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<string, OCPPIncomingRequestService>();
   9   protected chargingStation: ChargingStation;
  10
  11   protected constructor(chargingStation: ChargingStation) {
  12     this.chargingStation = chargingStation;
  13   }
  14
  15   public static getInstance<T extends OCPPIncomingRequestService>(this: new (chargingStation: ChargingStation) => T, chargingStation: ChargingStation): T {
  16     if (!OCPPIncomingRequestService.instances.has(chargingStation.id)) {
  17       OCPPIncomingRequestService.instances.set(chargingStation.id, new this(chargingStation));
  18     }
  19     return OCPPIncomingRequestService.instances.get(chargingStation.id) as T;
  20   }
  21
  22   protected handleIncomingRequestError<T>(commandName: IncomingRequestCommand, error: Error, errorOcppResponse?: T, params: HandleErrorParams = { throwError: true }): T {
  23     logger.error(this.chargingStation.logPrefix() + ' Incoming request command %s error: %j', commandName, error);
  24     if (errorOcppResponse) {
  25       return errorOcppResponse;
  26     }
  27     if (params?.throwError) {
  28       throw error;
  29     }
  30   }
  31
  32   public abstract handleRequest(messageId: string, commandName: IncomingRequestCommand, commandPayload: JsonType): Promise<void>;
  33 }