConfigurationRequest, GetDiagnosticsRequest, MessageTrigger, OCPP16AvailabilityType, OCPP16IncomingRequestCommand, OCPP16RequestCommand, OCPP16TriggerMessageRequest, RemoteStartTransactionRequest, RemoteStopTransactionRequest, ResetRequest, SetChargingProfileRequest, UnlockConnectorRequest } from '../../../types/ocpp/1.6/Requests';
   4 import { ChangeAvailabilityResponse, ChangeConfigurationResponse, ClearChargingProfileResponse, GetConfigurationResponse, GetDiagnosticsResponse, OCPP16TriggerMessageResponse, SetChargingProfileResponse, UnlockConnectorResponse } from '../../../types/ocpp/1.6/Responses';
   5 import { ChargingProfilePurposeType, OCPP16ChargingProfile } from '../../../types/ocpp/1.6/ChargingProfile';
   6 import { Client, FTPResponse } from 'basic-ftp';
   7 import { OCPP16AuthorizationStatus, OCPP16StopTransactionReason } from '../../../types/ocpp/1.6/Transaction';
   8
   9 import ChargingStation from '../../ChargingStation';
  10 import Constants from '../../../utils/Constants';
  11 import { DefaultResponse } from '../../../types/ocpp/Responses';
  12 import { ErrorType } from '../../../types/ocpp/ErrorType';
  13 import { IncomingRequestHandler } from '../../../types/ocpp/Requests';
  14 import { OCPP16ChargePointStatus } from '../../../types/ocpp/1.6/ChargePointStatus';
  15 import { OCPP16DiagnosticsStatus } from '../../../types/ocpp/1.6/DiagnosticsStatus';
  16 import { OCPP16StandardParametersKey } from '../../../types/ocpp/1.6/Configuration';
  17 import { OCPPConfigurationKey } from '../../../types/ocpp/Configuration';
  18 import OCPPError from '../../../exception/OCPPError';
  19 import OCPPIncomingRequestService from '../OCPPIncomingRequestService';
  20 import { URL } from 'url';
  21 import Utils from '../../../utils/Utils';
  22 import fs from 'fs';
  23 import logger from '../../../utils/Logger';
  24 import path from 'path';
  25 import tar from 'tar';
  26
  27 export default class OCPP16IncomingRequestService extends OCPPIncomingRequestService {
  28   private incomingRequestHandlers: Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>;
  29
  30   constructor(chargingStation: ChargingStation) {
  31     super(chargingStation);
  32     this.incomingRequestHandlers = new Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>([
  33       [OCPP16IncomingRequestCommand.RESET, this.handleRequestReset.bind(this)],
  34       [OCPP16IncomingRequestCommand.CLEAR_CACHE, this.handleRequestClearCache.bind(this)],
  35       [OCPP16IncomingRequestCommand.UNLOCK_CONNECTOR, this.handleRequestUnlockConnector.bind(this)],
  36       [OCPP16IncomingRequestCommand.GET_CONFIGURATION, this.handleRequestGetConfiguration.bind(this)],
  37       [OCPP16IncomingRequestCommand.CHANGE_CONFIGURATION, this.handleRequestChangeConfiguration.bind(this)],
  38       [OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE, this.handleRequestSetChargingProfile.bind(this)],
  39       [OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE, this.handleRequestClearChargingProfile.bind(this)],
  40       [OCPP16IncomingRequestCommand.CHANGE_AVAILABILITY, this.handleRequestChangeAvailability.bind(this)],
  41       [OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION, this.handleRequestRemoteStartTransaction.bind(this)],
  42       [OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION, this.handleRequestRemoteStopTransaction.bind(this)],
  43       [OCPP16IncomingRequestCommand.GET_DIAGNOSTICS, this.handleRequestGetDiagnostics.bind(this)],
  44       [OCPP16IncomingRequestCommand.TRIGGER_MESSAGE, this.handleRequestTriggerMessage.bind(this)]
  45     ]);
  46   }
  47
  48   public async handleRequest(messageId: string, commandName: OCPP16IncomingRequestCommand, commandPayload: Record<string, unknown>): Promise<void> {
  49     let result: Record<string, unknown>;
  50     if (this.chargingStation.isInPendingState()
  51       && (commandName === OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION || commandName === OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION)) {
  52       throw new OCPPError(ErrorType.SECURITY_ERROR, `${commandName} cannot be issued to handle request payload ${JSON.stringify(commandPayload, null, 2)} while charging station is in pending state`, commandName);
  53     }
