Avoid strings concatenation
[e-mobility-charging-stations-simulator.git] / src / charging-station / ocpp / 1.6 / OCPP16IncomingRequestService.ts
index 420edf86b5e5f1af369b354e6540eb178716e9ca..af378a47a1c6c1371642239ef7c0587ed0e85498 100644 (file)
@@ -8,6 +8,7 @@ import type { JSONSchemaType } from 'ajv';
 import { Client, type FTPResponse } from 'basic-ftp';
 import tar from 'tar';
 
+import { OCPP16ServiceUtils } from './OCPP16ServiceUtils';
 import OCPPError from '../../../exception/OCPPError';
 import type { JsonObject, JsonType } from '../../../types/JsonType';
 import { OCPP16ChargePointErrorCode } from '../../../types/ocpp/1.6/ChargePointErrorCode';
@@ -25,7 +26,6 @@ import {
   type ChangeAvailabilityRequest,
   type ChangeConfigurationRequest,
   type ClearChargingProfileRequest,
-  type DiagnosticsStatusNotificationRequest,
   type GetConfigurationRequest,
   type GetDiagnosticsRequest,
   OCPP16AvailabilityType,
@@ -33,6 +33,9 @@ import {
   type OCPP16ClearCacheRequest,
   type OCPP16DataTransferRequest,
   OCPP16DataTransferVendorId,
+  type OCPP16DiagnosticsStatusNotificationRequest,
+  OCPP16FirmwareStatus,
+  type OCPP16FirmwareStatusNotificationRequest,
   type OCPP16HeartbeatRequest,
   OCPP16IncomingRequestCommand,
   OCPP16MessageTrigger,
@@ -50,12 +53,13 @@ import {
   type ChangeAvailabilityResponse,
   type ChangeConfigurationResponse,
   type ClearChargingProfileResponse,
-  type DiagnosticsStatusNotificationResponse,
   type GetConfigurationResponse,
   type GetDiagnosticsResponse,
   type OCPP16BootNotificationResponse,
   type OCPP16DataTransferResponse,
   OCPP16DataTransferStatus,
+  type OCPP16DiagnosticsStatusNotificationResponse,
+  type OCPP16FirmwareStatusNotificationResponse,
   type OCPP16HeartbeatResponse,
   type OCPP16StatusNotificationResponse,
   type OCPP16TriggerMessageResponse,
@@ -73,28 +77,29 @@ import {
 } from '../../../types/ocpp/1.6/Transaction';
 import type { OCPPConfigurationKey } from '../../../types/ocpp/Configuration';
 import { ErrorType } from '../../../types/ocpp/ErrorType';
+import { OCPPVersion } from '../../../types/ocpp/OCPPVersion';
 import type { IncomingRequestHandler } from '../../../types/ocpp/Requests';
-import type { DefaultResponse } from '../../../types/ocpp/Responses';
+import type { GenericResponse } from '../../../types/ocpp/Responses';
 import Constants from '../../../utils/Constants';
 import logger from '../../../utils/Logger';
 import Utils from '../../../utils/Utils';
 import type ChargingStation from '../../ChargingStation';
 import { ChargingStationConfigurationUtils } from '../../ChargingStationConfigurationUtils';
 import { ChargingStationUtils } from '../../ChargingStationUtils';
+import OCPPConstants from '../OCPPConstants';
 import OCPPIncomingRequestService from '../OCPPIncomingRequestService';
-import { OCPP16ServiceUtils } from './OCPP16ServiceUtils';
 
 const moduleName = 'OCPP16IncomingRequestService';
 
 export default class OCPP16IncomingRequestService extends OCPPIncomingRequestService {
+  protected jsonSchemas: Map<OCPP16IncomingRequestCommand, JSONSchemaType<JsonObject>>;
   private incomingRequestHandlers: Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>;
-  private jsonSchemas: Map<OCPP16IncomingRequestCommand, JSONSchemaType<JsonObject>>;
 
   public constructor() {
     if (new.target?.name === moduleName) {
       throw new TypeError(`Cannot construct ${new.target?.name} instances directly`);
     }
-    super();
+    super(OCPPVersion.VERSION_16);
     this.incomingRequestHandlers = new Map<OCPP16IncomingRequestCommand, IncomingRequestHandler>([
       [OCPP16IncomingRequestCommand.RESET, this.handleRequestReset.bind(this)],
       [OCPP16IncomingRequestCommand.CLEAR_CACHE, this.handleRequestClearCache.bind(this)],
@@ -130,164 +135,90 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       [OCPP16IncomingRequestCommand.GET_DIAGNOSTICS, this.handleRequestGetDiagnostics.bind(this)],
       [OCPP16IncomingRequestCommand.TRIGGER_MESSAGE, this.handleRequestTriggerMessage.bind(this)],
       [OCPP16IncomingRequestCommand.DATA_TRANSFER, this.handleRequestDataTransfer.bind(this)],
-      // [OCPP16IncomingRequestCommand.UPDATE_FIRMWARE, this.handleRequestUpdateFirmware.bind(this)],
+      [OCPP16IncomingRequestCommand.UPDATE_FIRMWARE, this.handleRequestUpdateFirmware.bind(this)],
     ]);
     this.jsonSchemas = new Map<OCPP16IncomingRequestCommand, JSONSchemaType<JsonObject>>([
       [
         OCPP16IncomingRequestCommand.RESET,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/Reset.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<ResetRequest>,
+        this.parseJsonSchemaFile<ResetRequest>('../../../assets/json-schemas/ocpp/1.6/Reset.json'),
       ],
       [
         OCPP16IncomingRequestCommand.CLEAR_CACHE,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/ClearCache.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<OCPP16ClearCacheRequest>,
