fix: fix worker options argument passing to worker pool/set
[e-mobility-charging-stations-simulator.git] / src / charging-station / ChargingStation.ts
index 22d554d1341dbcbe8bf5ec410e5a6071acd0dbd0..726a2ce9fc63ee06253dc379d003930f9a791888 100644 (file)
@@ -9,31 +9,24 @@ import { parentPort } from 'node:worker_threads';
 import merge from 'just-merge';
 import WebSocket, { type RawData } from 'ws';
 
+import { AutomaticTransactionGenerator } from './AutomaticTransactionGenerator';
+import { ChargingStationWorkerBroadcastChannel } from './broadcast-channel/ChargingStationWorkerBroadcastChannel';
+import { ChargingStationConfigurationUtils } from './ChargingStationConfigurationUtils';
+import { ChargingStationUtils } from './ChargingStationUtils';
+import { IdTagsCache } from './IdTagsCache';
 import {
-  AutomaticTransactionGenerator,
-  ChargingStationConfigurationUtils,
-  ChargingStationUtils,
-  ChargingStationWorkerBroadcastChannel,
-  IdTagsCache,
-  MessageChannelUtils,
-  SharedLRUCache,
-} from './internal';
-import {
-  // OCPP16IncomingRequestService,
+  OCPP16IncomingRequestService,
   OCPP16RequestService,
-  // OCPP16ResponseService,
+  OCPP16ResponseService,
   OCPP16ServiceUtils,
   OCPP20IncomingRequestService,
   OCPP20RequestService,
-  // OCPP20ResponseService,
+  OCPP20ResponseService,
   type OCPPIncomingRequestService,
   type OCPPRequestService,
-  // OCPPServiceUtils,
+  OCPPServiceUtils,
 } from './ocpp';
-import { OCPP16IncomingRequestService } from './ocpp/1.6/OCPP16IncomingRequestService';
-import { OCPP16ResponseService } from './ocpp/1.6/OCPP16ResponseService';
-import { OCPP20ResponseService } from './ocpp/2.0/OCPP20ResponseService';
-import { OCPPServiceUtils } from './ocpp/OCPPServiceUtils';
+import { SharedLRUCache } from './SharedLRUCache';
 import { BaseError, OCPPError } from '../exception';
 import { PerformanceStatistics } from '../performance';
 import {
@@ -46,7 +39,6 @@ import {
   type ChargingStationInfo,
   type ChargingStationOcppConfiguration,
   type ChargingStationTemplate,
-  ConnectorPhaseRotation,
   type ConnectorStatus,
   ConnectorStatusEnum,
   CurrentType,
@@ -75,8 +67,12 @@ import {
   PowerUnits,
   RegistrationStatusEnumType,
   RequestCommand,
+  type Reservation,
+  ReservationFilterKey,
+  ReservationTerminationReason,
   type Response,
   StandardParametersKey,
+  type Status,
   type StatusNotificationRequest,
   type StatusNotificationResponse,
   StopTransactionReason,
@@ -91,12 +87,21 @@ import {
 } from '../types';
 import {
   ACElectricUtils,
+  AsyncLock,
+  AsyncLockType,
   Configuration,
   Constants,
   DCElectricUtils,
-  FileUtils,
   Utils,
+  buildChargingStationAutomaticTransactionGeneratorConfiguration,
+  buildConnectorsStatus,
+  buildEvsesStatus,
+  buildStartedMessage,
+  buildStoppedMessage,
+  buildUpdatedMessage,
+  handleFileException,
   logger,
+  watchJsonFile,
 } from '../utils';
 
 export class ChargingStation {
@@ -129,9 +134,11 @@ export class ChargingStation {
   private wsConnectionRestarted: boolean;
   private autoReconnectRetryCount: number;
   private templateFileWatcher!: fs.FSWatcher | undefined;
+  private templateFileHash!: string;
   private readonly sharedLRUCache: SharedLRUCache;
   private webSocketPingSetInterval!: NodeJS.Timeout;
   private readonly chargingStationWorkerBroadcastChannel: ChargingStationWorkerBroadcastChannel;
+  private reservationExpirationSetInterval?: NodeJS.Timeout;
 
   constructor(index: number, templateFile: string) {
     this.started = false;
@@ -152,24 +159,30 @@ export class ChargingStation {
     this.initialize();
   }
 
+  public get hasEvses(): boolean {
+    return this.connectors.size === 0 && this.evses.size > 0;
+  }
+
   private get wsConnectionUrl(): URL {
     return new URL(
       `${
         this.getSupervisionUrlOcppConfiguration() &&
-        Utils.isNotEmptyString(this.getSupervisionUrlOcppKey())
+        Utils.isNotEmptyString(this.getSupervisionUrlOcppKey()) &&
+        Utils.isNotEmptyString(
+          ChargingStationConfigurationUtils.getConfigurationKey(
+            this,
+            this.getSupervisionUrlOcppKey()
+          )?.value
+        )
           ? ChargingStationConfigurationUtils.getConfigurationKey(
               this,
               this.getSupervisionUrlOcppKey()
-            )?.value
+            ).value
           : this.configuredSupervisionUrl.href
       }/${this.stationInfo.chargingStationId}`
     );
   }
 
-  private get hasEvses(): boolean {
-    return this.connectors.size === 0 && this.evses.size > 0;
-  }
-
   public logPrefix = (): string => {
     return Utils.logPrefix(
       ` ${
@@ -182,8 +195,9 @@ export class ChargingStation {
   };
 
   public hasIdTags(): boolean {
-    const idTagsFile = ChargingStationUtils.getIdTagsFile(this.stationInfo);
-    return Utils.isNotEmptyArray(this.idTagsCache.getIdTags(idTagsFile));
+    return Utils.isNotEmptyArray(
+      this.idTagsCache.getIdTags(ChargingStationUtils.getIdTagsFile(this.stationInfo))
+    );
   }
 
   public getEnableStatistics(): boolean {
@@ -218,26 +232,26 @@ export class ChargingStation {
     return this?.bootNotificationResponse?.status;
   }
 
-  public isInUnknownState(): boolean {
+  public inUnknownState(): boolean {
     return Utils.isNullOrUndefined(this?.bootNotificationResponse?.status);
   }
 
-  public isInPendingState(): boolean {
+  public inPendingState(): boolean {
     return this?.bootNotificationResponse?.status === RegistrationStatusEnumType.PENDING;
   }
 
-  public isInAcceptedState(): boolean {
+  public inAcceptedState(): boolean {
     return this?.bootNotificationResponse?.status === RegistrationStatusEnumType.ACCEPTED;
   }
 
-  public isInRejectedState(): boolean {
+  public inRejectedState(): boolean {
     return this?.bootNotificationResponse?.status === RegistrationStatusEnumType.REJECTED;
   }
 
   public isRegistered(): boolean {
     return (
-      this.isInUnknownState() === false &&
-      (this.isInAcceptedState() === true || this.isInPendingState() === true)
+      this.inUnknownState() === false &&
+      (this.inAcceptedState() === true || this.inPendingState() === true)
     );
   }
 
@@ -245,6 +259,18 @@ export class ChargingStation {
     return this.getConnectorStatus(0)?.availability === AvailabilityType.Operative;
   }
 
+  public hasConnector(connectorId: number): boolean {
+    if (this.hasEvses) {
+      for (const evseStatus of this.evses.values()) {
+        if (evseStatus.connectors.has(connectorId)) {
+          return true;
+        }
+      }
+      return false;
+    }
+    return this.connectors.has(connectorId);
+  }
+
   public isConnectorAvailable(connectorId: number): boolean {
     return (
       connectorId > 0 &&
@@ -254,19 +280,27 @@ export class ChargingStation {
 
   public getNumberOfConnectors(): number {
     if (this.hasEvses) {
+      if (this.evses.size === 0) {
+        throw new BaseError('Evses not initialized, cannot get number of connectors');
+      }
       let numberOfConnectors = 0;
       for (const [evseId, evseStatus] of this.evses) {
-        if (evseId === 0) {
-          continue;
+        if (evseId > 0) {
+          numberOfConnectors += evseStatus.connectors.size;
         }
-        numberOfConnectors += evseStatus.connectors.size;
       }
       return numberOfConnectors;
     }
+    if (this.connectors.size === 0) {
+      throw new BaseError('Connectors not initialized, cannot get number of connectors');
+    }
     return this.connectors.has(0) ? this.connectors.size - 1 : this.connectors.size;
   }
 
   public getNumberOfEvses(): number {
+    if (this.evses.size === 0) {
+      throw new BaseError('Evses not initialized, cannot get number of evses');
+    }
     return this.evses.has(0) ? this.evses.size - 1 : this.evses.size;
   }
 
