X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fcharging-station%2FAutomaticTransactionGenerator.ts;h=d552d8a50b3aed420a68f2d8bdd837b65be9c11c;hb=3423c8a57047b3da28558538712aca35611c8214;hp=32d9d2e3ec9224dfc0bc2520e8a48c989313dca3;hpb=29bf6658d0689f5df26575d3b171163fe1d52d04;p=e-mobility-charging-stations-simulator.git

diff --git a/src/charging-station/AutomaticTransactionGenerator.ts b/src/charging-station/AutomaticTransactionGenerator.ts
index 32d9d2e3..f0d20739 100644
--- a/src/charging-station/AutomaticTransactionGenerator.ts
+++ b/src/charging-station/AutomaticTransactionGenerator.ts
@@ -1,131 +1,537 @@
-import { AuthorizationStatus, StartTransactionResponse, StopTransactionReason, StopTransactionResponse } from '../types/ocpp/1.6/Transaction';
-import { PerformanceObserver, performance } from 'perf_hooks';
+// Partial Copyright Jerome Benoit. 2021-2024. All Rights Reserved.
 
-import ChargingStation from './ChargingStation';
-import Constants from '../utils/Constants';
-import Utils from '../utils/Utils';
-import logger from '../utils/Logger';
+import { hoursToMilliseconds, secondsToMilliseconds } from 'date-fns'
 
-export default class AutomaticTransactionGenerator {
-  private _chargingStation: ChargingStation;
-  private _timeToStop: boolean;
-  private _performanceObserver: PerformanceObserver;
+import type { ChargingStation } from './ChargingStation.js'
+import { checkChargingStation } from './Helpers.js'
+import { IdTagsCache } from './IdTagsCache.js'
+import { isIdTagAuthorized } from './ocpp/index.js'
+import { BaseError } from '../exception/index.js'
+import { PerformanceStatistics } from '../performance/index.js'
+import {
+  AuthorizationStatus,
+  RequestCommand,
+  type StartTransactionRequest,
+  type StartTransactionResponse,
+  type Status,
+  StopTransactionReason,
+  type StopTransactionResponse
+} from '../types/index.js'
+import {
+  Constants,
+  clone,
+  convertToDate,
+  formatDurationMilliSeconds,
+  getRandomInteger,
+  isValidDate,
+  logPrefix,
+  logger,
+  secureRandom,
+  sleep
+} from '../utils/index.js'
 
-  constructor(chargingStation: ChargingStation) {
-    this._chargingStation = chargingStation;
-    this._timeToStop = true;
-    if (this._chargingStation.getEnableStatistics()) {
-      this._performanceObserver = new PerformanceObserver((list) => {
-        const entry = list.getEntries()[0];
-        this._chargingStation.statistics.logPerformance(entry, Constants.ENTITY_AUTOMATIC_TRANSACTION_GENERATOR);
-        this._performanceObserver.disconnect();
-      });
+export class AutomaticTransactionGenerator {
+  private static readonly instances: Map<string, AutomaticTransactionGenerator> = new Map<
+  string,
+  AutomaticTransactionGenerator
+  >()
+
+  public readonly connectorsStatus: Map<number, Status>
+  public started: boolean
+  private starting: boolean
+  private stopping: boolean
+  private readonly chargingStation: ChargingStation
+
+  private constructor (chargingStation: ChargingStation) {
+    this.started = false
+    this.starting = false
+    this.stopping = false
+    this.chargingStation = chargingStation
+    this.connectorsStatus = new Map<number, Status>()
+    this.initializeConnectorsStatus()
+  }
+
+  public static getInstance (
+    chargingStation: ChargingStation
+  ): AutomaticTransactionGenerator | undefined {
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    if (!AutomaticTransactionGenerator.instances.has(chargingStation.stationInfo!.hashId)) {
+      AutomaticTransactionGenerator.instances.set(
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        chargingStation.stationInfo!.hashId,
+        new AutomaticTransactionGenerator(chargingStation)
+      )
+    }
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    return AutomaticTransactionGenerator.instances.get(chargingStation.stationInfo!.hashId)
+  }
+
+  public start (): void {
+    if (!checkChargingStation(this.chargingStation, this.logPrefix())) {
