| 1 | import BaseError from '../exception/BaseError'; |
| 2 | import type OCPPError from '../exception/OCPPError'; |
| 3 | import { StandardParametersKey } from '../types/ocpp/Configuration'; |
| 4 | import { |
| 5 | type BootNotificationRequest, |
| 6 | type DataTransferRequest, |
| 7 | type HeartbeatRequest, |
| 8 | type MeterValuesRequest, |
| 9 | RequestCommand, |
| 10 | type StatusNotificationRequest, |
| 11 | } from '../types/ocpp/Requests'; |
| 12 | import { |
| 13 | type BootNotificationResponse, |
| 14 | type DataTransferResponse, |
| 15 | DataTransferStatus, |
| 16 | type HeartbeatResponse, |
| 17 | type MeterValuesResponse, |
| 18 | RegistrationStatus, |
| 19 | type StatusNotificationResponse, |
| 20 | } from '../types/ocpp/Responses'; |
| 21 | import { |
| 22 | AuthorizationStatus, |
| 23 | type AuthorizeRequest, |
| 24 | type AuthorizeResponse, |
| 25 | type StartTransactionRequest, |
| 26 | type StartTransactionResponse, |
| 27 | type StopTransactionRequest, |
| 28 | type StopTransactionResponse, |
| 29 | } from '../types/ocpp/Transaction'; |
| 30 | import { ResponseStatus } from '../types/UIProtocol'; |
| 31 | import { |
| 32 | BroadcastChannelProcedureName, |
| 33 | type BroadcastChannelRequest, |
| 34 | type BroadcastChannelRequestPayload, |
| 35 | type BroadcastChannelResponsePayload, |
| 36 | type MessageEvent, |
| 37 | } from '../types/WorkerBroadcastChannel'; |
| 38 | import Constants from '../utils/Constants'; |
| 39 | import logger from '../utils/Logger'; |
| 40 | import Utils from '../utils/Utils'; |
| 41 | import type ChargingStation from './ChargingStation'; |
| 42 | import { ChargingStationConfigurationUtils } from './ChargingStationConfigurationUtils'; |
| 43 | import { OCPP16ServiceUtils } from './ocpp/1.6/OCPP16ServiceUtils'; |
| 44 | import WorkerBroadcastChannel from './WorkerBroadcastChannel'; |
| 45 | |
| 46 | const moduleName = 'ChargingStationWorkerBroadcastChannel'; |
| 47 | |
| 48 | type CommandResponse = |
| 49 | | StartTransactionResponse |
| 50 | | StopTransactionResponse |
| 51 | | AuthorizeResponse |
| 52 | | BootNotificationResponse |
| 53 | | StatusNotificationResponse |
| 54 | | HeartbeatResponse |
| 55 | | MeterValuesResponse |
| 56 | | DataTransferResponse; |
| 57 | |
| 58 | type CommandHandler = ( |
| 59 | requestPayload?: BroadcastChannelRequestPayload |
| 60 | ) => Promise<CommandResponse | void> | void; |
| 61 | |
| 62 | export default class ChargingStationWorkerBroadcastChannel extends WorkerBroadcastChannel { |
| 63 | private readonly commandHandlers: Map<BroadcastChannelProcedureName, CommandHandler>; |
| 64 | private readonly chargingStation: ChargingStation; |
| 65 | |
| 66 | constructor(chargingStation: ChargingStation) { |
| 67 | super(); |
| 68 | this.commandHandlers = new Map<BroadcastChannelProcedureName, CommandHandler>([ |
| 69 | [BroadcastChannelProcedureName.START_CHARGING_STATION, () => this.chargingStation.start()], |
| 70 | [ |
| 71 | BroadcastChannelProcedureName.STOP_CHARGING_STATION, |
| 72 | async () => this.chargingStation.stop(), |
| 73 | ], |
| 74 | [ |
| 75 | BroadcastChannelProcedureName.OPEN_CONNECTION, |
| 76 | () => this.chargingStation.openWSConnection(), |
| 77 | ], |
| 78 | [ |
| 79 | BroadcastChannelProcedureName.CLOSE_CONNECTION, |
| 80 | () => this.chargingStation.closeWSConnection(), |
| 81 | ], |
| 82 | [ |
| 83 | BroadcastChannelProcedureName.START_AUTOMATIC_TRANSACTION_GENERATOR, |
| 84 | (requestPayload?: BroadcastChannelRequestPayload) => |
| 85 | this.chargingStation.startAutomaticTransactionGenerator(requestPayload.connectorIds), |