@@ -277,6 +311,7 @@ export class ChargingStation {
           return evseStatus.connectors.get(connectorId);
         }
       }
+      return undefined;
     }
     return this.connectors.get(connectorId);
   }
@@ -292,13 +327,10 @@ export class ChargingStation {
   public getVoltageOut(stationInfo?: ChargingStationInfo): number | undefined {
     const defaultVoltageOut = ChargingStationUtils.getDefaultVoltageOut(
       this.getCurrentOutType(stationInfo),
-      this.templateFile,
-      this.logPrefix()
+      this.logPrefix(),
+      this.templateFile
     );
-    const localStationInfo: ChargingStationInfo = stationInfo ?? this.stationInfo;
-    return !Utils.isUndefined(localStationInfo.voltageOut)
-      ? localStationInfo.voltageOut
-      : defaultVoltageOut;
+    return (stationInfo ?? this.stationInfo).voltageOut ?? defaultVoltageOut;
   }
 
   public getMaximumPower(stationInfo?: ChargingStationInfo): number {
@@ -317,7 +349,8 @@ export class ChargingStation {
           ? ACElectricUtils.powerTotal(
               this.getNumberOfPhases(),
               this.getVoltageOut(),
-              this.getAmperageLimitation() * this.getNumberOfConnectors()
+              this.getAmperageLimitation() *
+                (this.hasEvses ? this.getNumberOfEvses() : this.getNumberOfConnectors())
             )
           : DCElectricUtils.power(this.getVoltageOut(), this.getAmperageLimitation())) /
         this.powerDivider;
@@ -355,6 +388,26 @@ export class ChargingStation {
     }
   }
 
+  public getNumberOfRunningTransactions(): number {
+    let trxCount = 0;
+    if (this.hasEvses) {
+      for (const evseStatus of this.evses.values()) {
+        for (const connectorStatus of evseStatus.connectors.values()) {
+          if (connectorStatus.transactionStarted === true) {
+            ++trxCount;
+          }
+        }
+      }
+    } else {
+      for (const connectorId of this.connectors.keys()) {
+        if (connectorId > 0 && this.getConnectorStatus(connectorId)?.transactionStarted === true) {
+          ++trxCount;
+        }
+      }
+    }
+    return trxCount;
+  }
+
   public getOutOfOrderEndMeterValues(): boolean {
     return this.stationInfo?.outOfOrderEndMeterValues ?? false;
   }
@@ -502,7 +555,8 @@ export class ChargingStation {
       );
     } else {
       logger.error(
-        `${this.logPrefix()} Heartbeat interval set to ${this.getHeartbeatInterval()}, not starting the heartbeat`
+        `${this.logPrefix()} Heartbeat interval set to ${this.getHeartbeatInterval()},
+          not starting the heartbeat`
       );
     }
   }
@@ -530,13 +584,15 @@ export class ChargingStation {
     }
     if (!this.getConnectorStatus(connectorId)) {
       logger.error(
-        `${this.logPrefix()} Trying to start MeterValues on non existing connector id ${connectorId.toString()}`
+        `${this.logPrefix()} Trying to start MeterValues on non existing connector id
+          ${connectorId.toString()}`
       );
       return;
     }
     if (this.getConnectorStatus(connectorId)?.transactionStarted === false) {
       logger.error(
-        `${this.logPrefix()} Trying to start MeterValues on connector id ${connectorId} with no transaction started`
+        `${this.logPrefix()} Trying to start MeterValues on connector id ${connectorId}
+          with no transaction started`
       );
       return;
     } else if (
@@ -544,7 +600,8 @@ export class ChargingStation {
       Utils.isNullOrUndefined(this.getConnectorStatus(connectorId)?.transactionId)
     ) {
       logger.error(
-        `${this.logPrefix()} Trying to start MeterValues on connector id ${connectorId} with no transaction id`
+        `${this.logPrefix()} Trying to start MeterValues on connector id ${connectorId}
+          with no transaction id`
       );
       return;
     }
@@ -596,9 +653,12 @@ export class ChargingStation {
         if (this.getEnableStatistics() === true) {
           this.performanceStatistics?.start();
         }
+        if (this.hasFeatureProfile(SupportedFeatureProfiles.Reservation)) {
+          this.startReservationExpirationSetInterval();
+        }
         this.openWSConnection();
         // Monitor charging station template file
-        this.templateFileWatcher = FileUtils.watchJsonFile(
+        this.templateFileWatcher = watchJsonFile(
           this.templateFile,
           FileType.ChargingStationTemplate,
           this.logPrefix(),
@@ -611,14 +671,12 @@ export class ChargingStation {
                     this.templateFile
                   } file have changed, reload`
                 );
-                this.sharedLRUCache.deleteChargingStationTemplate(this.stationInfo?.templateHash);
+                this.sharedLRUCache.deleteChargingStationTemplate(this.templateFileHash);
                 // Initialize
                 this.initialize();
                 // Restart the ATG
                 this.stopAutomaticTransactionGenerator();
-                if (
-                  this.getAutomaticTransactionGeneratorConfigurationFromTemplate()?.enable === true
-                ) {
+                if (this.getAutomaticTransactionGeneratorConfiguration()?.enable === true) {
                   this.startAutomaticTransactionGenerator();
                 }
                 if (this.getEnableStatistics() === true) {
@@ -637,7 +695,7 @@ export class ChargingStation {
           }
         );
         this.started = true;
-        parentPort?.postMessage(MessageChannelUtils.buildStartedMessage(this));
+        parentPort?.postMessage(buildStartedMessage(this));
         this.starting = false;
       } else {
         logger.warn(`${this.logPrefix()} Charging station is already starting...`);
@@ -658,10 +716,11 @@ export class ChargingStation {
         }
         this.sharedLRUCache.deleteChargingStationConfiguration(this.configurationFileHash);
         this.templateFileWatcher?.close();
-        this.sharedLRUCache.deleteChargingStationTemplate(this.stationInfo?.templateHash);
+        this.sharedLRUCache.deleteChargingStationTemplate(this.templateFileHash);
         delete this.bootNotificationResponse;
         this.started = false;
-        parentPort?.postMessage(MessageChannelUtils.buildStoppedMessage(this));
+        this.saveConfiguration();
+        parentPort?.postMessage(buildStoppedMessage(this));
         this.stopping = false;
       } else {
         logger.warn(`${this.logPrefix()} Charging station is already stopping...`);
@@ -680,7 +739,7 @@ export class ChargingStation {
 
   public saveOcppConfiguration(): void {
     if (this.getOcppPersistentConfiguration()) {
-      this.saveConfiguration({ stationInfo: false, connectors: false, evses: false });
+      this.saveConfiguration();
     }
   }
 
