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 { JsonType } from '../../../types/JsonType';
  15 import { OCPP16ChargePointStatus } from '../../../types/ocpp/1.6/ChargePointStatus';
  16 import { OCPP16DiagnosticsStatus } from '../../../types/ocpp/1.6/DiagnosticsStatus';
  17 import { OCPP16StandardParametersKey } from '../../../types/ocpp/1.6/Configuration';
  18 import { OCPPConfigurationKey } from '../../../types/ocpp/Configuration';
  19 import OCPPError from '../../../exception/OCPPError';
  20 import OCPPIncomingRequestService from '../OCPPIncomingRequestService';
  21 import { URL } from 'url';
  22 import Utils from '../../../utils/Utils';
  23 import fs from 'fs';
  24 import getLogger from '../../../utils/Logger';
  25 import path from 'path';
  26 import tar from 'tar';
  27
  28 export default class OCPP16IncomingRequestService extends OCPPIncomingRequestService {
  29   private incomingRequestHandlers: Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>;
  30
  31   constructor(chargingStation: ChargingStation) {
  32     super(chargingStation);
  33     this.incomingRequestHandlers = new Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>([
  34       [OCPP16IncomingRequestCommand.RESET, this.handleRequestReset.bind(this)],
  35       [OCPP16IncomingRequestCommand.CLEAR_CACHE, this.handleRequestClearCache.bind(this)],
  36       [OCPP16IncomingRequestCommand.UNLOCK_CONNECTOR, this.handleRequestUnlockConnector.bind(this)],
  37       [OCPP16IncomingRequestCommand.GET_CONFIGURATION, this.handleRequestGetConfiguration.bind(this)],
  38       [OCPP16IncomingRequestCommand.CHANGE_CONFIGURATION, this.handleRequestChangeConfiguration.bind(this)],
  39       [OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE, this.handleRequestSetChargingProfile.bind(this)],
  40       [OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE, this.handleRequestClearChargingProfile.bind(this)],
  41       [OCPP16IncomingRequestCommand.CHANGE_AVAILABILITY, this.handleRequestChangeAvailability.bind(this)],
  42       [OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION, this.handleRequestRemoteStartTransaction.bind(this)],
  43       [OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION, this.handleRequestRemoteStopTransaction.bind(this)],
  44       [OCPP16IncomingRequestCommand.GET_DIAGNOSTICS, this.handleRequestGetDiagnostics.bind(this)],
  45       [OCPP16IncomingRequestCommand.TRIGGER_MESSAGE, this.handleRequestTriggerMessage.bind(this)]
  46     ]);
  47   }
  48
  49   public async handleRequest(messageId: string, commandName: OCPP16IncomingRequestCommand, commandPayload: JsonType): Promise<void> {
  50     let result: JsonType;
  51     if (this.chargingStation.getOcppStrictCompliance() && (this.chargingStation.isInPendingState()
  52       && (commandName === OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION || commandName === OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION))) {
  53       throw new OCPPError(ErrorType.SECURITY_ERROR, `${commandName} cannot be issued to handle request payload ${JSON.stringify(commandPayload, null, 2)} while the charging station is in pending state on the central server`, commandName);
  54     }
  55     if (this.chargingStation.isRegistered() || (!this.chargingStation.getOcppStrictCompliance() && this.chargingStation.isInUnknownState())) {
  56       if (this.incomingRequestHandlers.has(commandName)) {
  57         try {
  58           // Call the method to build the result
  59           result = await this.incomingRequestHandlers.get(commandName)(commandPayload);
  60         } catch (error) {
  61           // Log
  62           getLogger().error(this.chargingStation.logPrefix() + ' Handle request error: %j', error);
  63           throw error;
  64         }
  65       } else {
  66         // Throw exception
  67         throw new OCPPError(ErrorType.NOT_IMPLEMENTED, `${commandName} is not implemented to handle request payload ${JSON.stringify(commandPayload, null, 2)}`, commandName);
  68       }
  69     } else {
  70       throw new OCPPError(ErrorType.SECURITY_ERROR, `${commandName} cannot be issued to handle request payload ${JSON.stringify(commandPayload, null, 2)} while the charging station is not registered on the central server.`, commandName);