+        this.parseJsonSchemaFile<OCPP16ClearCacheRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/ClearCache.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.UNLOCK_CONNECTOR,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/UnlockConnector.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<UnlockConnectorRequest>,
+        this.parseJsonSchemaFile<UnlockConnectorRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/UnlockConnector.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.GET_CONFIGURATION,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/GetConfiguration.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<GetConfigurationRequest>,
+        this.parseJsonSchemaFile<GetConfigurationRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/GetConfiguration.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.CHANGE_CONFIGURATION,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/ChangeConfiguration.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<ChangeConfigurationRequest>,
+        this.parseJsonSchemaFile<ChangeConfigurationRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/ChangeConfiguration.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.GET_DIAGNOSTICS,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/GetDiagnostics.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<GetDiagnosticsRequest>,
+        this.parseJsonSchemaFile<GetDiagnosticsRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/GetDiagnostics.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/SetChargingProfile.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<SetChargingProfileRequest>,
+        this.parseJsonSchemaFile<SetChargingProfileRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/SetChargingProfile.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/ClearChargingProfile.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<ClearChargingProfileRequest>,
+        this.parseJsonSchemaFile<ClearChargingProfileRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/ClearChargingProfile.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.CHANGE_AVAILABILITY,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/ChangeAvailability.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<ChangeAvailabilityRequest>,
+        this.parseJsonSchemaFile<ChangeAvailabilityRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/ChangeAvailability.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.REMOTE_START_TRANSACTION,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/RemoteStartTransaction.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<RemoteStartTransactionRequest>,
+        this.parseJsonSchemaFile<RemoteStartTransactionRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/RemoteStartTransaction.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.REMOTE_STOP_TRANSACTION,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/RemoteStopTransaction.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<RemoteStopTransactionRequest>,
+        this.parseJsonSchemaFile<RemoteStopTransactionRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/RemoteStopTransaction.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.TRIGGER_MESSAGE,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/TriggerMessage.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<OCPP16TriggerMessageRequest>,
+        this.parseJsonSchemaFile<OCPP16TriggerMessageRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/TriggerMessage.json'
+        ),
       ],
       [
         OCPP16IncomingRequestCommand.DATA_TRANSFER,
-        JSON.parse(
-          fs.readFileSync(
-            path.resolve(
-              path.dirname(fileURLToPath(import.meta.url)),
-              '../../../assets/json-schemas/ocpp/1.6/DataTransfer.json'
-            ),
-            'utf8'
-          )
-        ) as JSONSchemaType<OCPP16DataTransferRequest>,
+        this.parseJsonSchemaFile<OCPP16DataTransferRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/DataTransfer.json'
+        ),
+      ],
+      [
+        OCPP16IncomingRequestCommand.UPDATE_FIRMWARE,
+        this.parseJsonSchemaFile<OCPP16UpdateFirmwareRequest>(
+          '../../../assets/json-schemas/ocpp/1.6/UpdateFirmware.json'
+        ),
       ],
     ]);
     this.validatePayload.bind(this);
@@ -380,7 +311,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
     commandName: OCPP16IncomingRequestCommand,
     commandPayload: JsonType
   ): boolean {
-    if (this.jsonSchemas.has(commandName)) {
+    if (this.jsonSchemas.has(commandName) === true) {
       return this.validateIncomingRequestPayload(
         chargingStation,
         commandName,
@@ -389,7 +320,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       );
     }
     logger.warn(
-      `${chargingStation.logPrefix()} ${moduleName}.validatePayload: No JSON schema found for command ${commandName} PDU validation`
+      `${chargingStation.logPrefix()} ${moduleName}.validatePayload: No JSON schema found for command '${commandName}' PDU validation`
     );
     return false;
   }
@@ -398,7 +329,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
   private handleRequestReset(
     chargingStation: ChargingStation,