@@ -702,12 +761,12 @@ export class ChargingStation {
       terminateOpened: false,
     }
   ): void {
-    options.handshakeTimeout = options?.handshakeTimeout ?? this.getConnectionTimeout() * 1000;
-    params.closeOpened = params?.closeOpened ?? false;
-    params.terminateOpened = params?.terminateOpened ?? false;
+    options = { handshakeTimeout: this.getConnectionTimeout() * 1000, ...options };
+    params = { ...{ closeOpened: false, terminateOpened: false }, ...params };
     if (this.started === false && this.starting === false) {
       logger.warn(
-        `${this.logPrefix()} Cannot open OCPP connection to URL ${this.wsConnectionUrl.toString()} on stopped charging station`
+        `${this.logPrefix()} Cannot open OCPP connection to URL ${this.wsConnectionUrl.toString()}
+          on stopped charging station`
       );
       return;
     }
@@ -726,7 +785,8 @@ export class ChargingStation {
 
     if (this.isWebSocketConnectionOpened() === true) {
       logger.warn(
-        `${this.logPrefix()} OCPP connection to URL ${this.wsConnectionUrl.toString()} is already opened`
+        `${this.logPrefix()} OCPP connection to URL ${this.wsConnectionUrl.toString()}
+          is already opened`
       );
       return;
     }
@@ -771,15 +831,36 @@ export class ChargingStation {
     }
   }
 
-  public startAutomaticTransactionGenerator(
-    connectorIds?: number[],
-    automaticTransactionGeneratorConfiguration?: AutomaticTransactionGeneratorConfiguration
-  ): void {
-    this.automaticTransactionGenerator = AutomaticTransactionGenerator.getInstance(
-      automaticTransactionGeneratorConfiguration ??
-        this.getAutomaticTransactionGeneratorConfigurationFromTemplate(),
-      this
-    );
+  public getAutomaticTransactionGeneratorConfiguration():
+    | AutomaticTransactionGeneratorConfiguration
+    | undefined {
+    let automaticTransactionGeneratorConfiguration:
+      | AutomaticTransactionGeneratorConfiguration
+      | undefined;
+    const automaticTransactionGeneratorConfigurationFromFile =
+      this.getConfigurationFromFile()?.automaticTransactionGenerator;
+    if (
+      this.getAutomaticTransactionGeneratorPersistentConfiguration() &&
+      automaticTransactionGeneratorConfigurationFromFile
+    ) {
+      automaticTransactionGeneratorConfiguration =
+        automaticTransactionGeneratorConfigurationFromFile;
+    } else {
+      automaticTransactionGeneratorConfiguration =
+        this.getTemplateFromFile()?.AutomaticTransactionGenerator;
+    }
+    return {
+      ...Constants.DEFAULT_ATG_CONFIGURATION,
+      ...automaticTransactionGeneratorConfiguration,
+    };
+  }
+
+  public getAutomaticTransactionGeneratorStatuses(): Status[] | undefined {
+    return this.getConfigurationFromFile()?.automaticTransactionGeneratorStatuses;
+  }
+
+  public startAutomaticTransactionGenerator(connectorIds?: number[]): void {
+    this.automaticTransactionGenerator = AutomaticTransactionGenerator.getInstance(this);
     if (Utils.isNotEmptyArray(connectorIds)) {
       for (const connectorId of connectorIds) {
         this.automaticTransactionGenerator?.startConnector(connectorId);
@@ -787,7 +868,8 @@ export class ChargingStation {
     } else {
       this.automaticTransactionGenerator?.start();
     }
-    parentPort?.postMessage(MessageChannelUtils.buildUpdatedMessage(this));
+    this.saveAutomaticTransactionGeneratorConfiguration();
+    parentPort?.postMessage(buildUpdatedMessage(this));
   }
 
   public stopAutomaticTransactionGenerator(connectorIds?: number[]): void {
@@ -798,7 +880,8 @@ export class ChargingStation {
     } else {
       this.automaticTransactionGenerator?.stop();
     }
-    parentPort?.postMessage(MessageChannelUtils.buildUpdatedMessage(this));
+    this.saveAutomaticTransactionGeneratorConfiguration();
+    parentPort?.postMessage(buildUpdatedMessage(this));
   }
 
   public async stopTransactionOnConnector(
@@ -838,6 +921,186 @@ export class ChargingStation {
     );
   }
 
+  public getReservationOnConnectorId0Enabled(): boolean {
+    return Utils.convertToBoolean(
+      ChargingStationConfigurationUtils.getConfigurationKey(
+        this,
+        StandardParametersKey.ReserveConnectorZeroSupported
+      ).value
+    );
+  }
+
+  public async addReservation(reservation: Reservation): Promise<void> {
+    const [exists, reservationFound] = this.doesReservationExists(reservation);
+    if (exists) {
+      await this.removeReservation(reservationFound, ReservationTerminationReason.REPLACE_EXISTING);
+    }
+    this.getConnectorStatus(reservation.connectorId).reservation = reservation;
+    await OCPPServiceUtils.sendAndSetConnectorStatus(
+      this,
+      reservation.connectorId,
+      ConnectorStatusEnum.Reserved,
+      null,
+      { send: reservation.connectorId !== 0 }
+    );
+  }
+
+  public async removeReservation(
+    reservation: Reservation,
+    reason?: ReservationTerminationReason
+  ): Promise<void> {
+    const connector = this.getConnectorStatus(reservation.connectorId);
+    switch (reason) {
+      case ReservationTerminationReason.CONNECTOR_STATE_CHANGED:
+        delete connector.reservation;
+        break;
+      case ReservationTerminationReason.TRANSACTION_STARTED:
+        delete connector.reservation;
+        break;
+      case ReservationTerminationReason.RESERVATION_CANCELED ||
+        ReservationTerminationReason.REPLACE_EXISTING ||
+        ReservationTerminationReason.EXPIRED:
+        await OCPPServiceUtils.sendAndSetConnectorStatus(
+          this,
+          reservation.connectorId,
+          ConnectorStatusEnum.Available,
+          null,
+          { send: reservation.connectorId !== 0 }
+        );
+        delete connector.reservation;
+        break;
+      default:
+        break;
+    }
+  }
+
+  public getReservationBy(filterKey: ReservationFilterKey, value: number | string): Reservation {
+    if (this.hasEvses) {
+      for (const evse of this.evses.values()) {
+        for (const connector of evse.connectors.values()) {
+          if (connector?.reservation?.[filterKey] === value) {
+            return connector.reservation;
+          }
+        }
+      }
+    } else {
+      for (const connector of this.connectors.values()) {
+        if (connector?.reservation?.[filterKey] === value) {
+          return connector.reservation;
+        }
+      }
+    }
+  }
+
+  public doesReservationExists(reservation: Partial<Reservation>): [boolean, Reservation] {
+    const foundReservation = this.getReservationBy(
+      ReservationFilterKey.RESERVATION_ID,
+      reservation?.id
+    );
+    return Utils.isUndefined(foundReservation) ? [false, null] : [true, foundReservation];
+  }
+
+  public startReservationExpirationSetInterval(customInterval?: number): void {
+    const interval =
+      customInterval ?? Constants.DEFAULT_RESERVATION_EXPIRATION_OBSERVATION_INTERVAL;
+    logger.info(
+      `${this.logPrefix()} Reservation expiration date interval is set to ${interval}
+        and starts on charging station now`
+    );
+    // eslint-disable-next-line @typescript-eslint/no-misused-promises
+    this.reservationExpirationSetInterval = setInterval(async (): Promise<void> => {
+      if (this.hasEvses) {
+        for (const evse of this.evses.values()) {
+          for (const connector of evse.connectors.values()) {
+            if (connector?.reservation?.expiryDate.toString() < new Date().toISOString()) {
+              await this.removeReservation(
+                connector.reservation,
+                ReservationTerminationReason.EXPIRED
+              );
+            }
+          }
+        }
+      } else {
+        for (const connector of this.connectors.values()) {
+          if (connector?.reservation?.expiryDate.toString() < new Date().toISOString()) {
+            await this.removeReservation(
+              connector.reservation,
+              ReservationTerminationReason.EXPIRED
+            );
+          }
+        }
+      }
+    }, interval);
+  }
+
+  public restartReservationExpiryDateSetInterval(): void {
+    this.stopReservationExpirationSetInterval();
+    this.startReservationExpirationSetInterval();
+  }
+
+  public validateIncomingRequestWithReservation(connectorId: number, idTag: string): boolean {
+    const reservation = this.getReservationBy(ReservationFilterKey.CONNECTOR_ID, connectorId);
+    return !Utils.isUndefined(reservation) && reservation.idTag === idTag;
+  }
+
+  public isConnectorReservable(
+    reservationId: number,
+    idTag?: string,
+    connectorId?: number
+  ): boolean {
+    const [alreadyExists] = this.doesReservationExists({ id: reservationId });
+    if (alreadyExists) {
+      return alreadyExists;
+    }
+    const userReservedAlready = Utils.isUndefined(
+      this.getReservationBy(ReservationFilterKey.ID_TAG, idTag)
+    )
+      ? false
+      : true;
+    const notConnectorZero = Utils.isUndefined(connectorId) ? true : connectorId > 0;
+    const freeConnectorsAvailable = this.getNumberOfReservableConnectors() > 0;
+    return !alreadyExists && !userReservedAlready && notConnectorZero && freeConnectorsAvailable;
+  }
+
+  private getNumberOfReservableConnectors(): number {
+    let reservableConnectors = 0;
+    if (this.hasEvses) {
+      for (const evse of this.evses.values()) {
+        reservableConnectors = this.countReservableConnectors(evse.connectors);
+      }
+    } else {
+      reservableConnectors = this.countReservableConnectors(this.connectors);
+    }
+    return reservableConnectors - this.getNumberOfReservationsOnConnectorZero();
+  }
+
+  private countReservableConnectors(connectors: Map<number, ConnectorStatus>) {
+    let reservableConnectors = 0;
+    for (const [connectorId, connector] of connectors) {
+      if (connectorId === 0) {
+        continue;
+      }
+      if (connector.status === ConnectorStatusEnum.Available) {
+        ++reservableConnectors;
+      }
+    }
+    return reservableConnectors;
+  }
+
+  private getNumberOfReservationsOnConnectorZero(): number {
+    let numberOfReservations = 0;
+    if (this.hasEvses) {
+      for (const evse of this.evses.values()) {
+        if (evse.connectors.get(0)?.reservation) {
+          ++numberOfReservations;
+        }
+      }
+    } else if (this.connectors.get(0)?.reservation) {
+      ++numberOfReservations;
+    }
+    return numberOfReservations;
+  }
+
   private flushMessageBuffer(): void {
     if (this.messageBuffer.size > 0) {
       for (const message of this.messageBuffer.values()) {
@@ -865,6 +1128,12 @@ export class ChargingStation {
     return this.stationInfo.supervisionUrlOcppConfiguration ?? false;
   }
 