  71     }
  72     // Send the built result
  73     await this.chargingStation.ocppRequestService.sendResult(messageId, result, commandName);
  74   }
  75
  76   // Simulate charging station restart
  77   private handleRequestReset(commandPayload: ResetRequest): DefaultResponse {
  78     // eslint-disable-next-line @typescript-eslint/no-misused-promises
  79     setImmediate(async (): Promise<void> => {
  80       await this.chargingStation.stop(commandPayload.type + 'Reset' as OCPP16StopTransactionReason);
  81       await Utils.sleep(this.chargingStation.stationInfo.resetTime);
  82       this.chargingStation.start();
  83     });
  84     getLogger().info(`${this.chargingStation.logPrefix()} ${commandPayload.type} reset command received, simulating it. The station will be back online in ${Utils.formatDurationMilliSeconds(this.chargingStation.stationInfo.resetTime)}`);
  85     return Constants.OCPP_RESPONSE_ACCEPTED;
  86   }
  87
  88   private handleRequestClearCache(): DefaultResponse {
  89     return Constants.OCPP_RESPONSE_ACCEPTED;
  90   }
  91
  92   private async handleRequestUnlockConnector(commandPayload: UnlockConnectorRequest): Promise<UnlockConnectorResponse> {
  93     const connectorId = commandPayload.connectorId;
  94     if (connectorId === 0) {
  95       getLogger().error(this.chargingStation.logPrefix() + ' Trying to unlock connector ' + connectorId.toString());
  96       return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
  97     }
  98     if (this.chargingStation.getConnectorStatus(connectorId)?.transactionStarted) {
  99       const transactionId = this.chargingStation.getConnectorStatus(connectorId).transactionId;
 100       const stopResponse = await this.chargingStation.ocppRequestService.sendStopTransaction(transactionId,
 101         this.chargingStation.getEnergyActiveImportRegisterByTransactionId(transactionId),
 102         this.chargingStation.getTransactionIdTag(transactionId),
 103         OCPP16StopTransactionReason.UNLOCK_COMMAND);
 104       if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 105         return Constants.OCPP_RESPONSE_UNLOCKED;
 106       }
 107       return Constants.OCPP_RESPONSE_UNLOCK_FAILED;
 108     }
 109     await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, OCPP16ChargePointStatus.AVAILABLE);
 110     this.chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 111     return Constants.OCPP_RESPONSE_UNLOCKED;
 112   }
 113
 114   private handleRequestGetConfiguration(commandPayload: GetConfigurationRequest): GetConfigurationResponse {
 115     const configurationKey: OCPPConfigurationKey[] = [];
 116     const unknownKey: string[] = [];
 117     if (Utils.isEmptyArray(commandPayload.key)) {
 118       for (const configuration of this.chargingStation.configuration.configurationKey) {
 119         if (Utils.isUndefined(configuration.visible)) {
 120           configuration.visible = true;
 121         }
 122         if (!configuration.visible) {
 123           continue;
 124         }
 125         configurationKey.push({
 126           key: configuration.key,
 127           readonly: configuration.readonly,
 128           value: configuration.value,
 129         });
 130       }
 131     } else {
 132       for (const key of commandPayload.key) {
 133         const keyFound = this.chargingStation.getConfigurationKey(key);
 134         if (keyFound) {
 135           if (Utils.isUndefined(keyFound.visible)) {
 136             keyFound.visible = true;
 137           }
 138           if (!keyFound.visible) {
 139             continue;
 140           }
 141           configurationKey.push({
 142             key: keyFound.key,
 143             readonly: keyFound.readonly,
 144             value: keyFound.value,
 145           });
 146         } else {
 147           unknownKey.push(key);
 148         }
 149       }
 150     }
 151     return {
 152       configurationKey,
 153       unknownKey,
 154     };
 155   }
 156
 157   private handleRequestChangeConfiguration(commandPayload: ChangeConfigurationRequest): ChangeConfigurationResponse {
 158     // JSON request fields type sanity check