  54     if (this.chargingStation.isRegistered()) {
  55       if (this.incomingRequestHandlers.has(commandName)) {
  56         try {
  57           // Call the method to build the result
  58           result = await this.incomingRequestHandlers.get(commandName)(commandPayload);
  59         } catch (error) {
  60           // Log
  61           logger.error(this.chargingStation.logPrefix() + ' Handle request error: %j', error);
  62           throw error;
  63         }
  64       } else {
  65         // Throw exception
  66         throw new OCPPError(ErrorType.NOT_IMPLEMENTED, `${commandName} is not implemented to handle request payload ${JSON.stringify(commandPayload, null, 2)}`, commandName);
  67       }
  68     } else {
  69       throw new OCPPError(ErrorType.SECURITY_ERROR, `The charging station is not registered on the central server. ${commandName} cannot be issued to handle request payload ${JSON.stringify(commandPayload, null, 2)}`, commandName);
  70     }
  71     // Send the built result
  72     await this.chargingStation.ocppRequestService.sendResult(messageId, result, commandName);
  73   }
  74
  75   // Simulate charging station restart
  76   private handleRequestReset(commandPayload: ResetRequest): DefaultResponse {
  77     // eslint-disable-next-line @typescript-eslint/no-misused-promises
  78     setImmediate(async (): Promise<void> => {
  79       await this.chargingStation.stop(commandPayload.type + 'Reset' as OCPP16StopTransactionReason);
  80       await Utils.sleep(this.chargingStation.stationInfo.resetTime);
  81       this.chargingStation.start();
  82     });
  83     logger.info(`${this.chargingStation.logPrefix()} ${commandPayload.type} reset command received, simulating it. The station will be back online in ${Utils.formatDurationMilliSeconds(this.chargingStation.stationInfo.resetTime)}`);
  84     return Constants.OCPP_RESPONSE_ACCEPTED;
  85   }
  86
  87   private handleRequestClearCache(): DefaultResponse {
  88     return Constants.OCPP_RESPONSE_ACCEPTED;
  89   }
  90
  91   private async handleRequestUnlockConnector(commandPayload: UnlockConnectorRequest): Promise<UnlockConnectorResponse> {
  92     const connectorId = commandPayload.connectorId;
  93     if (connectorId === 0) {
  94       logger.error(this.chargingStation.logPrefix() + ' Trying to unlock connector ' + connectorId.toString());
  95       return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
  96     }
  97     if (this.chargingStation.getConnectorStatus(connectorId)?.transactionStarted) {
  98       const transactionId = this.chargingStation.getConnectorStatus(connectorId).transactionId;
  99       const stopResponse = await this.chargingStation.ocppRequestService.sendStopTransaction(transactionId,
 100         this.chargingStation.getEnergyActiveImportRegisterByTransactionId(transactionId),
 101         this.chargingStation.getTransactionIdTag(transactionId),
 102         OCPP16StopTransactionReason.UNLOCK_COMMAND);
 103       if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 104         return Constants.OCPP_RESPONSE_UNLOCKED;
 105       }
 106       return Constants.OCPP_RESPONSE_UNLOCK_FAILED;
 107     }
 108     await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, OCPP16ChargePointStatus.AVAILABLE);
 109     this.chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 110     return Constants.OCPP_RESPONSE_UNLOCKED;
 111   }
 112
 113   private handleRequestGetConfiguration(commandPayload: GetConfigurationRequest): GetConfigurationResponse {
 114     const configurationKey: OCPPConfigurationKey[] = [];
 115     const unknownKey: string[] = [];
 116     if (Utils.isEmptyArray(commandPayload.key)) {
 117       for (const configuration of this.chargingStation.configuration.configurationKey) {
 118         if (Utils.isUndefined(configuration.visible)) {
 119           configuration.visible = true;
 120         }
 121         if (!configuration.visible) {
 122           continue;
 123         }
 124         configurationKey.push({
 125           key: configuration.key,
 126           readonly: configuration.readonly,
 127           value: configuration.value,
 128         });
 129       }
 130     } else {
 131       for (const key of commandPayload.key) {
 132         const keyFound = this.chargingStation.getConfigurationKey(key);
