| 1 | // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved. |
| 2 | |
| 3 | import type { JSONSchemaType } from 'ajv'; |
| 4 | |
| 5 | import type { ChargingStation } from '../../../charging-station'; |
| 6 | import { OCPPError } from '../../../exception'; |
| 7 | import { |
| 8 | ErrorType, |
| 9 | type JsonObject, |
| 10 | type JsonType, |
| 11 | type OCPP20BootNotificationRequest, |
| 12 | type OCPP20HeartbeatRequest, |
| 13 | OCPP20RequestCommand, |
| 14 | type OCPP20StatusNotificationRequest, |
| 15 | OCPPVersion, |
| 16 | type RequestParams, |
| 17 | } from '../../../types'; |
| 18 | import { Utils } from '../../../utils'; |
| 19 | import { |
| 20 | OCPP20Constants, |
| 21 | OCPP20ServiceUtils, |
| 22 | OCPPRequestService, |
| 23 | type OCPPResponseService, |
| 24 | } from '../internal'; |
| 25 | |
| 26 | const moduleName = 'OCPP20RequestService'; |
| 27 | |
| 28 | export class OCPP20RequestService extends OCPPRequestService { |
| 29 | protected jsonSchemas: Map<OCPP20RequestCommand, JSONSchemaType<JsonObject>>; |
| 30 | |
| 31 | public constructor(ocppResponseService: OCPPResponseService) { |
| 32 | // if (new.target?.name === moduleName) { |
| 33 | // throw new TypeError(`Cannot construct ${new.target?.name} instances directly`); |
| 34 | // } |
| 35 | super(OCPPVersion.VERSION_20, ocppResponseService); |
| 36 | this.jsonSchemas = new Map<OCPP20RequestCommand, JSONSchemaType<JsonObject>>([ |
| 37 | [ |
| 38 | OCPP20RequestCommand.BOOT_NOTIFICATION, |
| 39 | OCPP20ServiceUtils.parseJsonSchemaFile<OCPP20BootNotificationRequest>( |
| 40 | '../../../assets/json-schemas/ocpp/2.0/BootNotificationRequest.json', |
| 41 | moduleName, |
| 42 | 'constructor' |
| 43 | ), |
| 44 | ], |
| 45 | [ |
| 46 | OCPP20RequestCommand.HEARTBEAT, |
| 47 | OCPP20ServiceUtils.parseJsonSchemaFile<OCPP20HeartbeatRequest>( |
| 48 | '../../../assets/json-schemas/ocpp/2.0/HeartbeatRequest.json', |
| 49 | moduleName, |
| 50 | 'constructor' |
| 51 | ), |
| 52 | ], |
| 53 | [ |
| 54 | OCPP20RequestCommand.STATUS_NOTIFICATION, |
| 55 | OCPP20ServiceUtils.parseJsonSchemaFile<OCPP20StatusNotificationRequest>( |
| 56 | '../../../assets/json-schemas/ocpp/2.0/StatusNotificationRequest.json', |
| 57 | moduleName, |
| 58 | 'constructor' |
| 59 | ), |
| 60 | ], |
| 61 | ]); |
| 62 | this.buildRequestPayload = this.buildRequestPayload.bind(this) as <Request extends JsonType>( |
| 63 | chargingStation: ChargingStation, |
| 64 | commandName: OCPP20RequestCommand, |
| 65 | commandParams?: JsonType |
| 66 | ) => Request; |
| 67 | } |
| 68 | |
| 69 | public async requestHandler<RequestType extends JsonType, ResponseType extends JsonType>( |
| 70 | chargingStation: ChargingStation, |
| 71 | commandName: OCPP20RequestCommand, |
| 72 | commandParams?: JsonType, |
| 73 | params?: RequestParams |
| 74 | ): Promise<ResponseType> { |
| 75 | // FIXME?: add sanity checks on charging station availability, connector availability, connector status, etc. |
| 76 | if (OCPP20ServiceUtils.isRequestCommandSupported(chargingStation, commandName) === true) { |
| 77 | return (await this.sendMessage( |
| 78 | chargingStation, |
| 79 | Utils.generateUUID(), |
| 80 | this.buildRequestPayload<RequestType>(chargingStation, commandName, commandParams), |
| 81 | commandName, |
| 82 | params |
| 83 | )) as ResponseType; |
| 84 | } |
| 85 | // OCPPError usage here is debatable: it's an error in the OCPP stack but not targeted to sendError(). |
| 86 | throw new OCPPError( |
| 87 | ErrorType.NOT_SUPPORTED, |
| 88 | `Unsupported OCPP command '${commandName}'`, |
| 89 | commandName, |
| 90 | commandParams |
| 91 | ); |
| 92 | } |
| 93 | |
| 94 | private buildRequestPayload<Request extends JsonType>( |
| 95 | chargingStation: ChargingStation, |
| 96 | commandName: OCPP20RequestCommand, |
| 97 | commandParams?: JsonType |
| 98 | ): Request { |
| 99 | commandParams = commandParams as JsonObject; |
| 100 | switch (commandName) { |
| 101 | case OCPP20RequestCommand.BOOT_NOTIFICATION: |
| 102 | return commandParams as unknown as Request; |
| 103 | case OCPP20RequestCommand.HEARTBEAT: |
| 104 | return OCPP20Constants.OCPP_RESPONSE_EMPTY as unknown as Request; |
| 105 | case OCPP20RequestCommand.STATUS_NOTIFICATION: |
| 106 | return { |
| 107 | timestamp: new Date(), |
| 108 | ...commandParams, |
| 109 | } as unknown as Request; |
| 110 | default: |
| 111 | // OCPPError usage here is debatable: it's an error in the OCPP stack but not targeted to sendError(). |
| 112 | throw new OCPPError( |
| 113 | ErrorType.NOT_SUPPORTED, |
| 114 | // eslint-disable-next-line @typescript-eslint/restrict-template-expressions |
| 115 | `Unsupported OCPP command '${commandName}'`, |
| 116 | commandName, |
| 117 | commandParams |
| 118 | ); |
| 119 | } |
| 120 | } |
| 121 | } |