 159     if (!Utils.isString(commandPayload.key)) {
 160       getLogger().error(`${this.chargingStation.logPrefix()} ${OCPP16RequestCommand.CHANGE_CONFIGURATION} request key field is not a string:`, commandPayload);
 161     }
 162     if (!Utils.isString(commandPayload.value)) {
 163       getLogger().error(`${this.chargingStation.logPrefix()} ${OCPP16RequestCommand.CHANGE_CONFIGURATION} request value field is not a string:`, commandPayload);
 164     }
 165     const keyToChange = this.chargingStation.getConfigurationKey(commandPayload.key, true);
 166     if (!keyToChange) {
 167       return Constants.OCPP_CONFIGURATION_RESPONSE_NOT_SUPPORTED;
 168     } else if (keyToChange && keyToChange.readonly) {
 169       return Constants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
 170     } else if (keyToChange && !keyToChange.readonly) {
 171       const keyIndex = this.chargingStation.configuration.configurationKey.indexOf(keyToChange);
 172       let valueChanged = false;
 173       if (this.chargingStation.configuration.configurationKey[keyIndex].value !== commandPayload.value) {
 174         this.chargingStation.configuration.configurationKey[keyIndex].value = commandPayload.value;
 175         valueChanged = true;
 176       }
 177       let triggerHeartbeatRestart = false;
 178       if (keyToChange.key === OCPP16StandardParametersKey.HeartBeatInterval && valueChanged) {
 179         this.chargingStation.setConfigurationKeyValue(OCPP16StandardParametersKey.HeartbeatInterval, commandPayload.value);
 180         triggerHeartbeatRestart = true;
 181       }
 182       if (keyToChange.key === OCPP16StandardParametersKey.HeartbeatInterval && valueChanged) {
 183         this.chargingStation.setConfigurationKeyValue(OCPP16StandardParametersKey.HeartBeatInterval, commandPayload.value);
 184         triggerHeartbeatRestart = true;
 185       }
 186       if (triggerHeartbeatRestart) {
 187         this.chargingStation.restartHeartbeat();
 188       }
 189       if (keyToChange.key === OCPP16StandardParametersKey.WebSocketPingInterval && valueChanged) {
 190         this.chargingStation.restartWebSocketPing();
 191       }
 192       if (keyToChange.reboot) {
 193         return Constants.OCPP_CONFIGURATION_RESPONSE_REBOOT_REQUIRED;
 194       }
 195       return Constants.OCPP_CONFIGURATION_RESPONSE_ACCEPTED;
 196     }
 197   }
 198
 199   private handleRequestSetChargingProfile(commandPayload: SetChargingProfileRequest): SetChargingProfileResponse {
 200     if (!this.chargingStation.getConnectorStatus(commandPayload.connectorId)) {
 201       getLogger().error(`${this.chargingStation.logPrefix()} Trying to set charging profile(s) to a non existing connector Id ${commandPayload.connectorId}`);
 202       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 203     }
 204     if (commandPayload.csChargingProfiles.chargingProfilePurpose === ChargingProfilePurposeType.CHARGE_POINT_MAX_PROFILE && commandPayload.connectorId !== 0) {
 205       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 206     }
 207     if (commandPayload.csChargingProfiles.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE && (commandPayload.connectorId === 0 || !this.chargingStation.getConnectorStatus(commandPayload.connectorId)?.transactionStarted)) {
 208       return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
 209     }
 210     this.chargingStation.setChargingProfile(commandPayload.connectorId, commandPayload.csChargingProfiles);
 211     getLogger().debug(`${this.chargingStation.logPrefix()} Charging profile(s) set, dump their stack: %j`, this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles);
 212     return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 213   }
 214
 215   private handleRequestClearChargingProfile(commandPayload: ClearChargingProfileRequest): ClearChargingProfileResponse {
 216     if (!this.chargingStation.getConnectorStatus(commandPayload.connectorId)) {
 217       getLogger().error(`${this.chargingStation.logPrefix()} Trying to clear a charging profile(s) to a non existing connector Id ${commandPayload.connectorId}`);
 218       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 219     }