     commandPayload: ResetRequest
-  ): DefaultResponse {
+  ): GenericResponse {
     this.asyncResource
       .runInAsyncScope(
         chargingStation.reset.bind(chargingStation) as (
@@ -406,7 +337,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           ...args: any[]
         ) => Promise<void>,
         chargingStation,
-        (commandPayload.type + 'Reset') as OCPP16StopTransactionReason
+        `${commandPayload.type}Reset` as OCPP16StopTransactionReason
       )
       .catch(() => {
         /* This is intentional */
@@ -418,14 +349,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         chargingStation.stationInfo.resetTime
       )}`
     );
-    return Constants.OCPP_RESPONSE_ACCEPTED;
-  }
-
-  private handleRequestClearCache(chargingStation: ChargingStation): DefaultResponse {
-    chargingStation.authorizedTagsCache.deleteAuthorizedTags(
-      ChargingStationUtils.getAuthorizationFile(chargingStation.stationInfo)
-    );
-    return Constants.OCPP_RESPONSE_ACCEPTED;
+    return OCPPConstants.OCPP_RESPONSE_ACCEPTED;
   }
 
   private async handleRequestUnlockConnector(
@@ -437,13 +361,13 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       logger.error(
         `${chargingStation.logPrefix()} Trying to unlock a non existing connector Id ${connectorId.toString()}`
       );
-      return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
+      return OCPPConstants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
     }
     if (connectorId === 0) {
       logger.error(
-        chargingStation.logPrefix() + ' Trying to unlock connector Id ' + connectorId.toString()
+        `${chargingStation.logPrefix()} Trying to unlock connector Id ${connectorId.toString()}`
       );
-      return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
+      return OCPPConstants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
     }
     if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
       const stopResponse = await chargingStation.stopTransactionOnConnector(
@@ -451,9 +375,9 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         OCPP16StopTransactionReason.UNLOCK_COMMAND
       );
       if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
-        return Constants.OCPP_RESPONSE_UNLOCKED;
+        return OCPPConstants.OCPP_RESPONSE_UNLOCKED;
       }
-      return Constants.OCPP_RESPONSE_UNLOCK_FAILED;
+      return OCPPConstants.OCPP_RESPONSE_UNLOCK_FAILED;
     }
     await chargingStation.ocppRequestService.requestHandler<
       OCPP16StatusNotificationRequest,
@@ -464,7 +388,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
     });
     chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
-    return Constants.OCPP_RESPONSE_UNLOCKED;
+    return OCPPConstants.OCPP_RESPONSE_UNLOCKED;
   }
 
   private handleRequestGetConfiguration(
@@ -526,9 +450,9 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       true
     );
     if (!keyToChange) {
-      return Constants.OCPP_CONFIGURATION_RESPONSE_NOT_SUPPORTED;
+      return OCPPConstants.OCPP_CONFIGURATION_RESPONSE_NOT_SUPPORTED;
     } else if (keyToChange && keyToChange.readonly) {
-      return Constants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
+      return OCPPConstants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
     } else if (keyToChange && !keyToChange.readonly) {
       let valueChanged = false;
       if (keyToChange.value !== commandPayload.value) {
@@ -564,9 +488,9 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         chargingStation.restartWebSocketPing();
       }
       if (keyToChange.reboot) {
-        return Constants.OCPP_CONFIGURATION_RESPONSE_REBOOT_REQUIRED;
+        return OCPPConstants.OCPP_CONFIGURATION_RESPONSE_REBOOT_REQUIRED;
       }
-      return Constants.OCPP_CONFIGURATION_RESPONSE_ACCEPTED;
+      return OCPPConstants.OCPP_CONFIGURATION_RESPONSE_ACCEPTED;
     }
   }
 
@@ -581,7 +505,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         OCPP16IncomingRequestCommand.SET_CHARGING_PROFILE
       ) === false
     ) {
-      return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_NOT_SUPPORTED;
+      return OCPPConstants.OCPP_SET_CHARGING_PROFILE_RESPONSE_NOT_SUPPORTED;
     }
     if (chargingStation.connectors.has(commandPayload.connectorId) === false) {
       logger.error(
@@ -589,14 +513,14 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           commandPayload.connectorId
         }`
       );
-      return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
+      return OCPPConstants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
     }
     if (
       commandPayload.csChargingProfiles.chargingProfilePurpose ===
         ChargingProfilePurposeType.CHARGE_POINT_MAX_PROFILE &&
       commandPayload.connectorId !== 0
     ) {
-      return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
+      return OCPPConstants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
     }
     if (
       commandPayload.csChargingProfiles.chargingProfilePurpose ===