+  private stopReservationExpirationSetInterval(): void {
+    if (this.reservationExpirationSetInterval) {
+      clearInterval(this.reservationExpirationSetInterval);
+    }
+  }
+
   private getSupervisionUrlOcppKey(): string {
     return this.stationInfo.supervisionUrlOcppKey ?? VendorParametersKey.ConnectionUrl;
   }
@@ -872,8 +1141,8 @@ export class ChargingStation {
   private getTemplateFromFile(): ChargingStationTemplate | undefined {
     let template: ChargingStationTemplate;
     try {
-      if (this.sharedLRUCache.hasChargingStationTemplate(this.stationInfo?.templateHash)) {
-        template = this.sharedLRUCache.getChargingStationTemplate(this.stationInfo.templateHash);
+      if (this.sharedLRUCache.hasChargingStationTemplate(this.templateFileHash)) {
+        template = this.sharedLRUCache.getChargingStationTemplate(this.templateFileHash);
       } else {
         const measureId = `${FileType.ChargingStationTemplate} read`;
         const beginId = PerformanceStatistics.beginMeasure(measureId);
@@ -886,9 +1155,10 @@ export class ChargingStation {
           .update(JSON.stringify(template))
           .digest('hex');
         this.sharedLRUCache.setChargingStationTemplate(template);
+        this.templateFileHash = template.templateHash;
       }
     } catch (error) {
-      FileUtils.handleFileException(
+      handleFileException(
         this.templateFile,
         FileType.ChargingStationTemplate,
         error as NodeJS.ErrnoException,
@@ -900,21 +1170,19 @@ export class ChargingStation {
 
   private getStationInfoFromTemplate(): ChargingStationInfo {
     const stationTemplate: ChargingStationTemplate | undefined = this.getTemplateFromFile();
-    if (Utils.isNullOrUndefined(stationTemplate)) {
-      const errorMsg = `Failed to read charging station template file ${this.templateFile}`;
-      logger.error(`${this.logPrefix()} ${errorMsg}`);
-      throw new BaseError(errorMsg);
-    }
-    if (Utils.isEmptyObject(stationTemplate)) {
-      const errorMsg = `Empty charging station information from template file ${this.templateFile}`;
-      logger.error(`${this.logPrefix()} ${errorMsg}`);
-      throw new BaseError(errorMsg);
-    }
+    ChargingStationUtils.checkTemplate(stationTemplate, this.logPrefix(), this.templateFile);
     ChargingStationUtils.warnTemplateKeysDeprecation(
-      this.templateFile,
       stationTemplate,
-      this.logPrefix()
+      this.logPrefix(),
+      this.templateFile
     );
+    if (stationTemplate?.Connectors) {
+      ChargingStationUtils.checkConnectorsConfiguration(
+        stationTemplate,
+        this.logPrefix(),
+        this.templateFile
+      );
+    }
     const stationInfo: ChargingStationInfo =
       ChargingStationUtils.stationTemplateToStationInfo(stationTemplate);
     stationInfo.hashId = ChargingStationUtils.getHashId(this.index, stationTemplate);
@@ -962,18 +1230,18 @@ export class ChargingStation {
     stationInfo.resetTime = !Utils.isNullOrUndefined(stationTemplate?.resetTime)
       ? stationTemplate.resetTime * 1000
       : Constants.CHARGING_STATION_DEFAULT_RESET_TIME;
-    // Initialize evses or connectors if needed (FIXME: should be factored out)
-    this.initializeConnectorsOrEvses(stationInfo);
     stationInfo.maximumAmperage = this.getMaximumAmperage(stationInfo);
-    ChargingStationUtils.createStationInfoHash(stationInfo);
     return stationInfo;
   }
 
   private getStationInfoFromFile(): ChargingStationInfo | undefined {
     let stationInfo: ChargingStationInfo | undefined;
-    this.getStationInfoPersistentConfiguration() &&
-      (stationInfo = this.getConfigurationFromFile()?.stationInfo);
-    stationInfo && ChargingStationUtils.createStationInfoHash(stationInfo);
+    if (this.getStationInfoPersistentConfiguration()) {
+      stationInfo = this.getConfigurationFromFile()?.stationInfo;
+      if (stationInfo) {
+        delete stationInfo?.infoHash;
+      }
+    }
     return stationInfo;
   }
 
@@ -983,11 +1251,7 @@ export class ChargingStation {
     // Priority:
     // 1. charging station info from template
     // 2. charging station info from configuration file
-    // 3. charging station info attribute
     if (stationInfoFromFile?.templateHash === stationInfoFromTemplate.templateHash) {
-      if (this.stationInfo?.infoHash === stationInfoFromFile?.infoHash) {
-        return this.stationInfo;
-      }
       return stationInfoFromFile;
     }
     stationInfoFromFile &&
@@ -1001,7 +1265,7 @@ export class ChargingStation {
 
   private saveStationInfo(): void {
     if (this.getStationInfoPersistentConfiguration()) {
-      this.saveConfiguration({ ocppConfiguration: false, connectors: false, evses: false });
+      this.saveConfiguration();
     }
   }
 
@@ -1013,17 +1277,33 @@ export class ChargingStation {
     return this.stationInfo?.stationInfoPersistentConfiguration ?? true;
   }
 