+      return
+    }
+    if (this.started) {
+      logger.warn(`${this.logPrefix()} is already started`)
+      return
+    }
+    if (this.starting) {
+      logger.warn(`${this.logPrefix()} is already starting`)
+      return
     }
+    this.starting = true
+    this.startConnectors()
+    this.started = true
+    this.starting = false
   }
 
-  get timeToStop(): boolean {
-    return this._timeToStop;
+  public stop (): void {
+    if (!this.started) {
+      logger.warn(`${this.logPrefix()} is already stopped`)
+      return
+    }
+    if (this.stopping) {
+      logger.warn(`${this.logPrefix()} is already stopping`)
+      return
+    }
+    this.stopping = true
+    this.stopConnectors()
+    this.started = false
+    this.stopping = false
   }
 
-  _logPrefix(connectorId: number = null): string {
-    if (connectorId) {
-      return Utils.logPrefix(' ' + this._chargingStation.stationInfo.name + ' ATG on connector #' + connectorId.toString() + ':');
+  public startConnector (connectorId: number): void {
+    if (!checkChargingStation(this.chargingStation, this.logPrefix(connectorId))) {
+      return
+    }
+    if (!this.connectorsStatus.has(connectorId)) {
+      logger.error(`${this.logPrefix(connectorId)} starting on non existing connector`)
+      throw new BaseError(`Connector ${connectorId} does not exist`)
+    }
+    if (this.connectorsStatus.get(connectorId)?.start === false) {
+      this.internalStartConnector(connectorId).catch(Constants.EMPTY_FUNCTION)
+    } else if (this.connectorsStatus.get(connectorId)?.start === true) {
+      logger.warn(`${this.logPrefix(connectorId)} is already started on connector`)
     }
-    return Utils.logPrefix(' ' + this._chargingStation.stationInfo.name + ' ATG:');
   }
 
-  start(): void {
-    this._timeToStop = false;
-    if (this._chargingStation.stationInfo.AutomaticTransactionGenerator.stopAfterHours &&
-      this._chargingStation.stationInfo.AutomaticTransactionGenerator.stopAfterHours > 0) {
-      setTimeout(() => {
-        this.stop();
-      }, this._chargingStation.stationInfo.AutomaticTransactionGenerator.stopAfterHours * 3600 * 1000);
+  public stopConnector (connectorId: number): void {
+    if (!this.connectorsStatus.has(connectorId)) {
+      logger.error(`${this.logPrefix(connectorId)} stopping on non existing connector`)
+      throw new BaseError(`Connector ${connectorId} does not exist`)
+    }
+    if (this.connectorsStatus.get(connectorId)?.start === true) {
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      this.connectorsStatus.get(connectorId)!.start = false
+    } else if (this.connectorsStatus.get(connectorId)?.start === false) {
+      logger.warn(`${this.logPrefix(connectorId)} is already stopped on connector`)
     }
-    for (const connector in this._chargingStation.connectors) {
-      if (Utils.convertToInt(connector) > 0) {
-        this.startConnector(Utils.convertToInt(connector));
+  }
+
+  private startConnectors (): void {
+    if (
+      this.connectorsStatus.size > 0 &&
+      this.connectorsStatus.size !== this.chargingStation.getNumberOfConnectors()
+    ) {
+      this.connectorsStatus.clear()
+      this.initializeConnectorsStatus()
+    }
+    if (this.chargingStation.hasEvses) {
+      for (const [evseId, evseStatus] of this.chargingStation.evses) {
+        if (evseId > 0) {
+          for (const connectorId of evseStatus.connectors.keys()) {
+            this.startConnector(connectorId)
+          }
+        }
+      }
+    } else {
+      for (const connectorId of this.chargingStation.connectors.keys()) {
+        if (connectorId > 0) {
+          this.startConnector(connectorId)
+        }
       }
     }
-    logger.info(this._logPrefix() + ' ATG started and will stop in ' + Utils.secondsToHHMMSS(this._chargingStation.stationInfo.AutomaticTransactionGenerator.stopAfterHours * 3600));
   }
 
-  async stop(reason: StopTransactionReason = StopTransactionReason.NONE): Promise<void> {