 133         if (keyFound) {
 134           if (Utils.isUndefined(keyFound.visible)) {
 135             keyFound.visible = true;
 136           }
 137           if (!keyFound.visible) {
 138             continue;
 139           }
 140           configurationKey.push({
 141             key: keyFound.key,
 142             readonly: keyFound.readonly,
 143             value: keyFound.value,
 144           });
 145         } else {
 146           unknownKey.push(key);
 147         }
 148       }
 149     }
 150     return {
 151       configurationKey,
 152       unknownKey,
 153     };
 154   }
 155
 156   private handleRequestChangeConfiguration(commandPayload: ChangeConfigurationRequest): ChangeConfigurationResponse {
 157     // JSON request fields type sanity check
 158     if (!Utils.isString(commandPayload.key)) {
 159       logger.error(`${this.chargingStation.logPrefix()} ${OCPP16RequestCommand.CHANGE_CONFIGURATION} request key field is not a string:`, commandPayload);
 160     }
 161     if (!Utils.isString(commandPayload.value)) {
 162       logger.error(`${this.chargingStation.logPrefix()} ${OCPP16RequestCommand.CHANGE_CONFIGURATION} request value field is not a string:`, commandPayload);
 163     }
 164     const keyToChange = this.chargingStation.getConfigurationKey(commandPayload.key, true);
 165     if (!keyToChange) {
 166       return Constants.OCPP_CONFIGURATION_RESPONSE_NOT_SUPPORTED;
 167     } else if (keyToChange && keyToChange.readonly) {
 168       return Constants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
 169     } else if (keyToChange && !keyToChange.readonly) {
 170       const keyIndex = this.chargingStation.configuration.configurationKey.indexOf(keyToChange);
 171       let valueChanged = false;
 172       if (this.chargingStation.configuration.configurationKey[keyIndex].value !== commandPayload.value) {
 173         this.chargingStation.configuration.configurationKey[keyIndex].value = commandPayload.value;
 174         valueChanged = true;
 175       }
 176       let triggerHeartbeatRestart = false;
 177       if (keyToChange.key === OCPP16StandardParametersKey.HeartBeatInterval && valueChanged) {
 178         this.chargingStation.setConfigurationKeyValue(OCPP16StandardParametersKey.HeartbeatInterval, commandPayload.value);
 179         triggerHeartbeatRestart = true;
 180       }
 181       if (keyToChange.key === OCPP16StandardParametersKey.HeartbeatInterval && valueChanged) {
 182         this.chargingStation.setConfigurationKeyValue(OCPP16StandardParametersKey.HeartBeatInterval, commandPayload.value);
 183         triggerHeartbeatRestart = true;
 184       }
 185       if (triggerHeartbeatRestart) {
 186         this.chargingStation.restartHeartbeat();
 187       }
 188       if (keyToChange.key === OCPP16StandardParametersKey.WebSocketPingInterval && valueChanged) {
 189         this.chargingStation.restartWebSocketPing();
 190       }
 191       if (keyToChange.reboot) {
 192         return Constants.OCPP_CONFIGURATION_RESPONSE_REBOOT_REQUIRED;
 193       }
 194       return Constants.OCPP_CONFIGURATION_RESPONSE_ACCEPTED;
 195     }
 196   }
 197
 198   private handleRequestSetChargingProfile(commandPayload: SetChargingProfileRequest): SetChargingProfileResponse {
 199     if (!this.chargingStation.getConnectorStatus(commandPayload.connectorId)) {
 200       logger.error(`${this.chargingStation.logPrefix()} Trying to set charging profile(s) to a non existing connector Id ${commandPayload.connectorId}`);
 201       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 202     }
 203     if (commandPayload.csChargingProfiles.chargingProfilePurpose === ChargingProfilePurposeType.CHARGE_POINT_MAX_PROFILE && commandPayload.connectorId !== 0) {
 204       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 205     }
 206     if (commandPayload.csChargingProfiles.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE && (commandPayload.connectorId === 0 || !this.chargingStation.getConnectorStatus(commandPayload.connectorId)?.transactionStarted)) {
 207       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 208     }
 209     this.chargingStation.setChargingProfile(commandPayload.connectorId, commandPayload.csChargingProfiles);