@@ -610,7 +534,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           commandPayload.connectorId
         } without a started transaction`
       );
-      return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
+      return OCPPConstants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
     }
     OCPP16ServiceUtils.setChargingProfile(
       chargingStation,
@@ -620,10 +544,10 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
     logger.debug(
       `${chargingStation.logPrefix()} Charging profile(s) set on connector id ${
         commandPayload.connectorId
-      }, dump their stack: %j`,
-      chargingStation.getConnectorStatus(commandPayload.connectorId).chargingProfiles
+      }: %j`,
+      commandPayload.csChargingProfiles
     );
-    return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+    return OCPPConstants.OCPP_SET_CHARGING_PROFILE_RESPONSE_ACCEPTED;
   }
 
   private handleRequestClearChargingProfile(
@@ -637,7 +561,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         OCPP16IncomingRequestCommand.CLEAR_CHARGING_PROFILE
       ) === false
     ) {
-      return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
+      return OCPPConstants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
     }
     if (chargingStation.connectors.has(commandPayload.connectorId) === false) {
       logger.error(
@@ -645,7 +569,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           commandPayload.connectorId
         }`
       );
-      return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
+      return OCPPConstants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
     }
     const connectorStatus = chargingStation.getConnectorStatus(commandPayload.connectorId);
     if (commandPayload.connectorId && !Utils.isEmptyArray(connectorStatus.chargingProfiles)) {
@@ -653,10 +577,9 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       logger.debug(
         `${chargingStation.logPrefix()} Charging profile(s) cleared on connector id ${
           commandPayload.connectorId
-        }, dump their stack: %j`,
-        connectorStatus.chargingProfiles
+        }`
       );
-      return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+      return OCPPConstants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
     }
     if (!commandPayload.connectorId) {
       let clearedCP = false;
@@ -690,10 +613,8 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
               if (clearCurrentCP) {
                 connectorStatus.chargingProfiles.splice(index, 1);
                 logger.debug(
-                  `${chargingStation.logPrefix()} Matching charging profile(s) cleared on connector id ${
-                    commandPayload.connectorId
-                  }, dump their stack: %j`,
-                  connectorStatus.chargingProfiles
+                  `${chargingStation.logPrefix()} Matching charging profile(s) cleared: %j`,
+                  chargingProfile
                 );
                 clearedCP = true;
               }
@@ -701,10 +622,10 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         }
       }
       if (clearedCP) {
-        return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+        return OCPPConstants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
       }
     }
-    return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
+    return OCPPConstants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
   }
 
   private async handleRequestChangeAvailability(
@@ -716,20 +637,20 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       logger.error(
         `${chargingStation.logPrefix()} Trying to change the availability of a non existing connector Id ${connectorId.toString()}`
       );
-      return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
+      return OCPPConstants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
     }
     const chargePointStatus: OCPP16ChargePointStatus =
       commandPayload.type === OCPP16AvailabilityType.OPERATIVE
         ? OCPP16ChargePointStatus.AVAILABLE
         : OCPP16ChargePointStatus.UNAVAILABLE;
     if (connectorId === 0) {
-      let response: ChangeAvailabilityResponse = Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
+      let response: ChangeAvailabilityResponse = OCPPConstants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
       for (const id of chargingStation.connectors.keys()) {
         if (chargingStation.getConnectorStatus(id)?.transactionStarted === true) {
-          response = Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
+          response = OCPPConstants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
         }
         chargingStation.getConnectorStatus(id).availability = commandPayload.type;
-        if (response === Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED) {
+        if (response === OCPPConstants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED) {
           await chargingStation.ocppRequestService.requestHandler<
             OCPP16StatusNotificationRequest,
             OCPP16StatusNotificationResponse