+  private getAutomaticTransactionGeneratorPersistentConfiguration(): boolean {
+    return this.stationInfo?.automaticTransactionGeneratorPersistentConfiguration ?? true;
+  }
+
   private handleUnsupportedVersion(version: OCPPVersion) {
-    const errMsg = `Unsupported protocol version '${version}' configured in template file ${this.templateFile}`;
-    logger.error(`${this.logPrefix()} ${errMsg}`);
-    throw new BaseError(errMsg);
+    const errorMsg = `Unsupported protocol version '${version}' configured
+      in template file ${this.templateFile}`;
+    logger.error(`${this.logPrefix()} ${errorMsg}`);
+    throw new BaseError(errorMsg);
   }
 
   private initialize(): void {
+    const stationTemplate = this.getTemplateFromFile();
+    ChargingStationUtils.checkTemplate(stationTemplate, this.logPrefix(), this.templateFile);
     this.configurationFile = path.join(
       path.dirname(this.templateFile.replace('station-templates', 'configurations')),
-      `${ChargingStationUtils.getHashId(this.index, this.getTemplateFromFile())}.json`
+      `${ChargingStationUtils.getHashId(this.index, stationTemplate)}.json`
     );
+    const chargingStationConfiguration = this.getConfigurationFromFile();
+    if (
+      chargingStationConfiguration?.stationInfo?.templateHash === stationTemplate?.templateHash &&
+      (chargingStationConfiguration?.connectorsStatus || chargingStationConfiguration?.evsesStatus)
+    ) {
+      this.initializeConnectorsOrEvsesFromFile(chargingStationConfiguration);
+    } else {
+      this.initializeConnectorsOrEvsesFromTemplate(stationTemplate);
+    }
     this.stationInfo = this.getStationInfo();
     if (
       this.stationInfo.firmwareStatus === FirmwareStatus.Installing &&
@@ -1044,9 +1324,6 @@ export class ChargingStation {
       this.stationInfo.firmwareVersion = match?.join('.');
     }
     this.saveStationInfo();
-    // Avoid duplication of connectors or evses related information in RAM
-    delete this.stationInfo?.Connectors;
-    delete this.stationInfo?.Evses;
     this.configuredSupervisionUrl = this.getConfiguredSupervisionUrl();
     if (this.getEnableStatistics() === true) {
       this.performanceStatistics = PerformanceStatistics.getInstance(
@@ -1262,12 +1539,42 @@ export class ChargingStation {
     this.saveOcppConfiguration();
   }
 
-  private initializeConnectorsOrEvses(stationInfo: ChargingStationInfo) {
-    if (stationInfo?.Connectors && !stationInfo?.Evses) {
-      this.initializeConnectors(stationInfo);
-    } else if (stationInfo?.Evses && !stationInfo?.Connectors) {
-      this.initializeEvses(stationInfo);
-    } else if (stationInfo?.Evses && stationInfo?.Connectors) {
+  private initializeConnectorsOrEvsesFromFile(configuration: ChargingStationConfiguration): void {
+    if (configuration?.connectorsStatus && !configuration?.evsesStatus) {
+      for (const [connectorId, connectorStatus] of configuration.connectorsStatus.entries()) {
+        this.connectors.set(connectorId, Utils.cloneObject<ConnectorStatus>(connectorStatus));
+      }
+    } else if (configuration?.evsesStatus && !configuration?.connectorsStatus) {
+      for (const [evseId, evseStatusConfiguration] of configuration.evsesStatus.entries()) {
+        const evseStatus = Utils.cloneObject<EvseStatusConfiguration>(evseStatusConfiguration);
+        delete evseStatus.connectorsStatus;
+        this.evses.set(evseId, {
+          ...(evseStatus as EvseStatus),
+          connectors: new Map<number, ConnectorStatus>(
+            evseStatusConfiguration.connectorsStatus.map((connectorStatus, connectorId) => [
+              connectorId,
+              connectorStatus,
+            ])
+          ),
+        });
+      }
+    } else if (configuration?.evsesStatus && configuration?.connectorsStatus) {
+      const errorMsg = `Connectors and evses defined at the same time in configuration file ${this.configurationFile}`;
+      logger.error(`${this.logPrefix()} ${errorMsg}`);
+      throw new BaseError(errorMsg);
+    } else {
+      const errorMsg = `No connectors or evses defined in configuration file ${this.configurationFile}`;
+      logger.error(`${this.logPrefix()} ${errorMsg}`);
+      throw new BaseError(errorMsg);
+    }
+  }
+
+  private initializeConnectorsOrEvsesFromTemplate(stationTemplate: ChargingStationTemplate) {
+    if (stationTemplate?.Connectors && !stationTemplate?.Evses) {
+      this.initializeConnectorsFromTemplate(stationTemplate);
+    } else if (stationTemplate?.Evses && !stationTemplate?.Connectors) {
+      this.initializeEvsesFromTemplate(stationTemplate);
+    } else if (stationTemplate?.Evses && stationTemplate?.Connectors) {
       const errorMsg = `Connectors and evses defined at the same time in template file ${this.templateFile}`;
       logger.error(`${this.logPrefix()} ${errorMsg}`);
       throw new BaseError(errorMsg);
@@ -1278,72 +1585,51 @@ export class ChargingStation {
     }
   }
 
-  private initializeConnectors(stationInfo: ChargingStationInfo): void {
-    if (!stationInfo?.Connectors && this.connectors.size === 0) {
-      const logMsg = `No already defined connectors and charging station information from template ${this.templateFile} with no connectors configuration defined`;
-      logger.error(`${this.logPrefix()} ${logMsg}`);
-      throw new BaseError(logMsg);
+  private initializeConnectorsFromTemplate(stationTemplate: ChargingStationTemplate): void {
+    if (!stationTemplate?.Connectors && this.connectors.size === 0) {
+      const errorMsg = `No already defined connectors and charging station information from template ${this.templateFile} with no connectors configuration defined`;
+      logger.error(`${this.logPrefix()} ${errorMsg}`);
+      throw new BaseError(errorMsg);
     }
-    if (!stationInfo?.Connectors[0]) {
+    if (!stationTemplate?.Connectors[0]) {
       logger.warn(
         `${this.logPrefix()} Charging station information from template ${
           this.templateFile
         } with no connector id 0 configuration`
       );
     }
-    if (stationInfo?.Connectors) {
-      const configuredMaxConnectors =
-        ChargingStationUtils.getConfiguredNumberOfConnectors(stationInfo);
-      ChargingStationUtils.checkConfiguredMaxConnectors(
-        configuredMaxConnectors,
-        this.templateFile,
-        this.logPrefix()
-      );
+    if (stationTemplate?.Connectors) {
+      const { configuredMaxConnectors, templateMaxConnectors, templateMaxAvailableConnectors } =
+        ChargingStationUtils.checkConnectorsConfiguration(
+          stationTemplate,
+          this.logPrefix(),
+          this.templateFile
+        );
       const connectorsConfigHash = crypto
         .createHash(Constants.DEFAULT_HASH_ALGORITHM)
-        .update(`${JSON.stringify(stationInfo?.Connectors)}${configuredMaxConnectors.toString()}`)
+        .update(
+          `${JSON.stringify(stationTemplate?.Connectors)}${configuredMaxConnectors.toString()}`
+        )
         .digest('hex');
       const connectorsConfigChanged =
         this.connectors?.size !== 0 && this.connectorsConfigurationHash !== connectorsConfigHash;
       if (this.connectors?.size === 0 || connectorsConfigChanged) {
         connectorsConfigChanged && this.connectors.clear();
         this.connectorsConfigurationHash = connectorsConfigHash;
-        const templateMaxConnectors = ChargingStationUtils.getMaxNumberOfConnectors(
-          stationInfo.Connectors
-        );
-        ChargingStationUtils.checkTemplateMaxConnectors(
-          templateMaxConnectors,
-          this.templateFile,
-          this.logPrefix()
-        );
-        const templateMaxAvailableConnectors = stationInfo?.Connectors[0]
-          ? templateMaxConnectors - 1
-          : templateMaxConnectors;
-        if (
-          configuredMaxConnectors > templateMaxAvailableConnectors &&
-          !stationInfo?.randomConnectors
-        ) {
-          logger.warn(
-            `${this.logPrefix()} Number of connectors exceeds the number of connector configurations in template ${
-              this.templateFile
-            }, forcing random connector configurations affectation`
-          );
-          stationInfo.randomConnectors = true;
-        }
         if (templateMaxConnectors > 0) {
           for (let connectorId = 0; connectorId <= configuredMaxConnectors; connectorId++) {
             if (
               connectorId === 0 &&
-              (!stationInfo?.Connectors[connectorId] ||
-                this.getUseConnectorId0(stationInfo) === false)
+              (!stationTemplate?.Connectors[connectorId] ||
+                this.getUseConnectorId0(stationTemplate) === false)
             ) {
               continue;
             }
             const templateConnectorId =
-              connectorId > 0 && stationInfo?.randomConnectors
+              connectorId > 0 && stationTemplate?.randomConnectors
                 ? Utils.getRandomInteger(templateMaxAvailableConnectors, 1)
                 : connectorId;
-            const connectorStatus = stationInfo?.Connectors[templateConnectorId];
+            const connectorStatus = stationTemplate?.Connectors[templateConnectorId];
             ChargingStationUtils.checkStationInfoConnectorStatus(
               templateConnectorId,
               connectorStatus,
@@ -1371,43 +1657,43 @@ export class ChargingStation {
     }
   }
 