 220     if (commandPayload.connectorId && !Utils.isEmptyArray(this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles)) {
 221       this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles = [];
 222       getLogger().debug(`${this.chargingStation.logPrefix()} Charging profile(s) cleared, dump their stack: %j`, this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles);
 223       return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 224     }
 225     if (!commandPayload.connectorId) {
 226       let clearedCP = false;
 227       for (const connectorId of this.chargingStation.connectors.keys()) {
 228         if (!Utils.isEmptyArray(this.chargingStation.getConnectorStatus(connectorId).chargingProfiles)) {
 229           this.chargingStation.getConnectorStatus(connectorId).chargingProfiles?.forEach((chargingProfile: OCPP16ChargingProfile, index: number) => {
 230             let clearCurrentCP = false;
 231             if (chargingProfile.chargingProfileId === commandPayload.id) {
 232               clearCurrentCP = true;
 233             }
 234             if (!commandPayload.chargingProfilePurpose && chargingProfile.stackLevel === commandPayload.stackLevel) {
 235               clearCurrentCP = true;
 236             }
 237             if (!chargingProfile.stackLevel && chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose) {
 238               clearCurrentCP = true;
 239             }
 240             if (chargingProfile.stackLevel === commandPayload.stackLevel && chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose) {
 241               clearCurrentCP = true;
 242             }
 243             if (clearCurrentCP) {
 244               this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles[index] = {} as OCPP16ChargingProfile;
 245               getLogger().debug(`${this.chargingStation.logPrefix()} Charging profile(s) cleared, dump their stack: %j`, this.chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles);
 246               clearedCP = true;
 247             }
 248           });
 249         }
 250       }
 251       if (clearedCP) {
 252         return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
 253       }
 254     }
 255     return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
 256   }
 257
 258   private async handleRequestChangeAvailability(commandPayload: ChangeAvailabilityRequest): Promise<ChangeAvailabilityResponse> {
 259     const connectorId: number = commandPayload.connectorId;
 260     if (!this.chargingStation.getConnectorStatus(connectorId)) {
 261       getLogger().error(`${this.chargingStation.logPrefix()} Trying to change the availability of a non existing connector Id ${connectorId.toString()}`);
 262       return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 263     }
 264     const chargePointStatus: OCPP16ChargePointStatus = commandPayload.type === OCPP16AvailabilityType.OPERATIVE
 265       ? OCPP16ChargePointStatus.AVAILABLE
 266       : OCPP16ChargePointStatus.UNAVAILABLE;
 267     if (connectorId === 0) {
 268       let response: ChangeAvailabilityResponse = Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 269       for (const id of this.chargingStation.connectors.keys()) {
 270         if (this.chargingStation.getConnectorStatus(id)?.transactionStarted) {
 271           response = Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 272         }
 273         this.chargingStation.getConnectorStatus(id).availability = commandPayload.type;
 274         if (response === Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED) {
 275           await this.chargingStation.ocppRequestService.sendStatusNotification(id, chargePointStatus);
 276           this.chargingStation.getConnectorStatus(id).status = chargePointStatus;
 277         }
 278       }
 279       return response;
 280     } else if (connectorId > 0 && (this.chargingStation.getConnectorStatus(0).availability === OCPP16AvailabilityType.OPERATIVE || (this.chargingStation.getConnectorStatus(0).availability === OCPP16AvailabilityType.INOPERATIVE && commandPayload.type === OCPP16AvailabilityType.INOPERATIVE))) {
 281       if (this.chargingStation.getConnectorStatus(connectorId)?.transactionStarted) {