@@ -750,7 +671,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
     ) {
       if (chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
         chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
-        return Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
+        return OCPPConstants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
       }
       chargingStation.getConnectorStatus(connectorId).availability = commandPayload.type;
       await chargingStation.ocppRequestService.requestHandler<
@@ -762,26 +683,20 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
       });
       chargingStation.getConnectorStatus(connectorId).status = chargePointStatus;
-      return Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
+      return OCPPConstants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
     }
-    return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
+    return OCPPConstants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
   }
 
   private async handleRequestRemoteStartTransaction(
     chargingStation: ChargingStation,
     commandPayload: RemoteStartTransactionRequest
-  ): Promise<DefaultResponse> {
+  ): Promise<GenericResponse> {
     const transactionConnectorId = commandPayload.connectorId;
     if (chargingStation.connectors.has(transactionConnectorId) === true) {
-      const remoteStartTransactionLogMsg =
-        chargingStation.logPrefix() +
-        ' Transaction remotely STARTED on ' +
-        chargingStation.stationInfo.chargingStationId +
-        '#' +
-        transactionConnectorId.toString() +
-        " for idTag '" +
-        commandPayload.idTag +
-        "'";
+      const remoteStartTransactionLogMsg = `${chargingStation.logPrefix()} Transaction remotely STARTED on ${
+        chargingStation.stationInfo.chargingStationId
+      }#${transactionConnectorId.toString()} for idTag '${commandPayload.idTag}'`;
       await chargingStation.ocppRequestService.requestHandler<
         OCPP16StatusNotificationRequest,
         OCPP16StatusNotificationResponse
@@ -847,7 +762,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
                 ).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED
               ) {
                 logger.debug(remoteStartTransactionLogMsg);
-                return Constants.OCPP_RESPONSE_ACCEPTED;
+                return OCPPConstants.OCPP_RESPONSE_ACCEPTED;
               }
               return this.notifyRemoteStartTransactionRejected(
                 chargingStation,
@@ -888,7 +803,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
             ).idTagInfo.status === OCPP16AuthorizationStatus.ACCEPTED
           ) {
             logger.debug(remoteStartTransactionLogMsg);
-            return Constants.OCPP_RESPONSE_ACCEPTED;
+            return OCPPConstants.OCPP_RESPONSE_ACCEPTED;
           }
           return this.notifyRemoteStartTransactionRejected(
             chargingStation,
@@ -919,7 +834,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
     chargingStation: ChargingStation,
     connectorId: number,
     idTag: string
-  ): Promise<DefaultResponse> {
+  ): Promise<GenericResponse> {
     if (
       chargingStation.getConnectorStatus(connectorId).status !== OCPP16ChargePointStatus.AVAILABLE
     ) {
@@ -934,18 +849,11 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
       chargingStation.getConnectorStatus(connectorId).status = OCPP16ChargePointStatus.AVAILABLE;
     }
     logger.warn(
-      chargingStation.logPrefix() +
-        ' Remote starting transaction REJECTED on connector Id ' +
-        connectorId.toString() +
-        ", idTag '" +
-        idTag +
-        "', availability '" +
-        chargingStation.getConnectorStatus(connectorId).availability +
-        "', status '" +
-        chargingStation.getConnectorStatus(connectorId).status +
-        "'"
+      `${chargingStation.logPrefix()} Remote starting transaction REJECTED on connector Id ${connectorId.toString()}, idTag '${idTag}', availability '${
+        chargingStation.getConnectorStatus(connectorId).availability
+      }', status '${chargingStation.getConnectorStatus(connectorId).status}'`
     );
-    return Constants.OCPP_RESPONSE_REJECTED;
+    return OCPPConstants.OCPP_RESPONSE_REJECTED;
   }
 
   private setRemoteStartTransactionChargingProfile(
@@ -956,8 +864,8 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
     if (cp && cp.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE) {
       OCPP16ServiceUtils.setChargingProfile(chargingStation, connectorId, cp);
       logger.debug(
-        `${chargingStation.logPrefix()} Charging profile(s) set at remote start transaction on connector id ${connectorId}, dump their stack: %j`,
-        chargingStation.getConnectorStatus(connectorId).chargingProfiles
+        `${chargingStation.logPrefix()} Charging profile(s) set at remote start transaction on connector id ${connectorId}: %j`,
+        cp
       );
       return true;
     } else if (cp && cp.chargingProfilePurpose !== ChargingProfilePurposeType.TX_PROFILE) {