-    logger.info(this._logPrefix() + ' ATG OVER => STOPPING ALL TRANSACTIONS');
-    for (const connector in this._chargingStation.connectors) {
-      if (this._chargingStation.getConnector(Utils.convertToInt(connector)).transactionStarted) {
-        logger.info(this._logPrefix(Utils.convertToInt(connector)) + ' ATG OVER. Stop transaction ' + this._chargingStation.getConnector(Utils.convertToInt(connector)).transactionId.toString());
-        await this._chargingStation.sendStopTransaction(this._chargingStation.getConnector(Utils.convertToInt(connector)).transactionId, reason);
+  private stopConnectors (): void {
+    if (this.chargingStation.hasEvses) {
+      for (const [evseId, evseStatus] of this.chargingStation.evses) {
+        if (evseId > 0) {
+          for (const connectorId of evseStatus.connectors.keys()) {
+            this.stopConnector(connectorId)
+          }
+        }
+      }
+    } else {
+      for (const connectorId of this.chargingStation.connectors.keys()) {
+        if (connectorId > 0) {
+          this.stopConnector(connectorId)
+        }
       }
     }
-    this._timeToStop = true;
   }
 
-  async startConnector(connectorId: number): Promise<void> {
-    do {
-      const wait = Utils.getRandomInt(this._chargingStation.stationInfo.AutomaticTransactionGenerator.maxDelayBetweenTwoTransactions,
-        this._chargingStation.stationInfo.AutomaticTransactionGenerator.minDelayBetweenTwoTransactions) * 1000;
-      logger.info(this._logPrefix(connectorId) + ' wait for ' + Utils.milliSecondsToHHMMSS(wait));
-      await Utils.sleep(wait);
-      if (this._timeToStop) {
-        logger.debug(this._logPrefix(connectorId) + ' Entered in transaction loop while a request to stop it was made');
-        break;
+  private async internalStartConnector (connectorId: number): Promise<void> {
+    this.setStartConnectorStatus(connectorId)
+    logger.info(
+      `${this.logPrefix(
+        connectorId
+      )} started on connector and will run for ${formatDurationMilliSeconds(
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        this.connectorsStatus.get(connectorId)!.stopDate!.getTime() -
+          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+          this.connectorsStatus.get(connectorId)!.startDate!.getTime()
+      )}`
+    )
+    while (this.connectorsStatus.get(connectorId)?.start === true) {
+      await this.waitChargingStationAvailable(connectorId)
+      await this.waitConnectorAvailable(connectorId)
+      if (!this.canStartConnector(connectorId)) {
+        this.stopConnector(connectorId)
+        break
       }
-      const start = Math.random();
-      let skip = 0;
-      if (start < this._chargingStation.stationInfo.AutomaticTransactionGenerator.probabilityOfStart) {
-        skip = 0;
+      const wait = secondsToMilliseconds(
+        getRandomInteger(
+          this.chargingStation.getAutomaticTransactionGeneratorConfiguration()
+            ?.maxDelayBetweenTwoTransactions,
+          this.chargingStation.getAutomaticTransactionGeneratorConfiguration()
+            ?.minDelayBetweenTwoTransactions
+        )
+      )
+      logger.info(`${this.logPrefix(connectorId)} waiting for ${formatDurationMilliSeconds(wait)}`)
+      await sleep(wait)
+      const start = secureRandom()
+      if (
+        start <
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        this.chargingStation.getAutomaticTransactionGeneratorConfiguration()!.probabilityOfStart
+      ) {
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        this.connectorsStatus.get(connectorId)!.skippedConsecutiveTransactions = 0
         // Start transaction
-        let startResponse: StartTransactionResponse;
-        if (this._chargingStation.getEnableStatistics()) {
-          const startTransaction = performance.timerify(this.startTransaction);
-          this._performanceObserver.observe({ entryTypes: ['function'] });
-          startResponse = await startTransaction(connectorId, this);
-        } else {