 210     logger.debug(`${this.chargingStation.logPrefix()} Charging profile(s) set, dump their stack: %j`, this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles);
 211     return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 212   }
 213
 214   private handleRequestClearChargingProfile(commandPayload: ClearChargingProfileRequest): ClearChargingProfileResponse {
 215     if (!this.chargingStation.getConnectorStatus(commandPayload.connectorId)) {
 216       logger.error(`${this.chargingStation.logPrefix()} Trying to clear a charging profile(s) to a non existing connector Id ${commandPayload.connectorId}`);
 217       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 218     }
 219     if (commandPayload.connectorId && !Utils.isEmptyArray(this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles)) {
 220       this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles = [];
 221       logger.debug(`${this.chargingStation.logPrefix()} Charging profile(s) cleared, dump their stack: %j`, this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles);
 222       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 223     }
 224     if (!commandPayload.connectorId) {
 225       let clearedCP = false;
 226       for (const connectorId of this.chargingStation.connectors.keys()) {
 227         if (!Utils.isEmptyArray(this.chargingStation.getConnectorStatus(connectorId).chargingProfiles)) {
 228           this.chargingStation.getConnectorStatus(connectorId).chargingProfiles?.forEach((chargingProfile: OCPP16ChargingProfile, index: number) => {
 229             let clearCurrentCP = false;
 230             if (chargingProfile.chargingProfileId === commandPayload.id) {
 231               clearCurrentCP = true;
 232             }
 233             if (!commandPayload.chargingProfilePurpose && chargingProfile.stackLevel === commandPayload.stackLevel) {
 234               clearCurrentCP = true;
 235             }
 236             if (!chargingProfile.stackLevel && chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose) {
 237               clearCurrentCP = true;
 238             }
 239             if (chargingProfile.stackLevel === commandPayload.stackLevel && chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose) {
 240               clearCurrentCP = true;
 241             }
 242             if (clearCurrentCP) {
 243               this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles[index] = {} as OCPP16ChargingProfile;
 244               logger.debug(`${this.chargingStation.logPrefix()} Charging profile(s) cleared, dump their stack: %j`, this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles);
 245               clearedCP = true;
 246             }
 247           });
 248         }
 249       }
 250       if (clearedCP) {
 251         return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 252       }
 253     }
 254     return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 255   }
 256
 257   private async handleRequestChangeAvailability(commandPayload: ChangeAvailabilityRequest): Promise<ChangeAvailabilityResponse> {
 258     const connectorId: number = commandPayload.connectorId;
 259     if (!this.chargingStation.getConnectorStatus(connectorId)) {
 260       logger.error(`${this.chargingStation.logPrefix()} Trying to change the availability of a non existing connector Id ${connectorId.toString()}`);
 261       return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 262     }
 263     const chargePointStatus: OCPP16ChargePointStatus = commandPayload.type === OCPP16AvailabilityType.OPERATIVE
 264       ? OCPP16ChargePointStatus.AVAILABLE
 265       : OCPP16ChargePointStatus.UNAVAILABLE;
 266     if (connectorId === 0) {
 267       let response: ChangeAvailabilityResponse = Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 268       for (const id of this.chargingStation.connectors.keys()) {
 269         if (this.chargingStation.getConnectorStatus(id)?.transactionStarted) {
 270           response = Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 271         }
 272         this.chargingStation.getConnectorStatus(id).availability = commandPayload.type;
 273         if (response === Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED) {
 274           await this.chargingStation.ocppRequestService.sendStatusNotification(id, chargePointStatus);