@@ -975,7 +883,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
   private async handleRequestRemoteStopTransaction(
     chargingStation: ChargingStation,
     commandPayload: RemoteStopTransactionRequest
-  ): Promise<DefaultResponse> {
+  ): Promise<GenericResponse> {
     const transactionId = commandPayload.transactionId;
     for (const connectorId of chargingStation.connectors.keys()) {
       if (
@@ -996,17 +904,15 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           OCPP16StopTransactionReason.REMOTE
         );
         if (stopResponse.idTagInfo?.status === OCPP16AuthorizationStatus.ACCEPTED) {
-          return Constants.OCPP_RESPONSE_ACCEPTED;
+          return OCPPConstants.OCPP_RESPONSE_ACCEPTED;
         }
-        return Constants.OCPP_RESPONSE_REJECTED;
+        return OCPPConstants.OCPP_RESPONSE_REJECTED;
       }
     }
     logger.warn(
-      chargingStation.logPrefix() +
-        ' Trying to remote stop a non existing transaction ' +
-        transactionId.toString()
+      `${chargingStation.logPrefix()} Trying to remote stop a non existing transaction ${transactionId.toString()}`
     );
-    return Constants.OCPP_RESPONSE_REJECTED;
+    return OCPPConstants.OCPP_RESPONSE_REJECTED;
   }
 
   private handleRequestUpdateFirmware(
@@ -1020,15 +926,107 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         OCPP16IncomingRequestCommand.UPDATE_FIRMWARE
       ) === false
     ) {
-      return Constants.OCPP_RESPONSE_EMPTY;
+      logger.warn(
+        `${chargingStation.logPrefix()} ${moduleName}.handleRequestUpdateFirmware: Cannot simulate firmware update: feature profile not supported`
+      );
+      return OCPPConstants.OCPP_RESPONSE_EMPTY;
+    }
+    if (
+      !Utils.isNullOrUndefined(chargingStation.stationInfo.firmwareStatus) &&
+      chargingStation.stationInfo.firmwareStatus !== OCPP16FirmwareStatus.Installed
+    ) {
+      logger.warn(
+        `${chargingStation.logPrefix()} ${moduleName}.handleRequestUpdateFirmware: Cannot simulate firmware update: firmware update is already in progress`
+      );
+      return OCPPConstants.OCPP_RESPONSE_EMPTY;
+    }
+    const retrieveDate = Utils.convertToDate(commandPayload.retrieveDate);
+    const now = Date.now();
+    if (retrieveDate.getTime() <= now) {
+      this.asyncResource
+        .runInAsyncScope(
+          this.updateFirmware.bind(this) as (
+            this: OCPP16IncomingRequestService,
+            ...args: any[]
+          ) => Promise<void>,
+          this,
+          chargingStation
+        )
+        .catch(() => {
+          /* This is intentional */
+        });
+    } else {
+      setTimeout(() => {
+        this.updateFirmware(chargingStation).catch(() => {
+          /* Intentional */
+        });
+      }, retrieveDate.getTime() - now);
+    }
+    return OCPPConstants.OCPP_RESPONSE_EMPTY;
+  }
+
+  private async updateFirmware(
+    chargingStation: ChargingStation,
+    maxDelay = 30,
+    minDelay = 15
+  ): Promise<void> {
+    chargingStation.stopAutomaticTransactionGenerator();
+    for (const connectorId of chargingStation.connectors.keys()) {
+      if (
+        connectorId > 0 &&
+        chargingStation.getConnectorStatus(connectorId).transactionStarted === false
+      ) {
+        await chargingStation.ocppRequestService.requestHandler<
+          OCPP16StatusNotificationRequest,
+          OCPP16StatusNotificationResponse
+        >(chargingStation, OCPP16RequestCommand.STATUS_NOTIFICATION, {
+          connectorId,
+          status: OCPP16ChargePointStatus.UNAVAILABLE,
+          errorCode: OCPP16ChargePointErrorCode.NO_ERROR,
+        });
+        chargingStation.getConnectorStatus(connectorId).status =
+          OCPP16ChargePointStatus.UNAVAILABLE;
+      }
+    }
+    if (
+      chargingStation.stationInfo?.firmwareUpgrade?.failureStatus &&
+      !Utils.isEmptyString(chargingStation.stationInfo?.firmwareUpgrade?.failureStatus)
+    ) {
+      await chargingStation.ocppRequestService.requestHandler<
+        OCPP16FirmwareStatusNotificationRequest,
+        OCPP16FirmwareStatusNotificationResponse
+      >(chargingStation, OCPP16RequestCommand.FIRMWARE_STATUS_NOTIFICATION, {
+        status: chargingStation.stationInfo?.firmwareUpgrade?.failureStatus,
+      });
+      return;
+    }
+    await chargingStation.ocppRequestService.requestHandler<
+      OCPP16FirmwareStatusNotificationRequest,
+      OCPP16FirmwareStatusNotificationResponse
+    >(chargingStation, OCPP16RequestCommand.FIRMWARE_STATUS_NOTIFICATION, {
+      status: OCPP16FirmwareStatus.Downloading,
+    });
+    chargingStation.stationInfo.firmwareStatus = OCPP16FirmwareStatus.Downloading;
+    await Utils.sleep(Utils.getRandomInteger(maxDelay, minDelay) * 1000);
+    await chargingStation.ocppRequestService.requestHandler<
+      OCPP16FirmwareStatusNotificationRequest,
+      OCPP16FirmwareStatusNotificationResponse
+    >(chargingStation, OCPP16RequestCommand.FIRMWARE_STATUS_NOTIFICATION, {
+      status: OCPP16FirmwareStatus.Downloaded,
+    });
+    chargingStation.stationInfo.firmwareStatus = OCPP16FirmwareStatus.Downloaded;