-          startResponse = await this.startTransaction(connectorId, this);
-        }
-        if (startResponse.idTagInfo?.status !== AuthorizationStatus.ACCEPTED) {
-          logger.info(this._logPrefix(connectorId) + ' transaction rejected');
-          await Utils.sleep(Constants.CHARGING_STATION_ATG_WAIT_TIME);
-        } else {
+        const startResponse = await this.startTransaction(connectorId)
+        if (startResponse?.idTagInfo.status === AuthorizationStatus.ACCEPTED) {
           // Wait until end of transaction
-          const waitTrxEnd = Utils.getRandomInt(this._chargingStation.stationInfo.AutomaticTransactionGenerator.maxDuration,
-            this._chargingStation.stationInfo.AutomaticTransactionGenerator.minDuration) * 1000;
-          logger.info(this._logPrefix(connectorId) + ' transaction ' + this._chargingStation.getConnector(connectorId).transactionId.toString() + ' will stop in ' + Utils.milliSecondsToHHMMSS(waitTrxEnd));
-          await Utils.sleep(waitTrxEnd);
-          // Stop transaction
-          if (this._chargingStation.getConnector(connectorId).transactionStarted) {
-            logger.info(this._logPrefix(connectorId) + ' stop transaction ' + this._chargingStation.getConnector(connectorId).transactionId.toString());
-            if (this._chargingStation.getEnableStatistics()) {
-              const stopTransaction = performance.timerify(this.stopTransaction);
-              this._performanceObserver.observe({ entryTypes: ['function'] });
-              await stopTransaction(connectorId, this);
-            } else {
-              await this.stopTransaction(connectorId, this);
-            }
-          }
+          const waitTrxEnd = secondsToMilliseconds(
+            getRandomInteger(
+              this.chargingStation.getAutomaticTransactionGeneratorConfiguration()?.maxDuration,
+              this.chargingStation.getAutomaticTransactionGeneratorConfiguration()?.minDuration
+            )
+          )
+          logger.info(
+            `${this.logPrefix(connectorId)} transaction started with id ${
+              this.chargingStation.getConnectorStatus(connectorId)?.transactionId
+            } and will stop in ${formatDurationMilliSeconds(waitTrxEnd)}`
+          )
+          await sleep(waitTrxEnd)
+          await this.stopTransaction(connectorId)
         }
       } else {
-        skip++;
-        logger.info(this._logPrefix(connectorId) + ' transaction skipped ' + skip.toString());
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        ++this.connectorsStatus.get(connectorId)!.skippedConsecutiveTransactions
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        ++this.connectorsStatus.get(connectorId)!.skippedTransactions
+        logger.info(
+          `${this.logPrefix(connectorId)} skipped consecutively ${
+            this.connectorsStatus.get(connectorId)?.skippedConsecutiveTransactions
+          }/${this.connectorsStatus.get(connectorId)?.skippedTransactions} transaction(s)`
+        )
+      }
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      this.connectorsStatus.get(connectorId)!.lastRunDate = new Date()
+    }
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    this.connectorsStatus.get(connectorId)!.stoppedDate = new Date()
+    logger.info(
+      `${this.logPrefix(
+        connectorId
+      )} stopped on connector and lasted for ${formatDurationMilliSeconds(
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        this.connectorsStatus.get(connectorId)!.stoppedDate!.getTime() -
+          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+          this.connectorsStatus.get(connectorId)!.startDate!.getTime()
+      )}`
+    )
+    logger.debug(
+      `${this.logPrefix(connectorId)} connector status: %j`,
+      this.connectorsStatus.get(connectorId)
+    )
+  }
+
+  private setStartConnectorStatus (connectorId: number): void {
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    this.connectorsStatus.get(connectorId)!.startDate = new Date()