 275           this.chargingStation.getConnectorStatus(id).status = chargePointStatus;
 276         }
 277       }
 278       return response;
 279     } else if (connectorId > 0 && (this.chargingStation.getConnectorStatus(0).availability === OCPP16AvailabilityType.OPERATIVE || (this.chargingStation.getConnectorStatus(0).availability === OCPP16AvailabilityType.INOPERATIVE && commandPayload.type === OCPP16AvailabilityType.INOPERATIVE))) {
 280       if (this.chargingStation.getConnectorStatus(connectorId)?.transactionStarted) {
 281         this.chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 282         return Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 283       }
 284       this.chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 285       await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, chargePointStatus);
 286       this.chargingStation.getConnectorStatus(connectorId).status = chargePointStatus;
 287       return Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 288     }
 289     return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 290   }
 291
 292   private async handleRequestRemoteStartTransaction(commandPayload: RemoteStartTransactionRequest): Promise<DefaultResponse> {
 293     const transactionConnectorId: number = commandPayload.connectorId;
 294     if (transactionConnectorId) {
 295       await this.chargingStation.ocppRequestService.sendStatusNotification(transactionConnectorId, OCPP16ChargePointStatus.PREPARING);
 296       this.chargingStation.getConnectorStatus(transactionConnectorId).status = OCPP16ChargePointStatus.PREPARING;
 297       if (this.chargingStation.isChargingStationAvailable() && this.chargingStation.isConnectorAvailable(transactionConnectorId)) {
 298         // Check if authorized
 299         if (this.chargingStation.getAuthorizeRemoteTxRequests()) {
 300           let authorized = false;
 301           if (this.chargingStation.getLocalAuthListEnabled() && this.chargingStation.hasAuthorizedTags()
 302             && this.chargingStation.authorizedTags.find((value) => value === commandPayload.idTag)) {
 303             this.chargingStation.getConnectorStatus(transactionConnectorId).localAuthorizeIdTag = commandPayload.idTag;
 304             this.chargingStation.getConnectorStatus(transactionConnectorId).idTagLocalAuthorized = true;
 305             authorized = true;
 306           } else if (this.chargingStation.getMayAuthorizeAtRemoteStart()) {
 307             const authorizeResponse = await this.chargingStation.ocppRequestService.sendAuthorize(transactionConnectorId, commandPayload.idTag);
 308             if (authorizeResponse?.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 309               authorized = true;
 310             }
 311           } else {
 312             logger.warn(`${this.chargingStation.logPrefix()} The charging station configuration expects authorize at remote start transaction but local authorization or authorize isn't enabled`);
 313           }
 314           if (authorized) {
 315             // Authorization successful, start transaction
 316             if (this.setRemoteStartTransactionChargingProfile(transactionConnectorId, commandPayload.chargingProfile)) {
 317               this.chargingStation.getConnectorStatus(transactionConnectorId).transactionRemoteStarted = true;
 318               if ((await this.chargingStation.ocppRequestService.sendStartTransaction(transactionConnectorId, commandPayload.idTag)).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED) {
 319                 logger.debug(this.chargingStation.logPrefix() + ' Transaction remotely STARTED on ' + this.chargingStation.stationInfo.chargingStationId + '#' + transactionConnectorId.toString() + ' for idTag ' + commandPayload.idTag);
 320                 return Constants.OCPP_RESPONSE_ACCEPTED;
 321               }
 322               return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 323             }
 324             return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 325           }
 326           return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 327         }
 328         // No authorization check required, start transaction
 329         if (this.setRemoteStartTransactionChargingProfile(transactionConnectorId, commandPayload.chargingProfile)) {