+    await Utils.sleep(Utils.getRandomInteger(maxDelay, minDelay) * 1000);
+    await chargingStation.ocppRequestService.requestHandler<
+      OCPP16FirmwareStatusNotificationRequest,
+      OCPP16FirmwareStatusNotificationResponse
+    >(chargingStation, OCPP16RequestCommand.FIRMWARE_STATUS_NOTIFICATION, {
+      status: OCPP16FirmwareStatus.Installing,
+    });
+    chargingStation.stationInfo.firmwareStatus = OCPP16FirmwareStatus.Installing;
+    if (chargingStation.stationInfo?.firmwareUpgrade?.reset === true) {
+      await Utils.sleep(Utils.getRandomInteger(maxDelay, minDelay) * 1000);
+      await chargingStation.reset(OCPP16StopTransactionReason.REBOOT);
     }
-    logger.debug(
-      chargingStation.logPrefix() +
-        ' ' +
-        OCPP16IncomingRequestCommand.UPDATE_FIRMWARE +
-        ' request received: %j',
-      commandPayload
-    );
   }
 
   private async handleRequestGetDiagnostics(
@@ -1042,15 +1040,11 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
       ) === false
     ) {
-      return Constants.OCPP_RESPONSE_EMPTY;
+      logger.warn(
+        `${chargingStation.logPrefix()} ${moduleName}.handleRequestGetDiagnostics: Cannot get diagnostics: feature profile not supported`
+      );
+      return OCPPConstants.OCPP_RESPONSE_EMPTY;
     }
-    logger.debug(
-      chargingStation.logPrefix() +
-        ' ' +
-        OCPP16IncomingRequestCommand.GET_DIAGNOSTICS +
-        ' request received: %j',
-      commandPayload
-    );
     const uri = new URL(commandPayload.location);
     if (uri.protocol.startsWith('ftp:')) {
       let ftpClient: Client;
@@ -1059,7 +1053,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           .readdirSync(path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../../'))
           .filter((file) => file.endsWith('.log'))
           .map((file) => path.join('./', file));
-        const diagnosticsArchive = chargingStation.stationInfo.chargingStationId + '_logs.tar.gz';
+        const diagnosticsArchive = `${chargingStation.stationInfo.chargingStationId}_logs.tar.gz`;
         tar.create({ gzip: true }, logFiles).pipe(fs.createWriteStream(diagnosticsArchive));
         ftpClient = new Client();
         const accessResponse = await ftpClient.access({
@@ -1070,31 +1064,39 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         });
         let uploadResponse: FTPResponse;
         if (accessResponse.code === 220) {
-          // eslint-disable-next-line @typescript-eslint/no-misused-promises
-          ftpClient.trackProgress(async (info) => {
+          ftpClient.trackProgress((info) => {
             logger.info(
               `${chargingStation.logPrefix()} ${
                 info.bytes / 1024
               } bytes transferred from diagnostics archive ${info.name}`
             );
-            await chargingStation.ocppRequestService.requestHandler<
-              DiagnosticsStatusNotificationRequest,
-              DiagnosticsStatusNotificationResponse
-            >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
-              status: OCPP16DiagnosticsStatus.Uploading,
-            });
+            chargingStation.ocppRequestService
+              .requestHandler<
+                OCPP16DiagnosticsStatusNotificationRequest,
+                OCPP16DiagnosticsStatusNotificationResponse
+              >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
+                status: OCPP16DiagnosticsStatus.Uploading,
+              })
+              .catch((error) => {
+                logger.error(
+                  `${chargingStation.logPrefix()} ${moduleName}.handleRequestGetDiagnostics: Error while sending '${
+                    OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION
+                  }'`,
+                  error
+                );
+              });
           });
           uploadResponse = await ftpClient.uploadFrom(
             path.join(
               path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../../'),
               diagnosticsArchive
             ),
-            uri.pathname + diagnosticsArchive
+            `${uri.pathname}${diagnosticsArchive}`
           );
           if (uploadResponse.code === 226) {
             await chargingStation.ocppRequestService.requestHandler<
-              DiagnosticsStatusNotificationRequest,
-              DiagnosticsStatusNotificationResponse
+              OCPP16DiagnosticsStatusNotificationRequest,
+              OCPP16DiagnosticsStatusNotificationResponse
             >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
               status: OCPP16DiagnosticsStatus.Uploaded,
             });
@@ -1106,7 +1108,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           throw new OCPPError(
             ErrorType.GENERIC_ERROR,
             `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${
-              uploadResponse?.code && '|' + uploadResponse?.code.toString()
+              uploadResponse?.code && `|${uploadResponse?.code.toString()}`
             }`,
             OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