+    if (
+      this.chargingStation.getAutomaticTransactionGeneratorConfiguration()?.stopAbsoluteDuration ===
+        false ||
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      !isValidDate(this.connectorsStatus.get(connectorId)!.stopDate)
+    ) {
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      this.connectorsStatus.get(connectorId)!.stopDate = new Date(
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        this.connectorsStatus.get(connectorId)!.startDate!.getTime() +
+          hoursToMilliseconds(
+            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+            this.chargingStation.getAutomaticTransactionGeneratorConfiguration()!.stopAfterHours
+          )
+      )
+    }
+    delete this.connectorsStatus.get(connectorId)?.stoppedDate
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    this.connectorsStatus.get(connectorId)!.skippedConsecutiveTransactions = 0
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    this.connectorsStatus.get(connectorId)!.start = true
+  }
+
+  private canStartConnector (connectorId: number): boolean {
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    if (new Date() > this.connectorsStatus.get(connectorId)!.stopDate!) {
+      logger.info(
+        `${this.logPrefix(
+          connectorId
+        )} entered in transaction loop while the ATG stop date has been reached`
+      )
+      return false
+    }
+    if (!this.chargingStation.inAcceptedState()) {
+      logger.error(
+        `${this.logPrefix(
+          connectorId
+        )} entered in transaction loop while the charging station is not in accepted state`
+      )
+      return false
+    }
+    if (!this.chargingStation.isChargingStationAvailable()) {
+      logger.info(
+        `${this.logPrefix(
+          connectorId
+        )} entered in transaction loop while the charging station is unavailable`
+      )
+      return false
+    }
+    if (!this.chargingStation.isConnectorAvailable(connectorId)) {
+      logger.info(
+        `${this.logPrefix(
+          connectorId
+        )} entered in transaction loop while the connector ${connectorId} is unavailable`
+      )
+      return false
+    }
+    return true
+  }
+
+  private async waitChargingStationAvailable (connectorId: number): Promise<void> {
+    let logged = false
+    while (!this.chargingStation.isChargingStationAvailable()) {
+      if (!logged) {
+        logger.info(
+          `${this.logPrefix(
+            connectorId
+          )} transaction loop waiting for charging station to be available`
+        )
+        logged = true
+      }
+      await sleep(Constants.CHARGING_STATION_ATG_AVAILABILITY_TIME)
+    }
+  }
+
+  private async waitConnectorAvailable (connectorId: number): Promise<void> {
+    let logged = false
+    while (!this.chargingStation.isConnectorAvailable(connectorId)) {
+      if (!logged) {
+        logger.info(
+          `${this.logPrefix(
+            connectorId
+          )} transaction loop waiting for connector ${connectorId} to be available`
+        )
+        logged = true
       }
-    } while (!this._timeToStop);
-    logger.info(this._logPrefix(connectorId) + ' ATG STOPPED on the connector');
+      await sleep(Constants.CHARGING_STATION_ATG_AVAILABILITY_TIME)
+    }
   }
 
-  // eslint-disable-next-line consistent-this
-  async startTransaction(connectorId: number, self: AutomaticTransactionGenerator): Promise<StartTransactionResponse> {
-    if (self._chargingStation.hasAuthorizedTags()) {
-      const tagId = self._chargingStation.getRandomTagId();
-      logger.info(self._logPrefix(connectorId) + ' start transaction for tagID ' + tagId);
-      return await self._chargingStation.sendStartTransaction(connectorId, tagId);
+  private initializeConnectorsStatus (): void {
+    if (this.chargingStation.hasEvses) {
+      for (const [evseId, evseStatus] of this.chargingStation.evses) {
+        if (evseId > 0) {