| 86 | ], |
| 87 | [ |
| 88 | BroadcastChannelProcedureName.STOP_AUTOMATIC_TRANSACTION_GENERATOR, |
| 89 | (requestPayload?: BroadcastChannelRequestPayload) => |
| 90 | this.chargingStation.stopAutomaticTransactionGenerator(requestPayload.connectorIds), |
| 91 | ], |
| 92 | [ |
| 93 | BroadcastChannelProcedureName.START_TRANSACTION, |
| 94 | async (requestPayload?: BroadcastChannelRequestPayload) => |
| 95 | this.chargingStation.ocppRequestService.requestHandler< |
| 96 | StartTransactionRequest, |
| 97 | StartTransactionResponse |
| 98 | >(this.chargingStation, RequestCommand.START_TRANSACTION, requestPayload), |
| 99 | ], |
| 100 | [ |
| 101 | BroadcastChannelProcedureName.STOP_TRANSACTION, |
| 102 | async (requestPayload?: BroadcastChannelRequestPayload) => |
| 103 | this.chargingStation.ocppRequestService.requestHandler< |
| 104 | StopTransactionRequest, |
| 105 | StartTransactionResponse |
| 106 | >(this.chargingStation, RequestCommand.STOP_TRANSACTION, { |
| 107 | meterStop: this.chargingStation.getEnergyActiveImportRegisterByTransactionId( |
| 108 | requestPayload.transactionId, |
| 109 | true |
| 110 | ), |
| 111 | ...requestPayload, |
| 112 | }), |
| 113 | ], |
| 114 | [ |
| 115 | BroadcastChannelProcedureName.AUTHORIZE, |
| 116 | async (requestPayload?: BroadcastChannelRequestPayload) => |
| 117 | this.chargingStation.ocppRequestService.requestHandler< |
| 118 | AuthorizeRequest, |
| 119 | AuthorizeResponse |
| 120 | >(this.chargingStation, RequestCommand.AUTHORIZE, requestPayload), |
| 121 | ], |
| 122 | [ |
| 123 | BroadcastChannelProcedureName.BOOT_NOTIFICATION, |
| 124 | async (requestPayload?: BroadcastChannelRequestPayload) => { |
| 125 | this.chargingStation.bootNotificationResponse = |
| 126 | await this.chargingStation.ocppRequestService.requestHandler< |
| 127 | BootNotificationRequest, |
| 128 | BootNotificationResponse |
| 129 | >( |
| 130 | this.chargingStation, |
| 131 | RequestCommand.BOOT_NOTIFICATION, |
| 132 | { |
| 133 | ...this.chargingStation.bootNotificationRequest, |
| 134 | ...requestPayload, |
| 135 | }, |
| 136 | { |
| 137 | skipBufferingOnError: true, |
| 138 | } |
| 139 | ); |
| 140 | return this.chargingStation.bootNotificationResponse; |
| 141 | }, |
| 142 | ], |
| 143 | [ |
| 144 | BroadcastChannelProcedureName.STATUS_NOTIFICATION, |
| 145 | async (requestPayload?: BroadcastChannelRequestPayload) => |
| 146 | this.chargingStation.ocppRequestService.requestHandler< |
| 147 | StatusNotificationRequest, |
| 148 | StatusNotificationResponse |
| 149 | >(this.chargingStation, RequestCommand.STATUS_NOTIFICATION, requestPayload), |
| 150 | ], |
| 151 | [ |
| 152 | BroadcastChannelProcedureName.HEARTBEAT, |
| 153 | async (requestPayload?: BroadcastChannelRequestPayload) => |
| 154 | this.chargingStation.ocppRequestService.requestHandler< |
| 155 | HeartbeatRequest, |
| 156 | HeartbeatResponse |
| 157 | >(this.chargingStation, RequestCommand.HEARTBEAT, requestPayload), |
| 158 | ], |
| 159 | [ |
| 160 | BroadcastChannelProcedureName.METER_VALUES, |
| 161 | async (requestPayload?: BroadcastChannelRequestPayload) => { |
| 162 | const configuredMeterValueSampleInterval = |
| 163 | ChargingStationConfigurationUtils.getConfigurationKey( |
| 164 | chargingStation, |
| 165 | StandardParametersKey.MeterValueSampleInterval |
| 166 | ); |
| 167 | return this.chargingStation.ocppRequestService.requestHandler< |
| 168 | MeterValuesRequest, |
| 169 | MeterValuesResponse |
| 170 | >(this.chargingStation, RequestCommand.METER_VALUES, { |
| 171 | meterValue: [ |
| 172 | OCPP16ServiceUtils.buildMeterValue( |
