-import { HandleErrorParams } from '../../types/Error';
-import { JsonType } from '../../types/JsonType';
-import { IncomingRequestCommand } from '../../types/ocpp/Requests';
+import { AsyncResource } from 'async_hooks';
+
+import Ajv, { type JSONSchemaType } from 'ajv';
+import ajvFormats from 'ajv-formats';
+
+import OCPPConstants from './OCPPConstants';
+import { OCPPServiceUtils } from './OCPPServiceUtils';
+import OCPPError from '../../exception/OCPPError';
+import type { HandleErrorParams } from '../../types/Error';
+import type { JsonObject, JsonType } from '../../types/JsonType';
+import type { OCPPVersion } from '../../types/ocpp/OCPPVersion';
+import type { IncomingRequestCommand } from '../../types/ocpp/Requests';
+import type { ClearCacheResponse } from '../../types/ocpp/Responses';
import logger from '../../utils/Logger';
import type ChargingStation from '../ChargingStation';
+import { ChargingStationUtils } from '../ChargingStationUtils';
+
+const moduleName = 'OCPPIncomingRequestService';
export default abstract class OCPPIncomingRequestService {
private static instance: OCPPIncomingRequestService | null = null;
+ protected asyncResource: AsyncResource;
+ private readonly version: OCPPVersion;
+ private readonly ajv: Ajv;
+ protected abstract jsonSchemas: Map<IncomingRequestCommand, JSONSchemaType<JsonObject>>;
- protected constructor() {
- // This is intentional
+ protected constructor(version: OCPPVersion) {
+ this.version = version;
+ this.ajv = new Ajv({
+ keywords: ['javaType'],
+ multipleOfPrecision: 2,
+ });
+ ajvFormats(this.ajv);
+ this.asyncResource = new AsyncResource(moduleName);
+ this.incomingRequestHandler.bind(this);
+ this.validateIncomingRequestPayload.bind(this);
}
public static getInstance<T extends OCPPIncomingRequestService>(this: new () => T): T {
- if (!OCPPIncomingRequestService.instance) {
+ if (OCPPIncomingRequestService.instance === null) {
OCPPIncomingRequestService.instance = new this();
}
return OCPPIncomingRequestService.instance as T;
commandName: IncomingRequestCommand,
error: Error,
params: HandleErrorParams<T> = { throwError: true }
- ): T {
+ ): T | undefined {
logger.error(
- chargingStation.logPrefix() + ' Incoming request command %s error: %j',
- commandName,
+ `${chargingStation.logPrefix()} ${moduleName}.handleIncomingRequestError: Incoming request command '${commandName}' error:`,
error
);
if (!params?.throwError && params?.errorResponse) {
}
}
+ protected validateIncomingRequestPayload<T extends JsonType>(
+ chargingStation: ChargingStation,
+ commandName: IncomingRequestCommand,
+ schema: JSONSchemaType<T>,
+ payload: T
+ ): boolean {
+ if (chargingStation.getPayloadSchemaValidation() === false) {
+ return true;
+ }
+ const validate = this.ajv.compile(schema);
+ if (validate(payload)) {
+ return true;
+ }
+ logger.error(
+ `${chargingStation.logPrefix()} ${moduleName}.validateIncomingRequestPayload: Command '${commandName}' incoming request PDU is invalid: %j`,
+ validate.errors
+ );
+ throw new OCPPError(
+ OCPPServiceUtils.ajvErrorsToErrorType(validate.errors),
+ 'Incoming request PDU is invalid',
+ commandName,
+ JSON.stringify(validate.errors, null, 2)
+ );
+ }
+
+ protected handleRequestClearCache(chargingStation: ChargingStation): ClearCacheResponse {
+ chargingStation.authorizedTagsCache.deleteAuthorizedTags(
+ ChargingStationUtils.getAuthorizationFile(chargingStation.stationInfo)
+ );
+ return OCPPConstants.OCPP_RESPONSE_ACCEPTED;
+ }
+
public abstract incomingRequestHandler(
chargingStation: ChargingStation,
messageId: string,