+          for (const connectorId of evseStatus.connectors.keys()) {
+            this.connectorsStatus.set(connectorId, this.getConnectorStatus(connectorId))
+          }
+        }
+      }
+    } else {
+      for (const connectorId of this.chargingStation.connectors.keys()) {
+        if (connectorId > 0) {
+          this.connectorsStatus.set(connectorId, this.getConnectorStatus(connectorId))
+        }
+      }
     }
-    logger.info(self._logPrefix(connectorId) + ' start transaction without a tagID');
-    return await self._chargingStation.sendStartTransaction(connectorId);
   }
 
-  // eslint-disable-next-line consistent-this
-  async stopTransaction(connectorId: number, self: AutomaticTransactionGenerator): Promise<StopTransactionResponse> {
-    return await self._chargingStation.sendStopTransaction(self._chargingStation.getConnector(connectorId).transactionId);
+  private getConnectorStatus (connectorId: number): Status {
+    const connectorStatus =
+      this.chargingStation.getAutomaticTransactionGeneratorStatuses()?.[connectorId - 1] != null
+        ? clone<Status>(
+          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+          this.chargingStation.getAutomaticTransactionGeneratorStatuses()![connectorId - 1]
+        )
+        : undefined
+    if (connectorStatus != null) {
+      connectorStatus.startDate = convertToDate(connectorStatus.startDate)
+      connectorStatus.lastRunDate = convertToDate(connectorStatus.lastRunDate)
+      connectorStatus.stopDate = convertToDate(connectorStatus.stopDate)
+      connectorStatus.stoppedDate = convertToDate(connectorStatus.stoppedDate)
+      if (
+        !this.started &&
+        (connectorStatus.start ||
+          this.chargingStation.getAutomaticTransactionGeneratorConfiguration()?.enable !== true)
+      ) {
+        connectorStatus.start = false
+      }
+    }
+    return (
+      connectorStatus ?? {
+        start: false,
+        authorizeRequests: 0,
+        acceptedAuthorizeRequests: 0,
+        rejectedAuthorizeRequests: 0,
+        startTransactionRequests: 0,
+        acceptedStartTransactionRequests: 0,
+        rejectedStartTransactionRequests: 0,
+        stopTransactionRequests: 0,
+        acceptedStopTransactionRequests: 0,
+        rejectedStopTransactionRequests: 0,
+        skippedConsecutiveTransactions: 0,
+        skippedTransactions: 0
+      }
+    )
+  }
+
+  private async startTransaction (
+    connectorId: number
+  ): Promise<StartTransactionResponse | undefined> {
+    const measureId = 'StartTransaction with ATG'
+    const beginId = PerformanceStatistics.beginMeasure(measureId)
+    let startResponse: StartTransactionResponse | undefined
+    if (this.chargingStation.hasIdTags()) {
+      const idTag = IdTagsCache.getInstance().getIdTag(
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        this.chargingStation.getAutomaticTransactionGeneratorConfiguration()!.idTagDistribution!,
+        this.chargingStation,
+        connectorId
+      )
+      const startTransactionLogMsg = `${this.logPrefix(
+        connectorId
+      )} start transaction with an idTag '${idTag}'`
+      if (this.getRequireAuthorize()) {
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        ++this.connectorsStatus.get(connectorId)!.authorizeRequests
+        if (await isIdTagAuthorized(this.chargingStation, connectorId, idTag)) {
+          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+          ++this.connectorsStatus.get(connectorId)!.acceptedAuthorizeRequests
+          logger.info(startTransactionLogMsg)
+          // Start transaction
+          startResponse = await this.chargingStation.ocppRequestService.requestHandler<
+          StartTransactionRequest,
+          StartTransactionResponse
+          >(this.chargingStation, RequestCommand.START_TRANSACTION, {
+            connectorId,
+            idTag
+          })
+          this.handleStartTransactionResponse(connectorId, startResponse)