           );
@@ -1114,14 +1116,14 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         throw new OCPPError(
           ErrorType.GENERIC_ERROR,
           `Diagnostics transfer failed with error code ${accessResponse.code.toString()}${
-            uploadResponse?.code && '|' + uploadResponse?.code.toString()
+            uploadResponse?.code && `|${uploadResponse?.code.toString()}`
           }`,
           OCPP16IncomingRequestCommand.GET_DIAGNOSTICS
         );
       } catch (error) {
         await chargingStation.ocppRequestService.requestHandler<
-          DiagnosticsStatusNotificationRequest,
-          DiagnosticsStatusNotificationResponse
+          OCPP16DiagnosticsStatusNotificationRequest,
+          OCPP16DiagnosticsStatusNotificationResponse
         >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
           status: OCPP16DiagnosticsStatus.UploadFailed,
         });
@@ -1132,7 +1134,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
           chargingStation,
           OCPP16IncomingRequestCommand.GET_DIAGNOSTICS,
           error as Error,
-          { errorResponse: Constants.OCPP_RESPONSE_EMPTY }
+          { errorResponse: OCPPConstants.OCPP_RESPONSE_EMPTY }
         );
       }
     } else {
@@ -1142,12 +1144,12 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         } to transfer the diagnostic logs archive`
       );
       await chargingStation.ocppRequestService.requestHandler<
-        DiagnosticsStatusNotificationRequest,
-        DiagnosticsStatusNotificationResponse
+        OCPP16DiagnosticsStatusNotificationRequest,
+        OCPP16DiagnosticsStatusNotificationResponse
       >(chargingStation, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION, {
         status: OCPP16DiagnosticsStatus.UploadFailed,
       });
-      return Constants.OCPP_RESPONSE_EMPTY;
+      return OCPPConstants.OCPP_RESPONSE_EMPTY;
     }
   }
 
@@ -1166,7 +1168,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         commandPayload.requestedMessage
       )
     ) {
-      return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
+      return OCPPConstants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
     }
     if (
       !OCPP16ServiceUtils.isConnectorIdValid(
@@ -1175,7 +1177,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         commandPayload.connectorId
       )
     ) {
-      return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED;
+      return OCPPConstants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED;
     }
     try {
       switch (commandPayload.requestedMessage) {
@@ -1195,7 +1197,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
                 /* This is intentional */
               });
           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
-          return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
+          return OCPPConstants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
         case OCPP16MessageTrigger.Heartbeat:
           setTimeout(() => {
             chargingStation.ocppRequestService
@@ -1211,7 +1213,7 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
                 /* This is intentional */
               });
           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
-          return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
+          return OCPPConstants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
         case OCPP16MessageTrigger.StatusNotification:
           setTimeout(() => {
             if (commandPayload?.connectorId) {
@@ -1255,16 +1257,16 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
               }
             }
           }, Constants.OCPP_TRIGGER_MESSAGE_DELAY);
-          return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
+          return OCPPConstants.OCPP_TRIGGER_MESSAGE_RESPONSE_ACCEPTED;
         default:
-          return Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
+          return OCPPConstants.OCPP_TRIGGER_MESSAGE_RESPONSE_NOT_IMPLEMENTED;
       }
     } catch (error) {
       return this.handleIncomingRequestError(
         chargingStation,
         OCPP16IncomingRequestCommand.TRIGGER_MESSAGE,
         error as Error,
-        { errorResponse: Constants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED }
+        { errorResponse: OCPPConstants.OCPP_TRIGGER_MESSAGE_RESPONSE_REJECTED }
       );
     }
   }
@@ -1287,8 +1289,17 @@ export default class OCPP16IncomingRequestService extends OCPPIncomingRequestSer
         chargingStation,
         OCPP16IncomingRequestCommand.DATA_TRANSFER,
         error as Error,
-        { errorResponse: Constants.OCPP_DATA_TRANSFER_RESPONSE_REJECTED }
+        { errorResponse: OCPPConstants.OCPP_DATA_TRANSFER_RESPONSE_REJECTED }
       );
     }
   }
+
+  private parseJsonSchemaFile<T extends JsonType>(relativePath: string): JSONSchemaType<T> {
+    return JSON.parse(
+      fs.readFileSync(
+        path.resolve(path.dirname(fileURLToPath(import.meta.url)), relativePath),
+        'utf8'
+      )
+    ) as JSONSchemaType<T>;
+  }
 }