 282         this.chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 283         return Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
 284       }
 285       this.chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
 286       await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, chargePointStatus);
 287       this.chargingStation.getConnectorStatus(connectorId).status = chargePointStatus;
 288       return Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
 289     }
 290     return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
 291   }
 292
 293   private async handleRequestRemoteStartTransaction(commandPayload: RemoteStartTransactionRequest): Promise<DefaultResponse> {
 294     const transactionConnectorId: number = commandPayload.connectorId;
 295     if (transactionConnectorId) {
 296       await this.chargingStation.ocppRequestService.sendStatusNotification(transactionConnectorId, OCPP16ChargePointStatus.PREPARING);
 297       this.chargingStation.getConnectorStatus(transactionConnectorId).status = OCPP16ChargePointStatus.PREPARING;
 298       if (this.chargingStation.isChargingStationAvailable() && this.chargingStation.isConnectorAvailable(transactionConnectorId)) {
 299         // Check if authorized
 300         if (this.chargingStation.getAuthorizeRemoteTxRequests()) {
 301           let authorized = false;
 302           if (this.chargingStation.getLocalAuthListEnabled() && this.chargingStation.hasAuthorizedTags()
 303             && this.chargingStation.authorizedTags.find((value) => value === commandPayload.idTag)) {
 304             this.chargingStation.getConnectorStatus(transactionConnectorId).localAuthorizeIdTag = commandPayload.idTag;
 305             this.chargingStation.getConnectorStatus(transactionConnectorId).idTagLocalAuthorized = true;
 306             authorized = true;
 307           } else if (this.chargingStation.getMayAuthorizeAtRemoteStart()) {
 308             const authorizeResponse = await this.chargingStation.ocppRequestService.sendAuthorize(transactionConnectorId, commandPayload.idTag);
 309             if (authorizeResponse?.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
 310               authorized = true;
 311             }
 312           } else {
 313             getLogger().warn(`${this.chargingStation.logPrefix()} The charging station configuration expects authorize at remote start transaction but local authorization or authorize isn't enabled`);
 314           }
 315           if (authorized) {
 316             // Authorization successful, start transaction
 317             if (this.setRemoteStartTransactionChargingProfile(transactionConnectorId, commandPayload.chargingProfile)) {
 318               this.chargingStation.getConnectorStatus(transactionConnectorId).transactionRemoteStarted = true;
 319               if ((await this.chargingStation.ocppRequestService.sendStartTransaction(transactionConnectorId, commandPayload.idTag)).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED) {
 320                 getLogger().debug(this.chargingStation.logPrefix() + ' Transaction remotely STARTED on ' + this.chargingStation.stationInfo.chargingStationId + '#' + transactionConnectorId.toString() + ' for idTag ' + commandPayload.idTag);
 321                 return Constants.OCPP_RESPONSE_ACCEPTED;
 322               }
 323               return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 324             }
 325             return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 326           }
 327           return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 328         }
 329         // No authorization check required, start transaction
 330         if (this.setRemoteStartTransactionChargingProfile(transactionConnectorId, commandPayload.chargingProfile)) {
 331           this.chargingStation.getConnectorStatus(transactionConnectorId).transactionRemoteStarted = true;
 332           if ((await this.chargingStation.ocppRequestService.sendStartTransaction(transactionConnectorId, commandPayload.idTag)).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED) {
