Ensure 1:1 mapping between charging station instance and its OCPP services

[e-mobility-charging-stations-simulator.git] / src / charging-station / ocpp / OCPPIncomingRequestService.ts

import type ChargingStation from '../ChargingStation';
import { IncomingRequestCommand } from '../../types/ocpp/Requests';
import { JsonType } from '../../types/JsonType';
import logger from '../../utils/Logger';

export default abstract class OCPPIncomingRequestService {
  private static readonly instances: Map<string, OCPPIncomingRequestService> = new Map<string, OCPPIncomingRequestService>();
  protected chargingStation: ChargingStation;

  protected constructor(chargingStation: ChargingStation) {
    this.chargingStation = chargingStation;
  }

  public static getInstance<T extends OCPPIncomingRequestService>(this: new (chargingStation: ChargingStation) => T, chargingStation: ChargingStation): T {
    if (!OCPPIncomingRequestService.instances.has(chargingStation.id)) {
      OCPPIncomingRequestService.instances.set(chargingStation.id, new this(chargingStation));
    }
    return OCPPIncomingRequestService.instances.get(chargingStation.id) as T;
  }

  protected handleIncomingRequestError<T>(commandName: IncomingRequestCommand, error: Error, errorOcppResponse?: T): T {
    logger.error(this.chargingStation.logPrefix() + ' Incoming request command %s error: %j', commandName, error);
    if (errorOcppResponse) {
      return errorOcppResponse;
    }
    throw error;
  }

  public abstract handleRequest(messageId: string, commandName: IncomingRequestCommand, commandPayload: JsonType): Promise<void>;
}