 330           this.chargingStation.getConnectorStatus(transactionConnectorId).transactionRemoteStarted = true;
 331           if ((await this.chargingStation.ocppRequestService.sendStartTransaction(transactionConnectorId, commandPayload.idTag)).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED) {
 332             logger.debug(this.chargingStation.logPrefix() + ' Transaction remotely STARTED on ' + this.chargingStation.stationInfo.chargingStationId + '#' + transactionConnectorId.toString() + ' for idTag ' + commandPayload.idTag);
 333             return Constants.OCPP_RESPONSE_ACCEPTED;
 334           }
 335           return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 336         }
 337         return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 338       }
 339       return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 340     }
 341     return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 342   }
 343
 344   private async notifyRemoteStartTransactionRejected(connectorId: number, idTag: string): Promise<DefaultResponse> {
 345     if (this.chargingStation.getConnectorStatus(connectorId).status !== OCPP16ChargePointStatus.AVAILABLE) {
 346       await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, OCPP16ChargePointStatus.AVAILABLE);
 347       this.chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 348     }
 349     logger.warn(this.chargingStation.logPrefix() + ' Remote starting transaction REJECTED on connector Id ' + connectorId.toString() + ', idTag ' + idTag + ', availability ' + this.chargingStation.getConnectorStatus(connectorId).availability + ', status ' + this.chargingStation.getConnectorStatus(connectorId).status);
 350     return Constants.OCPP_RESPONSE_REJECTED;
 351   }
 352
 353   private setRemoteStartTransactionChargingProfile(connectorId: number, cp: OCPP16ChargingProfile): boolean {
 354     if (cp && cp.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE) {
 355       this.chargingStation.setChargingProfile(connectorId, cp);
 356       logger.debug(`${this.chargingStation.logPrefix()} Charging profile(s) set at remote start transaction, dump their stack: %j`, this.chargingStation.getConnectorStatus(connectorId).chargingProfiles);
 357       return true;
 358     } else if (cp && cp.chargingProfilePurpose !== ChargingProfilePurposeType.TX_PROFILE) {
 359       logger.warn(`${this.chargingStation.logPrefix()} Not allowed to set ${cp.chargingProfilePurpose} charging profile(s) at remote start transaction`);
 360       return false;
 361     } else if (!cp) {
 362       return true;
 363     }
 364   }
 365
 366   private async handleRequestRemoteStopTransaction(commandPayload: RemoteStopTransactionRequest): Promise<DefaultResponse> {
 367     const transactionId = commandPayload.transactionId;
 368     for (const connectorId of this.chargingStation.connectors.keys()) {
 369       if (connectorId > 0 && this.chargingStation.getConnectorStatus(connectorId)?.transactionId === transactionId) {
 370         await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, OCPP16ChargePointStatus.FINISHING);
 371         this.chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.FINISHING;
 372         await this.chargingStation.ocppRequestService.sendStopTransaction(transactionId, this.chargingStation.getEnergyActiveImportRegisterByTransactionId(transactionId),
 373           this.chargingStation.getTransactionIdTag(transactionId));
 374         return Constants.OCPP_RESPONSE_ACCEPTED;
 375       }
 376     }
 377     logger.info(this.chargingStation.logPrefix() + ' Trying to remote stop a non existing transaction ' + transactionId.toString());
 378     return Constants.OCPP_RESPONSE_REJECTED;
 379   }
 380
 381   private async handleRequestGetDiagnostics(commandPayload: GetDiagnosticsRequest): Promise<GetDiagnosticsResponse> {
 382     logger.debug(this.chargingStation.logPrefix() + ' ' + OCPP16IncomingRequestCommand.GET_DIAGNOSTICS + ' request received: %j', commandPayload);
 383     const uri = new URL(commandPayload.location);
 384     if (uri.protocol.startsWith('ftp:')) {
 385       let ftpClient: Client;
 386       try {
 387         const logFiles = fs.readdirSync(path.resolve(__dirname, '../../../../')).filter((file) => file.endsWith('.log')).map((file) => path.join('./', file));