| 173 | this.chargingStation, |
| 174 | requestPayload.connectorId, |
| 175 | this.chargingStation.getConnectorStatus(requestPayload.connectorId)?.transactionId, |
| 176 | configuredMeterValueSampleInterval |
| 177 | ? Utils.convertToInt(configuredMeterValueSampleInterval.value) * 1000 |
| 178 | : Constants.DEFAULT_METER_VALUES_INTERVAL |
| 179 | ), |
| 180 | ], |
| 181 | ...requestPayload, |
| 182 | }); |
| 183 | }, |
| 184 | ], |
| 185 | [ |
| 186 | BroadcastChannelProcedureName.DATA_TRANSFER, |
| 187 | async (requestPayload?: BroadcastChannelRequestPayload) => |
| 188 | this.chargingStation.ocppRequestService.requestHandler< |
| 189 | DataTransferRequest, |
| 190 | DataTransferResponse |
| 191 | >(this.chargingStation, RequestCommand.DATA_TRANSFER, requestPayload), |
| 192 | ], |
| 193 | ]); |
| 194 | this.chargingStation = chargingStation; |
| 195 | this.onmessage = this.requestHandler.bind(this) as (message: MessageEvent) => void; |
| 196 | this.onmessageerror = this.messageErrorHandler.bind(this) as (message: MessageEvent) => void; |
| 197 | } |
| 198 | |
| 199 | private async requestHandler(messageEvent: MessageEvent): Promise<void> { |
| 200 | const validatedMessageEvent = this.validateMessageEvent(messageEvent); |
| 201 | if (validatedMessageEvent === false) { |
| 202 | return; |
| 203 | } |
| 204 | if (this.isResponse(validatedMessageEvent.data) === true) { |
| 205 | return; |
| 206 | } |
| 207 | const [uuid, command, requestPayload] = validatedMessageEvent.data as BroadcastChannelRequest; |
| 208 | if ( |
| 209 | requestPayload?.hashIds !== undefined && |
| 210 | requestPayload?.hashIds?.includes(this.chargingStation.stationInfo.hashId) === false |
| 211 | ) { |
| 212 | return; |
| 213 | } |
| 214 | if (requestPayload?.hashId !== undefined) { |
| 215 | logger.error( |
| 216 | `${this.chargingStation.logPrefix()} ${moduleName}.requestHandler: 'hashId' field usage in PDU is deprecated, use 'hashIds' instead` |
| 217 | ); |
| 218 | return; |
| 219 | } |
| 220 | let responsePayload: BroadcastChannelResponsePayload; |
| 221 | let commandResponse: CommandResponse | void; |
| 222 | try { |
| 223 | commandResponse = await this.commandHandler(command, requestPayload); |
| 224 | if (commandResponse === undefined || commandResponse === null) { |
| 225 | responsePayload = { |
| 226 | hashId: this.chargingStation.stationInfo.hashId, |
| 227 | status: ResponseStatus.SUCCESS, |
| 228 | }; |
| 229 | } else { |
| 230 | responsePayload = this.commandResponseToResponsePayload( |
| 231 | command, |
| 232 | requestPayload, |
| 233 | commandResponse as CommandResponse |
| 234 | ); |
| 235 | } |
| 236 | } catch (error) { |
| 237 | logger.error( |
| 238 | `${this.chargingStation.logPrefix()} ${moduleName}.requestHandler: Handle request error:`, |
| 239 | error |
| 240 | ); |
| 241 | responsePayload = { |
| 242 | hashId: this.chargingStation.stationInfo.hashId, |
| 243 | status: ResponseStatus.FAILURE, |
| 244 | command, |
| 245 | requestPayload, |
| 246 | commandResponse: commandResponse as CommandResponse, |
| 247 | errorMessage: (error as Error).message, |
| 248 | errorStack: (error as Error).stack, |
| 249 | errorDetails: (error as OCPPError).details, |
| 250 | }; |
| 251 | } finally { |
| 252 | this.sendResponse([uuid, responsePayload]); |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | private messageErrorHandler(messageEvent: MessageEvent): void { |
| 257 | logger.error( |
| 258 | `${this.chargingStation.logPrefix()} ${moduleName}.messageErrorHandler: Error at handling message:`, |
| 259 | messageEvent |
