+ private static instance: OCPPIncomingRequestService | null = null;
+ private ajv: Ajv;
+
+ protected constructor() {
+ this.ajv = new Ajv();
+ ajvFormats(this.ajv);
+ this.incomingRequestHandler.bind(this);
+ this.validateIncomingRequestPayload.bind(this);
+ }
+
+ public static getInstance<T extends OCPPIncomingRequestService>(this: new () => T): T {
+ if (OCPPIncomingRequestService.instance === null) {
+ OCPPIncomingRequestService.instance = new this();
+ }
+ return OCPPIncomingRequestService.instance as T;
+ }
+
+ protected handleIncomingRequestError<T>(
+ chargingStation: ChargingStation,
+ commandName: IncomingRequestCommand,
+ error: Error,
+ params: HandleErrorParams<T> = { throwError: true }
+ ): T {
+ logger.error(
+ `${chargingStation.logPrefix()} ${moduleName}.handleIncomingRequestError: Incoming request command '${commandName}' error:`,
+ error
+ );
+ if (!params?.throwError && params?.errorResponse) {
+ return params?.errorResponse;
+ }
+ if (params?.throwError && !params?.errorResponse) {
+ throw error;
+ }
+ if (params?.throwError && params?.errorResponse) {
+ return params?.errorResponse;
+ }
+ }