+          PerformanceStatistics.endMeasure(measureId, beginId)
+          return startResponse
+        }
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        ++this.connectorsStatus.get(connectorId)!.rejectedAuthorizeRequests
+        PerformanceStatistics.endMeasure(measureId, beginId)
+        return startResponse
+      }
+      logger.info(startTransactionLogMsg)
+      // Start transaction
+      startResponse = await this.chargingStation.ocppRequestService.requestHandler<
+      StartTransactionRequest,
+      StartTransactionResponse
+      >(this.chargingStation, RequestCommand.START_TRANSACTION, {
+        connectorId,
+        idTag
+      })
+      this.handleStartTransactionResponse(connectorId, startResponse)
+      PerformanceStatistics.endMeasure(measureId, beginId)
+      return startResponse
+    }
+    logger.info(`${this.logPrefix(connectorId)} start transaction without an idTag`)
+    startResponse = await this.chargingStation.ocppRequestService.requestHandler<
+    StartTransactionRequest,
+    StartTransactionResponse
+    >(this.chargingStation, RequestCommand.START_TRANSACTION, { connectorId })
+    this.handleStartTransactionResponse(connectorId, startResponse)
+    PerformanceStatistics.endMeasure(measureId, beginId)
+    return startResponse
+  }
+
+  private async stopTransaction (
+    connectorId: number,
+    reason = StopTransactionReason.LOCAL
+  ): Promise<StopTransactionResponse | undefined> {
+    const measureId = 'StopTransaction with ATG'
+    const beginId = PerformanceStatistics.beginMeasure(measureId)
+    let stopResponse: StopTransactionResponse | undefined
+    if (this.chargingStation.getConnectorStatus(connectorId)?.transactionStarted === true) {
+      logger.info(
+        `${this.logPrefix(connectorId)} stop transaction with id ${
+          this.chargingStation.getConnectorStatus(connectorId)?.transactionId
+        }`
+      )
+      stopResponse = await this.chargingStation.stopTransactionOnConnector(connectorId, reason)
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      ++this.connectorsStatus.get(connectorId)!.stopTransactionRequests
+      if (stopResponse.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        ++this.connectorsStatus.get(connectorId)!.acceptedStopTransactionRequests
+      } else {
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+        ++this.connectorsStatus.get(connectorId)!.rejectedStopTransactionRequests
+      }
+    } else {
+      const transactionId = this.chargingStation.getConnectorStatus(connectorId)?.transactionId
+      logger.debug(
+        `${this.logPrefix(connectorId)} stopping a not started transaction${
+          transactionId != null ? ` with id ${transactionId}` : ''
+        }`
+      )
+    }
+    PerformanceStatistics.endMeasure(measureId, beginId)
+    return stopResponse
+  }
+
+  private getRequireAuthorize (): boolean {
+    return (
+      this.chargingStation.getAutomaticTransactionGeneratorConfiguration()?.requireAuthorize ?? true
+    )
+  }
+
+  private readonly logPrefix = (connectorId?: number): string => {
+    return logPrefix(
+      ` ${this.chargingStation.stationInfo?.chargingStationId} | ATG${
+        connectorId != null ? ` on connector #${connectorId}` : ''
+      }:`
+    )
+  }
+
+  private handleStartTransactionResponse (
+    connectorId: number,
+    startResponse: StartTransactionResponse
+  ): void {
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    ++this.connectorsStatus.get(connectorId)!.startTransactionRequests
+    if (startResponse.idTagInfo.status === AuthorizationStatus.ACCEPTED) {
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      ++this.connectorsStatus.get(connectorId)!.acceptedStartTransactionRequests
+    } else {
+      logger.warn(`${this.logPrefix(connectorId)} start transaction rejected`)
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      ++this.connectorsStatus.get(connectorId)!.rejectedStartTransactionRequests
+    }
   }
 }