| 260 | ); |
| 261 | } |
| 262 | |
| 263 | private async commandHandler( |
| 264 | command: BroadcastChannelProcedureName, |
| 265 | requestPayload: BroadcastChannelRequestPayload |
| 266 | ): Promise<CommandResponse | void> { |
| 267 | if (this.commandHandlers.has(command) === true) { |
| 268 | this.cleanRequestPayload(command, requestPayload); |
| 269 | return this.commandHandlers.get(command)(requestPayload); |
| 270 | } |
| 271 | throw new BaseError(`Unknown worker broadcast channel command: ${command}`); |
| 272 | } |
| 273 | |
| 274 | private cleanRequestPayload( |
| 275 | command: BroadcastChannelProcedureName, |
| 276 | requestPayload: BroadcastChannelRequestPayload |
| 277 | ): void { |
| 278 | delete requestPayload.hashId; |
| 279 | delete requestPayload.hashIds; |
| 280 | [ |
| 281 | BroadcastChannelProcedureName.START_AUTOMATIC_TRANSACTION_GENERATOR, |
| 282 | BroadcastChannelProcedureName.STOP_AUTOMATIC_TRANSACTION_GENERATOR, |
| 283 | ].includes(command) === false && delete requestPayload.connectorIds; |
| 284 | } |
| 285 | |
| 286 | private commandResponseToResponsePayload( |
| 287 | command: BroadcastChannelProcedureName, |
| 288 | requestPayload: BroadcastChannelRequestPayload, |
| 289 | commandResponse: CommandResponse |
| 290 | ): BroadcastChannelResponsePayload { |
| 291 | const responseStatus = this.commandResponseToResponseStatus(command, commandResponse); |
| 292 | if (responseStatus === ResponseStatus.SUCCESS) { |
| 293 | return { |
| 294 | hashId: this.chargingStation.stationInfo.hashId, |
| 295 | status: responseStatus, |
| 296 | }; |
| 297 | } |
| 298 | return { |
| 299 | hashId: this.chargingStation.stationInfo.hashId, |
| 300 | status: responseStatus, |
| 301 | command, |
| 302 | requestPayload, |
| 303 | commandResponse, |
| 304 | }; |
| 305 | } |
| 306 | |
| 307 | private commandResponseToResponseStatus( |
| 308 | command: BroadcastChannelProcedureName, |
| 309 | commandResponse: CommandResponse |
| 310 | ): ResponseStatus { |
| 311 | switch (command) { |
| 312 | case BroadcastChannelProcedureName.START_TRANSACTION: |
| 313 | case BroadcastChannelProcedureName.STOP_TRANSACTION: |
| 314 | case BroadcastChannelProcedureName.AUTHORIZE: |
| 315 | if ( |
| 316 | ( |
| 317 | commandResponse as |
| 318 | | StartTransactionResponse |
| 319 | | StopTransactionResponse |
| 320 | | AuthorizeResponse |
| 321 | )?.idTagInfo?.status === AuthorizationStatus.ACCEPTED |
| 322 | ) { |
| 323 | return ResponseStatus.SUCCESS; |
| 324 | } |
| 325 | return ResponseStatus.FAILURE; |
| 326 | case BroadcastChannelProcedureName.BOOT_NOTIFICATION: |
| 327 | if (commandResponse?.status === RegistrationStatus.ACCEPTED) { |
| 328 | return ResponseStatus.SUCCESS; |
| 329 | } |
| 330 | return ResponseStatus.FAILURE; |
| 331 | case BroadcastChannelProcedureName.DATA_TRANSFER: |
| 332 | if (commandResponse?.status === DataTransferStatus.ACCEPTED) { |
| 333 | return ResponseStatus.SUCCESS; |
| 334 | } |
| 335 | return ResponseStatus.FAILURE; |
| 336 | case BroadcastChannelProcedureName.STATUS_NOTIFICATION: |
| 337 | case BroadcastChannelProcedureName.METER_VALUES: |
| 338 | if (Utils.isEmptyObject(commandResponse) === true) { |
| 339 | return ResponseStatus.SUCCESS; |
| 340 | } |
| 341 | return ResponseStatus.FAILURE; |
| 342 | case BroadcastChannelProcedureName.HEARTBEAT: |
| 343 | if ('currentTime' in commandResponse) { |
| 344 | return ResponseStatus.SUCCESS; |
| 345 | } |
| 346 | return ResponseStatus.FAILURE; |
| 347 | default: |
| 348 | return ResponseStatus.FAILURE; |
| 349 | } |
| 350 | } |
| 351 | } |