src/charging-station/ocpp/OCPPIncomingRequestService.ts

   1 import type ChargingStation from '../ChargingStation';
   2 import { HandleErrorParams } from '../../types/Error';
   3 import { IncomingRequestCommand } from '../../types/ocpp/Requests';
   4 import { JsonType } from '../../types/JsonType';
   5 import logger from '../../utils/Logger';
   6
   7 export default abstract class OCPPIncomingRequestService {
   8   private static readonly instances: Map<string, OCPPIncomingRequestService> = new Map<
   9     string,
  10     OCPPIncomingRequestService
  11   >();
  12   protected chargingStation: ChargingStation;
  13
  14   protected constructor(chargingStation: ChargingStation) {
  15     this.chargingStation = chargingStation;
  16   }
  17
  18   public static getInstance<T extends OCPPIncomingRequestService>(
  19     this: new (chargingStation: ChargingStation) => T,
  20     chargingStation: ChargingStation
  21   ): T {
  22     if (!OCPPIncomingRequestService.instances.has(chargingStation.id)) {
  23       OCPPIncomingRequestService.instances.set(chargingStation.id, new this(chargingStation));
  24     }
  25     return OCPPIncomingRequestService.instances.get(chargingStation.id) as T;
  26   }
  27
  28   protected handleIncomingRequestError<T>(
  29     commandName: IncomingRequestCommand,
  30     error: Error,
  31     params: HandleErrorParams<T> = { throwError: true }
  32   ): T {
  33     logger.error(
  34       this.chargingStation.logPrefix() + ' Incoming request command %s error: %j',
  35       commandName,
  36       error
  37     );
  38     if (!params?.throwError && params?.errorResponse) {
  39       return params?.errorResponse;
  40     }
  41     if (params?.throwError && !params?.errorResponse) {
  42       throw error;
  43     }
  44     if (params?.throwError && params?.errorResponse) {
  45       return params?.errorResponse;
  46     }
  47   }
  48
  49   public abstract handleRequest(
  50     messageId: string,
  51     commandName: IncomingRequestCommand,
  52     commandPayload: JsonType
  53   ): Promise<void>;
  54 }