 388         const diagnosticsArchive = this.chargingStation.stationInfo.chargingStationId + '_logs.tar.gz';
 389         tar.create({ gzip: true }, logFiles).pipe(fs.createWriteStream(diagnosticsArchive));
 390         ftpClient = new Client();
 391         const accessResponse = await ftpClient.access({
 392           host: uri.host,
 393           ...(uri.port !== '') && { port: Utils.convertToInt(uri.port) },
 394           ...(uri.username !== '') && { user: uri.username },
 395           ...(uri.password !== '') && { password: uri.password },
 396         });
 397         let uploadResponse: FTPResponse;
 398         if (accessResponse.code === 220) {
 399           // eslint-disable-next-line @typescript-eslint/no-misused-promises
 400           ftpClient.trackProgress(async (info) => {
 401             logger.info(`${this.chargingStation.logPrefix()} ${info.bytes / 1024} bytes transferred from diagnostics archive ${info.name}`);
 402             await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.Uploading);
 403           });
 404           uploadResponse = await ftpClient.uploadFrom(path.join(path.resolve(__dirname, '../../../../'), diagnosticsArchive), uri.pathname + diagnosticsArchive);
 405           if (uploadResponse.code === 226) {
 406             await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.Uploaded);
 407             if (ftpClient) {
 408               ftpClient.close();
 409             }
 410             return { fileName: diagnosticsArchive };
 411           }
 412           throw new OCPPError(ErrorType.GENERIC_ERROR, `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${uploadResponse?.code && '|' + uploadResponse?.code.toString()}`, OCPP16IncomingRequestCommand.GET_DIAGNOSTICS);
 413         }
 414         throw new OCPPError(ErrorType.GENERIC_ERROR, `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${uploadResponse?.code && '|' + uploadResponse?.code.toString()}`, OCPP16IncomingRequestCommand.GET_DIAGNOSTICS);
 415       } catch (error) {
 416         await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.UploadFailed);
 417         if (ftpClient) {
 418           ftpClient.close();
 419         }
 420         return this.handleIncomingRequestError(OCPP16IncomingRequestCommand.GET_DIAGNOSTICS, error as Error, Constants.OCPP_RESPONSE_EMPTY);
 421       }
 422     } else {
 423       logger.error(`${this.chargingStation.logPrefix()} Unsupported protocol ${uri.protocol} to transfer the diagnostic logs archive`);
 424       await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.UploadFailed);
 425       return Constants.OCPP_RESPONSE_EMPTY;
 426     }
 427   }
 428
 429   private handleRequestTriggerMessage(commandPayload: OCPP16TriggerMessageRequest): OCPP16TriggerMessageResponse {
 430     try {
 431       switch (commandPayload.requestedMessage) {
 432         case MessageTrigger.BootNotification:
 433           setTimeout(() => {
 434             this.chargingStation.ocppRequestService.sendBootNotification(this.chargingStation.getBootNotificationRequest().chargePointModel,
 435               this.chargingStation.getBootNotificationRequest().chargePointVendor, this.chargingStation.getBootNotificationRequest().chargeBoxSerialNumber,
 436               this.chargingStation.getBootNotificationRequest().firmwareVersion, null, null, null, null, null, { triggerMessage: true }).catch(() => { /* This is intentional */ });
 437           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
 438           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
 439         case MessageTrigger.Heartbeat:
 440           setTimeout(() => {
 441             this.chargingStation.ocppRequestService.sendHeartbeat({ triggerMessage: true }).catch(() => { /* This is intentional */ });
 442           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
 443           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
 444         default:
 445           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
 446       }
 447     } catch (error) {
 448       return this.handleIncomingRequestError(OCPP16IncomingRequestCommand.TRIGGER_MESSAGE, error as Error, Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED);
 449     }
 450   }
 451 }