 333             getLogger().debug(this.chargingStation.logPrefix() + ' Transaction remotely STARTED on ' + this.chargingStation.stationInfo.chargingStationId + '#' + transactionConnectorId.toString() + ' for idTag ' + commandPayload.idTag);
 334             return Constants.OCPP_RESPONSE_ACCEPTED;
 335           }
 336           return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 337         }
 338         return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 339       }
 340       return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 341     }
 342     return this.notifyRemoteStartTransactionRejected(transactionConnectorId, commandPayload.idTag);
 343   }
 344
 345   private async notifyRemoteStartTransactionRejected(connectorId: number, idTag: string): Promise<DefaultResponse> {
 346     if (this.chargingStation.getConnectorStatus(connectorId).status !== OCPP16ChargePointStatus.AVAILABLE) {
 347       await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, OCPP16ChargePointStatus.AVAILABLE);
 348       this.chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
 349     }
 350     getLogger().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);
 351     return Constants.OCPP_RESPONSE_REJECTED;
 352   }
 353
 354   private setRemoteStartTransactionChargingProfile(connectorId: number, cp: OCPP16ChargingProfile): boolean {
 355     if (cp && cp.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE) {
 356       this.chargingStation.setChargingProfile(connectorId, cp);
 357       getLogger().debug(`${this.chargingStation.logPrefix()} Charging profile(s) set at remote start transaction, dump their stack: %j`, this.chargingStation.getConnectorStatus(connectorId).chargingProfiles);
 358       return true;
 359     } else if (cp && cp.chargingProfilePurpose !== ChargingProfilePurposeType.TX_PROFILE) {
 360       getLogger().warn(`${this.chargingStation.logPrefix()} Not allowed to set ${cp.chargingProfilePurpose} charging profile(s) at remote start transaction`);
 361       return false;
 362     } else if (!cp) {
 363       return true;
 364     }
 365   }
 366
 367   private async handleRequestRemoteStopTransaction(commandPayload: RemoteStopTransactionRequest): Promise<DefaultResponse> {
 368     const transactionId = commandPayload.transactionId;
 369     for (const connectorId of this.chargingStation.connectors.keys()) {
 370       if (connectorId > 0 && this.chargingStation.getConnectorStatus(connectorId)?.transactionId === transactionId) {
 371         await this.chargingStation.ocppRequestService.sendStatusNotification(connectorId, OCPP16ChargePointStatus.FINISHING);
 372         this.chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.FINISHING;
 373         await this.chargingStation.ocppRequestService.sendStopTransaction(transactionId, this.chargingStation.getEnergyActiveImportRegisterByTransactionId(transactionId),
 374           this.chargingStation.getTransactionIdTag(transactionId));
 375         return Constants.OCPP_RESPONSE_ACCEPTED;
 376       }
 377     }
 378     getLogger().info(this.chargingStation.logPrefix() + ' Trying to remote stop a non existing transaction ' + transactionId.toString());
 379     return Constants.OCPP_RESPONSE_REJECTED;
 380   }
 381
 382   private async handleRequestGetDiagnostics(commandPayload: GetDiagnosticsRequest): Promise<GetDiagnosticsResponse> {
 383     getLogger().debug(this.chargingStation.logPrefix() + ' ' + OCPP16IncomingRequestCommand.GET_DIAGNOSTICS + ' request received: %j', commandPayload);
 384     const uri = new URL(commandPayload.location);
 385     if (uri.protocol.startsWith('ftp:')) {
 386       let ftpClient: Client;
 387       try {
 388         const logFiles = fs.readdirSync(path.resolve(__dirname, '../../../../')).filter((file) => file.endsWith('.log')).map((file) => path.join('./', file));
 389         const diagnosticsArchive = this.chargingStation.stationInfo.chargingStationId + '_logs.tar.gz';
 390         tar.create({ gzip: true }, logFiles).pipe(fs.createWriteStream(diagnosticsArchive));
 391         ftpClient = new Client();
 392         const accessResponse = await ftpClient.access({
 393           host: uri.host,
 394           ...(uri.port !== '') && { port: Utils.convertToInt(uri.port) },
