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
  13   protected chargingStation: ChargingStation;
  14
  15   protected constructor(chargingStation: ChargingStation) {
  16     this.chargingStation = chargingStation;
  17   }
  18
  19   public static getInstance<T extends OCPPIncomingRequestService>(
  20     this: new (chargingStation: ChargingStation) => T,
  21     chargingStation: ChargingStation
  22   ): T {
  23     if (!OCPPIncomingRequestService.instances.has(chargingStation.id)) {
  24       OCPPIncomingRequestService.instances.set(chargingStation.id, new this(chargingStation));
  25     }
  26     return OCPPIncomingRequestService.instances.get(chargingStation.id) as T;
  27   }
  28
  29   protected handleIncomingRequestError<T>(
  30     commandName: IncomingRequestCommand,
  31     error: Error,
  32     params: HandleErrorParams<T> = { throwError: true }
  33   ): T {
  34     logger.error(
  35       this.chargingStation.logPrefix() + ' Incoming request command %s error: %j',
  36       commandName,
  37       error
  38     );
  39     if (!params?.throwError && params?.errorResponse) {
  40       return params?.errorResponse;
  41     }
  42     if (params?.throwError && !params?.errorResponse) {
  43       throw error;
  44     }
  45     if (params?.throwError && params?.errorResponse) {
  46       return params?.errorResponse;
  47     }
  48   }
  49
  50   public abstract handleRequest(
  51     messageId: string,
  52     commandName: IncomingRequestCommand,
  53     commandPayload: JsonType
  54   ): Promise<void>;
  55 }