-  private initializeEvses(stationInfo: ChargingStationInfo): void {
-    if (!stationInfo?.Evses && this.evses.size === 0) {
-      const logMsg = `No already defined evses and charging station information from template ${this.templateFile} with no evses configuration defined`;
-      logger.error(`${this.logPrefix()} ${logMsg}`);
-      throw new BaseError(logMsg);
+  private initializeEvsesFromTemplate(stationTemplate: ChargingStationTemplate): void {
+    if (!stationTemplate?.Evses && this.evses.size === 0) {
+      const errorMsg = `No already defined evses and charging station information from template ${this.templateFile} with no evses configuration defined`;
+      logger.error(`${this.logPrefix()} ${errorMsg}`);
+      throw new BaseError(errorMsg);
     }
-    if (!stationInfo?.Evses[0]) {
+    if (!stationTemplate?.Evses[0]) {
       logger.warn(
         `${this.logPrefix()} Charging station information from template ${
           this.templateFile
         } with no evse id 0 configuration`
       );
     }
-    if (!stationInfo?.Evses[0]?.Connectors[0]) {
+    if (!stationTemplate?.Evses[0]?.Connectors[0]) {
       logger.warn(
         `${this.logPrefix()} Charging station information from template ${
           this.templateFile
         } with evse id 0 with no connector id 0 configuration`
       );
     }
-    if (stationInfo?.Evses) {
+    if (stationTemplate?.Evses) {
       const evsesConfigHash = crypto
         .createHash(Constants.DEFAULT_HASH_ALGORITHM)
-        .update(`${JSON.stringify(stationInfo?.Evses)}`)
+        .update(JSON.stringify(stationTemplate?.Evses))
         .digest('hex');
       const evsesConfigChanged =
         this.evses?.size !== 0 && this.evsesConfigurationHash !== evsesConfigHash;
       if (this.evses?.size === 0 || evsesConfigChanged) {
         evsesConfigChanged && this.evses.clear();
         this.evsesConfigurationHash = evsesConfigHash;
-        const templateMaxEvses = ChargingStationUtils.getMaxNumberOfEvses(stationInfo?.Evses);
+        const templateMaxEvses = ChargingStationUtils.getMaxNumberOfEvses(stationTemplate?.Evses);
         if (templateMaxEvses > 0) {
-          for (const evse in stationInfo.Evses) {
+          for (const evse in stationTemplate.Evses) {
             const evseId = Utils.convertToInt(evse);
             this.evses.set(evseId, {
               connectors: ChargingStationUtils.buildConnectorsMap(
-                stationInfo?.Evses[evse]?.Connectors,
+                stationTemplate?.Evses[evse]?.Connectors,
                 this.logPrefix(),
                 this.templateFile
               ),
@@ -1438,7 +1724,7 @@ export class ChargingStation {
 
   private getConfigurationFromFile(): ChargingStationConfiguration | undefined {
     let configuration: ChargingStationConfiguration | undefined;
-    if (this.configurationFile && fs.existsSync(this.configurationFile)) {
+    if (Utils.isNotEmptyString(this.configurationFile) && fs.existsSync(this.configurationFile)) {
       try {
         if (this.sharedLRUCache.hasChargingStationConfiguration(this.configurationFileHash)) {
           configuration = this.sharedLRUCache.getChargingStationConfiguration(
@@ -1451,11 +1737,11 @@ export class ChargingStation {
             fs.readFileSync(this.configurationFile, 'utf8')
           ) as ChargingStationConfiguration;
           PerformanceStatistics.endMeasure(measureId, beginId);
-          this.configurationFileHash = configuration.configurationHash;
           this.sharedLRUCache.setChargingStationConfiguration(configuration);
+          this.configurationFileHash = configuration.configurationHash;
         }
       } catch (error) {
-        FileUtils.handleFileException(
+        handleFileException(
           this.configurationFile,
           FileType.ChargingStationConfiguration,
           error as NodeJS.ErrnoException,
@@ -1466,78 +1752,94 @@ export class ChargingStation {
     return configuration;
   }
 
-  private saveConnectorsStatus() {
-    if (this.getOcppPersistentConfiguration()) {
-      this.saveConfiguration({ stationInfo: false, ocppConfiguration: false, evses: false });
+  private saveAutomaticTransactionGeneratorConfiguration(): void {
+    if (this.getAutomaticTransactionGeneratorPersistentConfiguration()) {
+      this.saveConfiguration();
     }
   }
 
+  private saveConnectorsStatus() {
+    this.saveConfiguration();
+  }
+
   private saveEvsesStatus() {
-    if (this.getOcppPersistentConfiguration()) {
-      this.saveConfiguration({ stationInfo: false, ocppConfiguration: false, connectors: false });
-    }
+    this.saveConfiguration();
   }
 