 395           ...(uri.username !== '') && { user: uri.username },
 396           ...(uri.password !== '') && { password: uri.password },
 397         });
 398         let uploadResponse: FTPResponse;
 399         if (accessResponse.code === 220) {
 400           // eslint-disable-next-line @typescript-eslint/no-misused-promises
 401           ftpClient.trackProgress(async (info) => {
 402             getLogger().info(`${this.chargingStation.logPrefix()} ${info.bytes / 1024} bytes transferred from diagnostics archive ${info.name}`);
 403             await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.Uploading);
 404           });
 405           uploadResponse = await ftpClient.uploadFrom(path.join(path.resolve(__dirname, '../../../../'), diagnosticsArchive), uri.pathname + diagnosticsArchive);
 406           if (uploadResponse.code === 226) {
 407             await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.Uploaded);
 408             if (ftpClient) {
 409               ftpClient.close();
 410             }
 411             return { fileName: diagnosticsArchive };
 412           }
 413           throw new OCPPError(ErrorType.GENERIC_ERROR, `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${uploadResponse?.code && '|' + uploadResponse?.code.toString()}`, OCPP16IncomingRequestCommand.GET_DIAGNOSTICS);
 414         }
 415         throw new OCPPError(ErrorType.GENERIC_ERROR, `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${uploadResponse?.code && '|' + uploadResponse?.code.toString()}`, OCPP16IncomingRequestCommand.GET_DIAGNOSTICS);
 416       } catch (error) {
 417         await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.UploadFailed);
 418         if (ftpClient) {
 419           ftpClient.close();
 420         }
 421         return this.handleIncomingRequestError(OCPP16IncomingRequestCommand.GET_DIAGNOSTICS, error as Error, Constants.OCPP_RESPONSE_EMPTY);
 422       }
 423     } else {
 424       getLogger().error(`${this.chargingStation.logPrefix()} Unsupported protocol ${uri.protocol} to transfer the diagnostic logs archive`);
 425       await this.chargingStation.ocppRequestService.sendDiagnosticsStatusNotification(OCPP16DiagnosticsStatus.UploadFailed);
 426       return Constants.OCPP_RESPONSE_EMPTY;
 427     }
 428   }
 429
 430   private handleRequestTriggerMessage(commandPayload: OCPP16TriggerMessageRequest): OCPP16TriggerMessageResponse {
 431     try {
 432       switch (commandPayload.requestedMessage) {
 433         case MessageTrigger.BootNotification:
 434           setTimeout(() => {
 435             this.chargingStation.ocppRequestService.sendBootNotification(this.chargingStation.getBootNotificationRequest().chargePointModel,
 436               this.chargingStation.getBootNotificationRequest().chargePointVendor, this.chargingStation.getBootNotificationRequest().chargeBoxSerialNumber,
 437               this.chargingStation.getBootNotificationRequest().firmwareVersion, this.chargingStation.getBootNotificationRequest().chargePointSerialNumber,
 438               this.chargingStation.getBootNotificationRequest().iccid, this.chargingStation.getBootNotificationRequest().imsi,
 439               this.chargingStation.getBootNotificationRequest().meterSerialNumber, this.chargingStation.getBootNotificationRequest().meterType,
 440               { triggerMessage: true }).catch(() => { /* This is intentional */ });
 441           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
 442           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
 443         case MessageTrigger.Heartbeat:
 444           setTimeout(() => {
 445             this.chargingStation.ocppRequestService.sendHeartbeat({ triggerMessage: true }).catch(() => { /* This is intentional */ });
 446           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
 447           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
 448         default:
 449           return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
 450       }
 451     } catch (error) {
 452       return this.handleIncomingRequestError(OCPP16IncomingRequestCommand.TRIGGER_MESSAGE, error as Error, Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED);
 453     }
 454   }
 455 }