-  private saveConfiguration(
-    params: {
-      stationInfo?: boolean;
-      ocppConfiguration?: boolean;
-      connectors?: boolean;
-      evses?: boolean;
-    } = { stationInfo: true, ocppConfiguration: true, connectors: true, evses: true }
-  ): void {
-    if (this.configurationFile) {
-      params = {
-        ...params,
-        ...{ stationInfo: true, ocppConfiguration: true, connectors: true, evses: true },
-      };
+  private saveConfiguration(): void {
+    if (Utils.isNotEmptyString(this.configurationFile)) {
       try {
         if (!fs.existsSync(path.dirname(this.configurationFile))) {
           fs.mkdirSync(path.dirname(this.configurationFile), { recursive: true });
         }
-        const configurationData: ChargingStationConfiguration =
-          Utils.cloneObject(this.getConfigurationFromFile()) ?? {};
-        if (params.stationInfo && this.stationInfo) {
+        let configurationData: ChargingStationConfiguration =
+          Utils.cloneObject<ChargingStationConfiguration>(this.getConfigurationFromFile()) ?? {};
+        if (this.getStationInfoPersistentConfiguration() && this.stationInfo) {
           configurationData.stationInfo = this.stationInfo;
+        } else {
+          delete configurationData.stationInfo;
         }
-        if (params.ocppConfiguration && this.ocppConfiguration?.configurationKey) {
+        if (this.getOcppPersistentConfiguration() && this.ocppConfiguration?.configurationKey) {
           configurationData.configurationKey = this.ocppConfiguration.configurationKey;
+        } else {
+          delete configurationData.configurationKey;
         }
-        if (params.connectors && this.connectors.size > 0) {
-          configurationData.connectorsStatus = [...this.connectors.values()].map(
-            // eslint-disable-next-line @typescript-eslint/no-unused-vars
-            ({ transactionSetInterval, ...connectorStatusRest }) => connectorStatusRest
-          );
+        configurationData = merge<ChargingStationConfiguration>(
+          configurationData,
+          buildChargingStationAutomaticTransactionGeneratorConfiguration(this)
+        );
+        if (
+          !this.getAutomaticTransactionGeneratorPersistentConfiguration() ||
+          !this.getAutomaticTransactionGeneratorConfiguration()
+        ) {
+          delete configurationData.automaticTransactionGenerator;
         }
-        if (params.evses && this.evses.size > 0) {
-          configurationData.evsesStatus = [...this.evses.values()].map((evseStatus) => {
-            const status = {
-              ...evseStatus,
-              connectorsStatus: [...evseStatus.connectors.values()].map(
-                // eslint-disable-next-line @typescript-eslint/no-unused-vars
-                ({ transactionSetInterval, ...connectorStatusRest }) => connectorStatusRest
-              ),
-            };
-            delete status.connectors;
-            return status as EvseStatusConfiguration;
-          });
+        if (this.connectors.size > 0) {
+          configurationData.connectorsStatus = buildConnectorsStatus(this);
+        } else {
+          delete configurationData.connectorsStatus;
+        }
+        if (this.evses.size > 0) {
+          configurationData.evsesStatus = buildEvsesStatus(this);
+        } else {
+          delete configurationData.evsesStatus;
         }
         delete configurationData.configurationHash;
         const configurationHash = crypto
           .createHash(Constants.DEFAULT_HASH_ALGORITHM)
-          .update(JSON.stringify(configurationData))
+          .update(
+            JSON.stringify({
+              stationInfo: configurationData.stationInfo,
+              configurationKey: configurationData.configurationKey,
+              automaticTransactionGenerator: configurationData.automaticTransactionGenerator,
+            } as ChargingStationConfiguration)
+          )
           .digest('hex');
         if (this.configurationFileHash !== configurationHash) {
-          configurationData.configurationHash = configurationHash;
-          const measureId = `${FileType.ChargingStationConfiguration} write`;
-          const beginId = PerformanceStatistics.beginMeasure(measureId);
-          const fileDescriptor = fs.openSync(this.configurationFile, 'w');
-          fs.writeFileSync(fileDescriptor, JSON.stringify(configurationData, null, 2), 'utf8');
-          fs.closeSync(fileDescriptor);
-          PerformanceStatistics.endMeasure(measureId, beginId);
-          this.sharedLRUCache.deleteChargingStationConfiguration(this.configurationFileHash);
-          this.configurationFileHash = configurationHash;
-          this.sharedLRUCache.setChargingStationConfiguration(configurationData);
+          AsyncLock.acquire(AsyncLockType.configuration)
+            .then(() => {
+              configurationData.configurationHash = configurationHash;
+              const measureId = `${FileType.ChargingStationConfiguration} write`;
+              const beginId = PerformanceStatistics.beginMeasure(measureId);
+              const fileDescriptor = fs.openSync(this.configurationFile, 'w');
+              fs.writeFileSync(fileDescriptor, JSON.stringify(configurationData, null, 2), 'utf8');
+              fs.closeSync(fileDescriptor);
+              PerformanceStatistics.endMeasure(measureId, beginId);
+              this.sharedLRUCache.deleteChargingStationConfiguration(this.configurationFileHash);
+              this.sharedLRUCache.setChargingStationConfiguration(configurationData);
+              this.configurationFileHash = configurationHash;
+            })
+            .catch((error) => {
+              handleFileException(
+                this.configurationFile,
+                FileType.ChargingStationConfiguration,
+                error as NodeJS.ErrnoException,
+                this.logPrefix()
+              );
+            })
+            .finally(() => {
+              AsyncLock.release(AsyncLockType.configuration).catch(Constants.EMPTY_FUNCTION);
+            });
         } else {
           logger.debug(
             `${this.logPrefix()} Not saving unchanged charging station configuration file ${
@@ -1546,7 +1848,7 @@ export class ChargingStation {
           );
         }
       } catch (error) {
-        FileUtils.handleFileException(
+        handleFileException(
           this.configurationFile,
           FileType.ChargingStationConfiguration,
           error as NodeJS.ErrnoException,
@@ -1565,16 +1867,11 @@ export class ChargingStation {
   }
 
   private getOcppConfigurationFromFile(): ChargingStationOcppConfiguration | undefined {
-    let configuration: ChargingStationConfiguration | undefined;
-    if (this.getOcppPersistentConfiguration() === true) {
-      const configurationFromFile = this.getConfigurationFromFile();
-      configuration = configurationFromFile?.configurationKey && configurationFromFile;
+    const configurationKey = this.getConfigurationFromFile()?.configurationKey;
+    if (this.getOcppPersistentConfiguration() === true && configurationKey) {
+      return { configurationKey };
     }
-    if (!Utils.isNullOrUndefined(configuration)) {
-      delete configuration.stationInfo;
-      delete configuration.configurationHash;
-    }
-    return configuration;
+    return undefined;
   }
 
   private getOcppConfiguration(): ChargingStationOcppConfiguration | undefined {
@@ -1602,11 +1899,11 @@ export class ChargingStation {
             skipBufferingOnError: true,
           });
           if (this.isRegistered() === false) {
-            this.getRegistrationMaxRetries() !== -1 && registrationRetryCount++;
+            this.getRegistrationMaxRetries() !== -1 && ++registrationRetryCount;
             await Utils.sleep(
               this?.bootNotificationResponse?.interval
                 ? this.bootNotificationResponse.interval * 1000
-                : Constants.OCPP_DEFAULT_BOOT_NOTIFICATION_INTERVAL
+                : Constants.DEFAULT_BOOT_NOTIFICATION_INTERVAL
             );
           }
         } while (
@@ -1616,7 +1913,7 @@ export class ChargingStation {
         );
       }
       if (this.isRegistered() === true) {
-        if (this.isInAcceptedState() === true) {
+        if (this.inAcceptedState() === true) {
           await this.startMessageSequence();
         }
       } else {
@@ -1626,7 +1923,7 @@ export class ChargingStation {
       }
       this.wsConnectionRestarted = false;
       this.autoReconnectRetryCount = 0;
-      parentPort?.postMessage(MessageChannelUtils.buildUpdatedMessage(this));
+      parentPort?.postMessage(buildUpdatedMessage(this));
     } else {
       logger.warn(
         `${this.logPrefix()} Connection to OCPP server through ${this.wsConnectionUrl.toString()} failed`
@@ -1656,7 +1953,7 @@ export class ChargingStation {
         this.started === true && (await this.reconnect());
         break;
     }
-    parentPort?.postMessage(MessageChannelUtils.buildUpdatedMessage(this));
+    parentPort?.postMessage(buildUpdatedMessage(this));
   }
 
   private getCachedRequest(messageType: MessageType, messageId: string): CachedRequest | undefined {
@@ -1740,7 +2037,7 @@ export class ChargingStation {
   private async onMessage(data: RawData): Promise<void> {
     let request: IncomingRequest | Response | ErrorResponse;
     let messageType: number;
-    let errMsg: string;
+    let errorMsg: string;
     try {
       request = JSON.parse(data.toString()) as IncomingRequest | Response | ErrorResponse;
       if (Array.isArray(request) === true) {
@@ -1762,11 +2059,11 @@ export class ChargingStation {
           // Unknown Message
           default:
             // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
-            errMsg = `Wrong message type ${messageType}`;
-            logger.error(`${this.logPrefix()} ${errMsg}`);
-            throw new OCPPError(ErrorType.PROTOCOL_ERROR, errMsg);
+            errorMsg = `Wrong message type ${messageType}`;
+            logger.error(`${this.logPrefix()} ${errorMsg}`);
+            throw new OCPPError(ErrorType.PROTOCOL_ERROR, errorMsg);
         }
-        parentPort?.postMessage(MessageChannelUtils.buildUpdatedMessage(this));
+        parentPort?.postMessage(buildUpdatedMessage(this));
       } else {
         throw new OCPPError(ErrorType.PROTOCOL_ERROR, 'Incoming message is not an array', null, {
           request,
@@ -1844,29 +2141,8 @@ export class ChargingStation {
     );
   }
 
-  private getUseConnectorId0(stationInfo?: ChargingStationInfo): boolean {
-    const localStationInfo = stationInfo ?? this.stationInfo;
-    return localStationInfo?.useConnectorId0 ?? true;
-  }
-
-  private getNumberOfRunningTransactions(): number {
-    let trxCount = 0;
-    if (this.hasEvses) {
-      for (const evseStatus of this.evses.values()) {
-        for (const connectorStatus of evseStatus.connectors.values()) {
-          if (connectorStatus.transactionStarted === true) {
-            trxCount++;
-          }
-        }
-      }
-    } else {
-      for (const connectorId of this.connectors.keys()) {
-        if (connectorId > 0 && this.getConnectorStatus(connectorId)?.transactionStarted === true) {
-          trxCount++;
-        }
-      }
-    }
-    return trxCount;
+  private getUseConnectorId0(stationTemplate?: ChargingStationTemplate): boolean {
+    return stationTemplate?.useConnectorId0 ?? true;
   }
 
   private async stopRunningTransactions(reason = StopTransactionReason.NONE): Promise<void> {
@@ -1909,25 +2185,18 @@ export class ChargingStation {
 
   // -1 for unlimited, 0 for disabling
   private getAutoReconnectMaxRetries(): number | undefined {
-    if (!Utils.isUndefined(this.stationInfo.autoReconnectMaxRetries)) {
-      return this.stationInfo.autoReconnectMaxRetries;
-    }
-    if (!Utils.isUndefined(Configuration.getAutoReconnectMaxRetries())) {
-      return Configuration.getAutoReconnectMaxRetries();
-    }
-    return -1;
+    return (
+      this.stationInfo.autoReconnectMaxRetries ?? Configuration.getAutoReconnectMaxRetries() ?? -1
+    );
   }
 
   // 0 for disabling
   private getRegistrationMaxRetries(): number | undefined {
-    if (!Utils.isUndefined(this.stationInfo.registrationMaxRetries)) {
-      return this.stationInfo.registrationMaxRetries;
-    }
-    return -1;
+    return this.stationInfo.registrationMaxRetries ?? -1;
   }
 
   private getPowerDivider(): number {
-    let powerDivider = this.getNumberOfConnectors();
+    let powerDivider = this.hasEvses ? this.getNumberOfEvses() : this.getNumberOfConnectors();
     if (this.stationInfo?.powerSharedByConnectors) {
       powerDivider = this.getNumberOfRunningTransactions();
     }
@@ -1940,7 +2209,7 @@ export class ChargingStation {
       case CurrentType.AC:
         return ACElectricUtils.amperagePerPhaseFromPower(
           this.getNumberOfPhases(stationInfo),
-          maximumPower / this.getNumberOfConnectors(),
+          maximumPower / (this.hasEvses ? this.getNumberOfEvses() : this.getNumberOfConnectors()),
           this.getVoltageOut(stationInfo)
         );
       case CurrentType.DC:
@@ -1983,30 +2252,33 @@ export class ChargingStation {
     // Initialize connectors status
     if (this.hasEvses) {
       for (const [evseId, evseStatus] of this.evses) {
-        if (evseId === 0) {
-          continue;
+        if (evseId > 0) {
+          for (const [connectorId, connectorStatus] of evseStatus.connectors) {
+            const connectorBootStatus = ChargingStationUtils.getBootConnectorStatus(
+              this,
+              connectorId,
+              connectorStatus
+            );
+            await OCPPServiceUtils.sendAndSetConnectorStatus(
+              this,
+              connectorId,
+              connectorBootStatus,
+              evseId
+            );
+          }
         }
-        for (const [connectorId, connectorStatus] of evseStatus.connectors) {
+      }
+    } else {
+      for (const connectorId of this.connectors.keys()) {
+        if (connectorId > 0) {
           const connectorBootStatus = ChargingStationUtils.getBootConnectorStatus(
             this,
             connectorId,
-            connectorStatus
+            this.getConnectorStatus(connectorId)
           );
           await OCPPServiceUtils.sendAndSetConnectorStatus(this, connectorId, connectorBootStatus);
         }
       }
-    } else {
-      for (const connectorId of this.connectors.keys()) {
-        if (connectorId === 0) {
-          continue;
-        }
-        const connectorBootStatus = ChargingStationUtils.getBootConnectorStatus(
-          this,
-          connectorId,
-          this.getConnectorStatus(connectorId)
-        );
-        await OCPPServiceUtils.sendAndSetConnectorStatus(this, connectorId, connectorBootStatus);
-      }
     }
     if (this.stationInfo?.firmwareStatus === FirmwareStatus.Installing) {
       await this.ocppRequestService.requestHandler<
@@ -2019,7 +2291,7 @@ export class ChargingStation {
     }
 
     // Start the ATG
-    if (this.getAutomaticTransactionGeneratorConfigurationFromTemplate()?.enable === true) {
+    if (this.getAutomaticTransactionGeneratorConfiguration()?.enable === true) {
       this.startAutomaticTransactionGenerator();
     }
     this.wsConnectionRestarted === true && this.flushMessageBuffer();
@@ -2051,7 +2323,8 @@ export class ChargingStation {
               OCPPServiceUtils.buildStatusNotificationRequest(
                 this,
                 connectorId,
-                ConnectorStatusEnum.Unavailable
+                ConnectorStatusEnum.Unavailable,
+                evseId
               )
             );
             delete connectorStatus?.status;
@@ -2123,6 +2396,7 @@ export class ChargingStation {
   }
 
   private getConfiguredSupervisionUrl(): URL {
+    let configuredSupervisionUrl: string;
     const supervisionUrls = this.stationInfo?.supervisionUrls ?? Configuration.getSupervisionUrls();
     if (Utils.isNotEmptyArray(supervisionUrls)) {
       let configuredSupervisionUrlIndex: number;
@@ -2144,9 +2418,16 @@ export class ChargingStation {
           configuredSupervisionUrlIndex = (this.index - 1) % supervisionUrls.length;
           break;
       }
-      return new URL(supervisionUrls[configuredSupervisionUrlIndex]);
+      configuredSupervisionUrl = supervisionUrls[configuredSupervisionUrlIndex];
+    } else {
+      configuredSupervisionUrl = supervisionUrls as string;
+    }
+    if (Utils.isNotEmptyString(configuredSupervisionUrl)) {
+      return new URL(configuredSupervisionUrl);
     }
-    return new URL(supervisionUrls as string);
+    const errorMsg = 'No supervision url(s) configured';
+    logger.error(`${this.logPrefix()} ${errorMsg}`);
+    throw new BaseError(`${errorMsg}`);
   }
 
   private stopHeartbeat(): void {
@@ -2173,14 +2454,14 @@ export class ChargingStation {
     // Stop heartbeat
     this.stopHeartbeat();
     // Stop the ATG if needed
-    if (this.automaticTransactionGenerator?.configuration?.stopOnConnectionFailure === true) {
+    if (this.getAutomaticTransactionGeneratorConfiguration().stopOnConnectionFailure === true) {
       this.stopAutomaticTransactionGenerator();
     }
     if (
       this.autoReconnectRetryCount < this.getAutoReconnectMaxRetries() ||
       this.getAutoReconnectMaxRetries() === -1
     ) {
-      this.autoReconnectRetryCount++;
+      ++this.autoReconnectRetryCount;
       const reconnectDelay = this.getReconnectExponentialDelay()
         ? Utils.exponentialDelay(this.autoReconnectRetryCount)
         : this.getConnectionTimeout() * 1000;
@@ -2215,10 +2496,4 @@ export class ChargingStation {
       );
     }
   }
-
-  private getAutomaticTransactionGeneratorConfigurationFromTemplate():
-    | AutomaticTransactionGeneratorConfiguration
-    | undefined {
-    return this.getTemplateFromFile()?.AutomaticTransactionGenerator;
-  }
 }